特低渗透断块油藏井网优选数值模拟  

Optimization of Well Patterns in Extra-Low Permeability Fault-Block Reservoirs by Numerical Simulation

作　　者：齐亚东[1,2] 杨正明[1,3] 晏军[1,2] 骆瑛[4] 杨鹏[4] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廊坊065007 [2]中国科学院研究生院,北京100083 [3]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [4]中国石化江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《新疆石油地质》2011年第4期392-395,共4页Xinjiang Petroleum Geology

基　　金：国家自然科学基金(10672187);国家科技重大专项(2008ZX05000-013-02)

摘　　要：特低渗透断块油藏的几何形状以及流体非线性渗流特征都对井网部署有影响。针对不同几何形状的特低渗透断块油藏设计了不同形式的注采井网,以江苏油田花17断块为例,在考虑流体非线性渗流特征的前提下,应用研发的非线性渗流数值模拟软件对每种井网形式进行了开发效果评价。研究表明,对于可以部署两排直井的条带状断块油藏,注水井"隔一布一"地正对采油井部署的方式相对最优;小型条带状油藏选择水平井采油直井注水时,注水井的相对最优位置为水平井井趾的外围;对于可以部署少量直井的小三角形油藏,注水井置于采油井排外侧有利于提高开发效果。此项研究为特低渗透断块油藏的井网优化提供了一种新方法。Arrangement of well pattern in a extra-low permeability fault-block reservoir is affected by its geometry and nonlinear flow features.Taking Hua-17 block in Jiangsu oilfield as an example,different well patterns are designed in view of its different geometries,and the nonlinear flow features are considered.Then the development effect of each well pattern is evaluated using the nonlinear flow numerical simulation software.The results show that for the banding-like fault block reservoirs that two rows of vertical wells can be arranged,the optimal pattern is the one with the injection wells arranged opposite every second production well;for the small-size banding reservoirs,a horizontal production well and a vertical injection well can be arranged,and the optimal location of the vertical well is the periphery of the horizontal well＇s hoe;for the triangular reservoirs which can arrange a few vertical wells,the injection well should be arranged outside the production well line to achieve the optimal development effect.This research provides a new method for well pattern optimization of extra-low permeability fault block reservoirs.

关 键 词：特低渗透率 断块油藏 井网优选 非线性渗流数值模拟 

分 类 号：TE347[石油与天然气工程—油气田开发工程]