中原油田低渗透油藏氮气驱矿场先导试验  

Pilot Field Test of Nitrogen Injection in Low Permeability Oil Reservoir in Zhongyuan Oilfield

作　　者：曾贤辉[1] 彭鹏商[1] 陈德斌[1] 娄兆彬[1] 高正龙[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

出　　处：《大庆石油地质与开发》2002年第3期68-69,共2页Petroleum Geology & Oilfield Development in Daqing

摘　　要：低渗透油藏氮气驱矿场试验是中原油田氮气驱可行性研究的重要内容。先导试验选取卫 4 2块卫 4 2 14井组进行氮气驱 ,该区块平均空气渗透率为 3 5× 10 - 3 μm2 ,平均孔隙度为 13% ,氮气驱先导试验表明 ,注气的启动压力达到 5 0MPa ,随着注入量的增加压力上升 ,上升到一定程度维持稳定 ,稳定注气压力为 5 6MPa ,日注氮气能力为 2 1814 8m3 ,注气后 5 0多天 ,油井产量明显上升 ,累计注液氮 86 3 73m3 ,井组累计增油 6 4 6t,效果明显 ,注气设备在高压下正常工作 ,试验达到了预期目的。It is an important content for the feasibility study of nitrogen injection in Zhongyuan oilfield to put up a pilot field test of nitrogen injection in low permeability oil reservoir. The test of nitrogen is developed in Wei42-14 well-group in Wei42 block with average air permeability of 3.5×10 -3 μm 2 and average porosity of 13%. The pilot test of nitrogen injection shows that the highest starting pressure of gas injection is 50 MPa and then it increases with injection rate and is stable after arriving at a certain degree. In this test, the stable gas injection pressure is 50 MPa and the daily gas injection rate std 21 814.8 m 3.After more than 50 days of gas injection, the oil well production increase of obviously with a significant effect of cumulative liquid nitrogen injection quantity 863.73 m 3,and cumulative increase oil of 646 t. The gas injection equipment run well in high pressure condition. The overalltest reach the expected target.

关 键 词：低渗透油藏 氮气驱 矿场试验 提高采收率 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]