西南石油大学学报(自然科学版) ›› 2020, Vol. 42 ›› Issue (2): 85-93.DOI: 10.11885/j.issn.1674-5086.2019.10.10.01

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The Research Progress of Well Logging Evaluation of Marine Natural Gas Hydrate

ZHOU Jian1, SONG Yanjie1,2, JIANG Yanjiao1,2, SUN Qinshuai1, JING Yanqing3   

  1. 1. School of Earth Sciences, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
    2. Accumulation and Development of Unconventional Oil and Gas, State Key Laboratory Cultivation Base Jiontly-constructed by Helongjiang Province and the Ministry of Science and Technology, Northeast Petroleum University, Daqing, Heilongjiang 163318 China;
    3. International Logging Company, Great Well Drilling Company of CNPC, Panjin, Liaoning 124010, China
  • Received:2019-10-10 Online:2020-04-10 Published:2020-04-10

Abstract: More and more attention has been paid to natural gas hydrates with huge resources. Aiming to slove the present problem of logging evaluation of marine gas hydrate reservoirs, this paper introduces the lattice structures, physical properties, distribution form and formation conditions. According to the physical properties and reservoir characteristics of natural gas hydrates, the logging response characteristics of natural gas hydrates are analyzed. Based on the literatures investigation, the main methods of calculating the porosity and saturation of natural gas hydrate reservoir by logging method are obtained, the shale content and saturation of the natural gas hydrate reservoir in Shenhu of South China Sea are evaluated. It is suggested that the existence of shale should be considered in the study of natural gas hydrates by synthetic artificial core in laboratory. By summarizing the research results of well logging evaluation of marine gas hydrate, this paper provides an important basis for future large-scale prediction of marine gas hydrate reserves and exploration and development, and has important practical significance for effective exploitation of natural gas hydrate resources.

Key words: natural gas hydrate, well logging response, literature review, porosity, saturation

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