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Vol 272
Pages:
119-135
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RUS ENG

Well killing with absorption control

Authors:
Danabek S. Saduakasov1
Akshyryn T. Zholbasarova2
Ryskol U. Bayamirova3
Aliya R. Togasheva4
Maksat T. Tabylganov5
Manshuk D. Sarbopeeva6
Aktoty G. Kasanova7
Viktor N. Gusakov8
Aleksei G. Telin9
About authors
  • 1 — Ph.D. Acting Associate Professor S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 2 — Ph.D. Acting Associate Professor S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 3 — Ph.D. Acting Associate Professor S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 4 — Ph.D. Acting Associate Professor S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 5 — Ph.D. Acting Associate Professor S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 6 — Ph.D. Acting Associate Professor S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 7 — Ph.D. Doctoral Student S.Yessenov Caspian University of Technologies and Engineering ▪ Orcid
  • 8 — Ph.D. Deputy Director for Research Institute of Petrochemistry and Catalysis, UFRC RAS ▪ Orcid
  • 9 — Ph.D. Deputy Director for Research Ufa Scientific and Technical Center LLC ▪ Orcid
Date submitted:
2024-03-29
Date accepted:
2024-11-07
Online publication date:
2025-02-26
Date published:
2025-04-25

Abstract

The development of new fields with low-permeability reservoirs required the introduction of new production technologies, of which the most significant for well killing and underground repair were multi-ton hydraulic fracturing, the simultaneous operation of two or three development sites by one well grid, and an increase in the rate of fluid extraction. These global decisions in field development have led to the need to search for new effective materials and technologies for well killing. The article is devoted to the analysis of problems associated with the process of killing production wells in fields characterized by increased fracturing, both natural and artificial (due to hydraulic fracturing), with reduced reservoir pressure and a high gas factor. The relevance of the analysis is due to the increase in the number of development sites where complications arise when wells are killed. Particular attention is paid to technical solutions aimed at preserving the filtration and capacity properties of the bottomhole formation zone, preventing the absorption of process fluid, and blocking the manifestation of gas. The classification of block-packs used in killing is given, based on the nature of the process fluid. Suspension thickened water-salt solutions are considered, forming a waterproof crust on the surface of the rock, which prevents the penetration of water and aqueous solutions into the formation. This approach ensures the safety and efficiency of killing operations, especially when working with formations in which maintaining water saturation and preventing the ingress of the water phase are of critical importance. Modern trends in the development of technology are revealed, and promising areas for further improvement of well killing with absorption control are outlined.

Область исследования:
Geotechnical Engineering and Engineering Geology
Keywords:
well killing well repair blocking compound filtration absorption control rheological properties
Go to volume 272

Funding

The work was carried out with the support of the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (grant N AP19679430).

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