西南石油大学学报(自然科学版)

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Control of Sedimentary Diagenesis on Reservoir Production Capacity#br# Evaluation in South Fault Terrace of Gaoyou Sag

ZHONG Siying1*, DING Sheng2   

  1. 1. Exploration and Development Research Institute,Jiangsu Oilfield,SINOPEC,YangZhou,Jiangsu 225009,China
    2 Second Production Plant,Jiangsu Oilfield,SINOPEC,Huai′ an,Jiangsu 211600,China
  • Online:2016-02-01 Published:2016-02-01

Abstract:

Factors affecting low permeability reservoir productivity are numerous and complex,so the correct analysis and
evaluation of these factors,for low permeability reservoir development have important significance. This article excludes
engineering factors,from geological considerations,focuses on the analysis and evaluation of sedimentary and diagenetic
effects on productivity,and analysis of its mechanism taking advantage of special data such as constant-pressure mercury and
NMR. Research indicates that:the storage layer production capacity are mainly controlled by later diagenesis in Sag Gaoyou
South broken bands,and controlled by sedimentation in local small scale and the same diagenetic environments,to study its
mechanism,reservoir is mainly affected by diagenesis such as compaction,cementation,corrosion in South fault terrace of
Gaoyou Sag,to form a variety of micro-pore structure,led to significant differences of reservoir production capacity in South
fault terrace of Gaoyou Sag,so diagenetic facies studies for evaluation of low permeability reservoir productivity forecast is
significant.

Key words: Gaoyou Sag, sedimentary microfacies, diagenetic facies, microscopic pore structure, productivity

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