China Petroleum Exploration ›› 2019, Vol. 24 ›› Issue (4): 520-531.DOI: 10.3969/j.issn.1672-7703.2019.04.012

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Application of high-precision hydrocarbon migration simulation technology in BZ 19-6 oil and gas field and its surrounding area

Zhao Dijiang, Guo Yonghua, Qiao Zhu, Chen Xinlu, Kong Shuanshuan   

  1. Tianjin Branch of CNOOC Ltd.
  • Online:2019-07-15 Published:2019-07-15
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Abstract: The 3D geological model established using existing hydrocarbon migration simulation software cannot reflect the spatial superimposition relationships of sandstone and mudstone, so it is hard to accurately and effectively simulate actual hydrocarbon migration process. Taking BZ 19-6 oil and gas field and its surrounding area in Bohai Sea as a case, a 3D geological model was established from individual wells and constrained by seismic attributes, and then the mudstone percent of the source fault was calculated and taken as the quantitative evaluation standard of fault transporting capacity, and finally 3D hydrocarbon migration was simulated. It is concluded that deep hydrocarbon accumulation is mainly under the joint control of sandstone and geomorphically low-potential zones, and middle and shallow hydrocarbon accumulation is affected by fault activity and mudstone percent of fault plane. The high-precision hydrocarbon migration simulation successfully reproduced the process of hydrocarbon accumulation in BZ 19-6 structure and presents good application prospect.

 

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