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  • Log analysis: lithology
    ...This article reviews some common techniques that can be used to solve for lithology and porosity. It also addresses some commonly encountered lithologies and t ...eliminate variance due to porosity, resulting in a variance mainly due to lithology.
    25 KB (3,189 words) - 17:24, 18 January 2022
  • Quick-look lithology from logs
    | chapter = Quick-look lithology from logs ! Lithology || Gamma Ray Values (in API units)
    25 KB (3,637 words) - 19:39, 18 January 2022

Page text matches

  • Difficult lithologies
    #REDIRECT [[Log analysis: lithology]]
    37 bytes (4 words) - 17:02, 19 December 2014
  • Seal failure prediction
    ...usive seal leakage]]). The most likely mechanism is controlled by the seal lithology and the geological history. ...tinuity, and charge|Fault leakage]] is a function of fault-fill lithology, lithology of surrounding rocks, and timing. Note these characteristics to evaluate fa
    4 KB (571 words) - 18:06, 1 February 2022
  • Mudlogging: the mudlog
    ===Track 2: cuttings lithology=== Track 2 identifies and records the lithology of the cuttings material that arrives at the surface as drilling takes plac
    5 KB (752 words) - 15:39, 24 January 2022
  • Lithofacies analysis
    ...uttings analysis|cuttings]] from sequences of interest. Besides describing lithology, [[grain size]], and [[sedimentary structures]], also describe [[Pore syste # Calibrate core and cuttings descriptions to [[Quick-look lithology from logs|well logs]] and outcrops. Annotate logs with [[porosity]] and [[p
    2 KB (317 words) - 18:52, 4 February 2022
  • Fractured membrane seal leakage
    ...ick seals are less likely to fail by fracturing than thin seals of similar lithology at the same level of deformation because deformation is less likely to form
    3 KB (478 words) - 17:09, 1 February 2022
  • Geothermal gradient
    ...grees Fahrenheit per 100 feet. Gradients are sensitive to basal heat flow, lithology, circulating groundwater, and the cooling effect of drilling fluids. Worldw
    901 bytes (127 words) - 19:53, 25 June 2015
  • Density-neutron log porosity
    ...nation than using either tool or sonic separately because inferences about lithology and fluid content can be made. ...ctron (P<sub>e</sub>) [[cross section]] curve, an independent indicator of lithology.
    12 KB (1,763 words) - 16:18, 5 April 2022
  • Migration pathway map construction
    ...tential [[Cross-leaking faults#Juxtaposed lithology leak points|juxtaposed lithology leak points (JLLPs)]]
    3 KB (405 words) - 18:19, 29 March 2022
  • Trap leakage
    ...aling lithology. Escape of petroleum up a [[fault]] which cuts the sealing lithology is also leakage. Leakage along faults can occur by the same mechanisms whic
    3 KB (445 words) - 16:58, 1 February 2022
  • Stratigraphic trap
    ...all data types, including [[Seismic interpretation|seismic]], [[Quick-look lithology from logs|well log]], [[Petroleum reservoir fluid properties|fluid characte
    1 KB (176 words) - 12:51, 3 July 2014
  • Cross-leaking fault
    * Juxtaposed lithology leak points (JLLP) ==Juxtaposed lithology leak points==
    8 KB (1,155 words) - 21:31, 24 March 2022
  • Mapping unconformities
    # Map subcrop and supercrop lithology and formations. ..._fig21-36.png|300px|thumb|{{figure number|2}}Subcrop isopach and formation/lithology maps and a cross section whose location is shown on the isopach map.<ref na
    7 KB (977 words) - 20:39, 4 February 2022
  • Rate of penetration
    ===Lithology=== ...es or carbonates, and as a result, ROP logs tend to reflect indirectly the lithology of the formation.
    7 KB (1,049 words) - 19:02, 20 January 2022
  • Well log analysis for reservoir characterization
    | Gamma Ray (GR) || Lithology interpretation, shale volume calculation, calculate clay volume, permeabili | Spontaneous Potential (SP) || Lithology interpretation, Rw and Rwe calculation, detect permeable zone, etc.
