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- Title
川中安岳气田震旦系灯影组四段台缘-台内区储层差异及控制因素.
- Authors
田兴旺; 彭瀚霖; 王云龙; 杨岱林; 孙奕婷; 张玺华; 文龙; 罗冰; 洪海涛; 王文之; 马奎; 叶茂; 薛玖火
- Abstract
The reservoir of Dengying Formation of Sinian system is controlled by the combination of Tongwan II episodic karstification and dune beach facies in Anyue gas field,central Sichuan. Its lithology is complex and the reservoir is highly heterogeneous in vertical and horizontal directions,which results in great differences be⁃ tween the reservoir at the platform margin and in the platform,and the difference of single well productivity (the former is obviously better than the latter). In order to overcome the major problems and challenges in the process of fine evaluation and exploration,such as high-efficiency development of the platform edge zone,up⁃ grading of reserves scale in the platform area,fine prediction of high-quality reservoir earthquakes,etc.,this pa⁃ per analyzes the reservoir commonness and differences of the four members of the Sinian Dengying Formation in Anyue gas field,central Sichuan Province,based on the observation of drilled cores and thin sections,com⁃ bined with the analysis of laboratory,seismic and logging data and discuss the controlling factors. The results show that the reservoir space and reservoir types are basically the same in the platform margin area and in the platform area,but the development degree and physical properties of the reservoir dissolution holes in the plat⁃ form margin area and in the platform area are weakening,the reservoir development degree,quality and devel⁃ opment location are different,and the reservoir combination types are different. The main factors that cause the reservoir differences are the development degree of favorable mound beach facies and Tongtan facies according to the study of reservoir development characteristics and distribution law and the analysis of seismic reflection mode of high-yield wells,the high-quality reservoir development blocks are selected for exploration,and good application results are obtained. The high-efficiency development of the platform edge zone of Anyue Gas Field is realized,and the drilling rate and single well production of high-quality reservoir in the platform area are im ⁃ proved. The scale of reserves has been upgraded.
- Subjects
SICHUAN Sheng (China); GAS fields; DATA logging; RESERVOIRS; FACIES; BEACHES
- Publication
Natural Gas Geoscience, 2020, Vol 31, Issue 9, p1225
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2020.04.007