Search results

• Production testing
  ...ing pressure measurements are converted to bottomhole conditions and a log-log plot of <math>\bar{p}^{2} - p_{\rm wf}^{2}</math> versus flow rate, ''q'', ...{n}} \mbox{ versus } \frac{1}{q_{n}} \sum\limits_{j=0}^{n-1} \Delta q_{j} \log (t_{n} - t_{j})</math>
  14 KB (2,165 words) - 18:42, 20 January 2022
• Two-dimensional geophysical workstation interpretation: generic problems and solutions
  ...n help to identify seismic reflections representing geological interfaces. Log models can also be converted to 2-D synthetic seismic models by integrating ...solutions_fig3.png|Figure 3]]). When concatenated to a well, the wellbore, log curves, and geological tops can be displayed with the seismic. A three-dime
  20 KB (2,848 words) - 14:29, 20 January 2022
• Lithofacies maps
  ...name=Hamiltonetal_2002 />). SP = spontaneous potential log; GR = gamma-ray log.]] ...ar complexes, whereas multiple, thin serrated and subtly upward-coarsening log facies are interpreted as strand plain complexes flanking the delta front.
  21 KB (3,139 words) - 16:54, 6 April 2016
• Open hole tools
  basic-open-hole-tools_fig1.png|{{figure number|1}}A typical log showing SP, gamma ray, dual Induction, and sonic measurements. &copy; Schlu basic-open-hole-tools_fig2.png|{{figure number|2}}A typical log showing density, compensated neutron, Pe, gamma ray, and caliper measuremen
  23 KB (3,350 words) - 17:26, 18 January 2022
• Reservoir engineering
  ...m conventional core analysis or by the approach through equations based on log analysis. Empirical equation that can be used is : ...g [ \log(\mu_{OD} + 1)] = 1.8653 - 0.025086(^{\circ} \text{API}) - 0.5644 \log{T}</math>
  14 KB (2,122 words) - 17:33, 7 March 2016
• Procedure for basin-fill analysis
  ...rom seismic sections with sequence stratigraphic interpretations from well log [[cross section]]s.
  5 KB (599 words) - 18:54, 4 February 2022
• Reservoir quality
  ...ives.datapages.com/data/alt-browse/aapg-special-volumes/me3.htm Basic well log analysis for geologists]: AAPG Methods in Exploration Series 3, 216 p.</ref ...tative indicator of the permeability of a formation. (For more on wireline log response to reservoir properties, see [[Quick-look lithology from logs]].)
  18 KB (2,514 words) - 17:47, 21 January 2022
• Lithofacies and environmental analysis of clastic depositional systems
  | [[Dipmeter]] log | [[Formation MicroScanner]] (FMS) log
  38 KB (5,198 words) - 22:11, 15 January 2024
• Reserves estimation
  * ''h'' = height or thickness of pay zone (ft) from log and/or [[Overview of routine core analysis|core data]] * ø = [[porosity]] (decimal) from log and/or core data
  16 KB (2,550 words) - 17:47, 21 January 2022
• Log analysis: lithology
  ...ome commonly encountered lithologies and their characteristics relative to log responses. * Analysis of log responses
  25 KB (3,189 words) - 17:24, 18 January 2022
• Fault-dependent leak points, continuity, and charge
  ...r68>Shea, W. T., J. R. Schwalbach, and D. M. Allard, 1993, Integrated rock-log evaluation of fluvio-lacustrine seals, in J. Ebanks, J. Kaldi, and C. Vavra
  4 KB (556 words) - 20:56, 31 March 2022
• Pore system shapes
  ...ration (S_w) of rocks with Archie porosity can be predicted from log analysis using the [[Archie equation]]
  4 KB (528 words) - 13:53, 4 April 2022
• Data: sources
  * wireline-log and logging-while-drilling (LWD) data * production-log data
  43 KB (6,686 words) - 13:44, 18 March 2019
• Molyneux:sandbox
  * [[Spontaneous potential log]]
  5 KB (543 words) - 23:45, 8 January 2015
• Flow units for reservoir characterization
