坪北低渗透油藏开发井网优化  

OPTIMIZATION OF WELL PATTERN IN DEVELOPMENT OF PINGBEI LOW-PERMEABILITY OIL RESERVOIR

作　　者：张少波[1] 汪益宁 许建红[3] 赖枫鹏[4] 滕蔓[5] 

机构地区：[1]中国石化江汉油田分公司坪北经理部,陕西安塞717408 [2]北京华油地智能源工程技术中心,北京100083 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [4]中国地质大学能源学院,北京100083 [5]中海油田服务股份有限公司油田生产事业部油藏技术所,河北廊坊065201

出　　处：《大庆石油地质与开发》2011年第3期63-66,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：基金项目：国家重大专项“复杂油气田地质与提高采收率技术”资助项目（2009ZX05009）.

摘　　要：鄂尔多斯盆地坪北油田长81。油藏是典型的渗透率低、储量丰度低、产能低的三低油藏。合理选择“三低油藏，，的井网形式、井网密度以及井排距关系到油田的采油速度和最终采收率。为了经济有效地开发此类油藏，应用油藏工程、油藏数值模拟和经济评价方法开展研究，得到了坪北浦田低渗透砂岩油藏不同原油价格下合理井网形式、井网密度及井排距。研究表明，低渗透油藏参数变化较大，需要对不同储层类型进行合理分类，同类型油藏的采出程度与井网密度成很好的正相关关系，适当采用偏大的井网密度可提高低丰度、低渗透油田产油量和效益。Chang-81 oil reservoir of Pingbei Oilfield in Ordos Basin is a typical three-low oil reservoir i. e. low permeability, low reserves abundance and low productivity. The selections of rational well pattern mode, well spacing density and well array distances for a three-low oil reservoir are closely related to the production rate and ultimate recovery factor of the oilfield. In order to economically and efficiently develop this kind of oil reservoir, reservoir engineering, reservoir numerical simulation and economic evaluation methods are applied. Rational well pattern modes, well spacing density and array distance under different crude oil prices for the low-permeability sandstone reservoirs of Pingbei Oilfield are obtained. The researches show that different reservoir types should be reasonably classified on account of the great variation of low-permeability oil reservoir parameters; the recovery percent of same-type oil reservoir and well spacing density possess present obvious positive correlation; the appropriate application of high-denstiy well pattern can increase the oil production and benefits of the oilfields with low abundance and low permeability.

关 键 词：低渗透油藏 井网形式 井排距 油藏工程 油藏数值模拟 

分 类 号：TE348[石油与天然气工程—油气田开发工程]