학술논문
玛北油田玛2井区水平井三开优快钻井技术 / High-quality and Fast Drilling Technology in Third Spud of Horizontal Wells in Wellblock Ma 2 of Mabei Oilfield
Document Type
Academic Journal
Author
Source
石油工业技术监督 / Technology Supervision in Petroleum Industry. 38(3):62-67
Subject
Language
Chinese
ISSN
1004-1346
Abstract
玛2井区水平井井身结构均为三开结构,主要开发T1b22(百口泉组二段第二层T1小层)致密砂砾岩油气资源.玛2井区三开施工主要难点是造斜段钻遇大段褐色泥岩,钻头优选困难,机械钻速低,褐色泥岩易吸水膨胀缩径,易坍塌失稳;三开密度窗口窄,水平段微裂缝发育,易发生井漏;水平段长,井眼清洁难度大.通过对玛2井区施工的同类型井进行全面分析总结,提炼出了一套优快钻井方法,显著改善了褐色泥岩井段的机械钻速,减少了井下复杂,提高了钻井速度.