元深1井超深井钻井提速关键技术

高航献; 李真祥; 胡彦峰

doi:10.11911/syztjs.2024054

元深1井超深井钻井提速关键技术

1.
中国石化勘探分公司, 四川成都 610041
2.
中石化石油工程技术研究院有限公司, 北京 102206

基金项目: 中国石化重大科技攻关项目“特深层油气钻完井关键技术与装备”之课题“四川盆地特深层钻完井技术配套与示范应用”(编号：P21081-7)资助。

详细信息

作者简介:
高航献（1972—），男，河南南阳人，1996年毕业于石油大学（华东）应用化学专业，高级工程师，主要从事石油钻井技术研究及管理工作。E-mail:gaohx.ktnf@sinopec.com

通讯作者:
胡彦峰，huyf.sripe@sinopec.com

中图分类号: TE245
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出版历程
- 收稿日期: 2023-11-19
- 修回日期: 2024-03-02
- 录用日期: 2024-05-08
- 网络出版日期: 2024-05-10
- 刊出日期: 2024-05-24

Key Drilling Technologies for Increasing ROP in Ultra-Deep Well Yuanshen 1

1.
Sinopec Exploration Company, Chengdu, Sichuan, 610041, China
2.
Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing, 102206, China

摘要

摘要:
元深1井是部署在川北低缓构造带上的重点探井，钻井过程中面临地层压力体系复杂、井眼易坍塌、钻井液易漏失、陆相地层研磨性强、井控风险高等技术难题。根据地质特征，借鉴邻井钻井经验，应用泡沫钻井技术，提高浅部地层大尺寸井眼机械钻速；应用“涡轮钻具+孕镶金刚石钻头”和“旋冲钻具+混合式钻头”提速技术，解决陆相高研磨性地层机械钻速低的难题；应用耐高温防漏堵漏钻井液，配套“高效PDC钻头+大扭矩螺杆”提速技术，实现海相多压力体系复杂地层安全快速钻进；用微心PDC钻头钻进目的层，在满足岩屑录井需要的同时，提高了钻井效率。该井顺利钻至井深8 866.00 m完钻，创中国石化四川盆地直井井深最深纪录，为四川盆地超深井钻井积累了经验。
- 超深井 /
- 深井钻井 /
- 机械钻速 /
- 元深1井 /
- 元坝气田
Abstract:
Well Yuanshen 1 is a key exploration well located in the gentle structural belt of northern Sichuan. The drilling process encountered several technical challenges, including complex formation pressure systems, borehole collapse, drilling fluid loss, strong terrestrial formation abrasiveness, and high risk of well control, etc. Based on the geological characteristics and drilling experiences of adjacent wells, a series of drilling technologies were implemented to increase the rate of penetration (ROP). Foam drilling technology was utilized to improve the ROP in large boreholes within shallow formations. For the highly abrasive terrestrial formations, the technologies of “turbodrill+impregnated diamond bit”and“rotary percussion drilling rig+hybrid drilling bit”were employed to enhance ROP. The combination of high-temperature, leak-proof drilling fluid with “high-efficiency polycrystalline diamond compact (PDC) bit+high torque screw” technology enabled safe and rapid drilling in the complex formations of the marine multi-pressure system. The microcore PDC bit was used to drill into the target zone, enhancing drilling efficiency while meeting the needs of cuttings logging. The well was successfully drilled to a depth of 8 866.00 meters, setting a Sinopec’s record for the deepest vertical well in the Sichuan Basin. This achievement provided technical experience for ultra-deep well drilling in the Sichuan Basin.
- ultra-deep well /
- deep well drilling /
- rate of penetration /
- Well Yuanshen 1 /
- Yuanba Gas Field

HTML全文

图 1 元深1井设计井身结构

Figure 1. Designed casing program of Well Yuanshen 1

下载: 全尺寸图片幻灯片

图 2 AX616 型PDC钻头冠部结构

Figure 2. AX616 PDC bit crown structure

下载: 全尺寸图片幻灯片

图 3 元深1井与邻井的陆相硬地层机械钻速对比

Figure 3. Comparison of ROP in hard terrestrial formation of Well Yuanshen 1 and adjacent wells

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表 1 元深1井泡沫钻井提速效果统计结果

Table 1 Statistics of foam drilling effect for increasing ROP in Well Yuanshen 1

钻井方式	钻进井段/m	进尺/m	纯钻时间/h	平均机械钻速/( m·h⁻¹)
泡沫钻井	0～300.00	300.00	66.0	4.55
	300.00～1176.00	871.00	122.0	7.14
	1176.00～1435.00	259.00	37.0	7.00
	1435.00～1836.00	401.00	87.0	4.61
	1836.00～2000.00	164.00	19.5	8.41
常规钻井	2000.00～2307.00	307.00	87.0	3.53

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