| 桂中坳陷页岩气地质调查桂柳地1井钻井技术 |
| 投稿时间：2022-03-14 修订日期：2022-06-26 点此下载全文 |
| 引用本文：李明星,蒙学礼,王嘉瑶,等.桂中坳陷页岩气地质调查桂柳地1井钻井技术[J].钻探工程,2022,49(5):64-71.LI Mingxing,MENG Xueli,WANG Jiayao,et al. Drilling technology of Well Guiliudi-1 for shale gas geological survey in Guizhong depression[J]. Drilling Engineering, 2022,49(5):64-71. |
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| 基金项目:广西找矿突破战略行动地质矿产勘查项目“广西柳州市雒容页岩气有利目标区地质调查” |
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| 中文摘要:为查明柳州东部雒容有利区下石炭统鹿寨组的岩性、沉积相及富有机质有效泥（页）厚度、含气性，获取富有机质泥页岩段的页岩气相关参数，广西壮族自治区国土资源厅在桂中坳陷部署了一口小口径页岩气地质调查井——桂柳地1井。通过选用HXY-8B型岩心钻机、采用直井多开次钻探方法，分层钻进；利用前导向扩孔钻具分级扩孔，逐级下套管；配合PVA1788无固相冲洗液体系；同步开展录井、测井、固井及钻井评价等配套工作，解决了深孔泥岩中钻进取心困难、井壁稳定性差、钻孔弯曲度超标等施工难题。该井钻井技术可为该地区石炭系鹿寨组泥页岩钻探提供有益经验。 |
| 中文关键词:页岩气地质调查 页岩气井 钻井技术 PVA1788无固相冲洗液体系 桂柳地1井 桂中坳陷 |
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| Drilling technology of Well Guiliudi-1 for shale gas geological survey in Guizhong depression |
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| Abstract:In order to find out the lithology， sedimentary facies， thickness of organic rich effective mud （shale） and gas bearing property of the lower Carboniferous Luzhai formation in the Luorong favorable area in the east of Liuzhou， and obtain the relevant parameters of shale gas in the organic rich mud shale section， the Department of Land and Resources of Guangxi Zhuang Autonomous Region deployed a small-diameter geological survey well—Well Guiliudi-1 in Guizhong depression. With use of HXY-8B core drill and the multiple-section vertical drilling method， the well was drilled layer by layer； the pilot type reaming tool， together with the PVA1788 solid free flushing fluid system was used to ream the hole step by step with the casing set tier by tier， meanwhile， geological logging， electrical logging， cementing and drilling evaluation was carried out； which solved the drilling difficulties in deep mud stone， such as difficult coring， poor wellbore stability， over curvature of the borehole. The drilling technology can provide useful experience for shale drilling in the Carboniferous Luzhai formation in the area. |
| keywords:shale gas geological survey shale gas well drilling technology PVA1788 solid-free flushing fluid Well Guiliudi-1 Guizhong depression |
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