IMECH-IR  > 流固耦合系统力学重点实验室
Study of the effect of movable water saturation on gas production in tight sandstone gas reservoirs
Zhang J; Li XZ; Shen WJ (沈伟军); Gao SS; Liu HX; Ye LY; Fang FF
Source PublicationEnergies
2020-09
Volume13Issue:17Pages:4645
ISSN1996-1073
Abstract

The movable water saturation of tight sandstone reservoirs is an important parameter in characterizing water production capacity, and there is a great need to understand the relationship between movable water saturation and water production characteristics. However, movable water behavior in this context remains unclear. In this study, four groups of tight sandstone cores from the Sulige gas field are measured to understand the movable water saturation characteristics. Then, the effects such as reservoir micropore throat, clay mineral and physical properties on movable water saturation are analyzed, and the movable water saturation and water production characteristics are discussed. The results show that higher movable water saturation will result in a greater amount of water in the gas drive. There is a critical pressure difference of the gas drive, and a large amount of movable water will flow out. Movable water saturation is independent of the porosity, permeability and initial water saturation, while it is closely related to the reservoir micropore throat and clay mineral content. Movable water is mainly distributed in the medium and large pores; the larger the proportion of such pores, the higher the degree of movable water saturation. A lower mineral content will lead to higher movable water saturation in tight sandstone gas reservoirs. These results provide clues for identifying gas–water bearing reservoirs and evaluating and predicting the water production characteristics in gas wells in tight sandstone gas reservoirs.

Keywordtight sandstone gas reservoir movable water saturation gas drive water NMR water production
DOIdoi.org/10.3390/en13184645
Indexed BySCI ; EI
Language英语
DepartmentLMFS海洋土力学(LHO)
ClassificationQ3
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/84884
Collection流固耦合系统力学重点实验室
Corresponding AuthorZhang J; Shen WJ (沈伟军)
Affiliation1.School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
2.Department of Porous Flow & Fluid Mechanics, PetroChina Research Institute of Petroleum Exploration & Development
3.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 10083, China.
4.Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
5.School of Petroleum Engineering, Chongqing University of Science and Technology
Recommended Citation
GB/T 7714
Zhang J,Li XZ,Shen WJ ,et al. Study of the effect of movable water saturation on gas production in tight sandstone gas reservoirs[J]. Energies,2020,13(17):4645.
APA Zhang J.,Li XZ.,Shen WJ .,Gao SS.,Liu HX.,...&Fang FF.(2020).Study of the effect of movable water saturation on gas production in tight sandstone gas reservoirs.Energies,13(17),4645.
MLA Zhang J,et al."Study of the effect of movable water saturation on gas production in tight sandstone gas reservoirs".Energies 13.17(2020):4645.
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