渝东南南川地区常压页岩气示范井应用评价及推广效果

王运海; 贺庆; 朱智超; 龙志平; 彭兴; 曹建山

doi:10.11781/sysydz2023061160

渝东南南川地区常压页岩气示范井应用评价及推广效果

doi: 10.11781/sysydz2023061160

1.
中国石化华东油气分公司, 南京 210019
2.
中国石化华东油气分公司石油工程技术研究院, 南京 210019

基金项目:

国家重大科技专项 2016ZX05061

中国石化科技部项目 P19017

详细信息

作者简介:
王运海(1975—)，男，硕士，教授级高级工程师，从事油气勘探开发科研及管理工作。E-mail：wangyunh.hdsj@sinopec.com

中图分类号: TE2
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- 被引次数: 0
出版历程
- 收稿日期: 2023-09-10
- 修回日期: 2023-10-30
- 刊出日期: 2023-11-28

Application evaluation and promotion effect of normal pressure shale gas demonstration well in Nanchuan area in southeastern Chongqing

1.
SINOPEC East China Branch Company, Nanjing, Jiangsu 210019, China
2.
Petroleum Engineering Research Institute, SINOPEC East China Branch Company, Nanjing, Jiangsu 210019, China

摘要

摘要: 渝东南南川地区常压页岩气资源丰富，是页岩气勘探开发的重要地区。该区前期钻井受地质条件复杂和工程技术配套不完善等因素影响，提速提效总体成效与常压页岩气规模效益开发要求存在差距。为此，选取该区阳春沟区块阳页54-3HF井作为首口常压页岩气示范井，攻关形成区域优快钻完井示范技术序列。在分析区域钻井技术难点的基础上，结合地层抗压特性、地层压力系统等基础研究，系统性攻关浅表层穿漏技术、井身结构优化技术、提速工具优选技术、轨迹控制与导向技术、低密度强封堵油基钻井液技术和优快完井技术等钻井关键技术，形成以浅表层工勘、大排量清水抢钻井、优化井身结构、全国产化提速工具配套、低密度强封堵油基钻井液、地质工程一体化导向、低承压井筒环境优快固井技术为核心的低成本优快钻井示范技术体系。示范井钻井周期19.96 d，刷新国内4 500 m井深最短钻井周期，机械钻速24.88 m/h，较同区相同井深最快机械钻速10.29 m/h提高141.79%，优质页岩钻遇率100%，固井质量优秀，起到了良好的示范引领作用。推广应用后，地区机械钻速、钻井周期等各项技术经济指标均得到明显提升，加快了南川地区常压页岩气勘探开发进程。南川地区常压页岩气示范井攻关形成的高效钻完井技术系列能够满足常压页岩气水平井钻井提速提效的要求，有效推动了石油工程“四提”迈上新台阶，为四川盆地周缘类似气田建设奠定了技术基础，助力国内上游稳油增气降本提效。
- 常压页岩气 /
- 示范井 /
- 钻井技术 /
- 南川地区 /
- 渝东南
Abstract: Nanchuan area in southeastern Chongqing is rich in normal pressure shale gas resources, which is an important area for SINOPEC's shale gas exploration and development. Due to the complex geological conditions and imperfect engineering technology, the overall efficiency of drilling acceleration and efficiency improvement in this area can not meet the requirements for large-scale benefit-based development of normal pressure shale gas. Therefore, Yangye 54-3HF well in Yangchungou block in this area is selected as the first normal pressure shale gas demonstration well of SINOPEC to research and form a regional optimal and fast drilling and completion demonstration technology series. On the basis of systematic analysis of regional drilling technology difficulties, combined with basic research on formation pressure resistance characteristics and formation pressure system, the demonstration well research systematically explores key drilling technologies such as shallow formation leakage technology, well structure optimization technology, accelerating tool optimization technology, trajectory control and orientation technology, low-density strong plugging oil-based drilling fluid technology, and optimal fast completion technology. A low-cost, optimal, and fast drilling demonstration technology system with the core of shallow formation prospecting, large-capacity clean water drilling, optimized well structure, domestic acceleration tools, low-density and strong plugging oil-based drilling fluid, integrated geological engineering orientation, and low-pressure wellbore fast cementing technology is formed. The drilling period of the demonstration well is 19.96 d, which is the shortest drilling period in 4 500 m well depth in China, and the ROP is 24.88 m/h, which is 141.79% higher than the fastest ROP of 10.29 m/h in the similar well depth in the same region. The rate of drilling in high-quality shale is 100%, and the cementing quality is excellent, which has played a good demonstration and leading role. After the promotion and application, various technical and economic indicators such as the regional ROP and drilling period have been significantly improved, speeding up the exploration and development process of normal pressure shale gas in Nanchuan area. The practice of normal pressure shale gas demonstration wells in Nanchuan area has shown that the efficient drilling and completion technology series formed by the demonstration well research can meet the requirements of drilling acceleration and efficiency improvement in horizontal wells of normal pressure shale gas, effectively promoting the four improvements in petroleum engineering to a new level, and laying a technical foundation for the construction of similar gas fields around the Sichuan Basin, and helping achieve greater progress in stabilizing oil and gas production, reducing costs, and improving efficiency in the upstream industry in China.
- normal pressure shale gas /
- demonstration well /
- drilling technology /
- Nanchuan area /
- southeastern Chongqing
注释:

利益冲突声明/Conflict of Interests

所有作者声明不存在利益冲突。

All authors disclose no relevant conflict of interests.

作者贡献/Authors’Contributions

王运海、贺庆、朱智超、龙志平提出论文构思；王运海、彭兴、曹建山参与论文写作和修改。所有作者均阅读并同意最终稿件的提交。

The paper structure was proposed by WANG Yunhai, HE Qing, ZHU Zhichao and LONG Zhiping. The manuscript was drafted and revised by WANG Yunhai, PENG Xing and CAO Jianshan. All the authors have read the last version of paper and consented for submission.

HTML全文

图 1 渝东南南川地区阳页54平台工勘预测漏失位置

Figure 1. Predicted leakage location of Yangye 54 platform in Nanchuan area in southeastern Chongqing

下载: 全尺寸图片幻灯片

图 2 渝东南南川地区阳页54-3HF井井身结构优化方案

Figure 2. Well structure optimization scheme of Yangye 54-3HF well in Nanchuan area in southeastern Chongqing

下载: 全尺寸图片幻灯片

图 3 渝东南南川地区阳页54-3HF井地层压力剖面曲线

Figure 3. Formation pressure profile curves of Yangye 54-3HF well in Nanchuan area in southeastern Chongqing

下载: 全尺寸图片幻灯片

图 4 渝东南南川地区应用井机械钻速对比

Figure 4. Comparison of ROP for applied wells in Nanchuan area in southeastern Chongqing

下载: 全尺寸图片幻灯片

图 5 渝东南南川地区DP4平台水平段钻井指标

Figure 5. Drilling indicators for horizontal sections of DP4 platform in Nanchuan area in southeastern Chongqing

下载: 全尺寸图片幻灯片

表 1 渝东南南川地区阳页54-3HF井钻头使用分析

Table 1. Analysis of drilling bits used in Yangye 54-3HF well in Nanchuan area in southeastern Chongqing

序号	钻头尺寸/mm	钻头类型	钻头型号	进尺/m	机械钻速/(m/h)	同平台邻井机械钻速/(m/h)	提速效果/%
1	406.4	PDC	KS1662AFGRS	168	24.00	19.75	21.52
2	311.2	PDC	KSD1663DFRT	254	31.75	16.88	61.55
3	311.2	PDC	KSD1663DFRT	455	35.74	16.88	61.55
4	215.9	PDC	KSD1662DFRT	1 102	31.49	25.35	24.22
5	215.9	PDC	KSD1662RT	2 617	22.37	17.32	29.16

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表 2 渝东南南川地区各区块特点与井身结构方案

Table 2. Stratum characteristics and well structure scheme of each block in Nanchuan area in southeastern Chongqing

区块	地层特点	目的层地层压力系数		井身结构
阳春沟	浅表地层漏失风险高，整体稳定；中部地层承压能力高	1.0~1.15	简化型三级	导管：Φ406.4 mm×168 m飞仙关组一开：Φ311.2 mm×877 m韩家店组二开：Φ215.9 mm×4 596 m龙马溪组
东胜	浅表自流井组、须家河组、雷口坡组地层漏、垮风险大，井段长；中部地层承压能力高	1.1~1.3	简化型四级	导管：Φ609.6 mm×270 m嘉陵江组一开：Φ406.4 mm×960 m飞仙关组二开：Φ311.2 mm×2 240 m韩家店组三开：Φ215.9 mm×5 132 m龙马溪组
平桥南	浅表地层漏失风险高，整体稳定；中部地层承压能力低	1.1~1.25	简化型三级	导管：Φ406.4 mm×254 m嘉陵江组一开：Φ311.2 mm×2 458 m韩家店组二开：Φ215.9 mm×5 824 m龙马溪组
武隆、道真	浅表地层漏失风险高，整体稳定；中部地层易漏失，承压能力低	1.0~1.1	简化型二级	一开：Φ311.2 mm×995 m嘉陵江组二开：Φ215.9 mm×5 297 m龙马溪组

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