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  • Subduction zone
    ...nd basins attract the minds of geologists. The profound role of subduction zone emerges as methods in geophysics reveal the structure and composition of ma ...ove inside the Earth. According to the types of involved crust, subduction zone has two separate types: island-arc and active [[continental margin]] (ACM).
    27 KB (4,033 words) - 20:52, 27 March 2019

Page text matches

  • Shale gouge ratio
    ...ach reservoir zone can be related to the clay content and thickness of the zone. The corresponding equation is (see [[:File:Shale-gouge-ratio-fig3.png|Figu <math>\text{SGR} = \frac{\Sigma [(\text{zone thickness}) \times (\text{zone clay fraction})]}{\text{fault throw}} \times 100%</math>
    3 KB (473 words) - 20:04, 11 March 2015
  • Seepage activity and surficial geochemistry
    ...ocarbon seepage may only be detectable near major leak points or below the zone of maximum disturbance. ...mical-exploration-for-petroleum_fig18-2.png|300px|thumb|{{figure number|1}}Zone of maximum disturbance in shallow marine sediments. From Abrams;<ref name=c
    4 KB (482 words) - 21:00, 31 January 2022
  • How fault zones affect seal
    ...and-rich portions of the fault zone leak; shale-rich portions of the fault zone seal. Given the complex structure and composition of fault zones and the ma ...ging wall]] have been incorporated as discontinuous fragments in the fault zone. The coal, however, is intensely fractured, reflecting [[Brittleness|brittl
    4 KB (509 words) - 16:52, 29 March 2022
  • Early carbonate diagenesis
    Each zone has characteristic cement textures and alteration features. The sequence of * Active marine zone where water flow combined with other factors result in precipitation of ara
    10 KB (1,352 words) - 19:07, 6 April 2022
  • Sequences during moderate-amplitude, high-frequency cycles
    ==Arid zone characteristics== ==Humid zone characteristics==
    5 KB (674 words) - 21:22, 6 April 2022
  • Sequences during low-amplitude, high-frequency cycles
    ==Arid zone characteristics== ==Humid zone characteristics==
    5 KB (708 words) - 21:00, 6 April 2022
  • Reservoir system
    ...m has three main components: a [[reservoir]], an aquifer, and a transition zone (interface) between the two. * A '''transition zone''' is the interval of rock separating the reservoir from the aquifer; it is
    4 KB (579 words) - 14:34, 1 April 2022
  • Trip
    ...because the old one is worn down, or because the well is about to enter a zone whose conditions require a different bit type. This process of puling all
    450 bytes (82 words) - 13:57, 12 March 2019
  • Water saturation distribution in a reservoir
    .../sub> distribution curves for several flow units for a hydrocarbon-bearing zone in a well. ...]. Above the transition zone, BVW is fairly constant. Below the transition zone, BVW is variable.
    5 KB (687 words) - 17:09, 5 April 2022
  • Dip-sealing fault
    ...oil and gas are trapped against the fault and have not leaked up the fault zone. ...|1}}Oil and gas trapped against the fault and have not leaked up the fault zone.]]
    2 KB (248 words) - 17:04, 28 March 2022
  • Free water level
    ...t the base of a [[hydrocarbon column]] and the [[Fluid contacts|transition zone]]. Above this level, the reservoir produces water alone, hydrocarbon and wa
    525 bytes (76 words) - 14:40, 8 September 2014
  • Bioturbation
    ...ment; vertical burrows may indicate shallow water, specifically the tidal zone, because the organisms moved up and down in the substrate as the tide ebbed
    907 bytes (132 words) - 21:42, 18 September 2014
  • Mohorovicic discontinuity
    A zone that separates the Earth's [[crust]] from the underlying [[mantle]]. The Mo
    729 bytes (103 words) - 15:49, 4 December 2015
  • Sequences during high-amplitude, high-frequency cycles
    ==Arid zone characteristics== ==Humid zone characteristics==
    6 KB (761 words) - 13:47, 7 April 2022
  • Carbonate facies
    * A seaward zone below normal wave base * A zone where wave energy interacts with sediment
    3 KB (433 words) - 18:32, 6 April 2022
  • Carbonate diagenetic stages
    ...sses. Even though the eogenetic substage may be geologically brief and the zone thin, the [[diagenesis]] that occurs is more varied and generally more sign ...and erosion occurs along [[Unconformity|unconformities]]. The telogenetic zone extends from the surface to the point where surface processes no longer inf
    6 KB (727 words) - 19:06, 6 April 2022
  • Interpreting hydrocarbon shows
    ...The table below lists ways to distinguish transition zone shows from waste zone shows (after Schowalter and Hess<ref name=ch09r55 />). ...are no longer connected in a column but are isolated in pores. A DST of a zone with residual hydrocarbons produces no oil or gas, and an RFT would not sho
    8 KB (1,130 words) - 17:09, 5 April 2022
  • Spontaneous potential logs in water resistivity calculation
    ...ub>w</sub> can be measured from a sample of formation water taken from the zone of interest at the well site or a nearby well, or it can be calculated usin ...t [[length::20 ft]] thick. (A bed thickness correction is necessary if the zone SP is measured from is less than [[length::20 ft]] thick.)
    6 KB (1,027 words) - 16:40, 5 April 2022
  • Fault seal quantitative prediction: shale smear factor, shale gouge ratio, and smear gouge ratio
    ...from the source bed and the compound nature of the clay smear in the fault zone. (No scale on original figure.) ...hickness of each reservoir zone and Vcl is the clay volume fraction in the zone.]]
    8 KB (1,307 words) - 16:05, 14 December 2016
  • Tmax
    ...sis techniques have different cutoffs for pyrolysis oil and gas generation zone boundaries. Pyrolysis T<sub>max</sub> can be significantly different for ty ! Hydrocarbon generation zone || Rock-eval pyrolysis T<sub>max</sub>, °c
    3 KB (411 words) - 21:19, 9 February 2022
  • Archie equation
    ...log parameters, the [[water saturation]] (S<sub>w</sub>) of the uninvaded zone in a formation next to a borehole. The Archie equation can be expressed as * S<sub>w</sub> = water saturation of the uninvaded zone
    5 KB (703 words) - 13:52, 5 April 2022
  • Growth fault
    ...one causes normal faults each pair. The process of formation of fault rift zone is typically a part of the formation of sedimentary basins. Initial sedimen
    4 KB (630 words) - 18:28, 2 April 2019
  • Seismic inversion
    ...The heavy trace in the center is a sonic log from the producing well. The zone of interest is at 1150 msec. ...version_fig4.png|{{figure number|4}}A schematic diagram of a river channel zone. Copyright: the Taber area of southern Alberta. The 3-D survey was done in
    8 KB (1,196 words) - 18:48, 21 January 2022
  • Vertical and lateral seismic resolution and attenuation
    ...ft]] at a depth of [[depth::5000 ft]]. As with the wavelength, the Fresnel zone size also increases rapidly with depth. [[Seismic migration]] effectively collapses the in-line aspect of the Fresnel zone, so this measure of resolution is not appropriate with the migrated seismic
    8 KB (1,164 words) - 20:24, 21 January 2022
  • Dip-leaking fault
    ...igher permeability than the wall rock will refract flow lines up the fault zone. Pressure differences along and across faults can also cause down-dip flow
    8 KB (1,130 words) - 17:14, 28 March 2022
  • Accumulation
    ...carbon accumulation forms when migrating hydrocarbon filaments encounter a zone (the seal), either laterally or vertically, with pore throat sizes smaller
    1 KB (206 words) - 17:37, 27 January 2015
  • Buckles plot
    ...n a Buckles plot where the formation falls below the top of the transition zone.
