西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (4): 33-38.DOI: 10.3863/j.issn.1674-5086.2010.04.007

• 地质勘探 • Previous Articles     Next Articles

HYDROCARBON MIGRATION CHARACTERISTICS OF LINNAN SAG IN HUIMIN DEPRESSION

ZHU Zhi-qiang1 ZENG Jian-hui2 WANG Jian-jun1
  

  1. (1.International Project Appraise Research Group of RIPED,CNPC,Haidian Beijing 100083,China;2.State Key Laboratory of Petroleum Resources and Exploration,China University of Petroleum,Changping Beijing 102249,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-08-20 Published:2010-08-20

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Abstract: Based on the detailed analysis of dynamic systems,pathway conditions,directions and times of petroleum migration in Linnan Sag,a systematic research on oil migration characteristics in Linnan Sag is made.The results show that:(1) oil migration system in Linnan Sag varies distinctly from formation to formation.Normal pressure system appears in formations above 3000m,while mix pressure system appears below 3000m.And buoyancy and abnormal pressure are the main oil migration dynamics in Linnan Sag;(2) Near east west fault and interconnected sand bodies are the pathways for oil migration from Sag center to margin;(3) Four superior migration directions exist for oil migration from Sag center to margin;(4) Oil migration happened in Oligocene Dongying Period.

Key words: Linnan Sag, hydrocarbon migration, migration agent, passage system, migratory direction, migration time

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