Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume

The development and utilization of coalbed methane is of great significance to reduce carbon dioxide emission. Through the research, this paper presents a fast analytical solution method for the productivity of coalbed methane reservoir with finite-conductivity fractured well and stimulated reservoi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Chen Li
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi-Wiley 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/5d474461c3b348d79726b00fe8942e27
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5d474461c3b348d79726b00fe8942e27
record_format	dspace
spelling	oai:doaj.org-article:5d474461c3b348d79726b00fe8942e272021-11-15T01:19:42ZProduction Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume1468-812310.1155/2021/1864734https://doaj.org/article/5d474461c3b348d79726b00fe8942e272021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/1864734https://doaj.org/toc/1468-8123The development and utilization of coalbed methane is of great significance to reduce carbon dioxide emission. Through the research, this paper presents a fast analytical solution method for the productivity of coalbed methane reservoir with finite-conductivity fractured well and stimulated reservoir volume region. Based on the dual-porosity flowing mechanism, combined with the Langmuir adsorb equation, Fick diffusion law, and Darcy law, a mathematical model considering diffusion in matrix and transport in natural fracture system is established, using spherical matrix to describe the transient steady-state sorption, and using cubic matrix to describe the pseudosteady-state sorption. Then, combined with the inner system and outer system, the analytical solution was obtained. Furthermore, the accuracy of the solution was validated against a numerical simulation. According to the Duhamel principle, the effect of wellbore storage and skin factor was got. Due to the SRV region, the linear flow and radial flow will appear before the pressure wave reach the outer region. And then, based on the pressure analysis result, we will have made the sensitivity analysis with different influence parameter. The result reveals that storage coefficient and conductivity factor mainly influence the early time; the permeability ratio and dimensionless SRV region radius mainly influence the property of SRV region. Finally, the analytical solution of the new model was applied to field history match. This model takes into account the adsorption and desorption characteristics of coalbed methane, as well as the SRV zones generated during fracturing. The calculation speed of the new model is increased while the calculation accuracy is retained, and the intensity of software application is reached. The model achieves the purpose of rapid evaluation and accurate prediction of gas well productivity and obtains a set of productivity evaluation method suitable for coalbed methane reservoir with fractured vertical well, which provides a basis for the development and productivity evaluation of coalbed methane reservoir in domestic and international cooperation.Chen LiHindawi-WileyarticleGeologyQE1-996.5ENGeofluids, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 Chen Li Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume
description	The development and utilization of coalbed methane is of great significance to reduce carbon dioxide emission. Through the research, this paper presents a fast analytical solution method for the productivity of coalbed methane reservoir with finite-conductivity fractured well and stimulated reservoir volume region. Based on the dual-porosity flowing mechanism, combined with the Langmuir adsorb equation, Fick diffusion law, and Darcy law, a mathematical model considering diffusion in matrix and transport in natural fracture system is established, using spherical matrix to describe the transient steady-state sorption, and using cubic matrix to describe the pseudosteady-state sorption. Then, combined with the inner system and outer system, the analytical solution was obtained. Furthermore, the accuracy of the solution was validated against a numerical simulation. According to the Duhamel principle, the effect of wellbore storage and skin factor was got. Due to the SRV region, the linear flow and radial flow will appear before the pressure wave reach the outer region. And then, based on the pressure analysis result, we will have made the sensitivity analysis with different influence parameter. The result reveals that storage coefficient and conductivity factor mainly influence the early time; the permeability ratio and dimensionless SRV region radius mainly influence the property of SRV region. Finally, the analytical solution of the new model was applied to field history match. This model takes into account the adsorption and desorption characteristics of coalbed methane, as well as the SRV zones generated during fracturing. The calculation speed of the new model is increased while the calculation accuracy is retained, and the intensity of software application is reached. The model achieves the purpose of rapid evaluation and accurate prediction of gas well productivity and obtains a set of productivity evaluation method suitable for coalbed methane reservoir with fractured vertical well, which provides a basis for the development and productivity evaluation of coalbed methane reservoir in domestic and international cooperation.
format	article
author	Chen Li
author_facet	Chen Li
author_sort	Chen Li
title	Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume
title_short	Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume
title_full	Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume
title_fullStr	Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume
title_full_unstemmed	Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume
title_sort	production analysis for fractured vertical well in coal seam reservoirs with stimulated reservoir volume
publisher	Hindawi-Wiley
publishDate	2021
url	https://doaj.org/article/5d474461c3b348d79726b00fe8942e27
work_keys_str_mv	AT chenli productionanalysisforfracturedverticalwellincoalseamreservoirswithstimulatedreservoirvolume
_version_	1718428924415836160

Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume

Ejemplares similares