A new insight for reliable interpretation and design of injection tests

Verga, Francesca; Viberti, Dario; Borello, Eloisa Salina

doi:10.1016/j.petrol.2011.05.002

Cited by 19 publications

(9 citation statements)

References 17 publications

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“…Well testing is a valuable source of information on reservoir properties and a lot of work has been done and is being performed in this realm (Kruseman and Ridder, 1990;Horne, 1995;Fetter, 2001;Bourdet, 2002;Gringarten, 2008;Fokker et al, 2005;Beretta et al, 2007;Benetatos and Viberti, 2010;Viberti, 2010;Verga et al, 2011;Cancelliere and Verga, 2012). Two issues remain which need further attention in well test analysis: the inclusion of reservoir heterogeneity and the treatment of rate variations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

Fokker¹,

Renner²,

Verga³

2013

American Journal of Environmental Sciences

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This study investigated how to utilize multiple frequency components of pressure data from periodic pulse tests to estimate the intra-well permeability and compressibility distribution and also the presence of heterogeneities in a real field case. Periodic well testing is a technique in which injection or production pulses of a fluid are applied to a well in a periodic fashion. One of its main advantages is that ongoing operations do not have to be interrupted during the test as the superposed harmonic components can be identified using Fourier analysis. Further, modeling calculations are much faster than calculations in the time domain as no time-stepping is required and only the frequencies observed in the test need to be evaluated. We applied an earlier developed numerical code in the frequency domain to evaluate periodic-test results in a shallow aquifer and obtained a good match between data and calculations. The interpreted formation heterogeneity is in line with the local geology. Joints of various orientations constitute the main hydraulic conduits of the tested subsurface but they do not directly connect the wells. Thus communication between the wells has to be established through low-permeability features. The interwell periodic testing has corroborated the geological understanding of the aquifer and helped understanding the fluid flow pattern.

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Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

Fokker¹,

Renner²,

Verga³

2013

American Journal of Environmental Sciences

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“…An injection test consists in injecting, rather than producing, a fluid in a potential reservoir zone and in monitoring the pressure response. Except for fluid sampling, injection tests can provide the same information as conventional tests [44,45]. This methodology is easily applied to UGS because gas injection is the very essence of gas storage and the critical issues that can arise when injecting a fluid which is immiscible with the reservoir fluid are removed [46].…”

Section: Well Testingmentioning

confidence: 99%

What’s Conventional and What’s Special in a Reservoir Study for Underground Gas Storage

Verga

2018

Energies

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Abstract:The development of an underground gas storage (UGS) project and its subsequent management must ensure technical feasibility, commercial value and long-term efficiency. The UGS industry has borrowed much of its knowledge from other disciplines (primarily oil and gas reservoir engineering), but it has also developed its own technology. This paper provides a methodological approach based on current practices and available methods for designing and safely operating a UGS (including the so-called "delta-pressure" option to enhance UGS performance) and highlights what is special in UGS compared to oil and gas reservoirs.

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“…An injection test consists in injecting, rather than producing, a fluid in a potential reservoir zone and in monitoring the pressure response. Except for fluid sampling, injection tests can provide the same information as conventional tests [42,43]. This methodology is easily applied to UGS because gas injection is the very essence of gas storage and the critical issues that can arise when injecting a fluid which is immiscible with the reservoir fluid are removed [44].…”

Section: Well Testingmentioning

confidence: 99%

What’s Conventional and what’s Special in a Reservoir Study for Underground Gas Storage

Verga¹

2018

Preprint

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A new insight for reliable interpretation and design of injection tests

Cited by 19 publications

References 17 publications

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

What’s Conventional and What’s Special in a Reservoir Study for Underground Gas Storage

What’s Conventional and what’s Special in a Reservoir Study for Underground Gas Storage

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A new insight for reliable interpretation and design of injection tests

Cited by 19 publications

References 17 publications

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

What’s Conventional and What’s Special in a Reservoir Study for Underground Gas Storage

What&rsquo;s Conventional and what&rsquo;s Special in a Reservoir Study for Underground Gas Storage

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What’s Conventional and what’s Special in a Reservoir Study for Underground Gas Storage