Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field

Cao Huaqing; Gao Changbin

doi:10.13809/j.cnki.cn32-1825/te.2018.02.015

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Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field

更新时间：2025-12-05

- Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field
- Petroleum Reservoir Evaluation and Development Issue 2, Pages: 80-84(2018)
- 作者机构：
  
  中国石化华东石油工程公司六普钻井公司
- 作者简介：
- 基金信息：
- DOI：10.13809/j.cnki.cn32-1825/te.2018.02.015
  CLC： TE244
- Published：2018
- 稿件说明：
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[1]曹华庆,高长斌.非常规龙马溪组和牛蹄塘组页岩取心技术[J].油气藏评价与开发,2018,8(02):80-84.

Cao Huaqing, Gao Changbin. Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field[J]. Petroleum Reservoir Evaluation and Development, 2018, (2): 80-84.
[1]曹华庆,高长斌.非常规龙马溪组和牛蹄塘组页岩取心技术[J].油气藏评价与开发,2018,8(02):80-84. DOI： 10.13809/j.cnki.cn32-1825/te.2018.02.015.

Cao Huaqing, Gao Changbin. Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field[J]. Petroleum Reservoir Evaluation and Development, 2018, (2): 80-84. DOI： 10.13809/j.cnki.cn32-1825/te.2018.02.015.

摘要

页岩气井钻探过程中获取高质量的岩心样本是进行储层评价的重要前提。针对我国南方页岩气井目的层取心进尺长、收获率低和常规取心工艺效率差等难题

在分析取心层位地质特点的基础上

开展了取心工具、取心钻头、取心参数及取心工艺等方面的优化和改进。通过多口页岩气井牛蹄塘和龙马溪组的取心实践

平均取心收获率大于98%

最高机械钻速达到9 m/h。现场应用表明

该技术能有效提高取心收获率和机械钻速

成功解决了页岩气井中取心施工存在的各种问题

同时也为页岩气井的后期开发提供了重要支持。

Abstract

During the drilling process of the shale gas wells

obtaining the high quality core samples is an important prerequisite for the reservoir evaluation. Aiming at the problems such as the long coring footage

the low core recovery and the poor efficiency of the conventional coring technology

and based on the analysis of the geological characteristics of the coring layer

we optimized and improved the tools

the bit

the parameters and the technology. In the field application of the multiple shale gas wells

the average core recovery was more than 98% and the penetration rate was up to 9m/h. The results showed that this technology had wonderful performance in improving the core recovery and the penetration rate

and successfully resolved the various problems in the process of the coring in the shale gas wells. In the meantime it provided important support for the later development of the shale gas wells.

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references

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