深层低渗难采油藏的注水开发  

WATERFLOOD DEVELOPMENT OF DEEP SEATED LOW PERMEABLE RESERVOIR

作　　者：赵卫华[1] 常剑[1] 杜燕[1] 冯永生[1] 孔自超[2] 

机构地区：[1]中原油田分公司勘探开发科学研究院,河南濮阳457001 [2]中原油田分公司国际工程部,河南濮阳457001

出　　处：《石油与天然气地质》2001年第3期245-248,共4页Oil & Gas Geology

基　　金：中国石油化工集团公司提高采收率导向技术项目( 1998~ 1999)

摘　　要：针对中原油田文 33块沙三上油藏埋藏深、高温、高压、低渗透等地质特点和近 10余年来一直注不进、难采出、开发基本面临瘫痪状态的实际情况 ,通过开展逐层上返注水开发先导试验 ,技术上采用细分层系、加密井网、油层改造、水质改善、优化开发技术等一系列措施 ,对全油藏进行调整和治理。措施实施后 ,压裂效果显著 ,产能提高 15 8% ,注水状况明显好转 ,采油速度由 0 3 %提高到 3% ,采收率提高 8 7个百分点 ,开发水平上了等级 ,经济和社会效益十分明显。该思路与方法从根本上解决了此类油藏平面和层间的矛盾及储量水驱动用难度大的问题 。The upper oil reserves of Sha 3 member in Wen 33 block of Zhongyuan Oilfields is a deep buried,high geotemperature,high presseure and low permeable pool.For about 10 years,it has been difficult to inject and recovery.To deal with this situation,a precursor test of upward waterflood interval by interval was made associated with the technologies of subdividing measures,shortening well spaces,improving water quality and adjust the whole exploration project of the oil pool.After the test,the effect of pressure break is evident,waterflooding is much better than before and productive capacity is increased by 1580/0,oil recovery rates is increased 10 time as that before and recovery ratio increased 8.70/0.This method has essentially solved the problem between plane and interval and the difficulty of water driving of the reserves,increased recovery ratio.

关 键 词：深层低渗难采油藏 注水开发 油层改造 加密井网 细分层系 中原油田 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程] TE341