Special Oil & Gas Reservoirs >

2022 , Vol. 29 >Issue 4: 38 - 46

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.04.005

Geologic Exploration

Comprehensive Determination of Lateral Migration Routes and Exploration of Migration Patterns of Hydrocarbons in Nantun Formation, SW Beier Sag, Hailar Basin

  • Sun Tongwen ,
  • Wang Fang ,
  • Wang Yougong ,
  • Li Junhui ,
  • Yao Shihua ,
  • Li Bingni ,
  • Cheng Yina ,
  • Liu Minhua
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  • 1. Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China;
    2. Northeast Petroleum University Sanya Offshore Oil & Gas Research Institute, Sanya,Hainan 572025, China;
    3. PetroChina Daqing Oilfield Co. Ltd., Daqing, Heilongjiang 163712, China

Received date: 2021-12-12

  Revised date: 2022-05-29

  Online published: 2023-01-09

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Abstract

SW Beier Sag is currently a key exploration block with high oil reserves in Hailar Basin. In order to identify the influence of hydrocarbon migration on hydrocarbon accumulation, a "four-in-one” comprehensive determination method of hydrocarbon migration path, which was based on hydrocarbon source analysis, with hydrocarbon distribution characteristics as an indicator, migration numerical simulation as a constraint and geochemical tracing as a supporting evidence, was adopted to study the hydrocarbon migration paths and patterns of Nantun Formation in the study area. The results indicated that there were three hydrocarbon migration paths in Nantun Formation. One path was to migrate laterally from NW Beier Sub-sag to West Beier Slope along its short axis; the second path was to migrate from SW Beier Sub-sag to Huhenuoren Tectonic Belt along its short axis; and the third path was to accumulate hydrocarbon from NW and SW Beier Sub-sags to Huhenuoren Tectonic Belt and migrate to the southwest along the strike of tectonic ridge and fault. On the basis of the identification of migration paths, three types of lateral hydrocarbon migration patterns were summarized, including the migration along the strike of tectonic ridge and fault, the "stepped" migration along synclinal fault and the "toothbrush-like” migration along reverse fault. There were significant differences in the hydrocarbon accumulation sites and reservoir types controlled by the various migration patterns. The results of the study are of some significance for the next selection of favorable zones in the study area and for oil and gas exploration in similar areas.

Key words： hydrocarbon migration; migration pattern; numerical simulation; Nantun Formation; SW Beier Sag; Hailar Basin

Cite this article

Sun Tongwen , Wang Fang , Wang Yougong , Li Junhui , Yao Shihua , Li Bingni , Cheng Yina , Liu Minhua . Comprehensive Determination of Lateral Migration Routes and Exploration of Migration Patterns of Hydrocarbons in Nantun Formation, SW Beier Sag, Hailar Basin[J]. Special Oil & Gas Reservoirs, 2022 , 29(4) : 38 -46 . DOI: 10.3969/j.issn.1006-6535.2022.04.005

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