灰岩堵水用粉煤灰堵剂的研制及性能评价  

DEVELOPMENT AND PERFORMANCE EVALUATION OF FLY ASH WATER PLUGGING AGENT FOR LIMESTONE AREA

作　　者：马淑芬[1] 李亮[1] 张潇[1] 任波[1] 伍亚军[1] 刘明 郭锦棠[2] Ma Shufen;Li Liang;Zhang Xiao;Ren Bo;Wu Yajun;Liu Ming;Guo Jintang(Northwest Branch of China Petroleum and Chemical Corporation, Urumqi 830011, Xinjiang, China;School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, Tianjin, China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司,新疆乌鲁木齐830011 [2]天津大学化工学院,天津300350

出　　处：《精细石油化工》2020年第5期35-39,共5页Speciality Petrochemicals

基　　金：国家科技重大专项资金资助项目(2016ZX05053-004);国家科技重大专项资金资助项目(2016ZX05014-005);中石化重大专项资金资助项目(P18022-3)。

摘　　要：为满足灰岩油藏区的封堵要求,以粉煤灰为主剂,加入固化剂、悬浮剂、缓凝剂等助剂,研制出一种低成本粉煤灰无机胶凝堵剂。以固化时间及固化强度为主要评价指标,分析各组分种类及含量对于堵剂体系性能的影响,优选出最佳堵剂配方为粉煤灰(B类)质量分数35%,悬浮剂钠基膨润土质量分数3%,固化剂氢氧化钙质量分数为3%~5%,缓凝剂质量分数为0.5%~1%(占粉煤灰)。实验结果表明该类粉煤灰堵剂固化时间在12 h左右,固化强度>1 MPa,满足灰岩油藏区堵水的现场施工要求。A low-cost fly ash inorganic gel plugging agent was developed using fly ash as main agent,adding curing agent,suspending agent,retarder and other auxiliaries to meet the plugging requirements of limestone oil reservoirs.With the curing time and curing strength as the main evaluation indexes,the influences of the mass fraction and types of each component on the performance of the plugging agent system were analyzed.The optimal formula of the plugging agent included as follows:35%of fly ash(Class B),3%of sodium bentonite as suspending agent,3%5%of Ca(OH)2 as curing agent,and 0.5%1%of retarder(accounting for fly ash).The experimental results showed that the curing time of the fly ash plugging agent is about 12 h and the curing strength is more than 1 MPa.This plugging agent meets the site construction requirements for water plugging in limestone oil reservoirs.

关 键 词：灰岩 堵水 粉煤灰 低成本堵剂 性能评价 

分 类 号：TE344[石油与天然气工程—油气田开发工程] TE39