    1 KB (183 words) - 18:19, 26 March 2015
  • Well planning
    * How will the target zone(s) be evaluated? * Anticipated pay zone(s)
    6 KB (779 words) - 15:09, 24 January 2022
  • Three-dimensional seismic method
    ...et zone and the aperture size required for adequate imaging of that target zone.<ref name=pt07r64>Yilmaz, O., 1987 Seismic Data Processing: Society of Expl ...migrated section that are easily correlated with reflections outside that zone. When we do 2-D migration, we confine the movement of the energy into the p
    8 KB (1,201 words) - 20:24, 21 January 2022
  • Log interpretation: initial quick scan
    ...nd water in a formation. These estimated quantities are used to evaluate a zone and to determine whether a well completion attempt is warranted. As importa
    4 KB (543 words) - 14:11, 21 August 2014
  • Water resistivity determination
    ...which is required for the calculation of water saturation in the uninvaded zone. The equation that relates the SSP to measurable quantities, namely, ''R''< ...e SP is outlined as follows. The data required include the SP, the invaded zone resistivity, the formation temperature, and the mud and mud filtrate resist
    13 KB (2,077 words) - 17:26, 18 January 2022
  • Hydrostatic pressure-depth plot construction
    ...hydrostatic pressure gradient to determine the expected pressures for the zone of interest as if it had no hydrocarbons. Pressures exceeding hydrostatic p ...than the hydrostatic gradient that may correspond to a hydrocarbon-bearing zone. A hydrostatic pressure–depth plot can be constructed from any of the fol
    7 KB (895 words) - 18:57, 16 February 2022
  • Fault seal breakdown during production
    ...pressure will ultimately exceed the [[displacement pressure]] of the fault zone and the fault will [[Cross-leaking faults|cross-leak]].<ref name=ch10r76>Sm ...e differential (AP) increases until the displacement pressure of the fault zone is exceeded and the fault begins to cross-leak. A fault in the Beryl field
    4 KB (530 words) - 15:21, 30 March 2022
  • Hydrostatic pressure gradient
    ...hydrostatic pressure gradient to determine the expected pressures for the zone of interest as if it had no hydrocarbons. Pressures exceeding hydrostatic p
    2 KB (207 words) - 18:56, 16 February 2022
  • Workovers
    * Well pressure may be a primary consideration. If the open zone has experienced significant depletion, the circulation of fluids becomes di ...and (2) work done to shut off the existing zone in favor of opening a new zone, termed a ''recompletion''.
    12 KB (1,834 words) - 15:25, 24 January 2022
  • Overpressure and hydrocarbon distribution, Gulf Coast
    ...hydrocarbons are found near or slightly above the top of the overpressured zone. The chance of success is reduced by 90–95% at depths of 2,000–5,000 ft
    4 KB (605 words) - 20:30, 30 March 2022
  • Quantitative fault seal analysis
    ...ealing behavior of faults and the inferred sand–shale content of the fault zone.<ref name=ch10r7>Bouvier, J., D., Kaars-Sijpesteigen, C., H., Kluesner, D., ...R). A fault cross-seals or dip-seals if the sand–shale ratio is low in the zone (low SGR).
    9 KB (1,327 words) - 16:32, 29 March 2022
  • Seal failure prediction
    ...zed by a zone of residual petroleum saturation thicker than the transition zone predicted by [[capillary pressure]] tests. Shows in traps that have leaked
    4 KB (571 words) - 18:06, 1 February 2022
  • Diagenetic traps: criteria for recognition
    ...ationship between present-day depth and hydrocarbon production for a given zone ...strata form the [[lateral]] seal. The sinuous updip edge is a large waste zone that contains live oil shows in microporous strata, indicating the [[accumu
    5 KB (611 words) - 21:06, 4 February 2022
  • Vitrinite reflectance
    Oil and gas zone boundaries can be established using vitrinite reflectance data. The boundar ...retation of the mean value would place this sample past the oil generation zone. The true reflectance of the indigenous vitrinite in this sample is 0.7% R<
    7 KB (970 words) - 14:28, 10 February 2022
  • Main Central Thrust
    ...</ref>. Generally speaking, the Main Central Thrust is the ductile [[shear zone]], along which the Great Himalayan Crystalline complex was placed over the ...al Thrust; STD: the Southern Tibetan Detachment; ITS: Indus-Tsangpo suture zone.]]
    10 KB (1,434 words) - 15:39, 20 January 2016
  • Paleobathymetry
    ==Zone distinctions== ! Depth zone
    7 KB (921 words) - 18:09, 24 January 2022
  • Sea level cycles and climate
    ...m. This is contrasted to cooler water carbonate settings where the photic zone extends to [[length::100 m]] or deeper. Tropical carbonate faunal assemblag | Photic zone depth || 20–30 m || 100 m+
    7 KB (894 words) - 20:54, 6 April 2022
  • Borehole gravity applications: examples
    ...fference in density at the arrow is caused by a remote higher [[porosity]] zone not detected by the gamma-gamma density log. The broader difference anomaly ...e oil has a gas cap. Frequently, these reservoirs have an underlying water zone. The shape of these interfaces over time is critical to production strategy
    11 KB (1,596 words) - 18:08, 24 January 2022
  • Pc curves and saturation profiles
    ...bon column]]. Macropore reservoirs have little or no saturation transition zone. ...he rock in container 2 is macroporous. Container 1 has a longer transition zone than container 2 because of this. Both containers have the same buoyancy pr
    5 KB (752 words) - 16:53, 4 April 2022
  • 2014 wiki write off
    * [[Subduction zone]]
    2 KB (257 words) - 19:24, 27 July 2015
  • Stratigraphically complex fields
    |   Lacustrine shore zone and delta ...s fluid relationships (such as a gas zone underlying an oil zone or an oil zone downdip of water)
    8 KB (983 words) - 20:49, 19 January 2022
  • Oil and condensate analysis
    | Producing zone oil or new zone | New oil (zone) or same oil
    14 KB (2,013 words) - 16:48, 20 January 2022
  • Seismic data
    ...8/1150/1185.htm Three-dimensional seismic interpretation from the triangle zone of the frontal Ouachita Mountains and Arkoma basin, Pittsburg County, Oklah ...wton, D., C., Spratt, D., A., 1996, Seismic interpretation of the triangle zone at Jumping Pond, Alberta: Bulletin of Canadian Petroleum Geology, vol. 44,
    5 KB (712 words) - 21:27, 2 February 2022
  • Subduction zone
    ...nd basins attract the minds of geologists. The profound role of subduction zone emerges as methods in geophysics reveal the structure and composition of ma ...ove inside the Earth. According to the types of involved crust, subduction zone has two separate types: island-arc and active [[continental margin]] (ACM).
