超低摩阻水基钻井液在页岩气水平井的应用

周姗姗; 钟成兵; 刘杰; 代一钦; 许明标; 韩银府; 宋建建

doi:10.12358/j.issn.1001-5620.2022.03.008

超低摩阻水基钻井液在页岩气水平井的应用

doi: 10.12358/j.issn.1001-5620.2022.03.008

周姗姗^{1, 2,},
钟成兵³,
刘杰³,
代一钦³,
许明标^{1, 2, 4, ,},
韩银府⁵,
宋建建^{1, 2}

1.
长江大学石油工程学院, 武汉 430100
2.
油气钻采工程湖北省重点实验室，武汉 430100
3.
中石化江汉石油工程公司, 武汉 430000
4.
非常规油气省部共建协同创新中心, 武汉 430100
5.
荆州嘉华科技有限公司, 湖北荆州 434000

详细信息

作者简介:
周姗姗，博士，现在主要从事钻完井液技术研究工作。电话 15586001305；E-mail：zhoushanshan0712@163.com

通讯作者:
许明标，教授，主要从事钻完井液研究工作。E-mail：xumingbiao@yangtzeu.edu.cn

中图分类号: TE254.3
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出版历程
- 收稿日期: 2021-12-29
- 修回日期: 2022-02-21
- 网络出版日期: 2022-08-10
- 刊出日期: 2022-05-30

Application of Ultra-low Friction Wwater-based Ddrilling Ffluid in Shale Gas Horizontal Wells

ZHOU Shanshan^{1, 2
,},
ZHONG Chengbing³,
LIU Jie³,
DAI Yiqin³,
XU Mingbiao^{1, 2, 4
, ,},
HAN Yinfu⁵,
SONG Jianjian^{1, 2}

1.
College of Petroleum Engineering, Yangtze University, Wuhan, Hubei 430100
2.
Key Laboratory of Drilling and Production Engineering for Oil and Gas，Hubei Province，Wuhan, Hubei 430100
3.
Sinopec Jianghan Petroleum Engineering Company, Wuhan , Hubei 430000
4.
Collaborative Innovation Center for Unconventional Oil and Gas, Wuhan , Hubei 430100
5.
Jingzhou Jiahua Technology Co., LTD., Jingzhou, Hubei 434000

摘要

摘要: 油基钻井液具有优异的抑制性、封堵性、润滑性，是目前页岩气井作业的主要钻井液类型，但其对生态环境造成严重影响、过高的成本及废弃钻井液和钻屑处理压力限制了其在钻井中的应用。涪陵焦石部署4口水平井，钻探目的层为龙马溪组-五峰组，目的层含大段泥页岩，裂缝发育，易水化分散、垮塌漏失风险大。针对涪陵水平井要求低摩阻及地层泥页岩易发生井壁失稳的特点，研究了一套超低摩阻水基钻井液体系。该体系具有较好的流变和抑制性能，同时具有和油基钻井液相当的润滑性能。现场应用表明，超低摩阻水基钻井液实现了页岩气井水平段全流程高效安全作业，与同区块油基钻井液相比机械钻速提高了24.7%，每米钻时降低了6.2%，水平段起下钻1～2次，而油基钻井液需要2～3次，其中涪陵X4井水平段长2235 m，创完钻时国内页岩气水平井水基作业记录。该超低摩阻水基钻井液在涪陵页岩气的成功应用有望实现页岩气水基钻井液替代油基钻井液作业。
- 页岩气 /
- 水基钻井液 /
- 油基钻井液 /
- 机械钻速 /
- 现场应用
Abstract: Oil-based drilling fluid has excellent inhibition, blocking and lubrication properties, and it is currently the main type of drilling fluid for shale gas well operations. With the increasing pressure on environmental protection and waste mud disposal, shale gas drilling has put forward an urgent demand for water-based drilling fluid. Four horizontal wells are deployed in Fuling Jiao Shi, and the drilling target formation is Longmaxi Formation-Wufeng Formation. The target formation contains large sections of mud shale and fracture development, which is easy to hydrate and disperse, and has high risk of collapse and leakage. In response to the low friction requirement of the Fuling horizontal well and the vulnerability of the formation mud shale to well wall destabilization, an ultra-low friction water-based drilling fluid system was developed. The field application shows that the ultra-low friction water-based drilling fluid has achieved efficient and safe operation of the horizontal section of shale gas wells, with a 24.7% increase in mechanical drilling speed and a 6.2% reduction in drilling time per meter compared with oil-based drilling fluid in the same block. record. The successful application of this ultra-low friction water-based drilling fluid in Fuling shale gas is expected to realize the replacement of oil-based drilling fluid by water-based drilling fluid in shale gas.
- Shale gas /
- Water-based drilling fluid /
- Oil-based drilling fluid /
- ROP /
- Field application

HTML全文

图 1 超低摩阻水基钻井液现场消泡处理前后的情况

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图 2 超低摩阻水基钻井液作业井与同平台油基钻井液上提下放摩阻对比

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图 3 涪陵礁石作业井机械钻速对比

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图 4 涪陵X4井的井径曲线

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表 1 超低摩阻水基钻井液的基本性能

测试条件	φ₆/φ₃	AV/ mPa·s	PV/ mPa·s	YP/ Pa	FL_API/ mL	FL_HTHP/ mL	EP
老化前	5.5/4.0	31.0	22.0	9.0	2.2
140 ℃、16 h	4.5/3.0	37.5	27.0	10.5	2.2	8.0	0.051

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表 2 涪陵区块超低摩阻水基钻井液应用井工程情况

井号	中途完钻井深/m	完钻井深/m	裸眼段长/m	水平段长/m	四开钻井周期/d
X1	2113	3983	1870	1397	14.0
X2	2182	4052	1870	1507	15.6
X3	2585	4917	2332	1603	28.0
X4	2706	5724	3018	2235	28.1

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表 3 超低摩阻水基钻井液在X4井中的性能

井深/ m	FV/ s	PV/ mPa·s	YP/ Pa	Gel/ Pa/Pa	φ₆	φ₃	FL_HTHP/ mL
2990	47	19.0	10.0	2.0/4.0	6.0	5.0	7.8
3400	48	24.0	9.0	2.0/4.0	5.0	4.0	7.6
4330	52	28.0	12.0	4.0/7.0	8.0	7.0	7.6
5200	54	29.0	12.0	3.5/7.0	10.0	9.0	7.6
5724	56	33.0	13.0	4.0/8.0	11.0	10.0	7.4

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表 4 涪陵新型水基钻井液与邻井钻井液的性能对比

钻井液	AV/ mPa·s	PV/ mPa·s	YP/ Pa	φ₆	φ₃	pH	FL_API/ mL	FL_HTHP/ mL
新型水基	49.0	35.0	14.0	7.0	5.0	9	1.8	6.0
油基	39.0	31.0	8.0	9.0	8.0		0	2.4
钾基聚合物	42.0	39.0	13.0	8.0	7.0	9	2.4	8.2

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表 5 涪陵作业井与邻井油基钻井液工程参数对比

钻井液	钻压/t	转速/（r·min^-1）	泵压/MPa	排量/（L·s⁻¹）	下放摩阻/t	平均机械钻速/（m·h⁻¹）	起下钻/次	平均每米钻时/h
超低摩阻水基	8～10	50	16～20	30	3～9	12.02	1～2	0.305
油基	10～14	50	22～24	30	6～22	9.64	2～3	0.325

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