特低渗透断块油藏井网优化  

WELL PATTERN OPTIMIZATION OF FAULT BLOCK RESERVOIRS WITH ULTRA-LOW PERMEABILITY

作　　者：董平川[1] 赵常生[1] 李莉[2] 李彦兴[2] 韩德金[2] 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京102249 [2]大庆油田有限责任公司,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2009年第1期45-50,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目（编号50574059和50004002）.

摘　　要：通过海拉尔盆地贝中次凹南一段I油组的地质、试采、开发特征的综合分析研究，主力开发层系I油组属于特低渗透断块油藏，裂缝不发育，并建立南一段地质模型。对研究工区内探井、评价井各种资料数据统计分析，在考虑启动压力梯度条件下进行相关油藏工程计算，同时参考国内低渗透油田井网部署资料，综合油藏数值模拟方法得到南一段I油组井网优化部署研究结果：矩形反九点，排距井距150m×250m。综合南一段I油组地质、开发现状特征，部署56口开发井，应用地质模型合理粗化数据体进行油藏数值模拟，实现15年开发指标预测，为油藏的合理开发投产起到一定借鉴和指导意义。Through comprehensive analysis （geology, production test and development characteristics ） on Unit I of Nan I Member in Beizhong Subsag of Hailaer Basin, the main development layer series Unit I is regarded as ultra-low permeability fault block reservoir with fractures not developed, and geological model of Nan I Member is developed. Through statistical analysis on data of exploration wells and appraisal wells in the studied area, relative engineering calculation under the condition in consideration of starting pressure gradient is conducted. By referring pattern arrangement data from domestically low permeability oilfields and using comprehensively numerical reservoir simulation methods, research results of pattern optimization for Unit I in Nan I Member is obtained. Well pattern is rectangular inverted nine-spot, and well spacing of a row is 150m×250m. Combing geology and development situa- tion characteristics of Unit I in Nan I Member, 56 development wells are arranged. Using reasonable upscaling data volume, a numerical reservoir simulation is conducted to realize development index prediction for 15 years, providing guides for putting reservoirs into production.

关 键 词：特低渗透油藏 断块油藏 井网 井距 

分 类 号：TE324[石油与天然气工程—油气田开发工程]