Research of the water-pressure system small show influence on the material balance reliability

Matkivskyi, Serhii; Kovalchuk, Sergey I.; Burachok, Oleksandr; Kondrat, O. R.; Хайдарова, Л. І.

doi:10.31471/1993-9973-2020-2(75)-43-51

Cited by 8 publications

(3 citation statements)

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“…The overwhelming majority of productive deposits of gas and gas condensate fields are depleted and are mainly influenced by water-pressure systems and are developed in conditions of the movement of formation water into gas-saturated horizons [1,2].…”

Section: Introductionmentioning

confidence: 99%

Approval of the technology of carbon dioxide injection into the V-16 water driven reservoir of the Hadiach field (Ukraine) under the conditions of the water pressure mode pages 1–2

Krivulya¹,

Matkivskyi

Kondrat

et al. 2020

TAPR

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The object of research is water-driven gas-condensate reservoirs. Using the main hydrodynamic modeling tools Eclipse and Petrel from Schlumberger (USA), the study was carried out to improve the existing technologies for the displacement of residual gas reserves by carbon dioxide from the water-driven gas-condensate reservoirs. The carbon dioxide injection technology was tested in the V-16 reservoir of the Hadiach oil and gas condensate field (Ukraine). According to the study results, it was found that due to the injection of non-hydrocarbon gas, the cumulative water production are reduced compared to the depletion. Based on the obtained modeling results, the calculation of the predicted hydrocarbon recovery factors at the moment of carbon dioxide breakthrough into the production well was carried out according to the cumulative formation water production. According to the calculations, it was found that the implementation of the enhanced gas recovery technology provides significantly higher ultimate hydrocarbon recovery compared to the depletion. The predicted gas recovery factor when injecting carbon dioxide into the V-16 reservoir increases by 2.95 % of the residual gas reserves, and the condensate recovery factor for these conditions by 1.24 %. Based on the study results, the technological efficiency of using carbon dioxide as an injection agent to increase the hydrocarbon recovery from water-driven reservoirs was established. According to the simulation results, the implementation of the technology of carbon dioxide injection into the V-16 reservoir of the Hadiach oil and gas condensate field can significantly increase the hydrocarbon recovery from the deposit, thereby increasing the production capacity of the field.

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Section: Introductionmentioning

confidence: 99%

Approval of the technology of carbon dioxide injection into the V-16 water driven reservoir of the Hadiach field (Ukraine) under the conditions of the water pressure mode pages 1–2

Krivulya¹,

Matkivskyi

Kondrat

et al. 2020

TAPR

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confidence: 99%

“…Introduction. Gas and gas condensate reservoirs are often connected to waterpressure systems and are developed under water-drive [1]. The difficulty of extracting residual gas reserves in conditions of the inflow of formation water into productive deposits is associated with the watering of gas-saturated formations and wells.…”

mentioning

confidence: 99%

Aspects of Regulationion the Process of Formation Water Inflow Into Heterogeneous Gas Condensate Reservoirs Using of Non-Hydrocarbon Gases

Matkivskyi¹,

Khaidarova²,

Ковальчук³

2021

DÉBATS SCIENTIFIQUES ET ORIENTATIONS PROSPECTIVES DU DÉVELOPPEMENT SCIENTIFIQUE - Volume 1

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Introduction. Gas and gas condensate reservoirs are often connected to waterpressure systems and are developed under water-drive [1]. The difficulty of extracting residual gas reserves in conditions of the inflow of formation water into productive deposits is associated with the watering of gas-saturated formations and wells.A significant number of experimental and theoretical studies are devoted to the design of a rational system for the development of water-driven hydrocarbon reservoirs [2][3].Based on the results of the studies, the mechanism of behavior of gas trapped by formation water in a porous medium was revealed. It was also found that the nature of the distribution of the reservoir properties of the reservoir introduces significant uncertainty in the process of substantiating the optimal technology for further field development under an active water-drive. It is the heterogeneity of productive formations, both in area and in thickness, which plays a decisive role in the selection and implementation of the developed technologies for enhancing recovery.Objective. Investigation of the influence of productive reservoir heterogeneity on formation water inflow during injection of carbon dioxide at the initial gas-water contact using a different number of injection wells.Results and discussion. Nowadays the direction of EOR in gas and gas condensate fields by injecting non-hydrocarbon gases (nitrogen, carbon dioxide, flue and waste gases, mixtures of various gases) remains promising [4][5].One of the most successful technologies for increasing the production of residual gas and reducing the activity of the water system is the injection of CO2 into the reservoir. According to the studies carried out, it was found that due to the

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The influence of nitrogen injection duration at the initial gas-water contact on the gas recovery factor

Matkivskyi

2021

EEJET

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This paper reports a study that employed a digital three-dimensional model of the gas condensate reservoir to investigate the process of nitrogen injection at the boundary of initial gas-water contact at different values of the injection duration. The calculations were performed for 5, 6, 8, 10, 12 and 14 months injection duration. Based on the modeling results, it was found that increasing the duration of the nitrogen injection decreases the operation time of production wells until the breakthrough of non-hydrocarbon gas. Based on the analysis of the technological indicators of reservoir development, it was established that the introduction of technology of the nitrogen injection into a reservoir ensures a reduction in the volume of reservoir water production. The cumulative water production at the time of nitrogen breakthrough to the production wells at the nitrogen injection duration of 5 months is 197,3 thousand m3; of 14 months – 0,038 m3. According to the results from the statistical treatment of estimation data, the optimal value for the nitrogen injection duration was determined, which is 8,04 months. The ultimate gas recovery factor for the optimal period of the non-hydrocarbon gas injection is 58,11 %, and in the development of a productive reservoir for depletion – 34,6 %. Based on the research results, the technological efficiency of nitrogen injection into a productive reservoir has been determined at the boundary of initial gas-water contact in order to slow the movement of reservoir water into gas-saturated horizons. This study results allow the improvement of the existing technologies of hydrocarbon fields development under conditions of water drive. The use of the results of the research carried out in production will make it possible to reduce the volume of cumulative water production and increase the ultimate gas recovery factors to 23,51 %

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Research of the water-pressure system small show influence on the material balance reliability

Cited by 8 publications

References 0 publications

Approval of the technology of carbon dioxide injection into the V-16 water driven reservoir of the Hadiach field (Ukraine) under the conditions of the water pressure mode pages 1–2

Approval of the technology of carbon dioxide injection into the V-16 water driven reservoir of the Hadiach field (Ukraine) under the conditions of the water pressure mode pages 1–2

Aspects of Regulationion the Process of Formation Water Inflow Into Heterogeneous Gas Condensate Reservoirs Using of Non-Hydrocarbon Gases

The influence of nitrogen injection duration at the initial gas-water contact on the gas recovery factor

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