    27 KB (4,033 words) - 20:52, 27 March 2019
  • Density-neutron log porosity
    ...m density–neutron logs when the two logs record different porosities for a zone, use one of the methods listed below. ...as reservoir, Point 3 to be in light oil reservoir, and Point 4 to be in a zone with residual oil.
    12 KB (1,763 words) - 16:18, 5 April 2022
  • Production Index (PI)
    ! Production index || [[Petroleum generation|Generation]] zone
    3 KB (364 words) - 16:10, 10 February 2022
  • Fluid contacts
    ...splacement pressure]] (DP) on the capillary pressure curve. The transition zone is the interval with co-production of water and hydrocarbons. The fraction ...The ''[[What is a reservoir system?#Waste and transition zones|transition zone]]'' is the elevation range in which water is coproduced with hydrocarbons.
    19 KB (2,690 words) - 21:20, 19 January 2022
  • Well log analysis for reservoir characterization
    ...perties of rocks. This method is very useful to detect hydrocarbon bearing zone, calculate the hydrocarbon volume, and many others. Some approaches are nee ...he “fish diagram”. There are many techniques to find a hydrocarbon bearing zone, the user may use RHOB-NPHI cross over (with some corrections), reflectivit
    25 KB (3,679 words) - 21:17, 13 March 2019
  • Spore coloration and thermal alteration indices (SCI and TAI): usage
    ...teration index (TAI) || Pyrolysis [[Tmax]] (°C) || Generalized hydrocarbon zone
    3 KB (335 words) - 14:39, 10 February 2022
  • Apatite fission track analysis
    ...f the remaining tracks would have formed since the uplift to a temperature zone less than or equal to the [[temperature::60&deg;C]] to [[temperature::70&de
    7 KB (994 words) - 21:38, 4 February 2022
  • Standard interpretation
    ...associated with a clean reservoir having no shale (GR<sub>cl</sub>) and a zone of 100% shale (GR<sub>sh</sub>). ...se associated with a clean reservoir with no shale (SP<sub>cl</sub>) and a zone of 100% shale (SP<sub>sh</sub>). The response equation is
    25 KB (3,776 words) - 19:53, 18 January 2022
  • Niobrara & Codell of the Denver-Julesburg Basin
    ...ontaining many small shale drapes and cross beds, and an upper bioturbated zone. It conformably grades into the lowest-most member of the Niobrara Formatio ...d with ggplot2 (Wickham, 2016). Total oil and gas produciton broken out by zone and state are shown in Figures 2 and 3.
    9 KB (1,412 words) - 21:46, 3 March 2022
  • Perforation design
    ...ill allow the communication of fluids to form between the wellbore and pay zone. In this topic, there are many factors to be considered in order to have a * Limited entry perforation: A restriction of perforation based on the target zone’s thickness, stresses, and number of layers.
    12 KB (1,786 words) - 21:02, 21 April 2022
  • Condensate banking effect
    ...observed further away from the wellbore. No condensate is present in this zone and only gas is mobile. * Condensate Buildup Zone: (Zone 2) As we move closer to the wellbore, the reservoir pressure is now below t
    21 KB (3,040 words) - 15:22, 12 December 2022
  • Petrophysical analysis of Sorrento field wells
    ...diate water saturation (S<sub>w</sub> = 70%). This looks like a transition zone. Flow units 2 and 1 are [[Wikipedia:Mesoporous material|mesoporous]] and ar .../sup> oil and 425 m<sup>3</sup> gas per day) with no water. Therefore, the zone by definition is at immobile water saturation (S<sub>wi</sub> = 40%). The d
    7 KB (956 words) - 17:24, 11 April 2022
  • True resistivity determination
    To obtain an uninvaded zone resistivity (R<sub>t</sub>)
    3 KB (427 words) - 16:16, 5 April 2022
  • Subsurface diagenesis and its relation with diagenetic trap on carbonate rocks reservoir
    ...mixing zone, and vadose zone. Dissolution also may occur in the subsurface zone with rocks and water at the outside of chemical equilibrium. ...ecipitation, biological activity, and neomorphism. Soil and low weathering zone are not always important as the reservoir rocks, because the porosity size
    16 KB (2,395 words) - 21:18, 9 January 2024
  • Relative permeability
    The '''drainage curve''' determines from computed S<sub>w</sub> whether a zone is representative of lower transitional (K<sub>rw</sub>> K<sub>ro</sub> - D | Length of transition zone
    9 KB (1,351 words) - 13:31, 5 April 2022
  • Seismic data: two- or three-dimensional interpretation
    ...cal seismic sections, you will fail to see faults that have trends in this zone. The same phenomenon occurs with depositional stratigraphy.
    8 KB (1,280 words) - 17:33, 25 January 2022
  • Depositional environments
    ...plucking of underlying bed happens. The supraglacial zone and ice-contact zone are zones of melting where englacial debris carried by glacier accumulates * The Foreshore, called littoral zone or zone between high tide level to low tide level.
    26 KB (3,851 words) - 20:38, 28 February 2019
  • Types of wells
    ...nt of keeping the well within a specific reservoir interval or hydrocarbon zone.]] ...ctory to keep the well within a specific reservoir interval or hydrocarbon zone. In a strict sense, these wells are rarely perfectly horizontal, but they t
    22 KB (3,567 words) - 17:20, 11 March 2019
  • Reservoir simulations and field unitization
    ...eologic time spans but seal during production time spans. Even a low fault-zone [[permeability]] may allow hydrocarbons to [[Fault seal breakdown during pr
    3 KB (479 words) - 15:21, 30 March 2022
  • Pressure prediction: analysis of mud weights
    ...|pressure seal]] for many hundreds of feet without penetrating a permeable zone, in which case mud weight may not reflect the presence of [[Abnormal hydros
    4 KB (572 words) - 17:56, 17 February 2022
  • Depositional trap regime
    | ''Tidal-zone carbonates'' || colspan = 5 | ''Tidal channel'' ...e pinch-outs'' || rowspan = 3 | ''Marine carbonate pinch-outs'' || ''Tidal zone'' || ''Tidal-flat carbonate pinch-out'' || colspan = 4 | ''Pinch-out into s
    10 KB (1,231 words) - 20:28, 4 January 2024
  • Kerogen type and maturity
    ! Hydrocarbon generation zone
    4 KB (503 words) - 14:18, 14 February 2022
  • Influence of depositional environment on sandstone diagenesis
    * Illite characterizes shoreline sands deposited in the mixing zone where brackish water forms ...ry-mouth-bar sands rapidly deposited in the freshwater–marine water mixing zone
    8 KB (1,129 words) - 14:11, 6 April 2022
  • Well types
    ...nt of keeping the well within a specific reservoir interval or hydrocarbon zone.<ref name=Shepherd_2009>Shepherd, Mike, 2009, [http://archives.datapages.co ...ctory to keep the well within a specific reservoir interval or hydrocarbon zone. In a strict sense, these wells are rarely perfectly horizontal, but they t
    24 KB (3,753 words) - 19:33, 3 March 2016
  • Pressure detection
    ...erpressure exists. This method of predicting the depth to an overpressured zone has been widely used, especially in the offshore Gulf coast of the United S .... If the drilling rate increases, it can be inferred that an overpressured zone is being encountered. The rate increases because bottom hole conditions cha
    16 KB (2,450 words) - 21:42, 20 January 2022
  • Reservoir engineering
    ...nterval resulted in the transition zone. This zone is used as perforation zone in production well. ...in capillary pressure against the reference position below the hydrocarbon zone can be seen as a function of:
    14 KB (2,122 words) - 17:33, 7 March 2016
  • Biostratigraphic correlation and age determination
    A biostratigraphic zone is a body of rock defined or characterized by its fossil content.<ref name= ...or species composition of [[fossil assemblage]]s within a biostratigraphic zone are useful in refining correlations.
    11 KB (1,595 words) - 18:09, 24 January 2022
  • Utica Shale, Ohio, Pennsylvania, West Virginia and Kentucky
    ...l maturity can be divided into the oil window, wet gas window, and dry gas zone which increases in maturity to the east and to southeast direction.
    3 KB (542 words) - 22:36, 4 March 2022
  • Plate tectonics and basin formation
    ...th's crustal plates that collide with each other will form the subduction zone and cause the forces acting both horizontally and vertically, which will fo ...ction zone developing under the edge of one continent. Once the subduction zone is active the ocean basin is doomed; it will all eventually subduct and dis
    24 KB (3,689 words) - 17:46, 18 April 2019
  • Pore system shapes
    * S<sub>w</sub> = water saturation of the uninvaded zone
    4 KB (528 words) - 13:53, 4 April 2022
  • Midale water saturation and pore geometry
    ...on immobile (irreducible) water saturations]. Point 8 is from a transition zone. Mudstones (B) also are at immobile water saturations but fall on a hyperbo
    4 KB (588 words) - 17:01, 12 April 2022
  • Strain partitioning
    ...ay be partitioned by the development of a [[strike slip fault]] or [[shear zone]] across the actively deforming region.<ref name=TyesTik /><ref name=Fossen ..., Christopher; Hollister, Lincoln (1999). "Large-scale transpressive shear zone patterns and displacements within magmatic arcs: The Coast Plutonic Complex
    13 KB (1,732 words) - 22:01, 23 January 2019
  • Reservoir fluids
    # ''The zone of 100% oil production.'' This is located above the height where the water ...re. In some reservoirs, the entire oil column may be within the transition zone.<ref>Fanchi, J. R., R. L. Christiansen, and M. J. Heymans, 2002, Estimating
    22 KB (3,508 words) - 20:34, 3 March 2016
  • Molyneux:sandbox
    * [[Gouge zone]]
    5 KB (543 words) - 23:45, 8 January 2015
  • Production testing
    ...r drilling, and is often used in deciding whether to complete a particular zone. The total test duration is frequently a function of hole condition, and th ...al DST tool is attached to the drill pipe and run in the hole opposite the zone to be tested. A DST tool typically includes two or more clock-driven, bourd
    14 KB (2,165 words) - 18:42, 20 January 2022
  • Full waveform acoustic logging
    ...png|thumb|300px|{{figure number|2}}FWAL microseismograms across a fracture zone.]] ...ll the wave modes—P, S, and Stoneley. An example of data across a fracture zone is shown in [[:file:full-waveform-acoustic-logging_fig2.png|Figure 2]]. Var
    10 KB (1,530 words) - 20:47, 19 January 2022
  • Show evaluation
    ...cularly C4 and C5), the greater the potential for oil production from that zone<ref name=pt03r18>Ferrie, G. H., Pixler, B. O., Allen, S., 1981, Well-site f ...C1 value may represent [[dry gas]], [[coal]], biogenic gas, or a water wet zone.
    18 KB (2,670 words) - 18:21, 21 January 2022
  • Structural geology fieldwork
    ...y, P., A., Lawton, D., C., Spratt, D., A., 1996, The Oldman River triangle zone: a complicated tectonic wedge delineated by new structural mapping and seis
    4 KB (557 words) - 20:06, 2 February 2022
  • Calcareous microfossils
    ...n and geographic dispersal (i.e., their entire life cycle is in the photic zone of the ocean) as well as their varied and distinct morphologies. The oldest
    5 KB (673 words) - 15:16, 31 January 2022
  • Stratigraphic trap seals
    ...]] (20 m) of the trap will produce both oil and water in a long transition zone. Commercial production can be reached only at the top, where [[buoyancy pre
    5 KB (632 words) - 20:26, 3 February 2022
  • Formation water density
    # Proceed vertically to the appropriate salt concentration expected in the zone.
    5 KB (714 words) - 15:19, 13 September 2022
  • Kerogen type and hydrocarbon generation
    ...type]] alone. Type I kerogen generally has a shallower liquid hydrocarbon zone and generates significantly larger amounts of hydrocarbons. The onset of ge
    5 KB (651 words) - 16:11, 10 February 2022
  • Fault seal-conduit studies
    ....datapages.com/data/bulletns/1994-96/data/pg/0078/0009/1350/1372.htm Fault-zone seals in siliciclastic strata of the Columbus basin, offshore Trinidad]: AA
    5 KB (638 words) - 14:17, 2 February 2022
  • Petroleum exploration
    ...{{figure number|2}}Hydrocarbon reservoir with gas cap, oil zone, and water zone (Source: Saudi Aramco<ref name = SaudiAramco />) ...lf. Seismic survey can be conducted whether in land, marine, or transition zone; and the procedure of all types of seismic survey is quite the same, when s
    15 KB (2,331 words) - 19:12, 17 April 2019
  • Structural analogies
    ...D. A., 1996, En echelon geometry and two-dimensional model of the triangle zone, Grease Creek syncline area, Alberta: Bulletin of Canadian Petroleum Geolog
    4 KB (579 words) - 20:52, 2 February 2022
  • Structural geology
    ...pward fault plane that has high updip angle and flattened at its base into zone of detachment. This angle is continuously changing from nearly vertical in ...here the water velocity is no longer supporting the particles weight. This zone is called depositional center ([[depocenter]] for short) and has higher sed
    14 KB (2,168 words) - 21:31, 13 March 2019
  • Drill stem testing
    ...bore that provides information on whether or not to complete the well. The zone in question is sealed off from the rest of the wellbore by packers, and the The best time to run a DST is just after drilling through a potential pay zone, when exposure to damaging fluids is minimal and the hole is in its best co
    26 KB (4,009 words) - 15:09, 24 January 2022
  • Offshore exploration and exploitation
    ...stered by a magnetometer installed in a plane that flies over the interest zone. Sedimentary formations with hydrocarbons don't manifest [[magnetics]] prop
    5 KB (708 words) - 22:00, 10 April 2019
  • Production logging
    ...shown in [[:file:production-logging_fig5.png|Figure 5]]. In this example, zone A produces water, while the zones above it are all gas producers. A plug se ...D., B. F. McGhee, and J. A. McGuire, 1983, Guidelines for 90% accuracy in zone isolation decisions: Richardson, TX, Society of Petroleum Engineers, SPE 12
    12 KB (1,726 words) - 16:48, 20 January 2022
  • Production problems
    ...tical pressure gradient exceeds the hydrostatic gradient down to the water zone, the water is pulled toward the well, resulting in a cone-shaped distortion ...um production rates. However, because of pressure depletion within the oil zone, a pressure differential will eventually develop between the water and/or g
    16 KB (2,540 words) - 18:41, 20 January 2022
  • Cuba: Geology and regional setting
