低渗致密气藏垂直裂缝井生产数据分析方法  

Methods of Production Data Analysis for Wells with Vertical Fractures in Low-Permeability Tight Gas Reservoirs

作　　者：程敏华[1] 陆程 王军磊[1] 袁贺[1] 王晓冬[3] CHENG Minhua;LU Cheng;WANG Junlei;YUAN He;WANG Xiaodong(Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;Oil and Gas Resources Investigation Center, China Geological Survey Bureau, Beijing 100029, China;School of Energy Resources, China University of Geosciences, Beijing 100083, China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国地质调查局油气资源调查中心,北京100029 [3]中国地质大学能源学院,北京100083

出　　处：《新疆石油地质》2017年第5期620-624,共5页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2016ZX05015)

摘　　要：为进一步提高低渗致密气藏垂直裂缝井生产数据分析的准确性和可靠性,利用垂直裂缝点汇函数模型,在建立Laplace空间下均匀流量的井壁压力表达式基础上,通过数值反演,绘制Blasingame型生产数据分析典型曲线图版。在分析该图版各渗流阶段的特征后,给出快速、简洁的图版拟合方法。通过生产数据拟合,得到井控储量、渗透率、单井泄流面积和半径,以及裂缝半长等有效参数,能够迅速、有效地评价单井压裂开发效果。To further improve the accuracy and reliability of production data analysis for wells with vertical fractures in low-permeabilitytight gas reservoirs,the paper uses a point-sink function model for vertical fractures,and establishes an expression of side wall pressurewith uniform flows in Laplace space,based on which typical curve charts of Blasingame-mode production data analysis are mapped throughnumerical inversion.A rapid and simple chart matching method is obtained after the characteristics of each flowing stage on the charts areanalyzed.Through production data matching,effective parameters such as well control reserves,permeability,single well drainage area andradius,and fracture half-length etc.are gained,which can be used to evaluate single-well fracturing effect rapidly and effectively.

关 键 词：低渗致密气藏 垂直裂缝井 生产数据分析 均匀流量 有效裂缝半长 

分 类 号：TE33[石油与天然气工程—油气田开发工程]