Coalbed methane reservoir stimulation using guar-based fracturing fluid: A review

Qiming Huang, Shimin Liu, Gang Wang, Bing Wu, Yongzhi Zhang

Research output: Contribution to journalReview article

5 Citations (Scopus)

Abstract

As a greener and efficient energy source, the development and utilization of coalbed methane (CBM) can not only increase the energy supply for the State, but also reduce the greenhouse gas (GHG) emission by replacing other carbon-intense energy sources, such as oil and coal. CBM reservoirs are known as low to ultra-low permeability reservoir and thus the fracturing stimulation is commonly required for commercial gas production from coal seams. This article reviews the main components, rheology, friction pressure, and proppant transport characteristics of the guar-based fracturing fluid, and its field applications. Meanwhile, both advantage and disadvantage for CBM fracturing treatment were comprehensively analyzed. Guar-based fracturing fluid is composed of guar gel, and various additives, mainly crosslinker and breaker. As a complex mixture, the effectiveness of guar-based fracturing fluid is not only closely related to the concentration of various chemical additives but also influenced by fluid-coal interactions at the in situ reservoir conditions. The gel residual due to low flowback rate can potentially damage the formation and hinder the effectiveness of gas production. The formation damages include impacts on gas adsorption, diffusion, and transport in CBM reservoirs. Coal matrix has a strong adsorption capacity for guar-based fluids and is likely to have a sorption induced matrix swelling and reduce the effective permeability. Hence, it is necessary to develop more efficient breakers to increase flowback of guar-based fracturing fluid. The long-term engineering practice shows that the fracturing effect of guar-based fracturing fluid is quite different in field applications at different operation sites. Therefore, the mechanisms of the impact of guar gel on the methane flow in coal should be further studied, and it is important to determine the applicability and improving performance of the guar-based fracturing fluid for site specified application based on the reservoir pressure, temperature, hydrological environment, structural geology and other unique reservoir properties.

Original languageEnglish (US)
Pages (from-to)107-125
Number of pages19
JournalJournal of Natural Gas Science and Engineering
Volume66
DOIs
StatePublished - Jun 1 2019

Fingerprint

Fracturing fluids
Coal
Fracturing (fossil fuel deposits)
Gels
Structural geology
Low permeability reservoirs
Proppants
Gas adsorption
Petroleum reservoirs
Fluids
Gas emissions
Gases
Rheology
Greenhouse gases
Swelling
Coal bed methane
Sorption
Methane
Friction
Adsorption

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology

Cite this

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title = "Coalbed methane reservoir stimulation using guar-based fracturing fluid: A review",
abstract = "As a greener and efficient energy source, the development and utilization of coalbed methane (CBM) can not only increase the energy supply for the State, but also reduce the greenhouse gas (GHG) emission by replacing other carbon-intense energy sources, such as oil and coal. CBM reservoirs are known as low to ultra-low permeability reservoir and thus the fracturing stimulation is commonly required for commercial gas production from coal seams. This article reviews the main components, rheology, friction pressure, and proppant transport characteristics of the guar-based fracturing fluid, and its field applications. Meanwhile, both advantage and disadvantage for CBM fracturing treatment were comprehensively analyzed. Guar-based fracturing fluid is composed of guar gel, and various additives, mainly crosslinker and breaker. As a complex mixture, the effectiveness of guar-based fracturing fluid is not only closely related to the concentration of various chemical additives but also influenced by fluid-coal interactions at the in situ reservoir conditions. The gel residual due to low flowback rate can potentially damage the formation and hinder the effectiveness of gas production. The formation damages include impacts on gas adsorption, diffusion, and transport in CBM reservoirs. Coal matrix has a strong adsorption capacity for guar-based fluids and is likely to have a sorption induced matrix swelling and reduce the effective permeability. Hence, it is necessary to develop more efficient breakers to increase flowback of guar-based fracturing fluid. The long-term engineering practice shows that the fracturing effect of guar-based fracturing fluid is quite different in field applications at different operation sites. Therefore, the mechanisms of the impact of guar gel on the methane flow in coal should be further studied, and it is important to determine the applicability and improving performance of the guar-based fracturing fluid for site specified application based on the reservoir pressure, temperature, hydrological environment, structural geology and other unique reservoir properties.",
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Coalbed methane reservoir stimulation using guar-based fracturing fluid : A review. / Huang, Qiming; Liu, Shimin; Wang, Gang; Wu, Bing; Zhang, Yongzhi.

