LXC-005井胶质复合堵漏材料水泥浆堵漏技术  

PLUGGING TECHNOLOGY USING COLLOID COMPOSITE CEMENT SLURRY IN WELL LXC-005

作　　者：修留永[1] 贾平军[1] 高学生[1] 何瑞水[1] 吕军[2] 

机构地区：[1]大港油田集团公司钻井工程公司,天津大港300280 [2]大港油田公司油气开发事业部,天津大港300280

出　　处：《石油钻采工艺》2004年第5期32-34,共3页Oil Drilling & Production Technology

摘　　要：LXC - 0 0 5井在钻井、固井过程中陆续发生井漏 ,主要漏层为处于断裂带的煤层和漏失压力很低的砂层 ,先后用复合堵漏材料配成的复合堵漏钻井液和水泥堵漏 11次无效。针对砂层、煤层裂缝的严重漏失情况采用了混合法堵漏技术 ,先用复合堵漏钻井液堵漏架桥 ,然后应用复合堵漏钻井液与水泥混配而成的水泥浆即胶质复合堵漏材料水泥浆堵漏。该井应用胶质复合堵漏材料水泥浆堵漏技术堵漏 2次 ,取得了堵漏作业成功 ,为下套管、固井提供了一个稳定的井眼。下套管固井过程中未发生任何复杂情况 ,固井质量全优。实践证明 ,胶质复合堵漏材料 (大颗粒 )水泥浆适合于孔隙大的砂层和裂缝性煤层的堵漏作业。Lost circulations were continually encountered during drilling and cementing operations of well LXC-005, and the main lost zones are coal beds in the fracture belts and sand zones with extremely low leaking pressure. Eleven times of plugging operations were conducted using drilling fluid made from composite plugging materials and cement, but without any effect. A hybrid plugging technology is adopted, i.e., use the composite plugging drilling fluid for bridging firstly, and then plug with the colloid composite cement slurry made from composite plugging drilling fluid and cement. Two times of plugging operations were conducted using the colloid composite cement slurry, and the lost circulation zones were finally sealed off. A stable hole was achieved for running casing and cementing, and without any trouble encountered during casing and cementing. It has been proved that the colloid composite cement slurry is suitable for plugging the sandstone of large pores and fractured coal bed.

关 键 词：堵漏材料 水泥浆 钻井液 固井 堵漏技术 下套管 胶质 断裂带 砂层 漏失 

分 类 号：TE256[石油与天然气工程—油气井工程] TE28