Cavity Completion For Coalbed Methane Stimulation - An Integrated Investigation And Trial In The Bowen Basin, Queensland

Wold, M.B.; Davidson, S.C.; Wu, Bailin; Choi, S.K.; Koenig, R.A.

doi:10.2118/30733-ms

Cited by 15 publications

(5 citation statements)

References 11 publications

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“…Other historical references include Truong et al (1990), which provided information on inseam drilling for gas drainage at the Moura No. 2 Underground Mine and Wold et al (1995), which discussed two cavitation trials in the Nipan and Dawson River fields.…”

Section: Westside Corporation Limitedmentioning

confidence: 99%

Technology review of the Northern Bowen and Galilee basins

Johnson

Garnett

2023

APPEA J.

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This paper reviews and summarises the work that has been conducted and the technology used in exploring and developing the Northern Bowen and Galilee basins in Queensland. It examines the methods operators have used in drilling, completing and testing wells through the varying stages of exploration, appraisal and development in the different parts of the basins. It examines all the work conducted in the Betts Creek Beds and Aramac Coal Measures throughout the Galilee Basin; the Moranbah Coal Measures, Rangal Coal Measures and Fort Cooper Coal Measures in the Moranbah area of the Bowen Basin; the Rangal Coal Measures, Burngrove Formation and Fairhill Formation in the Blackwater area; the conventional and coal seam gas developments in the Rolleston area, including the Bandanna Formation plays near Injune; and the Baralaba Coal Measures in the Moura area. Wells have been completed both open and cased hole with techniques including vertical wells, both with and without hydraulic fracturing and cavitation, as well as a variety of horizontal well designs including surface to inseam wells with vertical intercept wells and multiple lateral sections, chevron wells and both heel and toe intercepts. Operators have also implemented multiple wells on one pad. Throughout the Northern Bowen Basin, horizontal well drilling has been a key technology in commercial development. Generally, activities within the Galilee Basin have not progressed as far as the Bowen Basin, but nevertheless, horizontal wells are also emerging as a key technology.

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Section: Westside Corporation Limitedmentioning

confidence: 99%

Technology review of the Northern Bowen and Galilee basins

Johnson

Garnett

2023

APPEA J.

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“…A similar technique was used in The Bowen Basin, Queensland, Australia. The process was simulated numerically by the discrete Element method assuming a fractured network and experimentally in laboratory tests 5,6,7 . To explore such an idea, a coupled reservoir geomechanics model is developed for poorly cemented heavy oil reservoirs in Western Canada.…”

Section: Background Studymentioning

confidence: 99%

Enhanced Production in Horizontal Wells by the Cavity Failure Well Completion

Yarlong¹,

Bernard²

2001

Proceedings of SPE Western Regional Meeting

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractHigh viscosity and weak cementation existing in heavy oil reservoirs present great challenge to us in rich heavy oil reservoirs in Northwestern Canada for production and well completion. On one hand, we attempt to increase the exposure of the reservoir to the well so that we can maximize the production potential. On the other, we must select an adequate strategy for well completion in order to maintain the integrity of the well during production. A well completion strategy by cavity-failure mechanism has been used for coalbed methane and heavy oil production during SAGD. The success of their previous operations leads us to investigate the feasibility of such a well completion strategy in both cold production and other enhanced production process in poorly consolidated heavy oil reservoirs. A coupled reservoir-geomechanics model is developed. A black-oil model is fully coupled to a Mohr-Coulomb type elastoplastic geomechanics model. An open hole condition with slotted liner is simulated. The wellbore pressure is rapidly reduced to create a massive dilation zone near the well so that the intact porosity can be mobilized. Consequently, an enhanced zone near the slotted liner with a higher permeability can be generated, leading to negative skin factor during the production. The field conditions reported in Cold Lake are used to evaluate our study and simulations.

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“…The sudden release in wellbore pressure causes friable, low strength coal and rock particles to slough into the wellbore. 6,7 The injection/blowdown sequences are repeated until wellbore stabilization is achieved. A sonar log can be used to obtain a three-dimensional representation of the cavity as a function of depth and azimuth.…”

Section: Cavity Completionsmentioning

confidence: 99%

A Comparative Analysis of the Production Characteristics of Cavity Completions and Hydraulic Fractures in Coalbed Methane Reservoirs

Goktas¹,

Ertekin²

1999

Proceedings of SPE Rocky Mountain Regional Meeting

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractCoalbed methane wells usually require a stimulation technique because their initial flow rates are often quite low. Hydraulic fracturing is the most common type of stimulation technique applied to coalgas reservoirs. Recently, open-hole cavity completions have become an alternative stimulation technique in coalbed methane reservoirs.In this study, a three-dimensional, two-phase fluid flow model is used to compare production performances of the cavity-completed and hydraulically fractured wells in coalbed methane reservoirs. A static local grid refinement (LGR) technique is embedded into the model to adequately capture the flow behavior around cavity completions and hydraulic fractures without using excessively large number of grid cells.The model utilizes a residual equation rather than a wellbore equation to determine the flow rates into the cavity and hydraulic fracture. Both cavity completions and hydraulic fractures are approximated as a combination of fine rectangular grid blocks. The constructed fine grid lines are terminated at the coarse and fine grid block interfaces by implementing the LGR technique developed. The generated flow equations for fine and coarse blocks are, then, solved simultaneously.Flow performances of cavity completions and hydraulic fractures are compared for various coal seam permeabilities. It is demonstrated that permeability damage during fracturing may have significant impact on the flow performance of the hydraulic fracture. Hydraulic fractures without permeability damage associated perform better than cavity completions if permeability contrast in the coal seam is not significant. In strongly anisotropic systems, however, even if there is no formation damage due to fracturing fluid, cavity completions outperform hydraulic fractures.

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Cavity Completion For Coalbed Methane Stimulation - An Integrated Investigation And Trial In The Bowen Basin, Queensland

Cited by 15 publications

References 11 publications

Technology review of the Northern Bowen and Galilee basins

Technology review of the Northern Bowen and Galilee basins

Enhanced Production in Horizontal Wells by the Cavity Failure Well Completion

A Comparative Analysis of the Production Characteristics of Cavity Completions and Hydraulic Fractures in Coalbed Methane Reservoirs

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