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压裂前合理地层压力的界限及其现场评价方法研究

石油钻采工艺

1999年 21卷第3期

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Title

LIMIT OF REASONABLE PRE-FRACTURING FORMATION PRESSURE AND FIELD EVALUATION

作者

蒋廷学

Authors

Jiang Tingxue

单位

石油勘探开发科学研究院廊坊分院

摘要

根据吉林红岗、大庆喇嘛甸及华北二连等油田的现场统计资料,认为压裂后井口日增油量百分数与地层压力呈近似的正态分布规律。压裂的最佳时机为原始地层压力附近,低于原始饱和压力或超过原始地层压力达一个原始地饱压差时,压裂都将趋于无效。文中对此进行了机理上的探讨,并分析讨论了压前地层压力的一些现场评价方法,以期对国内油田的压裂工作提供借鉴和帮助。

Abstract

Based on the field statistical data from oilfields such as Honggang, Jilin; Lamadian, Daqing; Erlian, Huabei, it is concluded that the daily incremental oil percentage of the fractured well is normally distributed together with the formation pressure. The optimal pressure for fracturing is near the formation pressure. This paper explores its mechanism, analyzes and discusses some field methods for evaluating the pre-fracturing formation pressure, and hopes can provide reference and aid for fracturing work at home.

关键词：

压裂; 地层压力; 边界; 现场试验; 评价;

Keywords:

fracturing; formation pressure; boundary; field testing; evaluation;

基金项目

DOI

10.3969/j.issn.1000-7393.1999.03.015