Utilizing Mini-DST for Formation Evaluation

Coelho, Antonio Carlos Decnop; Camargo, Christiane de; Kato, Edson Tsuneo; Legrand, Vania Maria

doi:10.2118/94963-ms

Cited by 35 publications

(6 citation statements)

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“…A valid contribution to the review and discussion of technologies such as wireline formation tests, closed chamber tests, production/reinjection tests and injection tests as viable alternatives to conventional well testing can be found in the technical literature (Coelho et al, 2005;Woie et al, 2000;El-Khazindar et al, 2002;Hollaender et al, 2002;Banerjee et al, 1998;Beretta et al, 2006;2007).…”

Section: Methodsmentioning

confidence: 99%

“…Well tests have been widely used for several decades in the oil industry for estimation of reservoir characteristics such as initial pressure, fluid type, effective permeability and identification of reservoir barriers or boundaries in the formation volume investigated by the test (Coelho et al, 2005). Information collected during well testing usually consists of flow rates, pressure and temperature data, in addition to fluid samples (Woie et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Green Methodologies to Test Hydrocarbon Reservoirs

Verga¹

2010

American Journal of Environmental Sciences

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Problem statement:The definition and the economic viability of the best development strategy of a hydrocarbon reservoir mainly depend on the quantity and type of fluids and on the well productivity. Well testing, consisting in producing hydrocarbon to the surface while measuring the pressure variations induced in the reservoir, has been used for decades to determine the fluid nature and well potential. In exploration and appraisal scenarios the hydrocarbons produced during a test are flared, contributing to the emissions of greenhouse gases. Approach: Due to more stringent environmental regulations and a general need for reduced operating expenses, the current industry drivers in today's formation evaluation methodologies demand short, safe, cost-effective and environmentally friendly test procedures, especially when conventional tests are prohibitively expensive, logistically not feasible or no surface emissions are allowed. Different methods have been proposed or resuscitated in the last years, such as wireline formation tests, closed chamber tests, production/reinjection tests and injection tests, as viable alternatives to conventional well testing. Results: While various short-term tests, test procedures and interpretation methods are apparently available for conducting successful tests without hydrocarbon production at the surface, clarity is lacking for specific applications of these techniques. An attempt to clarify advantages and limitations of each methodology, particularly with respect to the main testing target is pursued in this study. Specific insight is provided on injection testing, which is one of the most promising methodology to replace traditional well testing in reservoir characterization, except for the possibility to sample the formation fluids. Conclusion/Recommendations: Not a single one method but a combination of more methodologies, in particular injection testing and wireline formation testing, is the most promising strategy to achieve all the targets of a conventional well testing with no surface hydrocarbon production, increased safety during operations and reduction of the testing costs

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green Methodologies to Test Hydrocarbon Reservoirs

Verga¹

2010

American Journal of Environmental Sciences

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“…Well tests have been widely used for several decades in the oil industry for the evaluation of reservoir characteristics, which are key information for field development and facilities design [16][17][18][19][20][21]. However, the UGS industry has some specific requirements, such as:…”

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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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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“…Well tests have been widely used in the oil industry for several decades to estimate reservoir characteristics as the initial pressure, fluid type and effective permeability as well as to identify reservoir barriers or boundaries in the formation volume investigated by the test (Coelho et al, 2005). Conventional well testing methods usually involve surface production of fluids.…”

Section: Reservoir Characterization and Data Acquisitionmentioning

confidence: 99%

Environmental Sustainability of Oil Industry

Rocca¹

2013

American Journal of Environmental Sciences

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Similarly to most industrial activities, the oil industry can affect the environment at several stages. The greatest impact is the release of waste into the environment in concentrations that are not natural. Virtually in all cases, the adverse impact can be minimized or eliminated through the implementation of a proper waste management plan. Over the past few years the oil industry has placed greater emphasis on minimizing the environmental impact of its operations in all the main phases of a hydrocarbon reservoir life: from appraisal to field development, from production and recovery to reservoir decommissioning. As a consequence, the oil industry is facing important technical challenges, approaching with great interest and expectation new emerging technologies, such as nanotechnologies and alternative solutions, like CO 2 underground storage. This study provides an overview of the most interesting solutions that have been proposed and critically highlights their potential benefits and drawbacks. The following paper focuses on some of the new approaches that have already changed the routine operation workflow, while others are currently being tested and may yet require further improvement.

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Utilizing Mini-DST for Formation Evaluation

Abstract: TX 75083-3836, U.S.A., fax 01-972-952-9435.This work presents the mini-DSTs currently performed at Petrobras, indicating the operational and interpretation difficulties in order to highlight their actual applicability.

Cited by 35 publications

References 6 publications

Green Methodologies to Test Hydrocarbon Reservoirs

Green Methodologies to Test Hydrocarbon Reservoirs

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

Environmental Sustainability of Oil Industry

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Utilizing Mini-DST for Formation Evaluation

Abstract: TX 75083-3836, U.S.A., fax 01-972-952-9435.This work presents the mini-DSTs currently performed at Petrobras, indicating the operational and interpretation difficulties in order to highlight their actual applicability.

Cited by 35 publications

References 6 publications

Green Methodologies to Test Hydrocarbon Reservoirs

Green Methodologies to Test Hydrocarbon Reservoirs

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

Environmental Sustainability of Oil Industry

Contact Info

Product

Resources

About

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