Results 261 to 270 of about 6,879,798 (323)

Geology Analysis of Well Logs: ABSTRACT

AAPG Bulletin, 1965
Well logs serve many purposes. One part of log usage is directed toward evaluation of formation parameters: porosity, permeability, water saturation, and water salinity. Another, and perhaps the most extensive, part of log usage is applied to exploratory prospect or field-development studies related to correlation, and lithologic, structural, and ...
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Regularity Analysis Applied to Well Log Data

2005
Well logs are largely used for oil exploration and production in order to obtain geological information of rocks. Several parameters of the rocks can be scanned and interpreted in term of lithology and of the quantity and kind of fluids within the pores. Generally the drilled rocks are mostly sedimentary and the modelling is mainly petrophysical.
Maurizio Fedi, Donato Fiore, Mauro La Manna   +2 more
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Evaluation and Development of a Predictive Model for Geophysical Well Log Data Analysis and Reservoir Characterization: Machine Learning Applications to Lithology Prediction

Natural Resources Research, 2022
Aditya Mishra, Anjali Sharma, A. K. Patidar   +2 more
semanticscholar   +1 more source

Best practise for well log rock physics analysis

65th EAGE Conference & Exhibition, 2003
We present a tutorial overview of rock physics techniques for quality control and interpretation of sonic and density log data. Major effects that deteriorate the quality of well log data include mud-filtrate invasion, wash-outs, deviated well paths, and erronous sonic velocity picks.
P. Avseth, A. -J. Van Wijngaarden, N. Skjei   +2 more
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Computer Analysis of Early Well Logs: ABSTRACT

AAPG Bulletin, 1983
Geophysical well logs have been recorded in wells drilled for petroleum and natural gas since the early 1930s. These, largely hard-copy records, comprise the greatest pool of factual subsurface information on producing reservoirs and on new prospects that were either not economic or overlooked when the wells were drilled originally. As such, they are a
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Well Completion in Directional Wells with Emphasis on Log Analysis, Petrophysics, and Core Mineral Analysis

Proceedings of SPE Western Regional/AAPG Pacific Section Joint Meeting, 2003
Abstract In this paper, we present a comprehensive methodology and several case histories that show the results of the proposed methodology for completing a well in highly laminated, dirty, and unconsolidated sands. The problems associated with the standard well completions are many, notable among which are the failure of perforation ...
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Imputation of missing well log data by random forest and its uncertainty analysis

Computational Geosciences, 2021
R. Feng, D. Grana, N. Balling
semanticscholar   +1 more source

CBM Well Structure Analysis from Ultrasonic Image Logs

81st EAGE Conference and Exhibition 2019, 2019
Summary Coalbed methane is enriched in Shanxi Province, China, but the geological structure of coalbed methane reservoir is complex. At the present time, there are some direct or indirect methods which can be used to identify the reservoir structure information.
W. Du, S. Peng, M. Liang
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Detrended Fluctuation Analysis of Geophysical Well-Log Data

2015
Geophysical well-log data provide a unique description of the subsurface lithology, as they represent the depositional history of the subsurface formations, vis-a-vis the variation of their physical properties as a function of depth. However, a correct identification of depths to different lithostratigraphic units is possible only by using effective ...
D. Subhakar, E. Chandrasekhar
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Analysis of Geothermal Wells With Simultaneous Logging Instruments

SPE Formation Evaluation, 1989
Summary A new series of instruments has been developed for applications in geothermal wells. These instruments provide simultaneous acquisition of spinner-flowmeter, pressure, and temperature data. The hardware and the calculation methods used to determine various wellbore steam properties are described briefly and a geothermal field ...
J. Davarzani, M. L. Sloan
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