  ...on the wireline log suite available in a particular reservoir. (See [[Core-log transformations and porosity-permeability relationships]].) ...lable, cuttings, sidewall cores, patterns of textural change inferred from log signatures, cementation or shales detected on logs, downhole images of the
  16 KB (2,282 words) - 20:46, 19 January 2022
• Overview of routine core analysis
  ...3–90.</ref> Data from continuous core are typically combined with wireline log and formation test data to evaluate productivity. Diagenetically altered sa ...Oil, v. 201, p. 29–36.</ref> The analytical results can be used to verify log analysis calculations. Selection of sidewall core points after logging allo
  14 KB (2,121 words) - 21:16, 19 January 2022
• Pressure detection
  :<math>d \mbox{ exponent} = \frac{\log \displaystyle\frac{R}{60N}}{\log \displaystyle\frac{12W}{10^{6}D}}</math> ...l subsurface pressures measured from conductivity or resistivity logs: The Log Analyst, v. 6, p. 26-38.</ref>
  16 KB (2,450 words) - 21:42, 20 January 2022
• Reservoir modeling for simulation purposes
  ...ck typing for each environment of deposition to estimate permeability from log derived [[porosity]] and estimation of vertical permeability ...ery difficult to determine large scale vertical permeability from core and log data.
  17 KB (2,234 words) - 21:21, 19 January 2022
• Systems tracts identification
  ...-basin-analysis_fig4-22.png|{{figure number|3}}Interpretation template for log motif analysis. From Armentrout et al.;<ref name=ch04r8 /> courtesy The Geo ..., p. 1–7.</ref><ref name=ch04r101>Vail, P. R., Wornardt, W. W., 1990, Well log seismic stratigraphy: a new tool for exploration in the '90s: Proceedings,
  15 KB (2,029 words) - 21:21, 23 February 2022
• Drill stem testing
  ...will have a unit slope. As these effects diminish, data points on the log-log plot fall below the unit slope line and approach the slowly curving line fo ...see [[:file:drill-stem-testing_fig9.png|Figure 9]]). Now plot ''P'' versus log[(''t'' + Δ''t'')/Δ''t''] for buildup #1 (the first buildup following the
  26 KB (4,009 words) - 15:09, 24 January 2022
• Hydrocarbon accumulation: the seven critical elements
  * Electric log responses
  5 KB (636 words) - 21:47, 1 February 2022
• Fault seal analysis example: Gulf Coast
  ...djacent well logs to fit the stratigraphic cutoffs on the FPR The detailed log stratigraphy is necessary for reliably calculating SGR. The rubber-banding
  5 KB (769 words) - 18:12, 29 March 2022
• Utilization of the industrial revolution 4.0 in oil and gas exploration
  ====Well log Correlation==== ....<ref name=Miahetal_2020>Miah, M. I., Zendehboudi, S., & Ahmed, S. (2020). Log data-driven model and feature ranking for water saturation prediction using
  21 KB (3,096 words) - 20:59, 21 April 2022
• Carbonate diagenesis
  ...les. The descriptions are correlated with [[Basic open hole tools|wireline log]] responses and incorporated into geological facies and/or diagenetic model ===Relationships between rock fabric and wireline log response===
  23 KB (3,026 words) - 20:48, 19 January 2022
• Rock physics analysis for reservoir identification
  ...A (clean sandstone) and Sand B (clayey sandstone as indicated by gamma ray log) have different density and wave velocities compared to the claystones, eve ...WikiWriteOff2021-Muamamr-Figure1.png|framed|center|{{Figure number|1}}Well log section showing the difference of rock physics properties between clean san
  15 KB (2,356 words) - 18:00, 26 April 2022
• Subsurface maps
  ...(For details of construction of fault plane maps, see [[Conversion of well log data to subsurface stratigraphic and structural information]].) ...hickness is critical in these and other analyses (see [[Conversion of well log data to subsurface stratigraphic and structural information]]).
