低渗透非均质异常高压深层砂岩油藏的高效开发  

High Efficiency Development of Low-permeability Heterogeneity Uncommonly High-pressure Deep Sandstone Reservoir

作　　者：涂兴万[1] 邓瑞健[1] 谷维成[1] 莫文丽[2] 莫小国[1] 

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]中原石油勘探局钻井工程技术研究院,河南濮阳457001

出　　处：《大庆石油地质与开发》2002年第6期29-31,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：低渗透储层由于渗流阻力大存在启动压差 ,注水开发难度较大 ;非均质储层由于层间、平面渗流能力差异大导致储量动用程度差异大 ;渤海湾盆地异常高压油藏一般属欠压实型 ,投入开发后地层压力下降导致储层孔渗降低且部分不可逆 ,影响开发效果 ;深层油藏压力温度高 ,对工艺技术要求高。采用密井网逐层上返与细分层系相结合的开发方式 ,利用以整体压裂改造为中心的配套技术 ,实现了文 33块沙三上Low permeability reservoir bed has a large seepage resistance force to the flow of fluids in it, and reservoir bed fluids can flow only when a pressure is above certain pressure which is called startup pressure,which acts on it, so waterflooding development of low permeability reservoir is hard. There is a big difference on the ratio of harvesting among layers because of large differences on seepage ability among layers and on the plane of a heterogeneity reservoir. Uncommenly high pressure reservoir in Bohai Gulf Basin is generally lack pressure type. The pressure of reservoir descends after it is putted into developing which results the descents of permeability and porosity,and the descents of permeability and porosity cannot be completely recovered, thus causes an affect the effects of development. The temperature and pressure of deep reservoir are high, so its development needs high technics and technology. Wen 33 block, a low permeability reservoir was developed with a high efficiency by the development method of combination zone by zone upgoing, subdivided series and adopting a whole set of technology focused on integer fracturing.

关 键 词：低渗透 非均质 异常高压 砂岩油藏 逐层上返 细分层系 整体压裂 注水开发 

分 类 号：TE348[石油与天然气工程—油气田开发工程]