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- Title
致密碎屑岩储层物性影响因素及优质储层主控因素 ——以松辽盆地长岭断陷龙凤山次凹营城组为例.
- Authors
曲希玉; 苗长盛; 李瑞磊; 朱建峰; 徐 文; 刘英男
- Abstract
Taking the tight clastic reservoirs of the Yingcheng Formation in the Longfengshan sub-sag of the Changling Fault Depression in the Songliao Basin as the research object,a variety of techniques and methods are used to study the physical properties and main controlling factors of high-quality reservoirs. The influencing factors of reservoir physical properties of tight clastic rocks include rock type,sedimentary microfacies,sandmud interface,cementation,dissolution and microfractures. The factors conducive for the accumulation of tight gas are chlorite in the poor lining,dissolution of volcanic rock debris and microcracks. Among them:(1)The pore lining chlorite can protect the primary pores by slowing down compaction and inhibiting cementation,thereby controlling the reservoir quality of the water environment transformation zone;(2)The dissolved pores of volcanic rock debris are the main type of secondary pores,which can control the quality of the reservoir in the acid fluid distribution area;(1)Microfractures caused by hydrocarbon-generating pressurization can increase the permeability of reservoirs,thereby controlling the quality of reservoirs in deep-water depositional areas. The main controlling factor(1)is mainly distributed in the shallow water area at the edge of the basin,the main controlling factor(3)is mainly distributed in the deep water area near the center of the basin,and the main controlling factor(3)is distributed in the whole area. The main controlling factor(2)can be superimposed with(1)or (3)to control the distribution of high-quality reservoirs,and based on this,a plane distribution model of highquality reservoirs can be established to predict favorable areas and obtain production verification.
- Subjects
CLASTIC rocks; WATER quality management; HYDROCARBON reservoirs; VOLCANIC ash, tuff, etc.; WATER depth; ENVIRONMENTAL quality; PARAGENESIS
- Publication
Natural Gas Geoscience, 2022, Vol 33, Issue 7, p1036
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2022.02.005