巴麦地区固井技术难点与针对性措施  

Technical difficulties and specific measures of cementing in the Bachu-MaigaitiArea

作　　者：常连玉[1,2] 高元[2] 许建华[2] 杨广国[2] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石化石油工程技术研究院,北京100101

出　　处：《石油钻采工艺》2013年第3期37-41,共5页Oil Drilling & Production Technology

基　　金：中国石油化工集团石油工程管理部项目"巴麦地区防窜防漏固井技术先导试验"(编号:JSG11017)

摘　　要：巴麦地区地质条件复杂，普遍存在低压易漏、异常高压、大段盐膏层和高压盐水层等地层。针对该地区固井技术难点，研制了性能优良的堵漏隔离液体系、密度1．20-1．45g／cm^3的低密度水泥浆体系、密度2．60～3．00g／cm^3的高密度抗盐水泥浆体系，并对该地区低压易漏层固井防漏技术、异常高压层高密度固井技术、盐膏层和高压盐水层固井专封技术等进行了完善与优化，形成了一系列效果良好的技术措施。玛北1、PSBl等井的现场应用结果表明，该技术有效地解决了该区块的固井难题，提高了巴麦地区探井的固井质量。Since the complicated geological conditions in Bachu-Maigaiti Block, where low-pressure thief layers, abnormal high- pressure formation, long section salt beds and high-pressure brine formations were wildly distributed, and easily led to poor cementing quality. In view of technical difficulties of cementing in this area, excellent performance plugging isolation fluid system, ultra-low density slurry system with density of 1.20-1.45 g/cm^3, and 2.60-3.00 g/cm^3 ultra-high density salt tolerant slurry system were researched. leak protection technology of low-pressure thief layer cementing, ultra-high density cementing technology of ultra-high pressure zone, and special cementing technology of salt beds and high-pressure brine formations were improved and optimized, which formed series of technical measures and achieved good effects. The field application results in Well Mabeil and Well PSB 1 show that difficult cementing problems of low-pressure thief layers, abnormal high pressure layers and ultra-high pressure salt-water formation were solved effectively, and exploration well cementing quality were improved in Bachu-Maigaiti area.

关 键 词：固井 防漏堵漏 异常高压层 盐膏层 水泥浆 巴麦地区 

分 类 号：TE256[石油与天然气工程—油气井工程]