THERMAL SCIENCE

International Scientific Journal

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Junjie Dong

,

Rui Deng

COMPREHENSIVE CORRECTION METHOD OF AIRTIGHT CORING SATURATION BASED ON CORE CLASSIFICATION

ABSTRACT
The indoor comprehensive analysis of core saturation of airtight coring wells is an important part of well logging interpretation. According to the saturation data, the geological reserves can be accurately calculated, and the remaining oil saturation and water-flooded zone in the later stage of the production well can be accurately evaluated. Due to the influence of many factors in the coring process and the experiment process, the sum of the core oil and water saturation is usually not equal to 100%. At present, conventional airtight coring correction method is generally to analyze the oil-water saturation, and then correct the data of the same factors that affect the results. This article combines two methods for saturation correction of XX oilfield in China. For cores with consistent missing factors, mathematical statistics are used to correct the saturation. When most of the rock pores have irreducible water and remaining oil, the phase percolation split method is used for the correction after the experimental analysis. By comparing with the logging interpretation results and the results of adjacent wells, the feasibility of the comprehensive correction method can be verified.
KEYWORDS
loss, saturation correction, mathematical statistics, shunt method, phase percolation split method
PAPER SUBMITTED: 2021-03-03
PAPER REVISED: 2021-06-27
PAPER ACCEPTED: 2021-07-09
PUBLISHED ONLINE: 2021-10-17
DOI REFERENCE: https://doi.org/10.2298/TSCI2106153D
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4153 - 4160]
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Comprehensive correction method of airtight coring saturation based on core classification

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