摘要
川东北地区大部分采用气体钻进的井段为上部地层,主要岩性为泥页岩,气体钻进后替入水基钻井液,经常发生复杂情况。分析了气体钻进后顶替钻井液初期容易发生井塌、井漏等复杂情况的原因,介绍了解决川东北地区气体钻进后井壁失稳的钻井液技术对策、技术方案及防止井壁失稳的钻井液工艺技术。在七北101井、东升1井现场应用证明,该工艺技术可行,解决了气体钻进后井壁失稳、严重井漏的技术问题。
The formations of the upper intervals of most oil and gas wells in north eastern Sichuan weremudstones/shales. After drilling the upper intervals with gas/air, water base muds were used to drill thelower parts of the holes, leading to a series downhole problems such as hole instability and mud losses. Anintegrated drilling fluid technology dealing with these downhole problems was introduced in this article,based on the diagnosis on the problems, which most often took place immediately after displacing the g...
出处
《钻井液与完井液》
CAS
北大核心
2006年第5期18-20,83,共4页
Drilling Fluid & Completion Fluid
关键词
川东北地区
气体钻井
替浆
井眼稳定
井漏
Northeastern Sichuan area
gas/air drilling
mud displacement
hole stability
mud losses
