裂缝型油藏油溶颗粒堵剂研制及性能评价  

Development and performance evaluation of oil-soluble particle plugging agent in fractured reservoir

作　　者：朱立国 刘长龙 孟科全 陈维余 张艳辉 ZHU Li-guo;LIU Chang-long;MENG Ke-quan;CHEN Wei-yu;ZHANG Yan-hui(CNOOC Enertech-Drilling&Production Co.,Ltd.,Tianjin 300452,China;Tianjin Branch of CNOOC Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《化学工程师》2023年第7期56-59,83,共5页Chemical Engineer

基　　金：中国海洋石油集团有限公司科研项目(CNOOC-KJ135KJXM NFGJ2019-05):双重介质碳酸盐岩油藏调驱/堵控水技术研究与应用;中海油能源发展股份有限公司重大专项(HFKJ-ZX-GJ-2023-02):增储上产关键技术/产品研究。

摘　　要：针对裂缝型油藏,常规堵剂选择性差,在封堵出水大裂缝的同时,也会污染出油中小裂缝的问题,以渤海A油田为研究对象,研发出油溶颗粒堵剂,并对其微观结构、热重、接触角以及油水分散性、油水选择性封堵等性能进行系统评价。结果表明,该堵剂具有微观三维网状结构,结构分解温度为298℃,在水中均匀分散、油中溶解,水相溶解率为7.65%,油相溶解率为83.67%,裂缝岩心水相封堵率为93.33%,油相封堵率为15.79%,说明该油溶颗粒堵剂具有较好的耐温性和油水选择性封堵性能。In order to solve the problem that the selectivity of conventional plugging agent is limited in the fractured reservoir,and it will pollute the medium-small fractures of oil production while plugging the large fractures of water production.Aiming at A oilfield of Bohai,the oil-soluble particle plugging agent is developed,and its microstructure,TGA,contact angle,oil-water dispersion and oil-water selective plugging are systematically studied.The results show that the plugging agent has a micro three-dimensional network structure,the structure decomposition temperature is 298℃,at the same time this agent can be dispersed in water and dissolved in oil,and the water dissolution rate is 7.65%,the oil dissolution rate is 83.67%,the water plugging rate of fracture core is 93.33%,and the oil plugging rate is 15.79%.in this way,the oil-soluble particle plugging agent has good temperature resistance and oil-water selective plugging performance.

关 键 词：裂缝型油藏 油溶颗粒堵剂 耐温性 选择性封堵 

分 类 号：TQ648.17[化学工程—精细化工]