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요약정보
深水地层钻井液密度安全窗口确定方法研究
Resource Type
Academic Journal
Authors
幸雪松
;
周长所
;
朱海燕
;
曹文科
Source
中国石油和化工标准与质量 / China Petroleum and Chemical Standard and Quality
. 43(14):143-148
Subject
深水
井壁稳定
坍塌压力
破裂压力
失稳风险
Language
Chinese
ISSN
1673-4076
Online Access
Full Text (CAJ - 경제/경영)
초록
深水地层地应力整体偏低,钻井液密度安全窗口窄,钻井过程中易发生漏失等复杂情况.开展岩石强度实验测试了深水地层岩石力学参数,砂泥岩均表现出低强度、低弹性模量和高泊松比的特点;受井周应力状态影响,深水直井随井深增加,井壁破裂形式依次为水平缝和垂直缝;深水定向井沿水平最小地应力方位钻进安全窗口最大,但其破裂压力仍以上覆岩层压力为上限.利用该模型结合南海某深水井进行实例分析,表明了本文井壁稳定性分析方法的合理性,可为深水井眼钻井施工设计提供技术支持.
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