摘要
煤系气高效勘探开发是当前中国煤地质与非常规油气地质研究关注焦点,"岩石力学地层与非常规油气"是当前非常规油气勘探开发国际前沿研究领域,煤系岩石力学地层与煤系气研究具有理论和实际意义。本文综述了岩石力学地层经典学术思想和新学术思想,评述了岩石力学地层理论方法及其非常规油气勘探开发现状进展,分析了煤系岩石力学地层理论方法构建的基础和条件,展望了岩石力学地层理论方法应用于煤系气高效勘探开发的前景。研究表明:煤系气共储共采与高效开发机理是制约煤系气高效勘探开发的关键科学问题,岩石力学地层具有有机衔接非常规油气地质与储层工程理论的天然属性和优势,有望成为破解关键科学问题的地质理论技术利器;岩石力学地层经典学术思想核心内涵为沉积地层及其岩石力学特征控制岩层天然裂隙为主的构造发育规律,新学术思想凝练为沉积岩(地)层既控制致密储层天然裂隙发育和非常规油气成藏,又控制致密储层人工诱导裂隙发育和非常规油气开发;聚焦煤系岩石力学地层的独特性及其与煤系气成藏、开发的响应关系,揭示煤系气共储共采岩石力学地层控制机理,创新和构建煤系气勘探开发的岩石力学地层理论方法体系,成为煤系岩石力学地层研究的目标任务;以典型煤系含煤段煤系叠合型气藏为示例,构建和应用煤系岩石力学地层模型,开展煤系气甜点预测、产层优选、开发工艺优化,是我国煤系气(含煤段)高效勘探开发实践当前急需。
High-efficient exploration and development of coal measure gas is the current focus of research on coal geology and unconventional oil and gas geology in China. “Rock mechanics stratigraphy and unconventional oil and gas” is an international frontier research field in unconventional oil and gas exploration and development. The studies on coal measure rock mechanics strata and coal measure gas has both theoretical significance and practical value. The classic and new academic ideas of rock mechanics stratigraphy were summarized, the present status of the theory and method of rock mechanics stratigraphy and its application on unconventional oil and gas exploration and development were reviewed, the foundation and conditions of constructing the theory and method of rock mechanics stratigraphy in coal measures were analyzed, the outlook of the application of rock mechanics stratigraphic theory and method to the high-efficient exploration and development of coal measure gas is summarized. The mechanism of co-storage-co-recovery and high-efficient development of coal measure gas is a key scientific problem, which restricts the high-efficient exploration and development of coal measure gas. Rock mechanics strata have natural properties and advantages of organically connecting unconventional oil and gas geology with reservoir engineering theory, and is expected to become a powerful tool for geological theory and technology to solve key scientific problems. The core connotation of classical academic ideas for rock mechanics strata is the sedimentary strata and its related structural development rules on the natural fracture controlled by the rock mechanic characteristics. A new academic idea is that the sedimentary strata not only control the development of natural fractures and unconventional oil and gas accumulation in tight reservoirs, but also the development of artificially induced fractures and unconventional oil and gas development in tight reservoirs. The objective of the research on coal measure rock mechanics stratigraphy is to focus on the uniqueness of coal measure rock mechanics stratigraphy and its response to coal measure gas accumulation and development, reveal the control mechanism of rock mechanics stratigraphy on coal measure gas co-storage-co-recovery, set up rock mechanics stratigraphy theory and method system for coal measure gas exploration and development. Taking superimposed gas reservoirs in typical coal-bearing section of coal measures as an example, it is urgently required to construct and apply the coal measure mechanical stratigraphy model, and to carry out sweet spot prediction, pay zone selection and recovery technique optimization for the high-efficient exploration and development of coal measure gas(coal-bearing section) in China.
作者
桑树勋
周效志
刘世奇
黄华州
王冉
韩思杰
王建国
潘冬明
张志镇
汪吉林
陈同俊
赵立明
郑司建
SANG Shuxun;ZHOU Xiaozhi;LIU Shiqi;HUANG Huazhou;WANG Ran;HAN Sijie;WANG Jianguo;PAN Dongming;ZHANG Zhizhen;WANG Jilin;CHEN Tongjun;ZHAO Liming;ZHENG Sijian(Jiangsu Key of Coal—based Greenhouse Gas Control and Utilization,Carbon Neutrality Institute,China University of Mining and Technology,Xuzhoui Jiangsu 221008,China;Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process of the Ministry of Education,School of Resource and Earth Sciences,China University of Mining and Technology,Xuzhou,Jiangsu 221008,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China)
出处
《地质学报》
EI
CAS
CSCD
北大核心
2022年第1期304-316,共13页
Acta Geologica Sinica
基金
国家自然科学基金重点项目(编号42030810)
国家自然科学基金重大仪器研制项目(编号41727801)联合资助的成果。
关键词
岩石力学地层
裂隙
模型与模拟
煤系气
勘探开发
mechanical stratigraphy
fractures
modelling
coal measure gas
exploration and development