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- #REDIRECT [[Log interpretation: initial quick scan]]52 bytes (6 words) - 13:43, 12 August 2014
- 236 bytes (31 words) - 19:53, 18 November 2014
- 306 bytes (36 words) - 19:50, 18 November 2014
- ...ome commonly encountered lithologies and their characteristics relative to log responses. * Analysis of log responses25 KB (3,189 words) - 17:24, 18 January 2022
- | chapter = Log analysis applications ...wers to geological questions. This article briefly summarizes computerized log analysis packages (LAPs) by reviewing basic features and emphasizing the fu21 KB (3,142 words) - 16:20, 20 January 2022
- ...es in Geology No. 27], p. 2.</ref> outlines a suggested procedure for well log sequence analysis. ...depositional lithofacies on logs using cores and cuttings to calibrate the log.6 KB (845 words) - 16:53, 4 February 2022
- ==Density log== The [[Basic open hole tools#Density|density log]] measures the electron density of a formation. The logging device is a con12 KB (1,763 words) - 16:18, 5 April 2022
- ...scontinuities are identified as objectively as possible on the seismic and log sections before they are tied together using the [[synthetic seismogram]].< ...ation]]s should be tied together by generating a synthetic seismogram from log information. There are two primary objectives to this step:<ref name=ch21r45 KB (746 words) - 16:54, 4 February 2022
- | title = Basic Well Log Analysis, 2nd Edition | chapter = Log Interpretation4 KB (543 words) - 14:11, 21 August 2014
- ...thers. Some approaches are needed to characterize reservoir, by using well log data, the user may be able to calculate: ...ror. Figure 1 shows the steps for reservoir characterization by using well log data. Basically, there are two types of properties that will be used in res25 KB (3,679 words) - 21:17, 13 March 2019
- #REDIRECT [[Pressure prediction: analysis of well-log and seismic data]]72 bytes (9 words) - 14:53, 10 May 2014
- #REDIRECT [[Core-to-log transformations and porosity-permeability relationships]]81 bytes (6 words) - 15:37, 19 December 2014
- ==Log of drilling rate== ...es vs. depth. These define a normal shale trend (NST) line for each of the log curves to be used.<br>5 KB (733 words) - 17:57, 17 February 2022
- | chapter = Core-log transformations and porosity-permeability relationships ==Core-log transformations==14 KB (1,893 words) - 20:15, 2 February 2016
- 44 bytes (5 words) - 15:31, 19 December 2014
Page text matches
- #REDIRECT [[Log analysis: lithology]]37 bytes (4 words) - 17:02, 19 December 2014
- #REDIRECT [[Density-neutron log porosity]]42 bytes (4 words) - 16:56, 19 December 2014
- #REDIRECT [[Density-neutron log porosity]]42 bytes (4 words) - 19:46, 14 January 2015
- #REDIRECT [[Log interpretation: initial quick scan]]52 bytes (6 words) - 13:43, 12 August 2014
- #REDIRECT [[Core-to-log transformations and porosity-permeability relationships]]81 bytes (6 words) - 15:37, 19 December 2014
- #REDIRECT [[Pressure prediction: analysis of well-log and seismic data]]72 bytes (9 words) - 14:53, 10 May 2014
- ...her using[[vertical seismic profile| VSP]], [[synthetic seismogram]], or [[log overlay]], the final step is to compare the object to [[seismic trace]]s in ...interpreting-seismic-data_fig12-8.png|300px|thumb|{{figure number|1}}Sonic log converted to time and velocity. From Liner;<ref name=Liner1999>Liner, C., 12 KB (348 words) - 19:10, 27 January 2022
- This is the inverse of velocity and is what is displayed on a sonic log, usually in units of μs/ft or μs/m. It is also seen as ''delta t'' or ''205 bytes (40 words) - 20:03, 14 April 2014
- | title = Basic Well Log Analysis, 2nd Edition | chapter = Log Interpretation4 KB (543 words) - 14:11, 21 August 2014
- ...is measured in a borehole [[Basic_open_hole_tools#Resistivity|resistivity log]]. ...re number|1}}Simplified relationship between a lithologic log, an electric log, an MT sounding, and an inversion run using the MT sounding data.]]3 KB (486 words) - 17:53, 25 January 2022
- ...scontinuities are identified as objectively as possible on the seismic and log sections before they are tied together using the [[synthetic seismogram]].< ...ation]]s should be tied together by generating a synthetic seismogram from log information. There are two primary objectives to this step:<ref name=ch21r45 KB (746 words) - 16:54, 4 February 2022
