摘要
任丘雾迷山组油藏开发的中前期立足于自喷生产，采用边缘底部注水，保持了较高的压力水平。油藏开发后期生产方式逐步从自喷转为抽油开采。自１９９１年８月以来开展降压开采试验，改善了油藏后期开发效果和水驱状况，提高了油藏水驱采收率，控制了油藏含水上升速度，减缓了油藏产量递减速度，增油降水效果及经济效益十分显著。共计增产原油４５．９×１０４ｔ，少产水量６０．６×１０４ｍ３，减少注水量１３８９．２×１０４ｍ３，提高水驱采收率０．３１％，创经济效益２．１亿元。图２（郭海莉摘）
At the early and middle stages of the development, the Wumishan oil deposit was produced mainly by flowing and by peripheral bottom water flooding to maintain its higher pressures. With the further exploitation, the reservoir converted its oil producing scheme from flowing into pumping. Since August 1991, after entering into the late stage of the development, the depressurization recovery test has been carried out to effectively improve the effects of the water flooding, and increase the oil recovery while controlling the water cut and slowing down the production decline. This leads to prominent economic benefits of 45.9×10 4t of oil output increase, 60.6×10 4m 3 of water output decrease, 1,389.2×10 4m 3 injection water reduction, 0.31% of oil recovery increase and economic gain of 210MM Yuans.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1998年第3期80-82,共3页
Petroleum Exploration and Development
关键词
任丘油田
油藏降压开采
碳酸盐岩油田
Basement reservoir, Development late stage, Decrease, Water injection rate, Field testing, Renqiu oil field
