Search results

• Hydrodynamics
  ...ertical component to their movement but, on a basinwide scale, the lateral flow component is of major concern. ...ometric surface for hydrodynamic updip and downdip flow and hydrostatic no flow. From Schowalter;<ref name=Schowalter1979>Schowalter, T. T., 1979, [http://
  5 KB (658 words) - 22:04, 17 February 2022
• Migration by separate phase
  ...separate-phase migration: formation of small free hydrocarbon masses, slug flow, cosolution, and compositional changes due to phase changes. ==Slug flow in primary migration==
  8 KB (1,155 words) - 15:17, 14 February 2022
• Carbonate porosity formation and preservation
  ...]] related). Deep diagenetic processes can be both fabric selective (fluid flow through interparticle or intercrystalline pores) or nonfabric selective (co ...of quality, points plotting along the contours represent rocks with equal flow characteristics (''see'' [[Characterizing rock quality]]). With the excepti
  5 KB (708 words) - 17:27, 5 December 2023
• Pc curves and saturation profiles
  ...proximated using the [[capillary pressure]] (P_c) curves for the flow units it contains. The data in a P_c curve can be converted to gi * An estimate of [[buoyancy pressure]]s required to enter the pore throats of flow units.
  5 KB (752 words) - 16:53, 4 April 2022
• Production histories
  ...decline can be used effectively to forecast future performance. The log of flow rate is plotted versus time. In [[:file:production-histories_fig1.png|Figur where ''q''_a = abandonment flow rate
  11 KB (1,656 words) - 18:41, 20 January 2022
• Magnetotellurics survey measurements
  ...ary H-field (an AC signal) switches polarity, a secondary E-field (current flow) is generated in the subsurface. Thus, the horizontal E-field data provides ...a car. An alternating or spinning magnetic field (H-field) sets up current flow in the wire windings in the alternator, which in turn charges the battery.
  4 KB (519 words) - 19:57, 27 January 2022
• Geothermal gradient
  ...or degrees Fahrenheit per 100 feet. Gradients are sensitive to basal heat flow, lithology, circulating groundwater, and the cooling effect of drilling flu
  901 bytes (127 words) - 19:53, 25 June 2015
• Seal capacity of breached and hydrocarbon-wet seals
  ...the process is not completely understood, laboratory studies suggest that flow continues until the hydrocarbon column shrinks to half its original height. * [[Saturations required for hydrocarbon flow]]
  5 KB (693 words) - 14:23, 1 April 2022
• East Breaks petroleum geology
  ...al_systems#Deep_water_marine_deposits|Slope basin]] [[Gravity flow|gravity-flow]] sands are the principal reservoir target in the High Island–East Breaks The [[gravity]]-flow sands were transported and deposited within sea-floor physiographic lows be
  4 KB (494 words) - 13:44, 5 December 2023
• Flow units for reservoir characterization
  | chapter = Flow units for reservoir characterization ...r., 1987, [http://archives.datapages.com/data/browse/aapg-bulletin/1987/5/ Flow unit concept—integrated approach to reservoir description for engineering
  16 KB (2,282 words) - 20:46, 19 January 2022
• Production testing
  ...mhole pressure, (3) an indication of well productivity, and (4) short-term flow and pressure buildup tests from which [[permeability]] and the extent of da ...he mud column in the annulus. When the tool is opened, reservoir fluid can flow into the drill pipe (and possibly to the surface); pressure is recorded con
  14 KB (2,165 words) - 18:42, 20 January 2022
• Hydrocarbon migration
  * How is cross-formational flow of hydrocarbons accomplished? ...on-driven water generally are too slow to significantly affect hydrocarbon flow.
