Differences in Performance of Models for Heterogeneous Cores during Pulse Decay Tests

doi:10.3390/app9153206

IMECH-IR > 流固耦合系统力学重点实验室

	Differences in Performance of Models for Heterogeneous Cores during Pulse Decay Tests
	Han GF(韩国锋); Chen, Y; Liu, M; Liu, XL
通讯作者	Liu, Xiaoli(xiaoli.liu@tsinghua.edu.cn)
发表期刊	APPLIED SCIENCES-BASEL
	2019-08-01
卷号	9 期号:15 页码:21
摘要	Featured Application Evaluate the permeability of unconventional reservoir cores. Abstract Shale and fractured cores often exhibit dual-continuum medium characteristics in pulse decay testing. Dual-continuum medium models can be composed of different flow paths, interporosity flow patterns, and matrix shapes. Various dual-continuum medium models have been used by researchers to analyze the results of pulse decay tests. But the differences in their performance for pulse decay tests have not been comprehensively investigated. The characteristics of the dual-permeability model and the dual-porosity model, the slab matrix, and the spherical matrix in pulse decay testing are compared by numerical modeling in this study. The pressure and pressure derivative curves for different vessel volumes, storativity ratios, interporosity flow coefficients, and matrix-fracture permeability ratios were compared and analyzed. The study found that these models have only a small difference in the interporosity flow stage, and the difference in the matrix shape is not important, and the matrix shape cannot be identified by pulse decay tests. When the permeability of the low permeability medium is less than 1% of the permeability of the high permeability medium, the difference between the dual-permeability model and the dual-porosity model can be ignored. The dual-permeability model approaches the pseudo-steady-state model as the interporosity flow coefficient and vessel volume increase. Compared with the dual-porosity model, the dual-permeability model has a shorter horizontal section of the pressure derivative in the interporosity flow stage. Finally, the conclusions were verified against a case study. This study advances the ability of pulse decay tests to investigate the properties of unconventional reservoir cores.
关键词	pulse decay test dual-porosity model dual-permeability model pseudo-state interporosity flow transient interporosity flow
DOI	10.3390/app9153206
收录类别	SCI
语种	英语
WOS记录号	WOS:000482134500261
关键词[WOS]	FRACTURED VERTICAL WELL ; GAS-PERMEABILITY ; FLOW ; ADSORPTION ; ROCKS
WOS研究方向	Chemistry ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
资助项目	National Natural Science Foundation of China[11602276]
项目资助者	National Natural Science Foundation of China
论文分区	二类
力学所作者排名	1
RpAuthor	Liu, Xiaoli
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/79961
专题	流固耦合系统力学重点实验室
推荐引用方式 GB/T 7714	Han GF,Chen, Y,Liu, M,et al. Differences in Performance of Models for Heterogeneous Cores during Pulse Decay Tests[J]. APPLIED SCIENCES-BASEL,2019,9,15,:21.
APA	韩国锋,Chen, Y,Liu, M,&Liu, XL.(2019).Differences in Performance of Models for Heterogeneous Cores during Pulse Decay Tests.APPLIED SCIENCES-BASEL,9(15),21.
MLA	韩国锋,et al."Differences in Performance of Models for Heterogeneous Cores during Pulse Decay Tests".APPLIED SCIENCES-BASEL 9.15(2019):21.

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