    ...[[Pinar del Rio]]. Carbonates exist in the highly deformed [[Motagua fault zone]], in central [[Guatemala]], but similarity to carbonates found in Cuba is ...tes] are common throughout the Caribbean and extend from the Motagua fault zone, between the Maya and Chortis block, to [[Puerto Rico]]. They also form the
    13 KB (1,851 words) - 20:43, 7 July 2016
  • Drive mechanisms and recovery
    In a water drive reservoir, the oil zone is in communication with an aquifer that provides the bulk of the reservoir ...the entire reservoir and water influx moves vertically upward into the oil zone. In an edge water drive, the aquifer is located on the flanks of the reserv
    16 KB (2,374 words) - 20:46, 19 January 2022
  • Great American carbonate bank
    ...occurred during deposition of the Early Ordovician Symphysurina trilobite Zone or during deposition of the Cordylodus angulatus and basal Rossodous manito
    5 KB (768 words) - 18:39, 1 August 2016
  • 3-D seismic data: the data cube
    ...ne smearing], or [http://wiki.seg.org/wiki/Dictionary:Fresnel_zone Fresnel zone], problem)
    5 KB (813 words) - 19:05, 27 January 2022
  • Pressure prediction: analysis of cuttings
    ...applies to shale, so we don't have to wait for a mud kick from a permeable zone to anticipate significant overpressure. Cuttings tend to be large and fresh
    5 KB (818 words) - 17:56, 17 February 2022
  • Hydrocarbon expulsion, migration, and accumulation
    ...carbon accumulation forms when migrating hydrocarbon filaments encounter a zone (the seal), either laterally or vertically, with pore throat sizes smaller
    6 KB (828 words) - 16:32, 4 April 2022
  • Fault plane profile construction
    ...mited by either the [[displacement pressure]] (P<sub>d</sub>) of the fault zone, the [[Calculating charge volume|charge volume]], or the top seal—not a J
    6 KB (834 words) - 14:51, 29 March 2022
  • Pressure compartment seals
    ...ure influences the development of authigenic materials. Quite possibly the zone of mineralization stays near the [[temperature::200&deg;F]] isotherm, migra
    5 KB (763 words) - 17:58, 17 February 2022
  • Llanos basin
    ...dation]] as well as a currently active meteoric water flow. The transition zone shows interactions of deep fluid [[updip]] migration and meteoric water [[d
    23 KB (3,247 words) - 22:50, 8 January 2019
  • Fracture trap regime
    ...intimately associated with and controlled by tectonic folds. || Related to zone of maximum curvature.
    7 KB (895 words) - 16:04, 13 April 2022
  • Fluid flow fundamentals
    ...and fluid moves radially toward the wellbore. It also assumes constant pay zone thickness, constant isotropic permeability, and an ideal liquid (homogeneou * ''h'' = pay zone thickness (ft)
    20 KB (3,155 words) - 21:20, 19 January 2022
  • East Breaks overburden rock
    ..., which would accelerate burial of potential source rocks into the thermal zone for [[Petroleum generation|hydrocarbon generation]].
    6 KB (929 words) - 19:41, 22 March 2022
  • Great American carbonate bank, biostratigraphy
    ...ater successions (their extracratonic euxinic realm). A similar assemblage-zone concept was used in the definition and correlation of the original alphanum ...this convention, barren intervals are assigned to the top of the subjacent zone or subzone. This practice has the disadvantage in studies of subsurface mat
    58 KB (8,121 words) - 16:35, 1 August 2016
  • Sandstone diagenetic processes
    ! rowspan = 2 | Zone || rowspan = 2 | Temperature || colspan = 2 | Major diagenetic processes
    7 KB (870 words) - 20:30, 5 April 2022
  • Procedure for geometrical analysis
    * Subaerial (weathered) zone beneath a channel
    6 KB (862 words) - 15:20, 4 February 2022
  • Sea level cycles and carbonate diagenesis
    ...a sequence is subjected to the processes that characterize each diagenetic zone. Each cycle leaves a diagenetic sequence mainly seen in the form of differe
    7 KB (960 words) - 21:00, 6 April 2022
  • Braided fluvial reservoirs
    ...JPG|thumb|300px|{{figure number|3}}A high-permeability conglomeratic thief zone from the braided river reservoir of the Prudhoe Bay field, Alaska (from Atk ...95% of the total injected water entering a 3-m (10-ft)-thick conglomeratic zone with a permeability of 4 darcies ([[:file:M91FG183.JPG|Figure 3]]).
    13 KB (1,859 words) - 21:29, 12 March 2019
  • Open hole tools
    ...e the measured currents must pass through the drilling mud and the flushed zone to enter the unaltered formation, laterolog measurements are usually unfavo ...oresistivity'' devices are used to estimate the resistivity of the flushed zone immediately adjacent to the borehole. The devices are of the pad contact ty
    23 KB (3,350 words) - 17:26, 18 January 2022
  • Well completion
    ...gure number|6}}Wellbore diagram of a single completion with an alternative zone.]] ...The selection of the perforating method is influenced by the depth of the zone, the temperature, the pressure, the need for well stimulation, and the need
    19 KB (2,910 words) - 21:06, 18 January 2022
  • Sidewall coring
    ...he tool is attached to a conventional drill string and is lowered into the zone of interest. An integral arm pushes the core barrel against one side of the
    7 KB (1,100 words) - 21:16, 19 January 2022
  • Cross-leaking fault
    ...ult. The difference in hydrocarbon contacts can be caused not by the fault zone material but by differences in the [[displacement pressure]] (P<sub>d</sub>
    8 KB (1,155 words) - 21:31, 24 March 2022
  • Rate of penetration
    ...d stratigraphic position and is used to predict when the well will reach a zone of interest.
    7 KB (1,049 words) - 19:02, 20 January 2022
  • Ti in zircon geothermometer
    ...ation and temperature to determine the crystallization temperature of that zone of the zircon. The titanium-to-temperature relationship was calculated usin ...in-zircon thermometers during high-temperature metamorphism (Ivrea-Verbano Zone, northern Italy): Contributions to Mineralogy and Petrology 165 (4): 757-77
    16 KB (2,328 words) - 22:11, 3 December 2015
  • Fishing
    ...al material, to abandon the well, or to attempt to complete in a shallower zone. Because all but the first of these options are costly, and the last is oft
    8 KB (1,156 words) - 21:19, 19 January 2022
  • Tuscaloosa Marine Shale, Gulf Coast Basin, Louisiana and Mississippi
    The TMS is characterized by a high resistivity zone (HRZ) near the base of the unit. The HRZ, when present, has a resistivity o
    7 KB (1,007 words) - 21:15, 3 March 2022
  • Relationship between porosity and permeability on fractured basement reservoir
    ...ture is circulated from matrix fracture and return to fracture, saturation zone with oil and water phase. * Process is assigned as throughout flow to second zone, matrix and fracture.
