Fuentes, el reventón energético

Vol. 21 No. 2 (2023): Fuentes, el reventón energético
Articles

METHODOLOGY FOR SELECTING CANDIDATE WELLS FOR CHEMICAL CONFORMANCE TREATMENTS

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  • Daniel M. Rojas,
  • Mauricio Gutierrez,
  • Danuil E. Dueñas,
  • Monica A. Martinez,
  • Samuel Valovis,
  • Fernando W. Londoño,
  • Carlos J. Valencia,
  • Andrey F. Salamanca,
  • Juan C. Vargas,
  • Aramis Visbal,
  • Sady S. Salazar,
  • Sergio A. Celis,
  • Diego F. Leon,
  • Cindy N. Isaza,
  • Leidy L. Alvarez,
  • Francisco J. Amado,
  • Rubén H. Castro
Daniel M. Rojas
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Mauricio Gutierrez
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Danuil E. Dueñas
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Monica A. Martinez
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Samuel Valovis
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Fernando W. Londoño
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Carlos J. Valencia
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Andrey F. Salamanca
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Juan C. Vargas
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Aramis Visbal
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Sady S. Salazar
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Sergio A. Celis
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Diego F. Leon
Ecopetrol, Gerencia General de Desarrollo, 111711, Bogotá, Colombia.
Cindy N. Isaza
Meridian Consulting LTDA, 110221, Bogotá, Colombia.
Leidy L. Alvarez
Meridian Consulting LTDA, 110221, Bogotá, Colombia.
Francisco J. Amado
Meridian Consulting LTDA, 110221, Bogotá, Colombia.
Rubén H. Castro
Meridian Consulting LTDA, 110221, Bogotá, Colombia.
DOI: https://doi.org/10.18273/revfue.v21n2-2023005

Published 2023-11-27

How to Cite

Rojas, D. M., Gutierrez, M., Dueñas, D. E., Martinez, M. A. ., Valovis, S., Londoño, F. W., Valencia, C. J., Salamanca, A. F., Vargas, J. C., Visbal, A., Salazar, S. S., Celis, S. A., Leon, D. F., Isaza, C. N., Alvarez, L. L., Amado, F. J., & Castro, R. H. (2023). METHODOLOGY FOR SELECTING CANDIDATE WELLS FOR CHEMICAL CONFORMANCE TREATMENTS. Fuentes, El reventón energético, 21(2), 61–83. https://doi.org/10.18273/revfue.v21n2-2023005
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Channeling is generally a consequence of reservoir heterogeneity, especially due to large permeability variations, causing a reduction in volumetric efficiency as a product of the fluid injected recirculation in secondary and/or enhanced recovery (EOR) processes. For improving the vertical injection profile and reducing the recirculation of water injected, in Colombia, from 2008 to 2020, 33 deep chemical conformance and channeling control treatments have been implemented in nine fields for increasing the volumetric sweep efficiency to increase oil recovery factor. The result of the reported treatments is up to 3 barrels of incremental oil for each barrel of bulkgel injected. However, the number of conformance treatments is low compared to the number of wells injection in the country of approximately 1400).

Therefore, Ecopetrol adapted a methodology for selecting candidate wells for chemical conformance treatments that include reservoir continuity, determination and characterization of heterogeneity, fluid movement study, determination of connectivity of the injection pattern, vertical and areal distribution of the injected and produced fluids, generation of diagnostic graphics in Sahara software to finally identify the candidate wells and design the conformance treatment

The construction of the diagnostic graphics, base of the methodology, beginning with vertical distribution of secondary production with the Injection Withdrawal Ratio IWR (allocation of productions), in which the well production is distributed to the injector wells that affect, and this production is associated with each injector.

According with the areal distribution, flow elements are generated with dynamic meshes centered on the injector and weighted using the angular distribution. The secondary production distribution includes the ILT/PLT, meshing and distribution coefficients of the injection patterns over time.

In the present work, a description and application of the integrated methodology is presented that allows identifying the production of oil and water per reservoir in each injection pattern, as well as the efficiency of the injected water to visualization actions to improve oil production and decrease of water production, with the objective of identifying the sectors with lower performance and needs to optimization of the secondary and/or tertiary process. The methodology was validated and complemented with information from interwell tracers (IWTT) and numerical simulation with streamline. Therefore, conformance treatments have been applied since 2021 in 23 new wells with promising results of incremental oil production.

The selection of candidate wells for chemical conformance treatments expands the expectations of widespread use of these technologies in different fields of the country and becomes a fundamental piece to leverage the achievement of reserves and a reduction in the carbon footprint mainly due to the fact that with the same The flow of fluid injected increases oil production and in some treatments it can reduce water production, ensuring lower energy consumption (CO2) for each barrel of oil produced.

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