页岩气油基钻井液体系性能评估及对策

王建华; 张家旗; 谢盛; 闫丽丽

doi:10.3969/j.issn.1001-5620.2019.05.005

页岩气油基钻井液体系性能评估及对策

doi: 10.3969/j.issn.1001-5620.2019.05.005

1. 中国石油集团工程技术研究院有限公司, 北京 102206;
2. 中国石油西南油气田公司勘探事业部, 成都 610041

基金项目:

中国石油天然气集团公司重大技术现场试验项目"深层页岩气水平井优快钻完井技术现场试验"（2019F-31）

详细信息

作者简介:
王建华,高级工程师,1981年生,主要从事钻井液与储层保护工作。电话(010)80162081;E-mail:wjhdri@cnpc.com.cn

中图分类号: TE254.3
计量
- 文章访问数: 906
- HTML全文浏览量: 258
- PDF下载量: 227
- 被引次数: 0
出版历程
- 收稿日期: 2019-05-26
- 刊出日期: 2019-10-30

Evaluation and Improvement of the Performance of Oil Base Drilling Fluids for Shale Gas Drilling

1. CNPC Engineering Technology R&D Company Limited, Beijing 102206;
2. PetroChina Southwest Oil & Gas feld Company Exploration Division, Chengdu, Sichuan 610041

摘要

摘要: 油基钻井液已成为开发页岩气水平井的关键技术之一，具有稳定井壁和保持井眼清洁的功能。通过评价中石油川渝地区油基钻井液体系的流变性、封堵性、固相含量和稳定性等性能，并结合这些井的井下复杂情况原因分析，得出封堵性是保持井壁稳定的关键，提高钻井液φ₆值和排量可以改善井眼清洁，有害低密度固相含量的增加是导致钻井液性能恶化的主要原因。针对井壁失稳、井眼清洁和性能维护等问题，建立了纳-微米封堵评价方法，确定了有害低密度固相含量计算方法，并形成了页岩气油基钻井液技术规范，有望为页岩气水平井的开发提供技术支持。
- 页岩气水平井 /
- 油基钻井液 /
- 封堵性 /
- 流变性
Abstract: As one of the key technologies in drilling horizontal shale gas wells, oil base drilling fluids are used to maintain the stability of borehole wall and to clean the hole. In this paper the rheology, plugging capacity, solids content and property stability etc. of the oil base drilling fluids used in PetroChina's Chuanyu development area are evaluated. From the evaluation and analyses of downhole troubles encountered in Chuanyu area it is concluded that plugging capacity of an oil base drilling fluid is the key in maintaining the stability of borehole wall. By increasing the φ₆ reading and flow rate of the drilling fluids, hole cleaning can be improved. Deterioration of the performance of a drilling fluid comes mainly from the increase of low-density solids content in the drilling fluid. To resolve problems encountered in maintaining borehole wall instability, hole cleaning and mud property maintenance, a method has been established to evaluate the plugging capacity of nanometer and micrometer particles. A method of calculating the content of harmful low-density solids in a drilling fluid is determined, and a set of technical norms for maintaining the properties of oil base drilling fluids for shale gas development is formed, hopefully will provide a technical support to shale gas development with horizontal drilling.
- Horizontal well for shale gas development /
- Oil base drilling fluid /
- Plugging capacity /
- Rheology

HTML全文

参考文献(9)

[1]	王中华. 页岩气水平井钻井液技术的难点及选用原则[J]. 中外能源, 2012, 17(4):43-47. WANG Zhonghua. Difficulties and applicable principles of drilling fluid technology of horizontal wells for shale gas[J]. Sino-Global Energy, 2012,17(4):43-47.
[2]	李茂森,刘政,胡嘉. 高密度油基钻井液在长宁——威远区块页岩气水平井中的应用[J]. 天然气勘探与开发,2017,40(1):88-92. LI Maosen,LIU Zheng,HU Jia.Application of highdensity oil-based drilling fluid in shale gas horizontal wells in Changning-Weiyuan area[J].Natural Gas Exploration and Development,2017,40(1):88-92.
[3]	何涛,李茂森,杨兰平,等. 油基钻井液在威远地区页岩气水平井中的应用[J]. 钻井液与完井液,2012, 29(3):1-5. HE Tao, LI Maosen, YANG Lanping, et al. Application of oil-based drilling fluid in shale gas horizontal wells in Weiyuan area[J].Drilling Fluids & Completion Fluid, 2012,29(3):1-5.
[4]	陈俊斌,李晓阳,舒小波,等. 川南龙马溪井壁失稳机理研究与应用[J]. 钻采工艺,2019,42(1):4-7. CHEN Junbin,LI Xiaoyang,SHU Xiaobo, et al. Research and application of instability mechanism of Longmaxi shaft wall in south Sichuan[J]. Drilling & Production Technology, 2019, 42(1):4-7.
[5]	赵海锋,王勇强,凡帆. 页岩气水平井强封堵油基钻井液技术[J]. 天然气技术与经济,2018,12(5):33-36 ,82. ZHAO Haifeng,WANG Yongqiang,FAN Fan. Strongly plugging oil-based drilling fluid technology for shale gas horizontal wells[J].Natural Gas Technology and Economy, 2018,12(5):33-36,82.
[6]	卢运虎,陈勉,安生. 页岩气井脆性页岩井壁裂缝扩展机理[J]. 石油钻探技术,2012,40(4):13-16. LU Yunhu,CHEN Mian,AN Sheng.The crack propagation mechanism of brittle shale wall in shale gas wells[J].Petroleum Drilling Techniques,2012,40(4):13-16.
[7]	陈光星, 冯炼, 赵薇. 浅谈钻井液固相含量测定方法的改进[J]. 吐哈油气, 2011(3):247-249. CHEN Guangxing,FENG Lian,ZHAO Wei. Discussion on improvement of measuring methods of solids content of drilling fluid[J]. Tuha Oil & Gas,2011 (3):247-249.
[8]	GA/T 1355-2018, 国家标准GB/T 28181-2016符合性测试规范[S]. GA/T 1355-2018, Specifications for compliance tests with national standard GB/T 28181-2016[S].
[9]	董悦, 盖姗姗, 李天太,等. 固相含量和密度对高密度钻井液流变性影响的实验研究[J]. 石油钻采工艺, 2008, 30(4):36-40. DONG Yue,GE Shanshan,LI Tiantai, et al. Experimental study on the effect of solid content and density of high density drilling fluid on its rheological properties[J].Oil Drilling & Production Technology, 2008, 30(4):36-40.