    25 KB (3,679 words) - 21:17, 13 March 2019
  • Rock physics analysis for reservoir identification
    ...mmonly carried out to discriminate between the reservoir and non-reservoir lithology, predict the reservoir’s expected seismic response, and to observe the re ...t a depth of 3,000-3,100 ft TVDSS in fluvial depositional environment. The lithology encountered in this interval comprised of two gas-charged sandstone bodies
    15 KB (2,356 words) - 18:00, 26 April 2022
  • Mudlogging: equipment, services, and personnel
    ...ent''—This equipment is used for catching, sieving, preparing, and testing lithology, mineralogy, and oil content in cuttings (Figures 3 and 4). ...gs analysis (including lithology breakdown and observed versus interpreted lithology) (see [[Mudlogging: drill cuttings analysis]])
    8 KB (1,031 words) - 15:27, 24 January 2022
  • Amplitude (seismic)
    ...as strong amplitude with red color amplitude. The change polarity of other lithology to top carbonate commonly from low to high IA, if red reflector is negative
    8 KB (1,291 words) - 15:49, 18 January 2017
  • Formation evaluation of naturally fractured reservoirs
    ...er features such as a rough borehole, shales, and changes in [[porosity]], lithology, and tool centralization might produce amplitude drops that have nothing to ...ool is run through an unfractured section of reasonably constant porosity, lithology, borehole rugosity, and tool centralization , the shades of dark and light
    9 KB (1,380 words) - 17:25, 18 January 2022
  • Geologic mapping (UB)
    [[File:1.jpg|400px|thumbnail|{{figure number|1|}}Lithology of Outcrop and Field Structure Sketch.<ref name=Zakaria>Zakaria, Zulfiadi. #*# Restrict the lithology in accordance with the lithology contacts on the strike and dip map.
    10 KB (1,547 words) - 14:07, 19 March 2019
  • Cased hole tools
    ...alinity are known. The porosity devices are used to estimate porosity when lithology is known. Table 1 lists the types of devices used for these purposes, and T ...the compensated neutron to be used in cased hole to estimate porosity when lithology is known. However, the presence of gas in the formation will cause the comp
    10 KB (1,427 words) - 16:26, 18 January 2022
  • Seismic facies analysis
    ...most useful for calibration with lithofacies interpreted from [[Quick-look lithology from logs|well logs]], [[Core description|cores]], and [[Mudlogging: drill # Estimate lithology using depositional setting interpretation from step 6 and all available dat
    6 KB (809 words) - 17:46, 4 February 2022
  • Predicting preservation and destruction of accumulations
    | Trapping geometry changes so petroleum spills below the sealing lithology. | Lack of integrity of sealing lithology allows petroleum to leak through the seal.
    5 KB (782 words) - 22:36, 31 January 2022
  • Open hole tools
    ...uration. The ''lithology and porosity'' devices are used to determine both lithology and porosity. A variety of ''auxiliary'' tools are used to make special log | rowspan = 3 | Correlation and lithology || Spontaneous potential
    23 KB (3,350 words) - 17:26, 18 January 2022
  • Fault seal analysis for reservoir development
    ...eservoir lithology of one fault block is juxtaposed with the non-reservoir lithology of the opposite fault block. ...The trap and spill point can then be determined from the alignment of the lithology units.]]
    14 KB (2,146 words) - 19:35, 13 September 2022
  • Mudlogging: drill cuttings analysis
    ...supportive information for subsequent [[show evaluation]], correlation of lithology to wireline logs, and other special geological, geophysical, or engineering ...results in (1) a high percentage of cavings that can mask the true drilled lithology, (2) loss of soluble minerals such as [[gypsum]] and salt and some shales,
    10 KB (1,482 words) - 15:25, 24 January 2022
  • Standard interpretation
    ...ty and lithology. (Determination of lithology is discussed in [[Quick-look lithology from logs]].) ...fl</sub> at the depth of interest. The matrix density is determined by the lithology. Normally, sandstone is 2.65 g/cm<sup>3</sup>, [[limestone]] is 2.71 g/cm<s
    25 KB (3,776 words) - 19:53, 18 January 2022
  • Quick-look lithology from logs
    | chapter = Quick-look lithology from logs ! Lithology || Gamma Ray Values (in API units)
    25 KB (3,637 words) - 19:39, 18 January 2022
  • Core description
    ===Lithology=== ...val, lithologies should be logged by estimating the percent volume of each lithology and noting the terrigenous clastic lithologies to the left of the chemical
    13 KB (1,786 words) - 20:50, 19 January 2022
  • Shale gouge ratio
    ...e fault gouge zone. The gouge ratio reflects the proportion of the sealing lithology in the rock interval that has slipped past a given point on the fault. (a)
    3 KB (473 words) - 20:04, 11 March 2015
  • Postaccumulation cementation
    ...reservoir rock may approach that of moderate-quality seals. As a result, a lithology that could seal an accumulation at shallow depth may no longer be effective
    3 KB (430 words) - 15:35, 1 February 2022
  • Seismic interpretation
    ...pulse. This information can often be used to support conclusions about the lithology and fluid content of the seismic reflector being evaluated. ...t determining changes in pore fluid, [[porosity]], [[fracture]] intensity, lithology, and so on from [[seismic data]]. Direct hydrocarbon indicators (DHI, HCIs,
    10 KB (1,520 words) - 18:48, 21 January 2022
  • Paleogeography and prospect identification
    ...l facies such as [[Fossil assemblage|biofacies]], net reservoir thickness (lithology or [[porosity]]), and [[Seismic facies mapping|seismic facies]] (i.e., [[cl
    4 KB (491 words) - 14:27, 21 March 2022
  • Flow units and containers
    ...igure number|3}}Flow unit definition using water saturation, log analysis, lithology, and mean pore throat size (pore size). &copy; Hartmann and Coalson.<ref na ...ado illustrates flow unit definition using water saturation, log analysis, lithology, and mean pore throat size (pore size).
