连通盐井饱和盐水钻井液技术  

Saturated Salt Mud Technology in Connection Salt Wells

作　　者：何振奎[1] 蒋建宁[1] 景国安[1] 邱建君[1] 张庆良[1] 魏春禺[1] 张道慈[2] 

机构地区：[1]河南油田分公司石油工程技术研究院 [2]河南油田分公司石油勘探开发研究院

出　　处：《钻井液与完井液》2006年第5期74-77,90,共5页Drilling Fluid & Completion Fluid

摘　　要：采用连通井开发地下盐,即在盐层段进行水平钻井,钻井液技术更显得重要。针对舞阳、叶县地区泥页岩吸水膨胀、缩径、坍塌、盐膏层段盐溶问题,研究出了一套以抗盐聚合物A为主剂,适应于连通盐井钻井的饱和盐水钻井液。对该钻井液配方的优选及性能评价表明,饱和盐水钻井液流变性好,滤失量低,抗污染能力强,有利于井壁稳定。现场应用表明,饱和盐水钻井液能抑制盐层溶解、泥页岩水化膨胀缩径和砂岩段形成厚泥饼,利于水平井井眼轨迹控制;并且抗盐能力强,抑制效果好,携带能力强,有利于水平井岩屑床的清扫,解决了因井径扩大导致起下钻遇阻卡、事故频发、主力开发盐层捞不到盐样、水平段井眼轨迹不易控制及固井质量差等问题,压裂连通成功。The drilling fluid used in producing salt in connection wells is a key technology to the success of the drilling operation. Drilling problems such as shale swelling, tight hole, borehole sloughing, and salt solution into the mud in salt formations, occurred frequently in the drilling activity in Wuyang and Ye counties in Henan Province. Based on lab research, a new saturated salt mud, with the fluid-loss agent, A, being the main additive, was developed to combat these drilling problems. The lab research sho...

关 键 词：饱和盐水钻井液 抑制性 井眼稳定 井眼清洁 连通盐井 

分 类 号：TE254.3[石油与天然气工程—油气井工程]