吐哈探区非常规油气资源开发策略

doi:10.7657/XJPG20230307

摘要/Abstract

摘要：

为加快吐哈探区非常规油气资源效益开发，针对开发技术难点，在对比中国非常规资源开发现状的基础上，借鉴页岩油、致密气开发的成熟经验，对吐哈探区非常规油气资源开发策略进行探讨。提出了不同盆地、不同构造单元及不同目的层的非常规油藏开发对策：三塘湖盆地马朗凹陷二叠系页岩油藏采用多层系开发，借助打造东疆最大减碳基地技术平台，大力发展页岩油藏CO₂全程补能+降黏体积压裂技术，持续探索页岩油藏提高采收率技术；三塘湖盆地二叠系马中致密油实施井组整体多介质复合吞吐，采收率提高至15.0%；准噶尔盆地吉木萨尔凹陷吉28区块二叠系页岩油藏借鉴吉木萨尔页岩油示范区经验，厘清页岩油藏甜点分类评价及分布特征，提高Ⅰ类+Ⅱ类储集层钻遇率，实现页岩油藏效益开发；对于吐哈盆地胜北侏罗系三间房组致密气藏，开展地质工程一体化先导试验，提升水平段长度及储集层甜点钻遇率，提高胜北致密气藏开发效果。

关键词: 准噶尔盆地, 三塘湖盆地, 非常规油气资源, 页岩油, 致密气, 开发策略, 提高采收率

Abstract:

To accelerate the development and utilization of unconventional oil and gas resources in the Turpan-Hami exploration area, the current development of unconventional resources in China is reviewed. Considering the technical difficulties in development and the mature experience in domestic shale oil and tight gas development, the development strategies for unconventional oil and gas resources in the Turpan-Hami exploration area are discussed. The development strategies for unconventional oil reservoirs are proposed regarding different basins, structural units and target zones. For the Permian shale oil reservoirs in the Malang sag of Santanghu basin, multi-layer development strategy is adopted; along with the construction of the largest carbon reduction base in the eastern Xinjiang, the technology of CO₂ full-chain energy replenishment + viscosity-reduction volume fracturing for shale oil is vigorously developed to continuously enhance the recovery of shale oil. For the Permian Mazhong tight oil reservoirs in the Santanghu basin, well group multi-media composite huff-and-puff is adopted to enhance the oil recovery to 15.0%. For the Permian shale oil reservoirs in the Ji 28 block in the Jimsar sag, eastern Junggar basin, based on the successful experience in the Jimsar Shale Oil Demonstration Zone, the shale oil sweet spots are classified and evaluated, their distribution characteristics are clarified, and the drilling rate of Type I + II reservoirs is improved, so as to realize the beneficial development of shale oil. For the Jurassic Sanjianfang tight gas reservoirs in the Shengbei sag of Turpan-Hami basin, pilot tests of geology-engineering integration are performed to increase the length of horizontal section and the drilling rate of reservoir sweet spots, so as to improve the production efficiency of the tight gas reservoirs in the Shengbei sag.

Key words: Junggar basin, Santanghu basin, unconventional oil and gas resources, shale oil, tight gas, development strategy, EOR

中图分类号:

TE341

徐君, 杨春, 孟朋飞. 吐哈探区非常规油气资源开发策略[J]. 新疆石油地质, 2023, 44(3): 314-320.

XU Jun, YANG Chun, MENG Pengfei. Development Strategies for Unconventional Oil and Gas Resources in Turpan-Hami Exploration Area[J]. Xinjiang Petroleum Geology, 2023, 44(3): 314-320.

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