| 页岩气资源评价方法及评价参数赋值——以中扬子地区五峰组—龙马溪组为例 |
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| 引用本文： | 邱小松,胡明毅,胡忠贵,叶 颖 蔡全升.页岩气资源评价方法及评价参数赋值——以中扬子地区五峰组—龙马溪组为例[J].中国地质,2014,41(6):2091-2098. |
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| 作者姓名： | 邱小松 胡明毅 胡忠贵 叶 颖 蔡全升 |
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| 作者单位： | 长江大学油气资源与勘探技术教育部重点实验室;长江大学地球科学学院;中国石油华北油田采油四厂; |
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| 基金项目： | 武汉地质调查中心“武陵—湘鄂西页岩气资源调查评价”下设专题“中扬子地区页岩气储层特征及非均质性研究”;油气资源与勘探技术教育部重点实验室(长江大学)开放基金资助项目(K2014-10);湖北省自然科学基金项目(2011CDB005)联合资助 |
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| 摘 要： | 页岩气是一种重要的非常规油气资源,其评价方法不同于常规油气资源。以页岩气聚集机理及形成过程为依据,结合中国页岩气勘探开发现状,认为体积法是适合中国现阶段页岩气资源评价的最优方法。结合财政部对页岩气的界定标准及中扬子地区五峰组—龙马溪组泥页岩有机质成熟度、埋深、含气量、保存、地表条件等因素,认为研究区目的层页岩气勘探开发有利区位于出恩施—彭水地区;以体积法计算页岩气资源量的原理为依据,对有利区含气页岩面积、有效页岩厚度、密度等参数采用确定性赋值,其值分别为5174 km2、57 m、2.71 t/m3;并采用条件概率赋值法分别对有机碳含量、总孔隙度、含气饱和度等不确定性参数进行条件概率赋值。最终估算出了有利区内五峰组—龙马溪组页岩气地质资源量为5434.7×108m3。
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| 关 键 词： | 页岩气 资源评价方法 评价参数 条件概率 中扬子地区 |
Evaluation methods and parameter assignments of shale gas resources: A case study of the Wufeng-Longmaxi Formation in the Middle Yangtze region |
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| QIU Xiao-song,HU Ming-yi,HU Zhong-gui,YE Ying,CAI Quan-sheng.Evaluation methods and parameter assignments of shale gas resources: A case study of the Wufeng-Longmaxi Formation in the Middle Yangtze region[J].Chinese Geology,2014,41(6):2091-2098. |
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| Authors: | QIU Xiao-song HU Ming-yi HU Zhong-gui YE Ying CAI Quan-sheng |
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| Institution: | 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Wuhan 430100, Hubei, China;2.School of Geosciences, Yangtze University, Wuhan 430100, Hubei, China; 3. 4th Production Plant, North China Oilfield , PetroChina, Langfang 065000, Hebei, China |
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| Abstract: | Abstract: The evaluation method for shale gas, which is a very important unconventional oil and gas resource, is different from that for conventional oil and gas resources. According to the accumulation mechanism and formation process, the volumetric method seems to be the best method for evaluating shale gas resources in consideration of research status in China. In this paper, based on the analysis of maturity of organic matter, depth, gas content, preservation condition, surface environment of shale of Wufeng-Longmaxi Formation in the Middle Yangtze region, in combination with the definition standard of shale gas by Ministry of Finance, the authors hold that the Enshi-Pengshui area is a favorable area for exploration and development. According to the volume method principle for computing the shale gas resources, the acreage, thickness and density of gas-bearing shale in this area are 5174 km2, 57 m, and 2.71 t/m3 respectively. In accordance with the conditional probability, the authors assigned conditional probabilities to uncertain parameters, which include such factors as organic carbon content, total porosity and gas saturation. Finally, the geological resources of shale gas in favorable areas of Wufeng-Longmaxi Formation are estimated to be at 5434.7×108 m3. |
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| Keywords: | shale gas evaluation methods of resources evaluation parameter conditional probability Middle Yangtze region |
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