三维压裂压力递减分析方法  

ANALYZING METHOD OF 3D FRACTURING PRESSURE DECLINE CURVE

作　　者：张亚丽[1] 赵金洲[2] 李文兴[2] 郭健春[2] 施雷霆[2] 王晓鸿 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]西南石油学院 [3]西安开米股份有限公司研发中心

出　　处：《西南石油学院学报》2004年第3期28-32,共5页Journal of Southwest Petroleum Institute

基　　金：中国石油天然气集团公司"九五"重点科技攻关项目 ( 960 5 0 5 -2 )部分研究成果

摘　　要：在前人提出的拟三维压力递减分析模型基础上 ,建立了解释压裂后压力递减的三维模型 ,模型考虑了压裂液的续流影响。利用所建模型分析的压裂停泵后的压力递减数据 ,可计算裂缝几何参数 (裂缝宽度、高度、长度 )、压裂液滤失系数、地层应力强度因子、压裂液效率和裂缝延伸时间等 ,为调整大型压裂设计方案和新区整体压裂优化设计提供可靠的参数。研制了一套windows环境下的解释软件 ,运用该软件可获得有关评价参数。With the development of fracturing technique, especially with the development of system fracturing in oil and gas reservoir, the technique of postfrac evaluation is increasingly valued. It is necessary to extensively improve and develop the corresponding test and interpretation. Based on P-3D model with pressure decline curve, a 3D model considered the pressure decline curve after fractured was established in this paper. the 3D model coupled with pressure decline curve can calculate effective fluid loss coefficient, closing time, fluid efficiency, formation stress intensity factor,fracture geometry parameters such as fracture length, fracture height, fracture width and other basic parameters. It can optimize the design of system fracturing in new oilfield and offer evidence for evaluating productivity in fractured well. A set of analysis software of 3D mathematical model for windows was developed, by which we can obtain the relevant parameters for post-fracturing evaluation. Some field examples showed that the 3D model analysis method was practical and more reliable.

关 键 词：三维压裂 压力递减 三维模型 评价软件 

分 类 号：TE357[石油与天然气工程—油气田开发工程]