三级固井技术在塔里木油田超深水平井中的应用  

Application of triple cementing technique for ultra-deep horizontal wells in Tarimu Oilfield

作　　者：盛勇[1] 李桂方 李飞[1] 黎强[1] 任自伟[1] 

机构地区：[1]塔里木油田公司开发事业部,新疆库尔勒841000

出　　处：《石油钻采工艺》2009年第S2期27-28,31,共3页Oil Drilling & Production Technology

摘　　要：塔里木轮南侏罗三叠系油藏经多年开发后,压力降低,成为低压渗透层,压力系数1.15～1.18,钻井液密度超过1.2 g/cm^3就会出现渗漏。完井技术套管裸眼段长,套管串与井壁间环空间隙小,循环阻力大,水泥浆密度高(平均在1.85～1.90 g/cm^3),液柱压力大,固井施工泵压高,致使水泥浆在低压渗透的储集层段漏失,从而影响了固井质量,污染了油层,给完井后井下作业造成极大的难度。因此决定在国内率先采用三级固井技术试验并获得成功。After many years of production,Jurassic-Triassic reservoir in Lunnan of Tarimu becomes a low permeability layer with a pressure coefficient of 1.15-1.18.Leakage will happen once the drilling fluid density is more than 1.20 g/cm^3.Because of problems such as long open hole completion casing length,small gap between casing string and hole wall,large circulation resistance,high slurry density(1.85-1.90 g/cm^3 in average),big liquid column pressure,high cementing pump pressure, leakage is easy to happen in low pressure section,which affects the cementing quality,pollutes the reservoir and leaves a great difficulty to downhole operation after the completion.Therefore,the development industry became the first domestic in using triple cementing technique and achieved success.

关 键 词：塔里木 水平井 三级固井 技术 

分 类 号：TE256.6[石油与天然气工程—油气井工程]