| 九龙山某井气体钻井技术及事故处理实践 |
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| 引用本文： | 邓昌松,练章华,郑建翔,林铁军,王磊.九龙山某井气体钻井技术及事故处理实践[J].探矿工程,2011,38(10):23-25,29. |
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| 作者姓名： | 邓昌松 练章华 郑建翔 林铁军 王磊 |
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| 作者单位： | 西南石油大学油气藏地质与开发国家重点实验室,四川成都610500 |
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| 摘 要： | 九龙山地区上部地层存在井漏、垮塌的可能,中部地层研磨性强、可钻性极差,下部地层存在多产层多压力系统并可能会钻遇异常高压。为了应对异常情况、缩短钻井周期、节约处理成本,龙某井设计从350～2000 m使用气体钻井。空气钻井钻至1170.28 m后地层出气,甲烷浓度超过6%,后改用氮气钻进,钻至1868 m时出现井壁垮塌和钻具阻卡,随后停止气体钻进。记录了钻进过程中返出主要气体的浓度变化情况和异常情况处理措施,实践表明,气体钻井在防止井漏、钻遇地层出气（不含H2S）、异常压力等复杂情况具有常规钻井无法比拟的优势。
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| 关 键 词： | 气体钻井 地层出气 井漏 异常压力 |
| 收稿时间： | 2011/2/23 0:00:00 |
| 修稿时间： | 2011/7/7 0:00:00 |
Gas Drilling Technology in a Well and the Practice of Accident Treatment |
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| DENG Chang-song,LIAN Zhang-hu,ZHENG Jian-xiang,LIN Tie-jun and WANG Lei.Gas Drilling Technology in a Well and the Practice of Accident Treatment[J].Exploration Engineering(Drilling & Tunneling),2011,38(10):23-25,29. |
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| Authors: | DENG Chang-song LIAN Zhang-hu ZHENG Jian-xiang LIN Tie-jun and WANG Lei |
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| Institution: | (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu Sichuan 610500,China) |
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| Abstract: | There is possibility of circulation loss and collapse in the upper stratum of Jiulongshan region,strong abrasivity and extremely poor drillability in the middle stratum,and multiple field and pressure system in the lower stratum.In order to cope with the abnormal situation,this well is designed to use gas drilling.The stratum is gassing when air drilling was dilled to 1170.28m.Then switch to nitrogen drilling,but when drilled to 1868m,it is wellface collapsed and drill stem blocked and sticking.At last it must finish the gas drilling.The paper records a main gas concentration changes and the handing measures of the abnormal condition during the drilling process,and provides some experiences to gas drilling crews dealing with abnormal condition.In conclusion,gas drilling have more advantage than conventional drilling in preventing circulation loss,stratum gassing without H2S,and abnormal pressure. |
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| Keywords: | gas drilling accident processing stratum gassing |
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