Integrated Evaluation of Reservoir for Puguang Gas Field with Gray Correlation Gridding
详细信息
- 责任者：Wan Xiaowei (Research Institute of Exploration and Development ; Zhongyuan Oilfield Company ; SINOPEC ; Puyang 457001 ; China) ; Bi Jianxia
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2010
- 卷期：17(4)
- 关键词：灰色关联度分析 ; grey correlativity analysis ; 储层评价 ; reservoir evaluation ; 四川 ; Sichuan Province
- 页码：p.405-408
- 图表：3 illus., 3 tables, 6 refs.
- 分类号：1003
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
The distribution of carbonate reservoir in Puguang Gas Field is controlled by many factors, such as sedimentary facies, diagenesis and faulting system, which causes the complicated reservoir pore structures and serious heterogeneity and increases the development difficulty. Various evaluation parameters, such as reservoir thickness, porosity, permeability, sedimentary microfacies index and fracture index, are introduced and a geological model is established in order to estimate the reservoirs and to portray the distribution of high-quality reservoir accurately. Weight factors are determined through the use of gray correlation method and the evaluation index of grid computing is normalized in the geological model, which determines the comprehensive score of each grid by the weighted summation of these indexes. The reservoir types of each grid are defined and the difference among reservoirs and the spatial distribution rules of high-quality reservoir are described according to the relational expressions of comprehensive score and productivity.