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| 1 | Characteristics and accumulation mechanism of tight sandstone gas reservoirs in the Upper Paleozoic, northern Ordos Basin, China显示文摘The Ordos Basin is a significant petroliferous basin in the central part of China.The Carboniferous and Permian deposits of transitional and continental facies are the main gas-bearing layers in the north part of the basin.The Carboniferous and Permian natural gas reservoirs in the northern Ordos Basin are mainly tight sandstone reservoirs with low porosity and low permeability,developing lots of 'sweet spots' with comparatively high porosity and permeability.The tight sandstones in the study area are gas-bearing,and the sweet spots are rich in gas.Sweet spots and tight sandstones are connected rather than being separated by an interface seal.Sweet spot sand bodies are vertically and horizontally overlapped,forming a large gas reservoir group.In fact,a reservoir formed by a single sweet spot sand body is an open gas accumulation.In the gentle dipping geological setting and with the source rocks directly beneath the tight reservoirs over a large area,the balance between gas charging into tight reservoirs from source rocks and gas loss from tight reservoirs through caprock is the key of gas accumulation in tight sandstones.Both the non-Darcy flow charging driven by source-reservoir excess pressure difference and the diffusion flow charging driven by source-reservoir gas concentration difference play an important role in gas accumulation.The results of mathematical modeling indicate that the gas accumulation cannot be formed by just one of the above mechanisms.The diffusion of gas from source rocks to reservoirs is a significant mechanism of tight sandstone gas accumulation. | Liu Guangdi Sun Mingliang Zhao Zhongying Wang Xiaobo Wu Shenghe | 2013 | Petroleum Science2013，10，4： | 16 |
| 2 | 突出油气勘探特色,注重内涵发展,建设国家重点学科显示文摘本文论述了中国石油大学'矿产普查与勘探'国家重点学科建设基本情况、研究方向、科研特色及发展态势,着重论述学科近10年来基于科技创新取得的建设成效。实践证明,中国石油大学'矿产普查与勘探'学科突出油气勘探特色,注重内涵发展,建设成效显著,发展态势良好,在油气地质与勘探领域取得了创新性成果,构筑起了承担国家重大科学任务的学科平台,形成了勇于攻关的科研团队,培养出高水平的人才,提高了国际学术影响力;已经成为中国油气地质理论与勘探技术方面科技创新、人才培养和学术交流的重要基地。 | 查明 庞雄奇 杨少春 朱筱敏 林承焰 柳广弟 | 2013 | 中国石油大学学报(自然科学版)2013，37，5： | 5 |
| 3 | 库车坳陷北部构造带断裂活动及油气成藏意义显示文摘库车坳陷北部构造带断裂活动时间长且多期次叠加,对油气成藏作用产生重要影响。通过生长指数剖面法、典型剖面伸展(压缩)率法、构造平衡剖面法3种方法联合,研究了库车坳陷北部构造带断裂的发育特征、活动时期及其油气成藏意义。结果表明:库车坳陷北部构造带断裂主要发育早期逆冲断层、晚期逆冲断层和长期活动断层3种类型;断裂活动时期有5期,分别为古近纪(E)、新近纪吉迪克组沉积期(N1j)、康村组沉积期(N1k)、库车组沉积期(N2k)、第四纪(Q),其中N1j、N1k、N2k为断裂活动的关键时期;断裂活动会导致克孜勒努尔组(J2kz)烃源岩沉积厚度变大,有利于构造、岩性等多类型圈闭的形成;断裂活动期(N1j、N1k、N2k)与烃源岩的主生排烃期(E、N1j、N1k、N2k)匹配关系良好;断裂活动有利于依南2和吐东2油气藏的生成和聚集,也会使依南4井和依深4井油气逸散,导致成藏保存条件被破坏。研究结果对分析该区油气藏成藏过程具有重要意义。 | 赵光杰 李贤庆 刘满仓 董才源 李谨 刘洋 肖中尧 | 2022 | 矿业科学学报2022，7，1： | 2 |
| 4 | Two highly efficient accumulation models of large gas fields in China显示文摘Based on reserve abundance, large gas fields in China can be divided into two types: type one of high abundance large gas fields, dominated by structural gas reservoirs; type two of low abundance large gas fields, dominated by stratigraphic and lithologic gas reservoirs. The formation of these two types of large gas fields is related to the highly efficient accumulation of natural gas. The accumulation of high abundance gas fields is dependent on the rapid maturation of the source kitchen and huge residual pressure difference between the gas source kitchen and reservoir, which is the strong driving force for natural gas migration to traps. Whereas the accumulation of low abundance gas fields is more complicated, involving both volume flow charge during the burial stage and diffusion flow charge during the uplift stage, which results in large area accumulation and preservation of natural gas in low porosity and low permeability reservoirs. This conclusion should assist gas exploration in different geological settings. | Wang Hongjun Bian Congsheng Liu Guangdi Sun Mingliang Li Yongxin | 2014 | Petroleum Science2014，11，1： | 2 |
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