- ...ibrated well logs into well log [[cross section]]s constructed during well log [[Sequence stratigraphy|sequence analysis]]. ...acies of [[Depositional sequence definition|depositional sequences]] using log cross sections and seismic sections with seismic facies analyses.2 KB (317 words) - 18:52, 4 February 2022
- ...or a nearby well, or it can be calculated using spontaneous potential (SP) log data. ...of the mud filtrate (R<sub>mf</sub>) at measured temperature, found on the log header. If only mud resistivity (R<sub>m</sub>) is given, convert it to R<s6 KB (1,027 words) - 16:40, 5 April 2022
- * [[Well log sequence analysis]] * [[Combining well log with seismic sequence analysis]]2 KB (239 words) - 14:58, 4 February 2022
- ...to well and to prevent confusion or misunderstanding over the meaning of a log trace or annotation. ...2]] is an example of the layout and information content of a standard mud log. The general usage of the tracks (columns) on a mudlog are outlined here.5 KB (752 words) - 15:39, 24 January 2022
- ...gs to predict organic richness of a unit of rock requires calibrating well log intervals to samples measured for [[Total organic carbon (TOC)|total organi ...istivity|resistivity logs]]. The table below<ref name=ch06r7 /> summarizes log responses to organic matter.5 KB (768 words) - 15:48, 9 February 2022
- * [[Basic_open_hole_tools#Sonic|Sonic log]] with [[Checkshots_and_vertical_seismic_profiles#Checkshot_surveys|checksh * Sonic log without checkshots5 KB (805 words) - 19:06, 27 January 2022
- ==Log of drilling rate== ...es vs. depth. These define a normal shale trend (NST) line for each of the log curves to be used.<br>5 KB (733 words) - 17:57, 17 February 2022
- ...ies and corresponding resistivities taken from well logs and 2×4 cycle log-log paper. The procedure for making a Pickett plot consists of five steps, deta ...ints of matching [[porosity]] and true resistivity (R<sub>t</sub> ) on log-log paper.6 KB (878 words) - 16:16, 5 April 2022
- ...tivity|resistivity]] of the log with deepest investigation (deep induction log [ILD], deep laterolog [LLD], etc.). | Bed is < 20 ft thick for an [[Basic open hole tools#Induction|induction log]] or < 4 ft thick for a [[Basic open hole tools#Laterologs|laterolog]] || C3 KB (427 words) - 16:16, 5 April 2022
- ...es in Geology No. 27], p. 2.</ref> outlines a suggested procedure for well log sequence analysis. ...depositional lithofacies on logs using cores and cuttings to calibrate the log.6 KB (845 words) - 16:53, 4 February 2022
- ..., G. R., 1973, Pattern recognition as a means of formation evaluation: The Log Analyst, vol. 14, no. 4, p. 3–11.</ref>2 KB (244 words) - 13:38, 5 April 2022
- ==Density log== The [[Basic open hole tools#Density|density log]] measures the electron density of a formation. The logging device is a con12 KB (1,763 words) - 16:18, 5 April 2022
- * [[Conversion of well log data to subsurface stratigraphic and structural information]]867 bytes (82 words) - 20:42, 16 July 2014
- ===Sonic amplitude log=== ...s case, the fracture is present but is not detected by the sonic amplitude log.9 KB (1,380 words) - 17:25, 18 January 2022
- ...red. The synthetic then correlates with both the seismic data and the well log from which it was generated. ...ng|400px|thumb|{{figure number|1}}Synthetic seismogram and associated well log data.]]8 KB (1,199 words) - 13:57, 24 January 2022
- ==Log response and S<sub>w</sub>== Variations in pore geometry have the expected effect on log responses and [[water saturation]]s (S<sub>w</sub>). The Midale vuggy beds4 KB (588 words) - 17:01, 12 April 2022
- | chapter = Core-log transformations and porosity-permeability relationships ==Core-log transformations==14 KB (1,893 words) - 20:15, 2 February 2016
- ...re its time.''</ref> developed his famous equation to calculate, from well log parameters, the [[water saturation]] (S<sub>w</sub>) of the uninvaded zone ...general terms; suggested methods are most useful when dealing with modern log suites of good quality.5 KB (703 words) - 13:52, 5 April 2022
- ==Weyburn well log== ...-system-quality-and-performance_fig9-101.png|{{figure number|3}}example of log characteristics of Midale beds in a Weyburn field well.<ref name=ch09r11>Co6 KB (842 words) - 18:50, 4 December 2023
- ...ight: Gearhart-Owens.<ref name=G-O1972>Gearhart-Owens Industries, 1972, GO Log Interpretation Reference Data Handbook: Fort Worth, Gearhart-Owens Industri #*::: BHT = bottom-hole temperature (found on log header) (°F)5 KB (714 words) - 15:19, 13 September 2022
