地质工程一体化技术在威远页岩气高效开发中的实践与展望

doi:10.3969/j.issn.1672-7703.2018.02.008

摘要/Abstract

摘要： 针对威远页岩气地表条件复杂、储层埋藏深度大、构造复杂、非均质性强、压裂改造难度大等特点，坚持"一体化、工厂化、效益化"的开发理念，应用地质工程一体化技术，厘定平面甜点和纵向甜点，优化井位设计；实现精准地质导向，大幅提升甜点钻遇率；提高钻井工程质量，有效缩短钻井周期和降低井下复杂状况的发生率；优化压裂工艺设计，实现压裂改造体积的最大化。基于此，形成了较为完善、复杂海相条件下对页岩气勘探开发有较强借鉴意义的项目管理、研究设计、科研现场、地质钻井和地质压裂5个一体化模式，单井产量不断提升，单井成本持续降低，实现了威远页岩气规模有效开发；不断践行与完善地质工程一体化技术，深化地质认识和加强工程技术配套，实现威远3500m以浅页岩气高效开发以及深层页岩气效益开发。

关键词: 地质工程一体化, 威远页岩气, 一体化模式, 实践, 展望

Abstract: The shale gas reservoir in Weiyuan block is characterized by complex surface condition, deep buried depth, complex structure, strong heterogeneity and difficult fracturing stimulation. To deal with these difficulties, a series of technologies and measures are adopted. First, the development concept of "integration, industrialization and efficiency" is followed firmly, and the geology-engineering integration technology is adopted to confirm plane and vertical sweet spots and optimize the well design. Second, accurate geosteering is realized to increase the drilling rate of sweet spots greatly. Third, the quality of drilling engineering is improved so as to shorten the drilling cycle effectively and reduce the incidence of complex downhole conditions. Fourth, the fracturing process design is optimized to maximize the fracturing volume. And thus, the relatively perfect integration model of project management, research design, field research, geological drilling and geological fracturing which can be well used as the reference for the exploration and development of shale gas in the setting of complex marine is formed, the single well production is increased continuously, the single well cost is reduced steadily, and shale gas in Weiyuan block is developed effectively in the large scale. Next, it is necessary to practice and complete the geology-engineering integration technology continuously, deepen geological cognition and strengthen the support engineering technologies so as to realize the efficient development of shallow shale gas reservoirs above 3500 m and the profitable development of deep shale gas reservoirs in Weiyuan block.

Key words: geology-engineering integration, shale gas in Weiyuan block, integration model, practice, prospect

中图分类号:

刘乃震, 王国勇, 熊小林. 地质工程一体化技术在威远页岩气高效开发中的实践与展望[J]. 中国石油勘探, 2018, 23(2): 59-68.

Liu Naizhen, Wang Guoyong, Xiong Xiaolin. Practice and prospect of geology-engineering integration technology in the efficient development of shale gas in Weiyuan block[J]. China Petroleum Exploration, 2018, 23(2): 59-68.

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