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Analysis method of pulse decay tests for dual-porosity cores
Han GF(韩国锋); Sun L; Liu YW(刘曰武); Zhou SW
发表期刊JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
2018-11-01
卷号59页码:274-286
ISSN1875-5100
摘要Homogeneous models are typically used to analyze the results of pulse-decay tests for low permeability cores. However, this poses a problem because some samples are dual-porosity media with microcracks/macropores and micropores. In this study, numerical simulations were conducted and the results showed that the pulse decay curves of the dual-porosity models are different from those for the homogeneous model. The results indicated that the volumes of the upstream and downstream vessels play an important role in identifying dual-porosity media and the early time and late time are mainly influenced by the storativity ratio and interporosity flow coefficient, respectively. A pressure derivative method was proposed in this work in order to identify dualporosity media at the early time and distinguish the interporosity flow models. This method is applicable for vessel volumes within one-tenth to ten times the pore volume. The proposed method was verified against the experimental data of other researchers.
关键词Pulse decay test Transient dual-porosity model Pseudosteady-state dual-porosity model Permeability
DOI10.1016/j.jngse.2018.09.006
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000448677300022
关键词[WOS]TRANSIENT LABORATORY METHOD ; TIGHT ROCKS ; PERMEABILITY MEASUREMENT ; HYDRAULIC-PROPERTIES ; PRESSURE ; GAS ; SHALE ; ADSORPTION ; DIFFUSION ; TRANSPORT
WOS研究方向Energy & Fuels ; Engineering, Chemical
WOS类目Energy & Fuels ; Engineering
项目资助者Key Laboratory for Mechanics in Fluid solid Coupling Systems, CAS ; National Natural Science Foundation of China [11602276]
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/78162
专题流固耦合系统力学重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
2.PetroChina Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
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Han GF,Sun L,Liu YW,et al. Analysis method of pulse decay tests for dual-porosity cores[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2018,59:274-286.
APA 韩国锋,Sun L,刘曰武,&Zhou SW.(2018).Analysis method of pulse decay tests for dual-porosity cores.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,59,274-286.
MLA 韩国锋,et al."Analysis method of pulse decay tests for dual-porosity cores".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 59(2018):274-286.
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