化学吞吐技术在海上稠油油田的试验研究  

Experimental Study on Chemical Huff and Puff Technology in Offshore Heavy Oilfield

作　　者：张颖[1] 黄子俊[1] 宫汝祥[1] 冯祥[1] 姜杰[1] Zhang Ying;Huang Zijun;Gong Ruxiang;Feng Xiang;Jiang Jie(China Oilfield Services Limited,Tianjin 300459,China)

机构地区：[1]中海油田服务股份有限公司,天津300459

出　　处：《非常规油气》2020年第1期44-49,共6页Unconventional Oil & Gas

基　　金：国家科技重大专项“大型油气田及煤层气开发”(2011ZX05057)子课题“海上稠油油田热采技术试验示范”(2011ZX05057-005)资助。

摘　　要：为了改善海上A稠油油田低产井生产状况,针对原油流动性差的问题,提出采用化学吞吐降黏改善原油流动性以提高产量。运用室内实验、油藏工程方法和数值模拟研究方法,研究化学吞吐试验选井原则、进行化学吞吐体系室内实验和注入量优化,并在海上A稠油油田现场试验应用。结果表明:①选井原则为主力油层井控制储量大于50×104 m 3,储集层厚度大于3 m,泥质含量小于15%,孔隙度大于25%及渗透率大于200 mPa·s等;②化学吞吐体系为CH-4作为稠油乳化降黏主剂,添加防乳化剂和润湿反转剂形成;③推荐试验井最优注入量为500 m 3,吞吐后有增液增油效果,有效期为113 d,累增油756 m 3。以上成果认识,对同类油田具有一定的推广及应用前景。In order to improve the production status of low-yield wells in offshore A heavy oilfield,aiming at the problem of poor fluidity of crude oil,it was proposed to improve the fluidity of crude oil by chemical huff and puff.Using laboratory tests,reservoir engineering methods and numerical simulation research methods,the selection principle of chemical huff and puff in offshore heavy oilfield,the laboratory test of the chemical huff and puff system and the optimization of injection volume were studied,and it was applied in the field test of offshore A heavy oilfield,and it was applied in the field test of offshore A heavy oilfield.The results showed that:①The well selection principle is that the probable reserves of the main reservoir are more than 500000 square meters,the reservoir thickness is more than 3 m,the shale content is less than 15%,the porosity is more than 25%,and the permeability is more than 200 mPa·s,etc.②The chemical huff and puff system is CH-4 as the main agent for emulsified viscosity reduction of heavy oil,adding anti-emulsifier and wetting reversal agent.③It is recommended that the optimal injection volume of the test well is 500 m 3,with the effect of increasing fluid and oil after stimulation.The effective period is 113 days,and the cumulative oil increase is 756 m 3.The above achievements have a certain promotion and application prospects for similar oilfields.

关 键 词：海上稠油油田 化学吞吐 乳化降黏 吞吐试验 效果分析 

分 类 号：TE345[石油与天然气工程—油气田开发工程]