    29 KB (4,601 words) - 16:09, 12 April 2016
  • Faults: structural geology
    * the composition and microstructure of material in the fault zone ...ng faults. They potentially provide pathways for fluid flow across a fault zone (from Peacock and Sanderson<ref name=Peacockandsanderson_1994>Peacock, D. C
    63 KB (9,496 words) - 16:51, 15 January 2024
  • Amplitude (seismic)
    ...he three effects below are also indicated fluid contact with the flat spot zone as a result of contact fluid on seismic data.
    8 KB (1,291 words) - 15:49, 18 January 2017
  • Balanced cross sections
    ...example from the foreland thrust system of the southern Bolivian Subandean zone: Tectonics, vol. 11, p. 523–536, DOI: [http://onlinelibrary.wiley.com/doi
    8 KB (1,060 words) - 15:07, 3 February 2022
  • Subsurface maps
    ...level is a useful reference datum. Commonly contoured horizons are top of zone or top of net pay. Control points are provided by surveyed wells and can be * ''H'' = height or thickness of pay zone (feet)
    22 KB (3,076 words) - 13:56, 24 January 2022
  • Structural play geology
    ...geotime_dating/a/timeyardstick.htm Rb-Sr, Ar-Ar, and K-Ar dating] of fault zone material | Fabric analysis and relative dating of fault zone diagenesis can be used in some cases to date periods of fault motion.
    18 KB (2,422 words) - 14:21, 2 February 2022
  • Cuba: Geologic history
    ...of the middle Cretaceous quartzose clastics, and the dip of the subduction zone. '''Stratigraphic unit names followed by an asterisk (i.e., Capitolio*) wer ...conditions were separated by a [[Conglomerate|conglomeratic]] [[breccia]] zone (Sagua la Chica* belt) representing a [[forereef]] facies, although reefs t
    30 KB (4,263 words) - 22:00, 23 January 2019
  • Kerogen
    ! Hydrocarbon generation zone ...of [[length::2.6 km]] the modeled well is presently in the oil generation zone and approximately 25% of the kerogen in the source rocks at this depth has
    17 KB (2,363 words) - 17:40, 9 February 2022
  • Introduction to biosteering operation
    ...ample of this is the Orbulina evolutionary lineage in the Miocene. D) Acme zone showing a great abundance of a certain species or two compared to the whole
    20 KB (2,916 words) - 21:04, 21 April 2022
  • Tethys region
    | Eastern Tethyan Margin (Countries approximately east of Dead Sea fault zone; including Syria, Jordan, Iraq, Iran, Turkey) || 194 || 47 | Western Tethyan Margin (Countries approximately west of Dead Sea fault zone) || 45 || 2
    23 KB (3,325 words) - 14:52, 1 August 2016
  • Seismic data display
    ...re of the type of anomaly you are trying to discern, such as porosity, gas zone, or facies changes. This allows the correct selection of a data processing
    9 KB (1,404 words) - 21:17, 19 January 2022
  • Fault plane profile
    ...mited by either the [[displacement pressure]] (P<sub>d</sub>) of the fault zone, the [[Calculating charge volume|charge volume]], or the top seal—not a J
    9 KB (1,461 words) - 21:57, 28 March 2022
  • Wireline formation testers
    ...line-formation-testers_fig7.png|{{figure number|7}}Pressure contour map in zone of water injection. Copyright: Western Atlas International, 1987; courtesy
    10 KB (1,446 words) - 17:42, 18 January 2022
  • Deltaic environments
    ...s to extremely actively subsiding basins; (b) deltas form primarily in the zone of interaction between freshwater and marine processes, one of the most com
    9 KB (1,310 words) - 19:47, 12 January 2016
  • Geologic mapping (UGM)
    ...onate fields are abundant in Southern Mountain zone, Kendeng zone, Rembang zone.
    29 KB (4,733 words) - 15:34, 15 January 2024
  • Cross-well electromagnetic tomography monitoring of fluid distribution
    ...stivity distance away from the borehole passing areas close to the invaded zone. This capability is essential when surveying fields that have been in produ ...r|2}}Cross-well EM current direction between the wells and to the targeted zone.<ref name=Schlumberger_2021>S. O. Glossary, 2021, [https://glossary.oilfiel
    18 KB (2,715 words) - 18:29, 8 February 2024
  • Siliciclastic shorelines and barrier island reservoirs
    ...Tulsa, PennWell Books, 1008 p.</ref> This behavior can be reinforced by a zone of mica concentration at the top of the lower shoreface, which acts as a ba ...positional environments and reservoir compartmentalization within the Frio zone 21-B reservoir, Tijerina-Canales-Blucher field, South Texas (abs.): Transac
    18 KB (2,607 words) - 15:33, 15 January 2024
  • Diagenetically complex reservoir evaluation
    | Early stage emplacement of oil or gas retards diagenetic alterations in the zone saturated with hydrocarbons | Increased calcite/aragonite cementation in shallow marine phreatic zone where steep slopes or high energy conditions occur
    31 KB (4,171 words) - 18:22, 21 January 2022
  • Petroleum basins of Turkey
    ...d and described which correspond to either a continental block or a suture zone that is amalgamated as a result of the Neo-Tethyan collision and which is m ...s also marked with another ophiolitic imbricate zone representing a suture zone which formed as a result of the collision of the Anatolide-Tauride platform
    52 KB (7,769 words) - 20:28, 18 January 2017
  • FWhitehurst sandbox
    * Fresnel zone http://wiki.seg.org/wiki/Dictionary:Fresnel_zone
    22 KB (3,024 words) - 21:42, 19 December 2014
  • The Neuquén Basin: Sequence Stratigraphy of Vaca Muerta Formation
    ...ssic-Early Cretaceous: development of a steeply dipping, active subduction zone and the associated evolution of a magmatic arc along the western margin of ...Late Cretaceous-[[Cenozoic]]: transition to a shallowly dipping subduction zone resulting in compression and flexural subsidence, asocciated with 45-57 km
    16 KB (2,490 words) - 15:32, 8 January 2021
  • Stimulation
    ...t upon how successfully the proppant has been placed within the productive zone and how much conductivity the propped fracture has relative to that of the ...the clays near the wellbore and remove them completely. By this means, the zone most susceptible to damage during drilling or completion operations is clea
    24 KB (3,633 words) - 13:55, 24 January 2022
  • White paper: Hydraulic fracturing
    ...ent arrives to pump fluids and proppant from the surface into the targeted zone of stimulation, the rock layer containing oil and natural gas. This part o Because of this, individual hydraulic fractures and the zone of fractured rock always are wider than they are tall. While each is unique
    27 KB (4,076 words) - 16:33, 19 July 2016
  • Austin Chalk, onshore U.S. Gulf Coast
    ...C., 2021. Regional productivity in the Austin Chalk with emphasis on fault zone production in the Karnes Trough Area. Geofulf abstract.
    8 KB (1,200 words) - 21:22, 3 March 2022
  • Capillary pressure
    * Thickness of the transition zone ...ighly irregular vertical saturation profile. Note also the wide transition zone in rock type B caused by poor sorting of the pore throats.]]