  6 KB (865 words) - 14:33, 6 April 2016
• Production logging
  ...owmeter, and fluid identification logs) and (2) those designed to evaluate flow quantitatively. Often combinations of these logs are required to be effecti ===Flow detection in and around pipe===
  12 KB (1,726 words) - 16:48, 20 January 2022
• Surface production equipment
  ...small orifice, usually from 1/8 to 3/4 in. in diameter, that restricts the flow rate. The flow rate from either an oil well or a gas well can be easily estimated from the
  9 KB (1,343 words) - 18:42, 20 January 2022
• Pore throat size and connectivity
  Even very large pores contribute nothing to fluid flow unless they connect to other pores. Connectivity increases with the size of How do pore shape, pore throat size, and pore throat abundance affect the flow dynamics of a reservoir? Visualize a room with a door in each wall. The num
  4 KB (650 words) - 14:23, 4 April 2022
• Pore system fundamentals
  ...on, E. B., S. M. Goolsby, and M. H. Franklin, 1994, Subtle seals and fluid-flow barriers in carbonate rocks, in J.C. Dolson, M.L. Hendricks, and W.A. Wesco ...is controlled by the size and number of pores. A rock's [[permeability]] (flow capacity) is controlled by the size, shape, and number of the pore throats
  3 KB (388 words) - 13:52, 4 April 2022
• Hydrodynamics: change in configuration
  ...the [[dip]] of the [[reservoir]]-[[seal]] interface on the down-potential (flow downdip) side of the trap, the [[accumulation]] will spill downdip. If petr ...of [[accumulation]]s under hydrostatic conditions. If present hydrodynamic flow affects [[fluid contacts]] of reservoirs [[Calculating charge volume|charge
  5 KB (625 words) - 15:31, 1 February 2022
• Migration rate calculation
  ...ks with tube-shaped pore systems; however, it is only an approximation for flow in rocks with high percentages of [[clay]]s, like [[shale]]s, due to the pl ...arbon migration path will trap hydrocarbons and make continued hydrocarbon flow updip less likely.
  4 KB (618 words) - 19:40, 14 February 2022
• Hydrology and sandstone diagenesis
  ...., Clastic Diagenesis: AAPG Memoir 37, p. 3–14.</ref> lists three types of flow of water in a basin: * '''Meteoric flow'''—water infiltrates shallow portions of a basin from precipitation or su
  6 KB (787 words) - 13:43, 6 April 2022
• Relative permeability
  ...er and oil or gas in varying amounts. Each interferes with and impedes the flow of the others. The aquifer portion of a reservoir system by definition cont ...w</sub> decreases and the effective size of the pore throat for oil or gas flow (B) increases.]]
  9 KB (1,351 words) - 13:31, 5 April 2022
• Formation fluid pressure from drill stem tests
  ...pressures recorded when the tool is opened up to the formation and fluids flow up the drillpipe. B is the initial flowing pressure; B′ is the final flow ...osed. The rapid expulsion of fluid from the reservoir during the preceding flow period causes reservoir pressure to drop near the wellbore. ISIP is the pre
  6 KB (997 words) - 17:55, 17 February 2022
• Economics: fundamental equations for oil and gas property evaluation
  ...ax profit or (loss), expressed as present value of the cumulative net cash flow stream ...alue of money]], the net cash flows are expressed as a ''discounted'' cash flow stream, so the entire venture can be comparedto current alternative financi
  6 KB (842 words) - 19:26, 19 January 2022
• Drilling problems
  Hole instability occurs when encountered formations flow, slough, or swell. The most unstable formations are [[shale]]s and [[Evapor ...he formation ([http://dictionary.reference.com/browse/plastic+flow plastic flow]). Abnormally high pore pressures can cause [[Wikipedia:Blowout (well drill
  5 KB (732 words) - 21:18, 19 January 2022
• Perforation design
  ...meability anisotropy is one of the main factors that affects the reservoir flow property. One common case of using guns with high density is due to the fac ...d charges. Moreover, skin damage (formation damage) can heavily affect the flow regime of the reservoir. There are multiple kinds of skin damage such as we
  12 KB (1,786 words) - 21:02, 21 April 2022
• Fault seal-conduit studies
  ...http://archives.datapages.com/data/bulletns/1998/03mar/0387/0387.htm Fluid flow in a faulted reservoir system: fault trap analysis for the Block 330 field ...lletns/1994-96/data/pg/0079/0005/0600/0642.htm Effect of faulting on fluid flow in porous sandstones: geometry and spatial distribution]: AAPG Bulletin, vo
