Reservoir Geology Key Laboratory of Shandong Province

Qingdao, China

Reservoir Geology Key Laboratory of Shandong Province

Qingdao, China
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Ma C.,China University of Petroleum - East China | Dong C.,China University of Petroleum - East China | Dong C.,Reservoir Geology Key Laboratory of Shandong Province | Dong C.,China National Petroleum Corporation | And 7 more authors.
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | Year: 2017

Based on the study of Paleogene shale in Subei Basin, and combining results of the Marcellus shale, this paper defined the concept of organic-matter pore, summarized its types and characteristics, discussed its influencing factors and finally concluded evolution rule of organic-matter pore. The results show that organic-matter pores generally refer to pores which are within or at the boundary of organic matter and are genetically associated with it, and they include primary and secondary organic-matter pores. Organic-matter pores display various shapes and are distributed heterogeneously. Especially when they are well developed, the internal structure is a honeycomb connecting component in the layered framework. Temperature, overburden pressure, inorganic mineral and fluid are the external conditions influencing the development of organic-matter pores and organic matter type, while maturity and content are the internal factors controlling the development of organic-matter pores. Organic-matter pores of both Paleogene shale samples in Subei Basin and the thermal simulations have the characteristics of episodic evolution, which is closely related to the fabric evolution and hydrocarbon-generating mechanism during the process of hydrocarbon generation from Kerogen. © 2017, Periodical Office of China University of Petroleum. All right reserved.


Lin C.,China University of Petroleum - East China | Lin C.,Reservoir Geology Key Laboratory of Shandong Province | Sun X.,China University of Petroleum - East China | Ma C.,China University of Petroleum - East China | And 3 more authors.
Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology | Year: 2017

Based on the studies of reservoir physical property, reservoir-seal association and burial history, the physical property evolution and controlling factors of south and middle Huagang formation in central inversion tectonic belt of Xihu depression were investigated by using analysis of casting thin section, scanning electron microscopy, X-ray, mercury intrusion and vitrinite reflectance. The results show that different reservoir-seal associations undergo different diagenetic evolutions by the control of burial history. The southern region is far away from early subsidence center. Primary pores are preserved during the slow subsidence period, which benefits the dissolution in the rapid subsidence and tectonic uplift stage. Late cementation is not abundant in the period of steady subsidence. Values of ФCOM (compaction porosity loss), ФCEM (cementation porosity loss) and ФDIS (dissolution porosity increase) are 20. 86%, 7. 65% and 7. 78% respectively. Shallow buried and half-open diagenetic environment leads to conventional and low permeability reservoir with relatively weak compaction, weak cementation and intensified dissolution. By comparison, the central region is close to the early subsidence center. Primary pores are completely destroyed during slow subsidence. The compaction is inhibited by the undercompaction overpressure resulting from beneficial reservoir-seal association during rapid subsidence. The dissolution is apparently different during tectonic uplift. Late cementation is comparatively rich in steady subsidence. For upper members of Huagang formation, the values of ФCOM, ФCEM and ФDIS of are 21. 82%, 9. 01% and 5. 64%; for lower members, the values are 23. 84%, 9. 05% and 4. 50% respectively. Deep buried and closed diagenetic environment leads to low permeability and tight reservoir in upper member and tight reservoir in lower member, both with relatively intensified compaction, strong cementation and weak dissolution. © 2017, Editorial Board of Journal of CUMT. All right reserved.


Yang S.,China University of Petroleum - East China | Yang S.,Reservoir Geology Key Laboratory of Shandong Province | Wen Y.,China University of Petroleum - East China | Wen Y.,Reservoir Geology Key Laboratory of Shandong Province | And 2 more authors.
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | Year: 2016

Clastic reservoir heterogeneity of the Second member of Dainan Formation in Zhenwu Oilfield in Yangzhou, Jiangsu Province, was quantitatively characterized by the method of data envelopment analysis. Each small layer was used as characterization unit in the process of calculation, and the evaluation group was formed with attribution parameters in each small layer of the whole region to determine the mathematical model. In addition, eight parameters which can influence the reservoir heterogeneity were considered to establish the linear programming model. The results show that the reservoir heterogeneity index is mainly between 0.5 and 0.9 with medium-strong heterogeneity in the second member of the Dainan Formation in Zhenwu Oilfield. And there is a positive correlation between the distribution of heterogeneity index and the sedimentary microfacies. The heterogeneity index has a direct impact on the effect of waterflooding. The larger the heterogeneity index is, the higher the absorption intensity and oil displacement efficiency are. The relationship between the heterogeneity index and the degree of water flooding is positive. The residual oil saturation and the heterogeneity index are negatively correlated. © 2016, Central South University of Technology. All right reserved.


Lin C.-Y.,China University of Petroleum - East China | Lin C.-Y.,Reservoir Geology Key Laboratory of Shandong Province | Dong C.-M.,China University of Petroleum - East China | Dong C.-M.,Reservoir Geology Key Laboratory of Shandong Province | And 8 more authors.
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | Year: 2013

The features of reservoir characterization were discussed through reviewing reservoir characterization history and oil field real case examples. The results show that reservoir characterization technology was developed and improved in order to solve the production problems in petroleum exploration and development. New technologies were developed in response to complications in individual reservoir problems. Development of related disciplines has advanced the theory and technology, which in turn also leads to development of new disciplines. The multi-discipline collaboration is the key to development of reservoir characterization. Reservoir heterogeneity characterization is the emerging challenge in reducing oil development costs and improving oil recovery ratio. The technology can be widely used in exploration, evaluation and development phases of oil and gas fields. The applications of the technology show that a healthy development cycle of "practical problems-technology development-practical application-solve problems" has come into being.


Dong C.,China University of Petroleum - East China | Dong C.,Reservoir Geology Key Laboratory of Shandong Province | Ma C.,China University of Petroleum - East China | Lin C.,China University of Petroleum - East China | And 3 more authors.
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | Year: 2015

The composition of shale formation is complicated, and the lithofacies classification schemes are not unified. Using core observation, microscopic identification, whole rock analysis and organic geochemical data analysis, a comprehensive shale set lithofacies classification scheme, which is based on the principle of “ four-component and three-terminal element”, was established by adopting a method of combining macro structures of cores, organic content with rock types. The classification scheme introduces the organic matter content, and reflects the structural characteristics, mixed sedimentary characteristics of shale formations as well as its practicability. This classification scheme has been effectively applied to the study of lithofacies classification of shale set in the second Member of Funing Formation, Subei Basin, and may form a solid basis for the future shale reservoir space research, logging lithofacies identification and reservoir reconstruction evaluation. ©, 2015, Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science). All right reserved.

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