In: Journal of Natural Gas Science and Engineering, Vol. 66, 01.06.2019, p. 107-125.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Coalbed methane reservoir stimulation using guar-based fracturing fluid

T2 - A review

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AU - Liu, Shimin

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AU - Wu, Bing

AU - Zhang, Yongzhi

PY - 2019/6/1

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N2 - As a greener and efficient energy source, the development and utilization of coalbed methane (CBM) can not only increase the energy supply for the State, but also reduce the greenhouse gas (GHG) emission by replacing other carbon-intense energy sources, such as oil and coal. CBM reservoirs are known as low to ultra-low permeability reservoir and thus the fracturing stimulation is commonly required for commercial gas production from coal seams. This article reviews the main components, rheology, friction pressure, and proppant transport characteristics of the guar-based fracturing fluid, and its field applications. Meanwhile, both advantage and disadvantage for CBM fracturing treatment were comprehensively analyzed. Guar-based fracturing fluid is composed of guar gel, and various additives, mainly crosslinker and breaker. As a complex mixture, the effectiveness of guar-based fracturing fluid is not only closely related to the concentration of various chemical additives but also influenced by fluid-coal interactions at the in situ reservoir conditions. The gel residual due to low flowback rate can potentially damage the formation and hinder the effectiveness of gas production. The formation damages include impacts on gas adsorption, diffusion, and transport in CBM reservoirs. Coal matrix has a strong adsorption capacity for guar-based fluids and is likely to have a sorption induced matrix swelling and reduce the effective permeability. Hence, it is necessary to develop more efficient breakers to increase flowback of guar-based fracturing fluid. The long-term engineering practice shows that the fracturing effect of guar-based fracturing fluid is quite different in field applications at different operation sites. Therefore, the mechanisms of the impact of guar gel on the methane flow in coal should be further studied, and it is important to determine the applicability and improving performance of the guar-based fracturing fluid for site specified application based on the reservoir pressure, temperature, hydrological environment, structural geology and other unique reservoir properties.

AB - As a greener and efficient energy source, the development and utilization of coalbed methane (CBM) can not only increase the energy supply for the State, but also reduce the greenhouse gas (GHG) emission by replacing other carbon-intense energy sources, such as oil and coal. CBM reservoirs are known as low to ultra-low permeability reservoir and thus the fracturing stimulation is commonly required for commercial gas production from coal seams. This article reviews the main components, rheology, friction pressure, and proppant transport characteristics of the guar-based fracturing fluid, and its field applications. Meanwhile, both advantage and disadvantage for CBM fracturing treatment were comprehensively analyzed. Guar-based fracturing fluid is composed of guar gel, and various additives, mainly crosslinker and breaker. As a complex mixture, the effectiveness of guar-based fracturing fluid is not only closely related to the concentration of various chemical additives but also influenced by fluid-coal interactions at the in situ reservoir conditions. The gel residual due to low flowback rate can potentially damage the formation and hinder the effectiveness of gas production. The formation damages include impacts on gas adsorption, diffusion, and transport in CBM reservoirs. Coal matrix has a strong adsorption capacity for guar-based fluids and is likely to have a sorption induced matrix swelling and reduce the effective permeability. Hence, it is necessary to develop more efficient breakers to increase flowback of guar-based fracturing fluid. The long-term engineering practice shows that the fracturing effect of guar-based fracturing fluid is quite different in field applications at different operation sites. Therefore, the mechanisms of the impact of guar gel on the methane flow in coal should be further studied, and it is important to determine the applicability and improving performance of the guar-based fracturing fluid for site specified application based on the reservoir pressure, temperature, hydrological environment, structural geology and other unique reservoir properties.

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