Progress and development directions of reservoir stimulation techniques for shale oil and gas in China and the United States

doi:10.7623/syxb202312018

Acta Petrolei Sinica ›› 2023, Vol. 44 ›› Issue (12): 2297-2307.DOI: 10.7623/syxb202312018

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Progress and development directions of reservoir stimulation techniques for shale oil and gas in China and the United States

Weng Dingwei^1,2, Lei Qun^1,2, Guan Baoshan¹, He Chunming^1,2, Sun Qiang^1,2, Huang Rui^1,2

1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
2. CNPC Key Laboratory of Oil and Gas Reservoir Stimulation, Hebei Langfang 065007, China

Received:2022-10-28 Revised:2023-10-07 Online:2023-12-25 Published:2024-01-06

中美页岩油气储层改造技术进展及发展方向

翁定为^1,2, 雷群^1,2, 管保山¹, 何春明^1,2, 孙强^1,2, 黄瑞^1,2

1. 中国石油勘探开发研究院北京 100083;
2. 中国石油天然气集团有限公司油气藏改造重点实验室河北廊坊 065007

通讯作者: 雷群,男,1963年8月生,2003年获石油大学(北京)博士学位,现为中国石油勘探开发研究院副院长、教授级高级工程师,主要从事采油采气工程技术方面的研究工作。Email:leiqun@petrochina.com.cn
作者简介:翁定为,男,1981年6月生,2013年获中国石油勘探开发研究院博士学位,现为中国石油勘探开发研究院压裂酸化技术中心主任、教授级高级工程师,主要从事压裂工艺技术方面的研究。Email:wendw69@petrochina.com.cn
基金资助:
中国石油天然气集团有限公司基础性前瞻性项目"储层改造关键技术与装备"(2021DJ45)资助。

Abstract

Abstract: Shale oil and gas resources currently spurt into popularity worldwide in the field of unconventional oil and gas exploration and development, of which industrial production can be effectively achieved by hydraulic fracturing. Based on the physical characteristics of shale reservoirs and the rheological properties of fracturing fluids, the technological progress, in stimulating shale oil and gas reservoirs in the United States, is systematically summarized, involving the understanding of fracture-controlled reservoirs, hydraulic fracturing monitoring technology, refracturing technique, data platform construction, and field-test site establishment. Additionally, seven key technologies were achieved during shale reservoir stimulation in China, including fracture-controlled stimulation techniques, innovative matched hydraulic fracturing equipment, core tools for multi-stage hydraulic fracturing, low-cost hydraulic fracturing materials, hydraulic fracture monitoring technology, wellbore reconstruction hydraulic fracturing technology, and fracturing optimization design software. Technical challenges faced by shale oil and gas reservoir stimulation are comprehensively analyzed in four areas:effective identification of sweet spots, optimization of hydraulic fracturing parameters, three-dimensional recovery of reserves, and potential exploitation of remaining reserves. On this basis, in order to effectively improve the development of shale oil and gas resources by fracture networks and realize large-scale production and cost-effective development of shale reservoirs, four development suggestions are put forward:(1)strengthen basic research to lay a solid foundation for the large-scale development of shale oil and gas; (2)enhance technological support to build a Chinese special hydraulic fracturing technology system; (3)increase reserve recovery rates and establish a full-life-cycle technology system; (4)promote digital transformation and establish an intelligent development pattern of the Internet of Things.

Key words: shale oil and gas, reservoir stimulation, fracture-controlled stimulation technology, reserve recovery, full life cycle, digitalization

摘要： 页岩油气资源作为国内外非常规油气资源勘探开发的热门领域,需要通过压裂改造才能获得工业开采价值。结合页岩储层物性特征和流体渗流规律,系统总结了美国页岩油气储层改造在裂缝控藏认识、压裂监测技术、重复压裂技术、数据平台建设和矿场实验室建设5个方面的技术进展以及中国页岩油气储层改造取得的缝控压裂优化技术、新型压裂配套装备、分段压裂核心工具、低成本压裂材料、水力裂缝监测技术、井筒重构压裂技术和压裂优化设计软件7项关键技术,全面剖析了中国页岩油气储层改造在甜点有效甄别、压裂参数优化、储量立体动用和剩余储量挖潜4个方面面临的技术挑战。在此基础上,为有效提高压裂缝网对页岩油气资源的动用程度,实现页岩储层的大规模建产与高效益开发,提出了4个方面的发展建议:①加强基础研究,筑牢页岩油气规模发展基石;②完善技术配套,构建有中国特色压裂技术体系;③提高储量动用率,构建全生命周期技术体系;④推进数字化转型,构建物联网智能发展格局。

关键词: 页岩油气, 储层改造, 缝控压裂技术, 储量动用, 全生命周期, 数字化

CLC Number:

TE35

Weng Dingwei, Lei Qun, Guan Baoshan, He Chunming, Sun Qiang, Huang Rui. Progress and development directions of reservoir stimulation techniques for shale oil and gas in China and the United States[J]. Acta Petrolei Sinica, 2023, 44(12): 2297-2307.

翁定为, 雷群, 管保山, 何春明, 孙强, 黄瑞. 中美页岩油气储层改造技术进展及发展方向[J]. 石油学报, 2023, 44(12): 2297-2307.

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Progress and development directions of reservoir stimulation techniques for shale oil and gas in China and the United States

中美页岩油气储层改造技术进展及发展方向

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