Characteristics and Geological Significance of Hydrodynamic System on Ultra-Low Permeability Reservoir of Yanchang Formation in Ordos Basin
详细信息
- 责任者：Deng Xiuqin (Exploration and Development Research Institution ; National Engineering Laboratory of Exploration and Development of Low-Permeability Oil & Gas Fields ; Changqing Oilfield Company ; Xi’an 710018 ; China) ; Yao Jingli
- 刊名：Journal of Northwest University
- 出版年：2011
- 卷期：41(6)
- 关键词：低渗透油气藏 ; low permeability reservoir ; 岩性油气藏 ; lithologic reservoir ; 成藏动力学系统 ; pool-forming dynamic system ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.1044-1050
- 图表：7 illus., 20 refs.
- 分类号：1003
- issnNo：ISSN1000-274X
- isbnNo：CN61-1072/N
摘要
The large-scale oil pools are developed in Yanchang formation in Ordos Basin. The research on the hydrodynamic system will be of service to the future accumulation study and exploration. First, through the study of acoustic travel time of logging, the low compaction of mudstone at the stage of maximum burial depth is acquired; then, the overpressure is calculated. Last, according to lithology, physical property and pressure distribution, the hydrodynamic system is analyzed. The Ch6-Ch8 reservoir group is a super pressure hydrodynamic system under the action of unstable compaction of mudstone at the major pool forming period.