    9 KB (1,231 words) - 18:42, 1 April 2022
  • Fault control on hydrocarbon distribution
    Compartment D is commonly empty because a series of juxtaposed lithology leak points (JLLP) along the western portion of Fault A allows hydrocarbons
    4 KB (515 words) - 21:31, 29 March 2022
  • Depositional trap regime
    ...tion or lithology. Where described, trap styles can be listed based on the lithology or composition of the sealing rocks. The outline below shows the classes an
    10 KB (1,231 words) - 20:28, 4 January 2024
  • Percent fill: controlling factors
    ...(SSP). A [[cross-leaking fault]] limits the percent fill to the juxtaposed lithology leak point (JLLP). A [[dip]]-leaking fault limits the percent fill to the f
    3 KB (471 words) - 21:50, 28 March 2022
  • Seal ductility
    | Lithology || Grain mineralogy and cement type control ductility. Brittle seals includ
    4 KB (510 words) - 15:22, 30 March 2022
  • Seismic data: analyzing individual reflectors
    ...itude. Analysis within specific reflectors can give us clues to changes in lithology or [[porosity]].
    4 KB (481 words) - 18:20, 4 February 2022
  • Geologic mapping (UGM)
    ...formation of the outer layer of earth [[crust]]; they are a variation of [[lithology]], distribution of geologic structure, [[stratigraphy]] and geomorphology. ...elatively homogeneous. While systematic mapping is used when variations of lithology are very complex so observation of some point isn’t enough to represent a
    29 KB (4,733 words) - 15:34, 15 January 2024
  • Paleontology
    ...ts|depositional environment]], [http://www.thefreedictionary.com/lithology lithology], and [[Diagenesis|diagenetic events]]. Knowledge of these factors influenc ===Lithology===
    17 KB (2,331 words) - 20:11, 10 August 2016
  • Main Central Thrust
    ...s have defined the Main Central Thrust by different criteria, including by lithology different between the hanging wall and the footwall, by metamorphic grade c # the lithology and stratigraphy have not been completely investigated and understood<br />
    10 KB (1,434 words) - 15:39, 20 January 2016
  • Overview of routine core analysis
    ...e known as sidewall cores. These samples can provide useful details of the lithology, petrology, porosity, [[permeability]], and hydrocarbon content of the form ...amples. The choice of technique depends on the type of core recovered, its lithology, and the nature of the pore system. Core analysis can be divided into sever
    14 KB (2,121 words) - 21:16, 19 January 2022
  • Full waveform acoustic logging
    ...des. P and S wave traveltimes and amplitudes provide information about the lithology and the fluid content of the formation. Stoneley wave velocity and amplitud ...ring applications. P wave to S wave velocity ratio is a good indicator for lithology, and borehole S wave velocity information is necessary for tie-in with shea
    10 KB (1,530 words) - 20:47, 19 January 2022
  • Tool table
    * [[Quick-look lithology from logs]]
    5 KB (544 words) - 16:27, 18 January 2022
  • Fault seal-conduit studies
    ...d [http://uts.cc.utexas.edu/~rmr/E-rock/gougezone.html gouge] composition, lithology juxtapositions along faults, [[hydrocarbon]] type, and [[reservoir]] pressu
    5 KB (638 words) - 14:17, 2 February 2022
  • Influence of mechanical stratigraphy on deformation styles
    ...t that mechanical stratigraphy is related to lithology, the description of lithology itself does not always reveal the rock mechanical properties (Fig.1). ...profile from Monterey formation show different deformation styles based on lithology variations. Joint patterns appear in brittle formations, while small faults
    23 KB (3,162 words) - 17:28, 5 December 2023
  • Hydrocarbon accumulation: the seven critical elements
    * Lithology of potential seals
    5 KB (636 words) - 21:47, 1 February 2022
  • Reservoir quality
    ...seismic reflection amplitudes to estimates of acoustic impedance. Because lithology, porosity, and fluid saturations affect the acoustic impedance of a rock, a ...ied into three different groups based on the information they provide: (1) lithology indicators—[[Basic open hole tools#Gamma ray|gamma ray]], [[Basic open ho
    18 KB (2,514 words) - 17:47, 21 January 2022
  • Show evaluation
    ...ogs are the most useful wellsite evaluation tool due to the integration of lithology, [[rate of penetration]] (ROP), gas recordings, and oil description (see [[ ...ckground gas || Gas that reflects the geological character of a consistent lithology. Background gas readings incorporate gas contributions due to the formation
    18 KB (2,670 words) - 18:21, 21 January 2022
  • Charge volume
    <sup>* A function of lithology, depth, degree of fracturing, and/or faulting</sup>
    6 KB (834 words) - 20:41, 14 February 2022

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