  22 KB (3,076 words) - 13:56, 24 January 2022
• Pressure prediction: analysis of cuttings
  * [[Pressure prediction: analysis of well-log and seismic data]]
  5 KB (818 words) - 17:56, 17 February 2022
• Types of wells
  ...eep the well path within the target. This can involve the use of real-time log data but may also include input while drilling from well-site biostratigrap ...hnology, SPE 29242, v. 46, no. 10, p. 848–852.</ref> A catalog of expected log responses, as they would appear in a horizontal trajectory, can be created
  22 KB (3,567 words) - 17:20, 11 March 2019
• Fractured reservoir evaluation
  ...ictions from standard [[Core description|core]] or [[Basic open hole tools|log analyses]] do not match reservoir performance ...luding their associated well logs) and relevant outcrops. Cores and [[Core-log transformations and porosity-permeability relationships|core-calibrated wel
  26 KB (3,674 words) - 21:21, 19 January 2022
• Amplitude versus offset (AVO) analysis
  ...ase information upon which to judge and interpret the AVO study using well log data in the vicinity of an exploration target.
  12 KB (1,723 words) - 18:41, 20 January 2022
• Biostratigraphy in sequence stratigraphy
  ...integrated with [[Seismic data|seismic]] and [[Basic open hole tools|well log data]], are an integral part of sequence stratigraphic analysis. [[Paleonto ...e than [[Seismic data|seismic reflectors]] or [[Basic open hole tools|well log]] picks. Correlation across [[growth fault]]s, where stratal thickness and
  16 KB (2,247 words) - 19:23, 24 January 2022
• Well types
  ...eep the well path within the target. This can involve the use of real-time log data but may also include input while drilling from well-site [[Biostratigr ...Technology, SPE 29242, v. 46, no. 1, p. 3-12.</ref> A catalog of expected log responses, as they would appear in a horizontal trajectory, can be created
  24 KB (3,753 words) - 19:33, 3 March 2016
• Seal capacity of different rock types
  ...68>Shea, W., T., Schwalbach, J., R., Allard, D., M., 1993, Integrated rock-log evaluation of fluvio-lacustrine seals, in Ebanks, J., Kaldi, J., Vavra, C.,
  5 KB (760 words) - 20:55, 31 March 2022
• Yowlumne field
  file:mth14ch02f03.jpg|{{figure number|3}}Type log for Yowlumne field with reservoir statistics and rock properties of the Yow Well-log correlations and 3-D seismic data indicate downlap within the fan, with bas
  13 KB (1,896 words) - 19:02, 11 March 2019
• Scientific method: application to exploration
  ...ebster.com/dictionary/outcrop outcrop], [[Seismic data|seismic]], and well log data
  6 KB (808 words) - 15:30, 18 February 2022
• Diagenetically complex reservoir evaluation
  ===Step 3. Lithology-log response analysis=== ...or the objectives of the study, so the geologist must attempt to correlate log response with lithological data from intervals containing full diameter or
  31 KB (4,171 words) - 18:22, 21 January 2022
• Definitions of depositional system elements
  ...The GOM basin analysis example in this chapter is based primarily on well log and [[seismic data]] interpretation using this passive margin sequence stra
  7 KB (901 words) - 20:45, 22 February 2022
• Mancos Shale Play in New Mexico
  ...e than 70 years. [[:file:Figure1MancosCommRept.jpg|Figure 1]] shows a type log through the Cretaceous section of the San Juan Basin.