- ...|wireline logs]], integrate the biostratigraphic data with correlated well log and [[seismic data]], and select candidate depositional sequences. ...smic profile interpretations, biostratigraphic analyses, and regional well log [[cross section]]s.3 KB (409 words) - 21:47, 22 February 2022
- ...zed, all digital log data should be plotted and compared with the original log hard copies. ...><ref name=pt04r7>Neinast, G. S., Knox, C. C., 1973, Normalization of well log data: SPWLA 14th Annual Logging Symposium Transactions Paper I.</ref><ref n13 KB (2,094 words) - 17:42, 18 January 2022
- ...Michigan: The Log Analyst, September-October, p. 1-10</ref> courtesy ''The Log Analyst''.]] ...a remote higher [[porosity]] zone not detected by the gamma-gamma density log. The broader difference anomaly observed over the length of the interval is11 KB (1,596 words) - 18:08, 24 January 2022
- ...p://www.merriam-webster.com/dictionary/outcrop outcrop] sections, and well log sections. ...uence boundaries) in seismic sections, outcrop sections, and regional well log sections.6 KB (862 words) - 15:20, 4 February 2022
- | Gamma-gamma log || 8 || 20 || 17 || 0.5 | Neutron log || 14 || 36 || 40 || 1.15 KB (720 words) - 18:07, 24 January 2022
- ...ta taken on a 30-ft (9.1-m) interval show abundance peaks crossing a sharp log break from a thin carbonate to marine shale.]] ...e a common feature of the maximum flooding surface (MFS). Seismic and well log correlations confirm that this break is an MFS overlain by a prograding cla6 KB (872 words) - 15:20, 4 February 2022
- ...traveltime]], which is calculated from [[Basic_open_hole_tools#Sonic|sonic log]] measurements. ...typically 10–90 Hz (low frequency, long wavelength). This means the sonic log is influenced by a tiny volume of rock compared to a seismic wave passing t3 KB (486 words) - 19:10, 27 January 2022
- | chapter = Conversion of well log data to subsurface stratigraphic and structural information Conversion of log depths to positions with respect to the surface location of a well is the f17 KB (2,363 words) - 16:49, 20 January 2022
- ...ection.<ref name=pt04r3>Dewan, J. T., 1983, Essentials of modern open-hole log interpretation: Tulsa, OK, Penn Well Books.</ref> ...the interpretation of the [[Basic open hole tools#Spontaneous potential|SP log]] is the establishment of “sand” and “shale” lines, as shown in [[:13 KB (2,077 words) - 17:26, 18 January 2022
- ...nd-limited inversion of several traces around a reef. The integrated sonic log from the reef well is shown as the dark trace in the central part of the fi ...based inversion of several traces from around a reef. The integrated sonic log from the reef well is shown as the dark trace in the central part of the fi8 KB (1,196 words) - 18:48, 21 January 2022
- ...[[Seismic interpretation|seismic]], [[Quick-look lithology from logs|well log]], [[Petroleum reservoir fluid properties|fluid character]], [[Formation fl1 KB (176 words) - 12:51, 3 July 2014
- file:sedimentary-basin-analysis_fig4-48.png|{{figure number|1}}Well log cross-section of the ''Glob alt'' reservoir interval. After Armentrout et a ...ation of the ''Glob alt'' sandstones. The top seal, which occurs above the log cross section, is a major mudstone condensed interval coincident with the '5 KB (662 words) - 14:48, 19 December 2023
- ...cored sequence of tight gas reservoir facies and correlations to electric log responses of the Frontier Formation, Green River basin, Wyoming. Lithologie ===Core to log correlations===11 KB (1,444 words) - 21:26, 4 January 2024
- ...s of similar pore type. Petrophysical characteristics, such as distinctive log character and/or porosity-[[permeability]] relationships, define individual * Well log curve character9 KB (1,231 words) - 18:42, 1 April 2022
- ! Show type || Core or cuttings || Mud log || Sw% || Log analysis || Dst || [[Wireline formation testers|Repeat formation tester (RF ! Show type || Core or cuttings || Mud log || Sw% || Log analysis || Dst || Rft8 KB (1,130 words) - 17:09, 5 April 2022
- * [[Well log sequence analysis]] * [[Combining well log with seismic sequence analysis]]5 KB (647 words) - 15:49, 4 February 2022
- ===Log analysis===5 KB (644 words) - 15:30, 3 February 2022
- ...thers. Some approaches are needed to characterize reservoir, by using well log data, the user may be able to calculate: ...ror. Figure 1 shows the steps for reservoir characterization by using well log data. Basically, there are two types of properties that will be used in res25 KB (3,679 words) - 21:17, 13 March 2019
- * variations in well log response ==Building regional log cross sections==14 KB (1,901 words) - 15:16, 9 January 2024