| 锦州25—1区块探井钻井实践与认识 |
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| 引用本文： | 魏刚,;刘小刚,;陶林,;张春琳.锦州25—1区块探井钻井实践与认识[J].海洋地质译丛,2009(3):71-74. |
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| 作者姓名： | 魏刚 ;刘小刚 ;陶林 ;张春琳 |
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| 作者单位： | [1]中海石油能源发展有限公司监督监理技术公司,天津塘沽100010; [2]中海石油（中国）有限公司天津分公司钻井部,天津塘沽100010; [3]中海石油能源发展股份有限公司采油技术服务公司,天津塘沽100010 |
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| 摘 要： | 锦州25—1油田是渤海湾近年钻探发现的大型油田。锦州25—1区块先后钻了十多口探井，在钻井作业中遇到上部井眼扩大严重、井径不规则、井垮、起下钻遏阻卡、电测作业遏阻、电测井底沉砂较多、井漏等复杂情况。通过对锦州25—1区块前面几口探井钻井中出现的问题进行认真分析，研究了锦州25—1区块的地层压力剖面分布。经过不断的总结与措施改进后，在后面的探井钻井作业中做到了起下钻顺利，上部井径扩大率较小，未出现井垮情况，电测一次到底，钻井作业生产时间大幅度提高，为锦州25—1油田的生产井钻井积累了宝贵的经验。
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| 关 键 词： | 锦州25—1区块 探井 复杂情况 钻井实践 认识 |
Drilling practice and cognition of eXploration wells in JZ 25 - 1 block |
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| Institution: | Wei Gang, Liu Xiaogang, Tao Lin, Zhang Chunlin( 1. Supervision and Technology Co. of CNOOC Energy Technology ＆ Services Ltd. , Tanggu 100010; 2. Tianjin Branch Drilling Department of CNOOC Ltd. , Tanggu 100010 ;3. Oil field Technology Service Co. of CNOOC Energy Technology ＆ Services Ltd. , Tanggu 100010) |
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| Abstract: | JZ 25 - 1 oilfield is a great oilfield in Bohai Bay. There are over ten wells were drilled in JZ 25 -1 block in recent years, and many downhole problems such as top wellbore expansion, irregular well caliper, borehole collapse, tight pull, logging tool troubles, hole bottom sands, and circulation loss. Problems in exploration wells were analyzed and the formation pressure profile of JZ 25 - 1 block was researched on, problems had been tackled and top wellbore expansion rate was small in the following drilling wells, no borehole collapse, logging tool reached to the bottom easily, and working time of drilling procedure increased significantly which provided experience for the production well drilling in JZ 25 - 1 oilfield. |
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| Keywords: | JZ 25 - 1 block exploration well downhole problems drilling practice cognition |
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