雷公油田打调整井过程中油层保护技术  

Reservoir protection technology in adjustment wells of Leigong oil field

作　　者：吴志均[1] 汪建军[1] 段永刚[1] 

机构地区：[1]西南石油学院油井完井技术中心

出　　处：《钻井液与完井液》1997年第2期29-31,共3页Drilling Fluid & Completion Fluid

摘　　要：针对雷公油田打调整井过程中地层损害的问题,分析了该区常用钻井液造成地层损害的原因,提出用屏蔽暂堵技术改造钻井液,即在原钻井液中加入QS-2和FT-1分别做架桥粒子和填充软粒子。经室内试验和现场10口井应用表明,改造后的钻井液体系与钻井工艺相容性好,易在近井壁形成致密的屏蔽带,起到保护油气层的作用。Shielding temporary sealing technology was applied to solve the formation damage problems in the drilling operation in adjustment wells of Leigong oil field. Tests indicate that good temporary sealing result was achieved by adding the suitable plugging a-gents(3%QS-2 and 2%FT-1) and adjusting the positive pressure differential to 3. 5MPa. It is shown that this shielding temporary sealing technology compatible with drilling fluid technology can protect reservoir effectively.

关 键 词：调整井 水基钻井液 地层损害 封堵完井液 油田 

分 类 号：TE254[石油与天然气工程—油气井工程] TE258