  6 KB (985 words) - 20:14, 2 June 2021
• Relationship between porosity and permeability on fractured basement reservoir
  ...rom the formation, include permeability distribution, can be achieved from log data of a well without core. But, in carbonaceous rock formation, where unc ...ohm- m. The average porosity of the reservoir (17%) obtained from neutron log. Mud loss is thought to occur when drilling these wells. Analysis of the pr
  29 KB (4,601 words) - 16:09, 12 April 2016
• Top seal ductility estimation
  ...uctility of a top seal]] can be estimated (1) by using laboratory data and log-derived density values that reflect the compaction state or (2) by comparin
  7 KB (1,000 words) - 15:22, 30 March 2022
• Electrical methods
  ...vities measured by well logs and those measured by electrical methods, the log is used to investigate properties only in the immediate vicinity of the wel
  15 KB (2,130 words) - 21:19, 19 January 2022
• Static gas pressure gradient estimation
  ...opyright: Gearhart-Owens.<ref name=G-O>Gearhart-Owens Industries, 1972, GO Log Interpretation Reference Data Handbook:
  7 KB (979 words) - 15:24, 17 February 2022
• Cross-well electromagnetic tomography monitoring of fluid distribution
  ...istivity log, which is a plot of resistivity versus depth. The resistivity log reflects the nature of hydrocarbon presence in the penetrated formation. Th ...e borehole, the logged information is between an interval of depths, so to log the data, multiple receivers stay at a separated interval while the transmi
  18 KB (2,715 words) - 18:29, 8 February 2024
• Dipmeter
  ...evaluation of high resolution dipmeter data: Society of Professional Well Log Analysts' 25th Annual Logging Symposium, vol. 2, paper YY, 24 p. ...p://store.aapg.org/detail.aspx?id=832 Consider Dipmeter and Borehole Image Log Technology-AAPG Memoir 92]
  14 KB (2,128 words) - 17:25, 18 January 2022
• Drilling a well
  ...a well site geologist present at the rig site who will draw up a lithology log from examination of the cuttings. The objective is to analyze the lithostra ...ervoir lithologies and fluids based on an analysis of the various types of log response. For instance, some wireline logs will allow the porosity of the r
  15 KB (2,385 words) - 15:05, 1 August 2016
• Sorrento field: water saturation
  ...the reservoir is somewhat shaly. However, ''n'' was assumed equal to 2 for log calculations because the lab data were not far from that value and because
  7 KB (1,044 words) - 16:57, 13 April 2022
• Deep-water marine reservoirs
  ...esponse in the channel axis, with lower net-to-gross values and a serrated log response toward the margins ([[:File:M91FG193.JPG|Figure 1]]). In core, cha
  20 KB (2,850 words) - 15:33, 15 January 2024
• Rate of penetration
  The ROP log is the first source of data that can be used to correlate to nearby wells.
  7 KB (1,049 words) - 19:02, 20 January 2022
• Geological heterogeneities
  ...sed during coring). The use of [[Quick-look lithology from logs#Log shapes|log shapes]] for facies recognition, as well as [[Sidewall coring|sidewall samp
  17 KB (2,232 words) - 21:22, 19 January 2022
• East Breaks hydrocarbon accumulation model
  ...rofile across the East Breaks 160-161 field, showing the 160 No. 1 well SP log and [[synthetic seismogram]] and two schematic diagrams for interpreting po
  8 KB (1,015 words) - 16:59, 23 March 2022
• Ti in zircon geothermometer
  [[File:Log(Ti) vs T graph.jpeg|thumbnail|right|Plot of Ti abundance (log of Ti ppm) versus Temperature in Celsius. Simplified version, modified from
  16 KB (2,328 words) - 22:11, 3 December 2015
• Mudlogging: equipment, services, and personnel
  ...oduction equipment''—A typewriter, plotter, and copy system are needed for log reproduction.