  5 KB (638 words) - 14:17, 2 February 2022
• Pressure transient testing
  * Verification of flow barriers (such as faults) and estimates of distance to these barriers ===Single-rate flow tests===
  15 KB (2,314 words) - 17:45, 21 January 2022
• East Breaks hydrocarbon migration model
  ...nown [[gravity]]-flow sandstone reservoirs. The deepwater lowstand gravity-flow reservoir sandstones are separated by hemipelagic mudstones deposited durin ...rom Cretaceous and Tertiary strata in southern Louisiana for aqueous fluid flow from deep, [http://www.glossary.oilfield.slb.com/en/Terms/g/geopressure.asp
  10 KB (1,376 words) - 16:00, 23 March 2022
• Pore and pore throat sizes
  ...ze of a pore throat is the radius of a circle drawn perpendicular to fluid flow and fitting within its narrowest point. Absolute size of a pore is the radi ...on, E. B., S. M. Goolsby, and M. H. Franklin, 1994, Subtle seals and fluid-flow barriers in carbonate rocks, ''in'' J. C. Dolson, M. L. Hendricks, and W. A
  4 KB (516 words) - 14:04, 4 April 2022
• Glossary
  ;AOF:absolute open flow ;CAOFP:calculated absolute open flow potential
  5 KB (840 words) - 13:51, 18 March 2019
• Coal bed methane (UDip)
  ...cleat system coupled through the desorption process. The mechanism for gas flow in the coal involves three steps: # Darcy flow through the fracture (cleat) network to the wellbore.
  10 KB (1,576 words) - 14:42, 2 April 2019
• Fluid flow fundamentals
  | chapter = Fundamentals of fluid flow ...focus essentially on two aspects of fluid flow: pressure profile along the flow path and the rate versus pressure relationship at key points of interest (n
  20 KB (3,155 words) - 21:20, 19 January 2022
• Displacement pressure: theory vs. reality
  * [[Saturations required for hydrocarbon flow]] * [[Hydrodynamic flow and pressure transients]]
  4 KB (587 words) - 13:36, 1 April 2022
• Dip-leaking fault
  ...zone. Pressure differences along and across faults can also cause down-dip flow in the area of lowest pressure.<ref name=ch10r43>Knutson, C. A., and R. Erg
  8 KB (1,130 words) - 17:14, 28 March 2022
• Relating traps to paleogeography
  ...and below normal wave base where sedimentation is dominated by [[gravity]]-flow processes. ...ated to their transport through slope channels and deposition as a gravity-flow deposit within the axis of a salt-withdrawal valley (see [[:file:sedimentar
  11 KB (1,482 words) - 15:47, 21 March 2022
• Factors that oppose hydrocarbon migration
  ...en requires significant pressure gradients to overcome the restrictions to flow common in shales. For water, the problem is generally not one of ability to ...differentials interacts with permeability and capillarity to determine the flow rates along multiple [[Hydrocarbon migration|migration]] pathways. Perfect
  8 KB (1,133 words) - 15:16, 14 February 2022
• Reservoir modeling for simulation purposes
  ...[[Fluid flow fundamentals]]). Reservoir heterogeneities influencing fluid flow range from large scale faults and discontinuities down to thin shale interc ...t give a sufficient description of those parameters that control the fluid flow relevant to the planned simulation study.<ref name=pt10r14>Harris, D. G., 1
  17 KB (2,234 words) - 21:21, 19 January 2022
• Factors that cause migration
  * Topographically driven flow ...er-pressuring the pore system within the source-rock unit and resulting in flow from the source-rock unit into the surrounding formations. This factor is o
  6 KB (918 words) - 15:16, 14 February 2022
• Wireline formation testers
  ...t 15 sec, followed by a similar volume flowing into chamber #2 at a higher flow rate. Upon completion of the pretests, a sample can be taken or the tool ca ...In this figure, time is shown as increasing to the right and pressure and flow rate are increasing upward. Initially, and when the tool is being set, the
  10 KB (1,446 words) - 17:42, 18 January 2022
• Economics: key parameters
  ...xample multiwell extension project, given in the article [[Building a cash flow model]], are summarized here in Tables 1 and 2, respectively. ...015,600 USD]]. For the extension project (see Table 3 of [[Building a cash flow model]]), the NPV at 4% = [[cost::2,729,760 USD]].
