User contributions
14 January 2014
File:Uncertainties-impacting-reserves-revenue-and-costs fig2.png
Worksheet showing graphical method of combining distributions to derive the mean reserves on three-cycle log probability paper. Category:Economics and risk asseement
File:Uncertainties-impacting-reserves-revenue-and-costs fig1.png
Location of mode, median, and mean shown schematically on a lognormal frequency distribution. Category:Economics and risk asseement
Drilling problems
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File:Measurement-while-drilling fig3.png
Composite lithological log from MWD data. (From Schlumberger, 1989.) Category:Wellsite methods
File:Measurement-while-drilling fig2.png
Hardcopy plot of MWD data. (From Anadrill, 1988.) Category:Wellsite methods
File:Measurement-while-drilling fig1.png
Location of MWD hardware (not drawn to scale). (From Anadrill, 1988.) Category:Wellsite methods
Measurement while drilling
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Drilling fluid
Initial import
File:Displaying-seismic-data fig1.png
{{copyright|Conoco Inc}} Various types of seismic displays: (a) wiggle trace, (b) variable area, (c) variable area wiggle trace, and (d) variable density. Copyright: Conoco Inc. Category:Geophysical methods
Seismic data display
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File:Dipmeters fig7.png
Field example of a detailed dip computation through a sequence of interrupted meandering stream point bars. Category:Wireline methods
File:Dipmeters fig6.png
Model of a tilted plunging anticline as it would appear on an arrow plot. Category:Wireline methods
File:Dipmeters fig5.png
Simple dip model for the description of a normal fault with drag. Category:Wireline methods
File:Dipmeters fig4.png
Dip data expressed on a standard arrow plot. Category:Wireline methods
File:Dipmeters fig3.png
Example of thin bed laminated sandstone-shale resolution by means of a dipmeter correlation curve. Category:Wireline methods
File:Dipmeters fig2.png
Expanded scale recording of raw dipmeter data from a six-arm tool. Category:Wireline methods
File:Dipmeters fig1.png
Sketch of a four-arm dipmeter tool illustrating pertinent orientation measurements. Category:Wireline methods
Dipmeter
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File:Difficult-lithologies fig3.png
{{copyright|Schlumberger Educational Services, 1989}} MID plot for mineral identification. Copyright: Schlumberger Educational Services, 1989. Category:Wireline methods
File:Difficult-lithologies fig2.png
{{copyright|Schlumberger Educational Services, 1989}} UMAA determination chart. Copyright: Schlumberger Educational Services, 1989. Category:Wireline methods
File:Difficult-lithologies fig1.png
{{copyright|Schlumberger Well Services, 1979}} M-N crossplot for mineral identification. Copyright: Schlumberger Well Services, 1979. Category:Wireline methods
Log analysis: lithology
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File:Multivariate-data-analysis fig2.png
Dendrogram (by aggregation). Starting from <italic>n</italic> samples, combine the two most similar samples (here 2 and 3). Then, combine the two nearest groups by either joining two samples or aggregating a third sample to the previous group of two (1...
File:Multivariate-data-analysis fig1.png
Plot of two-blvariate distributions, showing overlap between groups A and B along both variables <italic>x</italic><sub>1</sub> and <italic>x</italic><sub>2</sub>. Groups can be distinguished by protecting members of the two groups onto the discriminan...
File:Cross-borehole-tomography-in-development-geology fig3.png
Time lapse tomograms acquired at 6 month intervals across a thermal EOR project. (After Justice et al., 1989.) Category:Geophysical methods
File:Cross-borehole-tomography-in-development-geology fig2.png
Ray path diagram documenting the distribution of ray paths across a thermal EOR project tomogram. Category:Geophysical methods
File:Cross-borehole-tomography-in-development-geology fig1.png
Schematic illustration of tomographic data acquisition. Category:Geophysical methods
Cross-borehole tomography
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13 January 2014
File:Sidewall-coring fig3.png
{{copyright|Foothills Diamond Coring, Calgary, Canada}} Process of Sidetrak Coring System®. Copyright: Foothills Diamond Coring, Calgary, Canada. Category:Wellsite methods
File:Sidewall-coring fig2.png
{{copyright|Halliburton Logging Services, Inc}} Rotary sidewall coring tool. Copyright: Halliburton Logging Services, Inc. Category:Wellsite methods
File:Sidewall-coring fig1.png
{{copyright|Halliburton Logging Services, Inc}} Percussion sidewall coring system. Copyright: Halliburton Logging Services, Inc. Category:Wellsite methods
Sidewall coring
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File:Overview-of-routine-core-analysis fig3.png
Data compiled from 5300 sidewall core samples indicate that sidewall cores from low permeability formations have an indicated permeability greater than that determined from conventional core analysis. Sidewall cores from formations with more than 20 md...
File:Overview-of-routine-core-analysis fig2.png
Comparison of saturation data (Jenkins, 1987) indicate that sidewall cores from gas condensate zones may have measured oil saturation values that are 2% higher than conventional core samples. In oil zones the relationship is less clear. The agreement b...
File:Overview-of-routine-core-analysis fig1.png
Comparison of water saturation data (Jenkins, 1987) from sidewall and conventional cores shows that sidewall core values are almost always higher than conventional core values. Sample values from gas condensate zones are 10 to 15% higher, while values ...
Overview of routine core analysis
Initial import
File:Core-orientation fig3.png
Paleomagnetic plug sample. Category:Wellsite methods
File:Core-orientation fig2.png
Scribe knife arrangement. Category:Wellsite methods
File:Core-orientation fig1.png
Typical assembly for mechanically orienting core. Category:Wellsite methods
Core orientation
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Core handling
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File:Core-description fig2.png
(a) Comparison chart for sorting and sorting classes. (Modified from Pettijohn et al. 1987.) (b) Comparison chart for roundness and sphericity. (Modified from Powers, 1953.) Category:Laboratory methods
File:Core-description fig1.png
Idealized graphic log. Explanation for some symbols used for sedimentary structures, lithologies, fossils, and contacts are given. Grain size of sillclclastic rocks and Dunham's (1962) classification of limestones are indicated in the column on the lef...
Core description
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File:Core-alteration-and-preservation fig1.png
{{copyright|reservoir to surface. (a)Oil-productive formation. (b) Gas-productive formation. (Courtesy of Core Laboratories, a Division of Western Atlas International}} Typical fluid contents. Copyright: reservoir to surface. (a)Oil-productive formati...
File:Conventional-coring fig3.png
Full-closure core catcher. (From Whitebay, 1986.) Category:Wellsite methods
File:Conventional-coring fig2.png
{{copyright|DBS, a Baroid Company}} Sponge-lined coring system. Copyright: DBS, a Baroid Company. Category:Wellsite methods
File:Conventional-coring fig1.png
{{copyright|Eastman Christensen, Technical Data Sheet C-105}} Conventional core barrel. Copyright: Eastman Christensen, Technical Data Sheet C-105. Category:Wellsite methods
Conventional coring
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File:Using-and-improving-surface-models-built-by-computer fig24.png
Incomplete data for net and porosity due to partial penetrations, truncations, baselaps, and so on create problems when building models of these and related variables. Category:Integrated computer methods