  8 KB (1,031 words) - 15:27, 24 January 2022
• Fluid flow fundamentals
  ...wells. Values of ''n'' and ''c'' can be determined graphically from a log-log plot of multiple rate test data in the form of (''p''_R<sup>2</su
  20 KB (3,155 words) - 21:20, 19 January 2022
• Delta plain, lower
  ...rd sequence (or inverted bell-shaped logs) becomes the most common type of log response. Within the overall sand body there are areas where sands have not ...is an extremely complex process, and in many areas is simply an accident. Log jams, loss of gradient advantage, infilling during a catastrophic period (s
  27 KB (4,229 words) - 16:41, 6 April 2016
• Condensate banking effect
  [[file:AlAhmadiTawfiqFigure9.jpg|thumb|300px|{{figure number|9}}Log-log plot of a well in two regions with varying mobility ratios.<ref name=Houzee
  21 KB (3,040 words) - 15:22, 12 December 2022
• Porosity
  ...analysis|cores]]. The [[Basic open hole tools#Compensated neutron|neutron log]], however, would enlarge the definition to include structural hydroxyl che * [[Core-log transformations and porosity-permeability relationships]]
  24 KB (3,450 words) - 19:09, 20 January 2022
• Depositional sequence analysis of plays
  # Using seismic lines and/or log [[cross section]]s, determine the systems tract type for intervals of inter
  8 KB (1,184 words) - 20:44, 4 February 2022
• Waterflooding
  ...r each permeability. From a plot of ''k'' versus percent greater than on a log probability graph sheet (as shown in [[:file:waterflooding_fig2.png|Figure
  10 KB (1,468 words) - 18:23, 21 January 2022
• Delta plain, upper
  ...ntative electric logs (lower right) at selected sites to show variation in log shape. As this diagram illustrates, the typical vertical sequence is charac ...fined on the logs. Although distinctive cycles can often be discerned from log data, it is very likely that individual units cannot be carried laterally a
  33 KB (4,905 words) - 16:40, 6 April 2016
• Basin modeling: identifying and quantifying significant uncertainties
  ...imple distributions such as uniform (rectangular), triangular, normal, and log normal are commonly used, but any distribution can be used as long as it ho ...nado chart ([[:file:H4CH12FG6.JPG|Figure 6]]). The yields are plotted on a log scale to more clearly examine the low-yield (high-risk) cases. Analysis of
  38 KB (5,890 words) - 15:16, 23 August 2016
• Mudstones
  ...igraphic study of mudstone heterogeneity: A combined petrographic wireline log investigation of Upper Jurassic mudstones from the North Sea (UK), in M. Lo
  16 KB (2,352 words) - 18:46, 4 December 2023
• Permeability
  ...r 2–5, SPE 18167.</ref> (For more on porosity, see [[Porosity]] and [[Core-log transformations and porosity-permeability relationships]].) * [[Core-log transformations and porosity-permeability relationships]]
  19 KB (2,716 words) - 19:02, 20 January 2022
• Checkshots and vertical seismic profiles
  ...al, and J. Bowles, 1979, An investigation into discrepancies between sonic log and seismic check-shot velocities: Australian Exploration Association Journ
  11 KB (1,599 words) - 20:48, 19 January 2022
• FWhitehurst sandbox
  * density (but not density log) http://physics.about.com/od/fluidmechanics/f/density.htm
  22 KB (3,024 words) - 21:42, 19 December 2014
• Mudlogging: drill cuttings analysis
  * Verification of wireline log response
  10 KB (1,482 words) - 15:25, 24 January 2022
• Identifying depositional sequences in seismic sections
  ...seismic sequences with sequences identified from biostratigraphic and well log data to see if they make geologic sense. Identifying depositional sequences
  10 KB (1,394 words) - 21:47, 22 February 2022
• Austin Chalk, onshore U.S. Gulf Coast
  ...the Austin Chalk Group in subsurface. Loucks et al. (2020a) performed core-log calibration and defined basic lithofacies based on a type core in south Tex
  8 KB (1,200 words) - 21:22, 3 March 2022
• Borehole imaging devices
  ...-1987-v28n3a4 Formation imaging with microelectrical scanning arrays]: The Log Analyst, v. 28, p. 294–306.</ref>
  10 KB (1,313 words) - 16:24, 18 January 2022
• Basin-centered gas systems: evaluation and exploration strategies
  ...ing, more than 400 open fractures were detected on a Formation MicroImager log from a 1750 ft (533 m)-long horizontally drilled leg in the Upper Cretaceou ...ng tools, such as levels of thermal maturity, present-day temperature, and log responses, may be determined. Examples of such analog studies include the P
  34 KB (5,070 words) - 15:11, 23 August 2016
• Paleoenvironmental analysis
  ...with interpretations based on other data sources (e.g., sedimentology well log analysis, seismic) and plotted on wells or [[cross section]]s.
