| 仙西2井漏失性质分析及堵漏方式探讨 |
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| 引用本文： | 熊战,王合林,张民立,钟德华,何勇波,李广冀. 仙西2井漏失性质分析及堵漏方式探讨[J]. 钻井液与完井液, 2020, 37(3): 319-326. DOI: 10.3969/j.issn.1001-5620.2020.03.009 |
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| 作者姓名： | 熊战 王合林 张民立 钟德华 何勇波 李广冀 |
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| 作者单位： | 1. 渤海钻探工程有限公司第二钻井分公司, 河北廊坊 065007; |
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| 摘 要： | 青海油田仙西2井,三开井漏严重,堵漏困难,累计发生18次井漏复杂及2次与堵漏作业有关的卡钻事故,漏失钻井液5182.45 m3,严重制约钻井速度。由于继续施工风险大,经综合评估后决定封井缓打。通过对本井地层漏失性质、应用的桥接堵漏、固结堵漏、平衡穿漏、封固水层等堵漏施工情况分析,总结堵漏经验教训和施工经验,为以后该区块及类似地区安全、快速钻井施工提供可行的技术思路。
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| 关 键 词： | 青海油田 井漏 堵漏 影响因素 思路 |
| 收稿时间： | 2020-02-15 |
Mud Losses in Well Xianxi-2: Characteristics and Control |
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| Affiliation: | 1. NO.2 Drilling Engineering Company, BHDC, Langfang, Hebei 065007;2. CNPC Bohai Drilling Engineering Company Limited, Tianjin 300457;3. Mud Service Company, BHDC, Tianjin 300280 |
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| Abstract: | The third interval of well Xianxi-2 has found serious mud losses during drilling which is difficult to control.Totally 5182.45 m3 of drilling fluids were lost in 18 times of mud losses. Two times of pipe sticking were encountered during mud loss control. Drilling operation was badly hindered because of these downhole troubles. The well was temporarily abandoned after comprehensive evaluation of the risks in drilling ahead.By analyzing the mud loss behavior as well as the mud loss control techniques adopted, such as mud loss control with bridging method,solidification method, drilling through loss zones with balance, and sealing of water zones, and by summarizing the experiences and teachings obtained in the operation, a set of feasible technical clues for safe and fast drilling operation in this block and the like was presented. |
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