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Research On The Electrometric Characteristic And Identifying Method Of Bighole In Lamadian Oil Field

Posted on:2007-11-07Degree:MasterType:Thesis
Country:ChinaCandidate:D C SongFull Text:PDF
GTID:2120360185990682Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
The problem of bighole in the development of oil field occurs in recent years, and presently not enough importance is attached to it home and abroad. But because of the special development course and reservoir characteristic, the problem of bighole has occurred in Lamadian oil field. Lamadian oil field has entered extraordinary high water-content development period. It is showed by core analysis of examining well, indoors substance module experiment and field dynamic monitoring material show that there is serious problem of inefficacy and low efficacy in inhomogeneous multi oil layer sandstone oil field made up mainly by thick oil layer when the comprehensive saturation is up to ninety percent. Abundant injected water circulates ineffectively or low effectively in convenient channel with high permeability and high saturation (called bighole for short).The existence of bighole results in low recovery ratio, production cost rising and development benefit descending, so it bring substantial pressure to the oil field development. As a result, research on technique of identifying bighole is necessitous.The thesis studies the formation mechanics of bighole. Based on the reflection of microscopic change of bighole on logging curve, the characteristic of electronic logging curve of bighole is found. SP curve increases, GR curve decreases, AC curve increases, RLL resistance curve decreases, the diameter of well increases and micro-electrode curve decreases. Interpreter model with regional characteristic is established and reservoir parameter of bighole in the experimental zone is calculated. The characteristic of the change of the parameter of bighole is analyzed. The content of argillaceous decreases, the saturation of water increases,...
Keywords/Search Tags:bighole, formation mechanic, logging curve, saturation of water, permeability, radium of porosity
PDF Full Text Request
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