Results of the development system optimization and increasing the efficiency of carbonate reserves extraction of the turney stage of the Chetyrmansky deposit

Khisamiev, T. R.; Bashirov, I. R.; Mukhametshin, V. Sh; Кулешова, Л. С.; Yakupov, R. F.; Vagizov, A. M.

doi:10.5510/ogp2021si200598

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Известно, что степень извлечения нефти из недр определяется особенностями геологического строения [1][2][3][4][5] и применяемыми технологиями разработки [6][7][8][9] залежей.…”

Section: Introductionunclassified

Oil flooding in carbonate reservoirs management

Mukhametshin¹

2022

SOCAR Proceedings

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The article presents the analysis and generalization of the process of deposits flooding in the carbonate reservoirs of the Tournaisian stage Kizelovsky horizon of one relatively homogeneous group of fields of the Volga-Ural oil and gas province which was carried out in order to obtain the possibility of increasing the water injection managing efficiency into the reservoir to increase the oil recovery. Geological and physical parameters having a predominant effect on the sweeping efficiency and the injectivity profile variation along the thickness in injection wells have been identified. Models making it possible to assess and predict the injection sweep factor and variation of the injectivity profile by thickness using current geological and field information both at the stage of putting fields into development and at the stage of full drilling out of deposits have been obtained. The obtained results are proposed to be used to improve the development management efficiency both at the objects of study themselves and at analogue deposits. Keywords: development management; carbonate reservoir; flooding; multivariate models; injection sweep ratio; correlation coefficient; injectivity profile.

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Section: Introductionunclassified

Oil flooding in carbonate reservoirs management

Mukhametshin¹

2022

SOCAR Proceedings

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“…Известно, что большинство нефтяных месторождений характеризуются многопластовостью [1][2][3][4][5][6][7][8], что требует для повышения степени выработки запасов, проведения надежного контроля и регулирования процесса разработки, выделения пластов и групп в самостоятельные эксплуатационные объекты [9][10][11][12].…”

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Reservoir waters and based on them heavy brines application in oil production

Kadyrov¹,

Rabaev²,

Mukhametshin³

et al. 2022

SOCAR Proceedings

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Geological Structure Features of Carbonate Formations and Their Impact on the Efficiency of Developing Hydrocarbon Deposits

2022

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The development of deposits with a complex geological structures is often accompanied by a set of problems associated with optimal decision making. The efficiency of the entire development system depends on the completeness and the quality of the analysis of reservoir parameters. This paper presents methodological approaches for the study of carbonate deposits, and the development of further steps to increase the efficiency of reserve recovery. The secondary transformation of reservoir rocks, resulting in channels of increased conductivity, cracks, and caverns, plays a special role in the nature of the recovery of hydrocarbon reserves from such deposits. Secondary cavernosity leads to violations of the linear laws of fluid filtration in a porous medium, and complicates the field performance prediction based on geological and hydrodynamic modeling. The studied geological structure was detailed using the example of carbonate deposits composed of oil and water- saturated formations, taking into account the results of core studies and the interpretation of geophysical well studies. Furthermore, the parameters of production wells made it possible to confirm that the oil saturated and underlying water saturated formations have hydrodynamic connectivity due to the presence of vertical micro cracks. At the same time, the thickness of the bridge between the reservoirs directly affects the initial water cutting of well production, and further growth dynamics of the water ratio are associated with the structural factors determining the initial oil content of the reservoir. The combination of the obtained dependencies and the distribution model of the reservoir properties along the area made it possible to build a complex map reflecting the predicted development efficiency in certain areas. The integration of the results of various field studies on the injection well stock established that a significant part of the water flows was injected into the water saturated formation, which reduces the efficiency of formation pressure maintenance in the target formation. As a result, in order to reduce the low efficiency injection volume, switching to a more rigid waterflooding system, in terms of the ratio of production and injection wells, is proposed with a further decrease in the injection pressure inside the wells.

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Results of the development system optimization and increasing the efficiency of carbonate reserves extraction of the turney stage of the Chetyrmansky deposit

Cited by 3 publications

References 7 publications

Oil flooding in carbonate reservoirs management

Oil flooding in carbonate reservoirs management

Reservoir waters and based on them heavy brines application in oil production

Geological Structure Features of Carbonate Formations and Their Impact on the Efficiency of Developing Hydrocarbon Deposits

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