  10 KB (1,252 words) - 19:55, 31 January 2022
• Thin section analysis
  ...s [[porosity]] and [[permeability]]), and [[Basic open hole tools|wireline log]] responses. They are also better because sample damage tends to be minimal ...s are less desirable because sampling sites are remotely selected based on log responses and because sample size is small. This introduces the possibility
  24 KB (3,264 words) - 15:09, 24 January 2022
• Sandstone
  :<math>\phi = -\log 2d</math>
  10 KB (1,508 words) - 15:44, 22 March 2019
• Identifying sea level cycle phase with biostratigraphy
  ...basin-analysis_fig4-31.png|Figure 1]] is a spontaneous potential (SP) well log illustrating the subdivision of the ''Glob alt'' depositional cycle into th
  11 KB (1,548 words) - 16:58, 24 February 2022
• Seismic data - mapping with two-dimensional data
  ...c logs and show the cumulative travel time through the rocks where a sonic log was run. Knowing the cumulative travel time for a given depth, one can calc
  13 KB (1,936 words) - 21:29, 21 January 2022
• Vaca Muerta, La Luna Shale, South America
  ...ears, seismic imaging and mapping, as well as petrophysical evaluation and log correlation, has focused upon the intervals observed within the Vaca Muerta
  11 KB (1,644 words) - 16:14, 11 May 2023
• Prudhoe Bay field
  file:Mth14ch07f02.jpg|{{figure number|2}}Prudhoe Bay type log depicting formal stratigraphic nomenclature and informal, operationally bas
  11 KB (1,634 words) - 16:34, 26 April 2016
• Meandering fluvial reservoirs
  ...tive. They consider that only limited inferences can be made from core and log data as to the overall geometry of a fluvial reservoir in the subsurface (e ...on the gamma-ray log. Caution should be taken where a shale-like wireline log response is seen within thick multistory fluvial sandstones.
  32 KB (4,727 words) - 21:03, 15 January 2024
• Dolomite and dolomitization: Implications for reservoir characterization
  ...physical logs (gamma ray, density, sonic etc; Fig. 15). The Gamma ray (GR) log response of dolostone / dolomite-rich carbonates can be lower than the shal Usually GR log is used to demarcate shale and non-shale (limestone, dolostone) lithology.
  38 KB (4,996 words) - 21:07, 21 April 2022
• Shale-oil resource systems
  A geochemical log of this well demonstrates oil crossover in the 1371.6 to 1417.3 m (4500–4 ...3/day (516 bbl/day) and 2.20 times 104 m3/day (778 mcf/day). A geochemical log of this well illustrates its much higher thermal maturity, explaining the h
  97 KB (14,873 words) - 19:53, 11 January 2024
• Wattenberg field
  ...ckness from 100 to 140 ft in mapped area. Contour interval 20 ft. (B) Well log illustrating Plainview/Lytle section and perforated interval. Initial produ file:M125-WattenbergField-Figure10.jpg|{{Figure number|10}}Type log for Wattenberg Field. Curves shown are gamma ray, spontaneous potential, re
  72 KB (10,249 words) - 20:06, 15 January 2024
• Biostratigraphic applications in hydrocarbon exploration
  ...of wellsite biostratigraphy in integration with lithological description, log correlation and seismic interpretations is greatly used in the drilling ope
  14 KB (1,899 words) - 21:03, 21 April 2022
• Delta plain, subaqueous
  ...show very erratic sand distribution in the distributary channel. Electric-log responses and their variations are shown in the lower right-hand diagram of ...ated into the linear type of ridges seen topographically in modern deltas. Log response (lower right diagram, [[:file:M31F22.jpg|Figure 7]]) displays extr
  60 KB (9,022 words) - 17:17, 21 March 2016
• Statistics overview
  ...in the scale of measurement. [[Basic open hole tools#Gamma ray|Gamma ray]] log values, the porosity or permeability of a rock, or the subsea elevation of
  16 KB (2,483 words) - 19:28, 19 January 2022
• Fluid contacts
  ...e hydrocarbons might be interpreted as part of a transition zone from well log or [[Overview of routine core analysis#Residual fluid saturation|core analy
  19 KB (2,690 words) - 21:20, 19 January 2022
• Kingfisher field
  ...ation of maximum flooding surface [[shale]]s from biostratigraphy and well log data sets. Based on the Shell stratigraphic scheme, the Brae sandstone memb
  16 KB (2,358 words) - 16:28, 11 January 2024
• Subsurface diagenesis and its relation with diagenetic trap on carbonate rocks reservoir
  ...osity and permeability in light rocks (Dawson, 1988). Seismic and wireline log data can’t distinguish cementation, compaction, recrystallization, dissol
  16 KB (2,395 words) - 21:18, 9 January 2024
• Paleontology
  ...s, and [[Thin section analysis|thin sections]] complement petrographic and log analyses and aid in the recognition of reservoir quality rocks.
