| 页岩气调查泉参1井大口径同径取心钻进工艺 |
| 投稿时间：2018-06-20 修订日期：2019-02-27 点此下载全文 |
| 引用本文：熊虎林,张飞,甘辉敏,等.页岩气调查泉参1井大口径同径取心钻进工艺[J].钻探工程,2019,46(6):19-25.XIONG Hulin,ZHANG Fei,GAN Huimin,et al. Coring technique for shale gas survey Quancan Well-1[J]. Drilling Engineering, 2019,46(6):19-25. |
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| 中文摘要:页岩气调查参数井——泉参1井页岩气目的层具有硬度高、脆性大等特点，可钻性级值高，平均为6.15；取心钻进时存在机械钻速低、回次进尺少、岩心采取率较低等问题。本文在泉参1井工程实践基础上，总结大口径钻井同径取心钻进经验。采用转盘+螺杆复合钻进方式，钻进过程中合理调整钻进参数，有针对性地选择取心钻头、配套取心钻具，增加回次进尺长度，满足取样测试相关要求，提高取心钻进效率。 |
| 中文关键词:页岩气调查 页岩气参数井 取心工艺 复合钻进 大口径同径取心 |
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| Coring technique for shale gas survey Quancan Well-1 |
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| Abstract:Shale gas formation is characterized by high hardness, high brittleness, high drillability, leading to low PRM, less footage per run and low core recovery. Based on the field practice of Quancan Well-1, this paper sums up the experience of large diameter one-pass well coring and completion. In the process of drilling, the drilling parameters were adjusted reasonably, and the core drill bit and coring accessories were specifically selected with the coring run increased to meet the relevant requirements of the sampling test. The core drilling efficiency was improved by combining rotary table + PDM drilling, and the drilling cost was reduced by a certain extent. |
| keywords:shale gas survey shale gas parameter well coring technology compound drilling conventional coring |
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