Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China

Low porosity-permeability structures and microcracks, where gas is produced, are the main characteristics of tight sandstone gas reservoirs in the Sichuan Basin, China. In this work, an analysis of amplitude variation with offset (AVO) is performed. Based on the experimental and log data, sensitivit...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chuantong Ruan, Jing Ba, José M. Carcione, Tiansheng Chen, Runfa He
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	tight sandstone gas reservoirs rock-physics template Biot–Rayleigh theory total porosity microcrack porosity Technology T
Acceso en línea:	https://doaj.org/article/9eb85398b7dc44a593aa6807d338fcee
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9eb85398b7dc44a593aa6807d338fcee
record_format	dspace
spelling	oai:doaj.org-article:9eb85398b7dc44a593aa6807d338fcee2021-11-11T15:59:31ZMicrocrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China10.3390/en142172251996-1073https://doaj.org/article/9eb85398b7dc44a593aa6807d338fcee2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7225https://doaj.org/toc/1996-1073Low porosity-permeability structures and microcracks, where gas is produced, are the main characteristics of tight sandstone gas reservoirs in the Sichuan Basin, China. In this work, an analysis of amplitude variation with offset (AVO) is performed. Based on the experimental and log data, sensitivity analysis is performed to sort out the rock physics attributes sensitive to microcrack and total porosities. The Biot–Rayleigh poroelasticity theory describes the complexity of the rock and yields the seismic properties, such as Poisson’s ratio and P-wave impedance, which are used to build rock-physics templates calibrated with ultrasonic data at varying effective pressures. The templates are then applied to seismic data of the Xujiahe formation to estimate the total and microcrack porosities, indicating that the results are consistent with actual gas production reports.Chuantong RuanJing BaJosé M. CarcioneTiansheng ChenRunfa HeMDPI AGarticletight sandstone gas reservoirsrock-physics templateBiot–Rayleigh theorytotal porositymicrocrack porosityTechnologyTENEnergies, Vol 14, Iss 7225, p 7225 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tight sandstone gas reservoirs rock-physics template Biot–Rayleigh theory total porosity microcrack porosity Technology T
spellingShingle	tight sandstone gas reservoirs rock-physics template Biot–Rayleigh theory total porosity microcrack porosity Technology T Chuantong Ruan Jing Ba José M. Carcione Tiansheng Chen Runfa He Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
description	Low porosity-permeability structures and microcracks, where gas is produced, are the main characteristics of tight sandstone gas reservoirs in the Sichuan Basin, China. In this work, an analysis of amplitude variation with offset (AVO) is performed. Based on the experimental and log data, sensitivity analysis is performed to sort out the rock physics attributes sensitive to microcrack and total porosities. The Biot–Rayleigh poroelasticity theory describes the complexity of the rock and yields the seismic properties, such as Poisson’s ratio and P-wave impedance, which are used to build rock-physics templates calibrated with ultrasonic data at varying effective pressures. The templates are then applied to seismic data of the Xujiahe formation to estimate the total and microcrack porosities, indicating that the results are consistent with actual gas production reports.
format	article
author	Chuantong Ruan Jing Ba José M. Carcione Tiansheng Chen Runfa He
author_facet	Chuantong Ruan Jing Ba José M. Carcione Tiansheng Chen Runfa He
author_sort	Chuantong Ruan
title	Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
title_short	Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
title_full	Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
title_fullStr	Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
title_full_unstemmed	Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
title_sort	microcrack porosity estimation based on rock physics templates: a case study in sichuan basin, china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9eb85398b7dc44a593aa6807d338fcee
work_keys_str_mv	AT chuantongruan microcrackporosityestimationbasedonrockphysicstemplatesacasestudyinsichuanbasinchina AT jingba microcrackporosityestimationbasedonrockphysicstemplatesacasestudyinsichuanbasinchina AT josemcarcione microcrackporosityestimationbasedonrockphysicstemplatesacasestudyinsichuanbasinchina AT tianshengchen microcrackporosityestimationbasedonrockphysicstemplatesacasestudyinsichuanbasinchina AT runfahe microcrackporosityestimationbasedonrockphysicstemplatesacasestudyinsichuanbasinchina
_version_	1718432430022459392

Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China

Ejemplares similares