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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
U.S. Gulf Coast Field Experience with Thin-Bed Well Log Analysis
Tony D. Lawrence (1), Ashok K. Sinha (2), Walter H. Fertl (3)
ABSTRACT
Thinly bedded reservoir sand sequences are encountered throughout the world, particularly as low-resistivity intervals in the U.S. Gulf Coast area. Despite apparent water saturation values ranging from 55 to 85%, as derived by conventional log interpretation techniques, such intervals can be important producers.
Recent technological advances in novel, high-resolution logging instrumentation, increased high-sampling rate data acquisition, advances in high-resolution signal processing (e.g., deconvolution) techniques, and newly developed thin-bed interpretation methods now allow an improved reservoir description of such sequences. Improvements include reliable net pay count; enhanced well-to-well correlation; better thin-bed correlation of well log, core, and test data; and thus provide a more accurate identification and quantitative evaluation of oil and gas-bearing stringers.
This paper presents several Gulf Coast field examples using well logging, coring, and well test information to illustratethese concepts.
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