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Article Navigation >  Acta Sedimentologica Sinica  > 2019  >  37(3): 623-632

XU YongQiang, HE YongHong, ZHONG XiangYun, MA Jing, CHEN Lin, JIAO Jun, ZHU YuShuang. Research on the Connectivity Characterization among the Ultra-low Permeability Lithologic Reservoirs: Case study of the Chang 8 reservoir in the Maling area of the Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 623-632. doi: 10.14027/j.issn.1000-0550.2018.150
Citation: XU YongQiang, HE YongHong, ZHONG XiangYun, MA Jing, CHEN Lin, JIAO Jun, ZHU YuShuang. Research on the Connectivity Characterization among the Ultra-low Permeability Lithologic Reservoirs: Case study of the Chang 8 reservoir in the Maling area of the Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 623-632. doi: 10.14027/j.issn.1000-0550.2018.150
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Research on the Connectivity Characterization among the Ultra-low Permeability Lithologic Reservoirs: Case study of the Chang 8 reservoir in the Maling area of the Ordos Basin

doi: 10.14027/j.issn.1000-0550.2018.150
  • 1.

    State Key Laboratory of Continental Dynamics/Department of Geology, Northwest University, Xi'an 710069, China;

  • 2.

    Development Department, Changqing Oilfield Company, PetroChina, Xi'an 710018, China;

  • 3.

    Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi'an 710018, China

Funds:  National Science and Technology Major Project, No.2016ZX05046; National Natural Science Foundation of China, No.41390451
  • Received Date: 2018-05-10
  • Rev Recd Date: 2018-06-29
  • Publish Date: 2019-06-10
  • Analysis of connectivity among lithologic reservoirs could provide the basis for finding new oil and gas enrichment areas. Taking the Chang 8 reservoir in the Maling area of the Ordos Basin as an example, and according to sand body and the interlayer development, the fluid connectivity among reservoirs was determined by the total hydrocarbon chromatogram of its crude oil. This paper discusses the connectivity among Chang 8 reservoirs in the Maling area by combining dynamic and static data. Study results show that the sand body can be divided into three superposition models, which are the isolated, contacted, and tangency models. The tangency sand body model has good connectivity. A new formula for the connectivity probability of the sand body is proposed by taking the interlayer development into consideration and using this formula to calculate the connectivity probability of the sand body in the study area. Dynamic data analysis can be used to divide the Chang 8 reservoir into three fluid connected systems, each of which is connected to each other, and the interconnectivity among reservoirs in different systems is poor. The effectiveness of this method was verified according to the latest exploration and evaluation results, and this method has certain guiding significance for the analysis of the connectivity among the ultra-low permeability lithologic reservoirs and the next step for exploration and deployment.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Publishing history
  • Received:  2018-05-10
  • Revised:  2018-06-29
  • Published:  2019-06-10

Research on the Connectivity Characterization among the Ultra-low Permeability Lithologic Reservoirs: Case study of the Chang 8 reservoir in the Maling area of the Ordos Basin

doi: 10.14027/j.issn.1000-0550.2018.150
  • 1. State Key Laboratory of Continental Dynamics/Department of Geology, Northwest University, Xi'an 710069, China;
  • 2. Development Department, Changqing Oilfield Company, PetroChina, Xi'an 710018, China;
  • 3. Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi'an 710018, China
Funds:  National Science and Technology Major Project, No.2016ZX05046; National Natural Science Foundation of China, No.41390451
  • Received Date: 2018-05-10
  • Rev Recd Date: 2018-06-29
  • Publish Date: 2019-06-10

Abstract: Analysis of connectivity among lithologic reservoirs could provide the basis for finding new oil and gas enrichment areas. Taking the Chang 8 reservoir in the Maling area of the Ordos Basin as an example, and according to sand body and the interlayer development, the fluid connectivity among reservoirs was determined by the total hydrocarbon chromatogram of its crude oil. This paper discusses the connectivity among Chang 8 reservoirs in the Maling area by combining dynamic and static data. Study results show that the sand body can be divided into three superposition models, which are the isolated, contacted, and tangency models. The tangency sand body model has good connectivity. A new formula for the connectivity probability of the sand body is proposed by taking the interlayer development into consideration and using this formula to calculate the connectivity probability of the sand body in the study area. Dynamic data analysis can be used to divide the Chang 8 reservoir into three fluid connected systems, each of which is connected to each other, and the interconnectivity among reservoirs in different systems is poor. The effectiveness of this method was verified according to the latest exploration and evaluation results, and this method has certain guiding significance for the analysis of the connectivity among the ultra-low permeability lithologic reservoirs and the next step for exploration and deployment.

XU YongQiang, HE YongHong, ZHONG XiangYun, MA Jing, CHEN Lin, JIAO Jun, ZHU YuShuang. Research on the Connectivity Characterization among the Ultra-low Permeability Lithologic Reservoirs: Case study of the Chang 8 reservoir in the Maling area of the Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 623-632. doi: 10.14027/j.issn.1000-0550.2018.150
Citation: XU YongQiang, HE YongHong, ZHONG XiangYun, MA Jing, CHEN Lin, JIAO Jun, ZHU YuShuang. Research on the Connectivity Characterization among the Ultra-low Permeability Lithologic Reservoirs: Case study of the Chang 8 reservoir in the Maling area of the Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 623-632. doi: 10.14027/j.issn.1000-0550.2018.150
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