最大水平主应力评价方法对比研究  

Comparative Study on Evaluation Methods of Maximum Horizontal Principal Stress

作　　者：张洋洋[1] 刘志慧[1] 郑黎明[2] 李成华[1] ZHANG Yang-yang;LIU Zhi-hui;ZHENG Li-ming;LI Cheng-hua(College of Petroleum Engineering,China University of Petroleum(East China);College of Vehicles and Energy,Yanshan University)

机构地区：[1]中国石油大学(华东)石油工程学院 [2]燕山大学车辆与能源学院

出　　处：《化工机械》2022年第2期225-228,共4页Chemical Engineering & Machinery

基　　金：国家自然科学基金青年科学基金项目(51504215);中国博士后科学基金面上项目(2018M631765);山东省自然科学基金项目(ZR2016EEP08);中国石油大学(华东)探究性实验项目——复杂压力管路的水力计算实验。

摘　　要：在油气田开发中,最大水平主应力是应力场动态分析的重要基础,虽然获取手段多样,但缺少适用性的区分与判别。列举了几种计算最大水平主应力的方法,对各评价方法对比研究后认为水力压裂方法在计算时更为适用。结合国内外最大水平主应力测量数据,利用有效最小水平侧压系数的倒数、最大和最小水平主应力的比值,找出最大水平主应力与水平应力差异、深度等的关系,给出对于各向异性较强的地层更精确的计算公式,用于最大水平主应力的对比计算。The maximum horizontal principal stress is important foundation for dynamically analyzing stress fields in oil and gas fields development and it can be acquired in various means but it lacks discrimination of applicability.In this paper,methods to calculate the maximum horizontal principal stress were presented and assessed to show that,the hydraulic fracturing method is relatively more applicable.Combined with horizontal principal stress detection data at home and abroad and making use of the reciprocal of the effective minimum horizontal lateral pressure coefficient of fracture,the ratio of maximum and minimum horizontal principal stress to obtain the difference and depth between the maximum horizontal principal stress and the horizontal stress were obtained,including more accurate formula for strong anisotropy formation and for the comparative calculation of the maximum horizontal principal stress.

关 键 词：最大水平主应力 油气藏开发 水压致裂 准确性 适用性 

分 类 号：TQ055.81[化学工程]