  19 KB (2,745 words) - 21:18, 19 January 2022
• Karst topography
  ...e valleys or grooves contained in karst land. This valley is formed by the flow of surface water that eroded the rocks in its path. ...ngeln 1942 an underground passageway formed by leaching and erosion by the flow of groundwater or underground Form the rest of dissolution
  13 KB (2,016 words) - 19:56, 5 April 2019
• Carbonate diagenesis
  | chapter = Carbonate reservoir models: facies, diagenesis, and flow characterization ...ductivity of depositional facies. In some cases, [[reservoir quality]] and flow characteristics are totally controlled by diagenesis, as in [[Karst|karsted
  23 KB (3,026 words) - 20:48, 19 January 2022
• Mudlogging: equipment, services, and personnel
  ...osition from the gas trap and blender. This system includes a pressure and flow alarm and purge system to detect vacuum system blockage or leaks. * Safety considerations, such as checking for flow and sudden gas increases
  8 KB (1,031 words) - 15:27, 24 January 2022
• Production problems
  ...essure gradients around the wellbore will not cone in the unwanted fluids. Flow performance calculations or reservoir models can be used to help predict th ...erval or more perforations must be added to expose additional reservoir to flow. [[:file:production-problems_fig2.png|Figure 2]] illustrates the effects of
  16 KB (2,540 words) - 18:41, 20 January 2022
• Sandstone permeability prediction from texture
  ...much. The rougher the surface of the pore, the more difficult for fluid to flow through the pore and the lower the permeability. ...ne reservoirs and its effect on sandstone shaliness, pore space, and fluid flow properties: Proceedings of the SPE Annual Meeting, October 9–12, paper SP
  9 KB (1,118 words) - 17:03, 6 April 2022
• Predicting sandstone reservoir porosity
  ...ng-reservoir-system-quality-and-performance_fig9-55.png|{{figure number|2}}Flow chart to predict the effect of original sediment composition on subsequent ...ng-reservoir-system-quality-and-performance_fig9-56.png|{{figure number|3}}Flow chart to estimate the effects of near-surface diagenesis (depth to point wh
  10 KB (1,384 words) - 15:00, 6 April 2022
• Sea level cycles and carbonate diagenesis
  ...wn-section water movement becomes dominated by conduit flow. The change in flow character is a result of plugging intergranular pores and leaching that wid
  7 KB (960 words) - 21:00, 6 April 2022
• FWhitehurst sandbox
  * gravity flow deposit - See sediment gravity flow * plastic flow http://dictionary.reference.com/browse/plastic+flow
  22 KB (3,024 words) - 21:42, 19 December 2014
• Interpreting hydrocarbon shows
  ...s || Yes || >65 for Ss, >45 for Ls or dolomite || No moveable gas || Short flow period caused by pressure drop near wellbore || Hydrostatic gradient | Flow rate || High in high-permeability rocks || Low
  8 KB (1,130 words) - 17:09, 5 April 2022
• Seismic data interpretation - recurring themes
  ...-D, which introduces [[repeatability]], [[Fundamentals of fluid flow|fluid flow]], and [[difference volume]].
  5 KB (739 words) - 18:51, 27 January 2022
• Hydrocarbon expulsion, migration, and accumulation
  ...ct during the processes of expulsion, [[migration]], [[accumulation]], and flow to a wellbore. Differential pressure (ΔP) in the fluid continuum of the [[ ...on, E. B., S. M. Goolsby, and M. H. Franklin, 1994, Subtle seals and fluid-flow barriers in carbonate rocks, ''in'' J. C. Dolson, M. L. Hendricks, and W. A
  6 KB (828 words) - 16:32, 4 April 2022

View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)