| 苏77-5-8H井大斜度穿煤层安全钻井技术 |
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| 引用本文： | 柯学,李继营,池崇荣,刘志良. 苏77-5-8H井大斜度穿煤层安全钻井技术[J]. 探矿工程(岩土钻掘工程), 2011, 38(12): 13-17 |
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| 作者姓名： | 柯学 李继营 池崇荣 刘志良 |
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| 作者单位： | 中国石油西部钻探钻井工程技术研究院,中国石油西部钻探定向井技术服务公司,中国石油西部钻探苏里格气田开发第一项目经理部,中国石油西部钻探钻井工程技术研究院 |
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| 摘 要： | 苏77-5-8H井为苏里格气田苏77区块第一口利用水平井提高山23组开发效益的大斜度穿煤层水平井,目的层山23储集砂岩上部发育厚度25～30 m的碳质泥岩和煤层段,由于煤系地层的特殊性,钻进过程中易坍塌,且煤系地层正好处于入靶前的造斜井段,钻井施工难度大、风险高。在分析了煤层井壁稳定机理基础上,针对苏77区块地层特性和水平井钻井施工的难点,分析了该井主要技术难点,重点从井眼轨迹轨道设计优化、轨迹控制及施工技术措施和钻井液技术等方面对该井安全技术进行了全面的介绍,为今后同类井钻井提供可参考的经验。
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| 关 键 词： | 煤层 坍塌 井眼轨迹控制 安全钻井技术 钻井液 封堵防塌 抑制性 苏里格气田 |
Safety Drilling Technology of Crossing Coal Seam with High-inclination in SU77-5-8H Well |
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| KE Xue,LI Ji-ying,CHI Chong-rong and LIU Zhi-liang. Safety Drilling Technology of Crossing Coal Seam with High-inclination in SU77-5-8H Well[J]. Exploration Engineering （Rock & Soil Drilling and Tunneling）, 2011, 38(12): 13-17 |
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| Authors: | KE Xue LI Ji-ying CHI Chong-rong LIU Zhi-liang |
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| Affiliation: | China Petroleum Western Drilling Engineering Institute,China Petroleum Western Directional Drilling Technology Services Company,1st Project Manager Department of China Petroleum Western Drilling Sulige Gas Field Development,China Petroleum Western Drilling Engineering Institute |
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| Abstract: | SU77-5-8H is the first horizontal well crossing coal seam with high-inclination,by which development benefit was promoted for Shansi group23 in Su77 block of Sulige gas field.The upper part of target bed(Shanxi23) is structured by carbonaceous mudstone and cola seam in the thickness of 20~30 meters.Because of the specialty of coal-bearing stratum,collapsing occurs easily in drilling process,and this coal-bearing stratum is in deviation building section in front of target point with big construction difficul... |
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| Keywords: | Safety Drilling Technology of Crossing Coal Seam with High-inclination in SU77-5-8H Well |
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