中南大学学报（自然科学版）2012，Vol.43Issue(3)：1065-1071,7.
特低渗透断块油藏不规则三角形井网有效动用系数计算及应用
Calculation and application of effective development coefficient for irregular triangular patterns in extra-low permeability fault block oil reservoirs
摘要
Abstract
Based on the popular pattern shapes in fault block oilfields and the nonlinear characteristics of the fluids flow in extra-low permeability reservoirs, the expression of effective development coefficient was derived through the streamtube-integration method, and then the effects of pressure difference, well patterns geometry and the shapes of nonlinear flow curves on EDC were analyzed. The new theory was applied to evaluate the well patterns in Hua 17 Block in Jiangsu Oilfield, and a proposal for patterns adjustment was put forward. The results show that in homogeneous isotropic extra-low permeability fault-block reservoirs, the optimal well patterns are those in the shapes of isosceles or quasi-isosceles triangles; for a certain non-isosceles triangle pattern, there is a critical pressure difference and a critical well spacing value bringing the EDC on abrupt changes; and increasing pressure difference is an effective measure to improve the development effect for relatively higher permeability reservoirs while reducingiwell spacing or row spacing is effective for the relatively lower ones.关键词
特低渗透率/断块油藏/不规则三角形井网/非线性渗流/流管积分法/有效动用系数Key words
extra-low permeability/ fault block oil reservoirs/ irregular triangular patterns/ non-linear flow/ streamtubeintegration/ effective development coefficient分类
能源科技引用本文复制引用
齐亚东,雷群,杨正明,何英,骆瑛,杨鹏..特低渗透断块油藏不规则三角形井网有效动用系数计算及应用[J].中南大学学报（自然科学版）,2012,43(3):1065-1071,7.基金项目
国家自然科学基金资助项目(10672187) （10672187）
国家科技重大专项项目(2008ZX05000-013-02) （2008ZX05000-013-02）