  17 KB (2,331 words) - 20:11, 10 August 2016
• Mudstone nomenclature
  * They provide a tie to well-log and seismic data. ...s are linked to rock properties of economic interest, provide ties to well-log and seismic data, reveal depositional conditions, and highlight long-term a
  58 KB (8,391 words) - 19:46, 20 February 2024
• Rock-water reaction
  * [[Core-log transformations and porosity-permeability relationships]]
  17 KB (2,356 words) - 19:24, 19 January 2022
• Deltaic reservoirs
  ...various types of delta can often be recognized on isochore, net-sand, and log-facies maps.<ref name=Colemanandwright_1975>Coleman, J. M., and L. D. Wrigh [[file:M91FG187.JPG|thumb|300px|{{figure number|6}}Idealized log and permeability profiles for deltaic sand bodies (from Sneider et al.<ref
  34 KB (4,776 words) - 18:18, 5 January 2024
• Rock-water reaction: formation damage
  * [[Core-log transformations and porosity-permeability relationships]]
  17 KB (2,380 words) - 18:23, 21 January 2022
• West Texas Super Basin
  ...Udden<ref name=Uddn1915 />, obtained as many drillers (mostly water well) log descriptions as possible and made isopach maps of those red beds ([[:file:M ...on the southern half of cross section A-A’. (C) Gamma Ray–Density-Neutron log across the Wolfcamp C showing a representative sandstone, 9’ thick, 14% a
  157 KB (23,278 words) - 18:36, 16 January 2024
• Siliciclastic shorelines and barrier island reservoirs
  M91Ch6FG42.JPG|{{figure number|4}}Example of a sedimentological core log, Well d-2-C/94a-16, Peejay field, Canada (after Caplan and Moslow).<ref>Cap
  18 KB (2,607 words) - 15:33, 15 January 2024
• Influence of mechanical stratigraphy on deformation styles
  The petrophysical log has been studied for Peak Tavis Formation where fractures are a direct resu
  23 KB (3,162 words) - 17:28, 5 December 2023
• Capillary pressure
  * [[Core-log transformations and porosity-permeability relationships]]
  23 KB (3,315 words) - 16:59, 19 January 2022
• Appalachian Basin Marcellus gas play
  ...elation between the organic content of Appalachian shales and the wireline log gamma-ray intensity. Significant TOC content (5%) can be identified with ga [[File:M97Ch4FG11.jpg|400px|thumb|{{figure number|11}}A typical gamma-ray log of the Marcellus Shale interval in southwestern Pennsylvania with selected
  89 KB (13,415 words) - 19:16, 16 January 2024
• Contouring geological data with a computer
  * [[Log analysis applications]]
  25 KB (3,597 words) - 20:49, 19 January 2022
• Faults: structural geology
  ...ter whereas the production geologist analyzes the structures from core and log data. Having established a fault framework for a field, it is important to ..., p. 71–86.</ref> A sharp change in dip amplitude or azimuth on a dipmeter log can indicate that a fault is present. Drag patterns may also be seen on the
  63 KB (9,496 words) - 16:51, 15 January 2024
• Basin-centered gas systems: global distribution
  ...http://archives.datapages.com/data/specpubs/memoir61/ch22/0333.htm A sonic log study of abnormally pressured zones in the Powder River basin of Wyoming],
  27 KB (3,753 words) - 14:53, 12 March 2019
• Basin-centered gas systems: development
  ...http://archives.datapages.com/data/specpubs/memoir61/ch22/0333.htm A sonic log study of abnormally pressured zones in the Powder River basin of Wyoming],
  34 KB (4,772 words) - 14:44, 12 March 2019

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