| 页岩气地质调查井小口径绳索取心钻探技术分析 |
| 投稿时间：2022-06-08 修订日期：2022-07-29 点此下载全文 |
| 引用本文：张强,战启帅,张文良,等.页岩气地质调查井小口径绳索取心钻探技术分析[J].钻探工程,2022,49(5):72-79.ZHANG Qiang,ZHAN Qishuai,ZHANG Wenliang,et al. Application of small diameter wire-line core drilling in shale gas geological wells[J]. Drilling Engineering, 2022,49(5):72-79. |
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| 中文摘要:小口径绳索取心钻探技术在页岩气地质调查井中具有不可替代的优势，同时也存在较大的局限性。结合小口径绳索取心工艺在10余口页岩气调查井的应用情况，从地质条件、技术要求、设备及配套机具等方面归纳总结了施工中的难点，从井身结构、设备配置、取心工艺、泥浆体系、复杂情况预防等方面提出了优化方案。依据优化后的施工技术措施，在后续施工的页岩气调查井中取得了良好的效果，岩心采取率保持在97%以上，台月进尺超过了400 m，复杂发生频次控制在2次以下。对下一步小口径页岩气调查井施工具有一定的借鉴意义。 |
| 中文关键词:页岩气地质调查 页岩气井 小口径钻探 绳索取心钻探 井身结构 |
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| Application of small diameter wire-line core drilling in shale gas geological wells |
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| Abstract:Small diameter wire-line coring has irreplaceable advantages in shale gas geological survey wells， but also has major limitations. In regard to the application of small diameter wire-line coring technology in more than 10 shale gas investigation wells， this paper sums up the difficulties from geological condition， technical requirements， equipment， and supporting equipment， and put forward the optimization scheme from the aspects of wellbore structures， equipment configuration， coring technology， mud system and incident prevention. With the optimized drilling measures， good results have been achieved in the following shale gas investigation wells with the core recovery rate above 97%， the rig-month footage exceeding 400m， and the incident frequency below 2 times. It can be used as reference for drilling of future small-diameter shale gas investigation wells. |
| keywords:shale gas geological survey shale gas wells small diameter drilling wire-line coring wellbore structure |
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