    23 KB (3,315 words) - 16:59, 19 January 2022
  • Paleoenvironmental analysis
    ...n the position and intensity of low-oxygen water within the oxygen minimum zone.
    10 KB (1,252 words) - 19:55, 31 January 2022
  • Geology workstation
    ...d. Also, the interpretation process generates new data elements, including zone average [[porosity]], net pay, and [[hydrocarbon]] pore feet. ...ntire field study can be processed, complete with field-wide crossplots by zone. Often the output data from the log analysis process is imported into the m
    19 KB (2,872 words) - 14:28, 20 January 2022
  • Iraq petroleum geology
    The High Zagros [[Nappe]] zone further to the northeast is characterized by large anticlinal mountains tha ...Figure 5]]). There are no oil and gas discoveries in the High Zagros Nappe zone, although rocks containing bitumen and organic-rich rocks are exposed.
    78 KB (7,926 words) - 16:25, 30 January 2017
  • Risk: dealing with risk aversion
    ...lopment geologist should be cautious in generating risky edge wells or new zone ventures.
    10 KB (1,487 words) - 18:22, 21 January 2022
  • Burial destruction
    ...33, p. 121–125.</ref> This is the traditional base of the gas preservation zone.
    11 KB (1,525 words) - 18:50, 1 February 2022
  • Delta plain, upper
    ...B. Trough-shaped cross-bedding in lenticular sets that form the overlying zone in a fining-upward cycle of a braided channel. C. Ripple drift bedding sepa Overlying this unit is a zone displaying finer [[grain size]] and composed of lenticular-shaped units of
    33 KB (4,905 words) - 16:40, 6 April 2016
  • Using and improving surface models built by computer
    ...his technique is used, then creating displays and volumes for a surface or zone requires careful manipulation of a large number of surface models. This is ...the reservoir, then these variables may change significantly in the wedge zone relative to values where the reservoir is full thickness. Often these chang
    40 KB (6,039 words) - 20:49, 19 January 2022
  • Delta plain, subaqueous
    ...ver and sea water in the absence of tides: in Problems of the humid tropic zone deltas and their implications: UNESCO, Proc. Dacca Symp., p. 175-180.</ref> ...rrent ripples" and small-scale ripple laminations common in the transition zone between the distal bar and distributary-mouth bar. G. Slump structure commo
    60 KB (9,022 words) - 17:17, 21 March 2016
  • Amplitude versus offset (AVO) analysis
    # The thickness of the pay zone
    12 KB (1,723 words) - 18:41, 20 January 2022
  • Prudhoe Bay field
    ...nference-paper/SPE-24698-MS Characterization of a fluvial-dominated delta: Zone 1 of the Prudhoe Bay Field], Paper No. 24698: Society of Petroleum Engineer
    11 KB (1,634 words) - 16:34, 26 April 2016
  • Core-to-log transformations and porosity-permeability relationships
    If one considers the zone of investigation of the formation density tool in an 8-in. borehole ([[:fil
    14 KB (1,893 words) - 20:15, 2 February 2016
  • Depth and thickness conversion
    ....png|Figure 7a]]). The assumption is also violated if the well traverses a zone of strong curvature in the rock such that dip changes rapidly ([[:file:conv
    17 KB (2,363 words) - 16:49, 20 January 2022
  • Preprocessing of logging data
    | Mudcake thickness, ''R''<sub>xo</sub> zone resistivity, mudcake resistivity, and hole size
    13 KB (2,094 words) - 17:42, 18 January 2022
  • Cross-borehole tomography
    ...of stations, usually regularly spaced over a depth range that includes the zone of interest in the reservoir. The spacing of these stations and the vertica
    14 KB (2,060 words) - 20:51, 19 January 2022
  • Iran petroleum systems
    ...iation of structural style and basin evolution in the Central Zagros (Izeh zone and Dezful embayment), Iran]: Marine and Petroleum Geology, v. 21, p. 535-5
    27 KB (3,901 words) - 13:51, 26 January 2017
  • Phanerozoic Tethys region
    ...123.</ref> <ref name=Metcalfe_2006 />). In the same time interval, a major zone of northward subduction of Paleotethyan oceanic crust was active along the ...ction zone of Panthalassa eastward to a triple junction joining this shear zone, the Neo-Tethys ridge, and the subduction of Paleo-Tethys below the souther
    79 KB (11,542 words) - 18:47, 19 July 2016
  • Reserves estimation
    * ''h'' = height or thickness of pay zone (ft) from log and/or [[Overview of routine core analysis|core data]]
    16 KB (2,550 words) - 17:47, 21 January 2022
  • Biostratigraphic applications in hydrocarbon exploration
    ...g: planning the well paths, setting casing point, determining overpressure zone and calling for total depth. In setting casing points for example, assignin
    14 KB (1,899 words) - 21:03, 21 April 2022
  • Drilling a well
    ...rial to the mud will solve the problem. This clogs up the lost circulation zone and prevents any further losses.
    15 KB (2,385 words) - 15:05, 1 August 2016
  • Kingfisher field
    ...e sandstone member is subdivided into the Brae 1 and Brae 2 zones and each zone can in turn be further subdivided into two discrete sandstone units ([[:fil
    16 KB (2,358 words) - 16:28, 11 January 2024
  • Basin-centered gas systems: evaluation and exploration strategies
    ..., and T. H. Mroz, 1999, Natural fracturing in horizontal core near a fault zone: The Rock Island Unit 4-H well, Green River basin, Wyoming: Integrating geo ....73% R<sub>o</sub> to map the top of the gas- and water-bearing transition zone above gas-saturated reservoirs in the Piceance basin of Colorado and the Wi
    34 KB (5,070 words) - 15:11, 23 August 2016
  • Biostratigraphy in sequence stratigraphy
    Biostratigraphic correlation between sections separated by a [[fault]] zone or other major geologic feature is frequently much more reliable than [[Sei
    16 KB (2,247 words) - 19:23, 24 January 2022
  • Tectonic modeling
    * Jamison, W., R., 1996, Mechanical models of triangle zone evolution: Bulletin of Canadian Petroleum Geology, vol. 44, p. 180–194.
    16 KB (2,083 words) - 21:28, 2 February 2022
  • Shale tectonics
    ...luids migrating through shales will crack and hydraulically [[fracture]] a zone through which they will migrate upward.
