油井热洗暂堵剂研究  

Development of temporary blocking agent for oil well hot washing

作　　者：杨蕾[1] 宋奇[1] 罗江涛[1] 王志明[1] 王建华[1] 

机构地区：[1]中国石化江苏油田分公司石油工程技术研究院,江苏扬州225009

出　　处：《复杂油气藏》2016年第4期80-84,共5页Complex Hydrocarbon Reservoirs

摘　　要：针对油井洗井等常规作业中入井液漏失地层,造成地层发生油水乳化、粘土膨胀、水锁等储层污染,油井投产后长时间才能恢复油井产能的问题,筛选出了一种油溶性暂堵剂JA-1,在室内与常规药剂、区块水样进行了配伍实验,且对暂堵剂封堵解堵效果进行了研究。实验结果表明,该暂堵剂与油田常规防膨剂、区块水样等配伍性好,封堵强度高,封堵率可达95%以上,同时也易快速解堵,解堵率达95%以上。The working fluid leaking into the formation in the conventional workover jobs such as oil well hot washing can cause the formation damage of oil -water emulsification, clay swelling, water blocking, etc. So the well production is re- covered for long time after putting into production. Aiming at this problem, a kind of oil soluble temporary blocking agent, JA - 1 was developed. In lab, it was carried out the compatibility of JA - 1 with the conventional agents and water samples from target blocks. And then it was evaluated the effect of blocking and plug removal of JA - 1. Experimental results indicated that JA - 1 has a good compatibility with the conventional anti - swelling agents and water samples from target blocks. The blocking strength is high with a blocking rate of more than 95 %. Meanwhile the blockage can be easily removed with a plug removal rate of more than 95%.

关 键 词：暂堵剂 热洗 洗井伤害 封堵 解堵 

分 类 号：TE39[石油与天然气工程—油气田开发工程]