塔里木油田大尺寸深井干法固井技术研究  

STUDY ON DRY WELL CEMENTING TECHNOLOGY USED IN TARIM OILFIELD LARGE SIZE DEEP WELL

作　　者：王延民[1] 李晓春[1] 周玉良[1] 李皋[2,3] 

机构地区：[1]中国石油塔里木油田分公司 [2]西南石油大学"油气藏地质及开发工程"国家重点实验室 [3]西南石油大学

出　　处：《钻采工艺》2015年第1期22-24,1-2,共3页Drilling & Production Technology

基　　金：国家重大科技专项大型油气田及煤层气开发"塔里木盆地库车前陆冲断带油气开发示范工程"(2011ZX05046)部分研究内容

摘　　要：空气钻井后常将空气转换为钻井液,但这容易出现井壁不稳定、垮塌、漏失等现象,井壁易形成巨厚虚滤饼致下套管困难和固井质量差,此外,大尺寸套管常规固井还存在顶替效率较差的情况,以上因素最终导致固井准备时间长和固井质量难以保证。为配合空气钻井技术,进一步节约钻井周期和钻井成本,解决大尺寸套管固井存在顶替效率较差的情况,空气钻井后采用了干法固井工艺,并根据塔里木油田干法固井尺寸大、井深的技术难点与井下状态,研究建立了干法固井水泥浆实验评价方法,对干法固井下水泥浆性能进行评价和优选,最终干法固井取得了成功,套管重量达568 t,固井深度达3 602 m,分别刷新了干法固井的深度及下套管重量。The air is replaced into mud after air drilling,it is easy to cause sidewall instability,collapse and leakage,and the thick mud cake is easy to be formed,which will cause running casing difficulties and poor cementing quality. The displacement efficiency is also low in conventional cementing of large size casing. To save the drilling cycle and cost,and solve the low displacement efficiency of large size casing cementing,the dry well cementing technology was adopted after the air drilling. According to the size and depth of the hole during the dry well cementing,slurry experimental evaluation method of dry well cementing have been established,and the cement slurry suited for dry well cementing was optimized and its performance was also evaluated. Finally,the dry well cementing technology has been applied successfully in Tarim Oilfield large size deep well. The weight of casing was high up to 568 t,the depth of cementing achieved 3601 m,which refreshed the depth and the casing weight of the cementing technology in empty hole.

关 键 词：干法固井 空气钻井 空井下套管 

分 类 号：TE256[石油与天然气工程—油气井工程]