    17 KB (2,466 words) - 16:16, 10 January 2024
  • Jordan petroleum geology
    ...m mid-ocean spreading east of the Arabian Plate, as the active collisional zone in North Africa was located far away in Morocco.<ref name=Craigetal_2008>Cr
    16 KB (2,310 words) - 15:13, 19 January 2017
  • Rock-water reaction
    ...f> These data allow calculation of the radius of the permeability impaired zone and aid in sizing subsequent acid volumes required to clean up the impairme
    17 KB (2,356 words) - 19:24, 19 January 2022
  • Reservoir quality
    ...is generally performed after the well has been conditioned by sealing the zone(s) of interest and allowing the production of fluids (see [[Drill stem test
    18 KB (2,514 words) - 17:47, 21 January 2022
  • Rock-water reaction: formation damage
    ...f> These data allow calculation of the radius of the permeability impaired zone and aid in sizing subsequent acid volumes required to clean up the impairme
    17 KB (2,380 words) - 18:23, 21 January 2022
  • Shale-oil resource systems
    .... The TOC values average about 2.2% with less than 25% carbonate. A deeper zone from 1493.5 to 1569.7 m (4900–5150 ft) shows a very high oil content but ...www.dmr.nd.gov/oilgas/bakkenwells.asp Bakken horizontal wells by producing zone, upper Bakken Shale].</ref> and the West Siberian Jurassic Bazhenov Shale.<
    97 KB (14,873 words) - 19:53, 11 January 2024
  • Marcellus Shale (Devonian) -- Appalachian Basin
    ...2009; Erenpreiss and others, 2011; Wang and Carr, 2013). The organic-rich zone of the Marcellus Shale has a net thickness of 50 to over 400 feet (Erenprei
    19 KB (2,773 words) - 21:36, 4 March 2022
  • Structural restoration
    ...ber|1}}3-D restoration conducted on a faulted and folded layer (Sub-Andean Zone, Bolivia), showing a) the deformed state and b) the restored state. c) Dist
    17 KB (2,335 words) - 17:14, 13 October 2022
  • Cross section
    Lines connecting correlative formation or zone tops between wells will show the lateral variation in thickness of these un
    20 KB (3,029 words) - 16:09, 24 January 2022
  • Petroleum reservoir fluid properties
    If a reservoir contains both a gas cap and an oil zone, then both fluids are normally at saturated conditions initially. Initial p
    19 KB (2,721 words) - 21:21, 19 January 2022
  • Influence of mechanical stratigraphy on deformation styles
    Ferrill, D., Morris, A., 2008, Fault Zone Deformation Controlled by Carbonate Mechanical Stratigraphy, Balcones Fault
    23 KB (3,162 words) - 17:28, 5 December 2023
  • Permeability
    It is necessary to average permeability determined for each pay zone to obtain permeability distribution. The most commonly used method to avera
    19 KB (2,716 words) - 19:02, 20 January 2022
  • Geodynamics of terrestrial exoplanets
    ...idates]] ([[Earth-like exoplanet|terrestrial exoplanets]] in the habitable zone of their host star). Data set is 2,740 planets orbiting 2,036 stars. The Ea
    19 KB (2,736 words) - 12:59, 14 March 2019
  • Wattenberg field
    ...Belt intersects the Denver Basin. The mineral belt is a northeast trending zone across Colorado of Late Cretaceous to early Tertiary mineralization. The mi ...st, v. 55, no. 1, p. 19–52.</ref> The mineral belt is a northeast trending zone across Colorado of Late Cretaceous to early Tertiary mineralization. The mi
    72 KB (10,249 words) - 20:06, 15 January 2024
  • South Viking Graben
    ...://doi.org/10.1144/SP471.9 doi:10.1144/SP471.9].</ref>). The major [[fault zone]] on the western side of the SVG can be defined by three significant lineam
    23 KB (3,562 words) - 19:06, 17 January 2022
  • Data: sources
    ...ns of the higher alkanes on the gas chromatograph can indicate that an oil zone has been penetrated. The mud log is used as a first pass, qualitative indic ...For example, the spectral gamma-ray log response can be used to identify a zone of potassium feldspar dissolution in leached sandstone below an unconformit
    43 KB (6,686 words) - 13:44, 18 March 2019
  • Uncertainties impacting reserves, revenue, and costs
    ...he geologist may think there is only a 10% chance that the anticipated pay zone will be less than 8 ft thick, 50% sure that it will be less than 12 ft thic
    21 KB (3,123 words) - 19:27, 19 January 2022
  • Three-dimensional modeling of clinoforms in shallow-marine reservoirs
    ...hy of the Upper Ferron Sandstone Last Chance Delta: An application of coal-zone stratigraphy], in T. C. Chidsey, Jr., R. D. Adams, and T. H. Morris, eds., ...a constant thickness of 0.2 m (0.66 ft); however, each facies-association zone is gridded separately, and the grid layers pinch out against facies-associa
    113 KB (16,689 words) - 22:11, 15 January 2024
  • Utilization of the industrial revolution 4.0 in oil and gas exploration
    ...a in them as interpreting these data can facilitate in knowing whether the zone being penetrated is hydrocarbon bearing or not.
    21 KB (3,096 words) - 20:59, 21 April 2022
  • Appalachian Basin Marcellus gas play
    ...ore than 1100 wells have been completed as Marcellus producers as a deeper zone in this area. The gas is typically commingled with that from shallower rese ...shows were encountered in the Lockport interval, attempts to complete this zone failed. During drilling, several large gas shows were observed and recorded
    89 KB (13,415 words) - 19:16, 16 January 2024
  • Barmer basin
    .... The rapid deepening to the south coincides with a faulted basement hinge zone that controls the younger regional tilting in the basin and may represent a
    24 KB (3,528 words) - 22:50, 8 January 2019
  • Hammerfest basin
    ...Andreassen, J. Knies, L. Plassen, B. Fotland, 2008, Gas hydrate stability zone modelling in areas of salt tectonics and pockmarks of the Barents Sea sugge
    23 KB (3,382 words) - 18:40, 10 January 2019
  • Vaca Muerta play
    ...d geomechanics to define the rock properties. The selection of the landing zone, and the associated understanding of the resource distribution, is importan ...TOC (and associated high porosity) are fundamental elements for a landing zone, the proximal bottomsets and the lower foresets were soon indicated as zone
    77 KB (11,201 words) - 20:07, 15 January 2024
  • West Texas Super Basin
    ...with six stages: three in the Wolfcamp C sandstones, one in the new target zone in the upper middle Wolfcamp Shale (Wolfcamp B), and two in the upper shale ...loped fracture network in the lower Wolfcamp A helped determine the target zone for the first horizontal well in the play.]]
    157 KB (23,278 words) - 18:36, 16 January 2024
  • In-situ stress characterization and applications
    Borehole breakout is the breaking zone of the wellbore’s wall, causing the hole to have an irregular elongated s
    28 KB (4,031 words) - 15:49, 28 November 2022
  • Sill intrusion mechanism, parameters, and temperature effect of sills on a petroleum system
    ...n (Brazil). The distance between the bottom of the sill and the top of the zone containing dry gas is roughly equal to 150% of the thickness of the sill. D
    29 KB (4,365 words) - 21:07, 21 April 2022
  • Dolomite and dolomitization: Implications for reservoir characterization
    ...iated with evaporites are considered to be formed in mixed marine-meteoric zone while dolomites associated with evaporites are formed in seepage-reflux and
    38 KB (4,996 words) - 21:07, 21 April 2022
  • Shale-gas resource systems
    ...I<sub>o</sub> of 700 or higher, or that all are equivalent to the Mahogany zone (950 mg HC/g TOC), is inconsistent with measured values that range from abo
    73 KB (10,728 words) - 18:16, 11 January 2024
  • Medical geology
    ...ciency in their soils. This accounts for the spread of HIV-1 virus in this zone as selenium which inhibits the replication of HIV-1 is lacking in their soi
    83 KB (12,860 words) - 14:03, 10 April 2019
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