西南石油大学学报(自然科学版)

Previous Articles     Next Articles

Late Fault Adjustment and Late Accumulation Pool-forming#br# Model in Qionghai Uplift,Pearl River Mouth Basin

Zhang Yingzhao1, Zhu Weilin2*, Gao Yangdong2   

  1. 1. Zhanjiang Branch,China National Offshore Oil Limited Corporation,Zhanjiang,Guangdong 524057,China
    2. China National Offshore Oil Limited Corporation,Dongcheng,Beijing 100010,China
  • Online:2015-10-01 Published:2015-10-01

Abstract:

To figure out hydrocarbon distribution pattern,the adjustment of hydrocarbon reservoirs of Miocene Zhujiang
formation under Miocene tectonic background and secondary pool-forming pattern were analyzed in Qionghai uplift,Pearl
River Mouth basin of South China Sea. The upper pools and lower pools which were divided by T41 subsurface boundary were
characterized by late accumulation and late fault adjustment respectively. The lower pools with great reservoir storage property
had relatively heavy and high viscosity oil. The upper pools had light and low viscosity oil. Hydrocarbon of both upper pools and
lower pools had derived from same source rock. Mid-Miocene NWW SEE trend echelon fault system had adjusted lower pools
and migrated hydrocarbon upwards to form upper pools. The hydrocarbon pool-forming model with characteristics of late fault
adjustment and late accumulation was proposed reasonedly,that is,part hydrocarbon from lower pools of Zhujiang Formation
had migrated upwards along late fault system and accumulated in the upper reservoirs. The lower pools after adjustment and
upper pools superimposed vertically,form relatively heavy lower pools and light upper pools.

Key words: late fault adjustment and late accumulation pools, Pool-forming model, Miocene Zhujiang Formation, Qionghai
uplift,
Pearl River Mouth Basin

CLC Number: