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Selection of the optimal formulation of the biopolymer system for the stimulation of productive formations

Author

Listed:
  • Viktoria Rubel

    (National University «Yuri Kondratyuk Poltava Polytechnic»)

  • Roman Slichenko

    (National University «Yuri Kondratyuk Poltava Polytechnic»)

Abstract

The object of study in this paper is the biopolymer system «X» – a complex composition that includes a biopolymer, salts and a thermal stabiliser intended for use in drilling fluids at high temperatures. The components of the formulation include complex reagent «X» for regulating structural, mechanical, rheological and filtration properties, as well as inhibitors (sodium and potassium chloride) and filler. Components of the biopolymer system (sodium chloride, organo-mineral colmatant thermal stabiliser) increase its thermal stability.One of the most problematic areas is the mechanism of sodium chloride's thermal stabilising effect. It is associated with an increase in the overall mineralisation of the drilling mud, which leads to a certain conformation of biopolymer molecules, accelerates gelation processes and counteracts the temperature dilution of the system.The results obtained can be explained as follows:– an increase in the concentration of sodium chloride leads to an increase in the ionic strength of the solution, which contributes to a change in the conformation of biopolymer molecules, enhancing intermolecular interactions and, as a result, increasing the viscosity and stability of the system;– the organo-mineral colmatant heat stabiliser promotes the formation of a filtration crust on the well walls, which prevents fluid loss and reduces rock permeability;– all components of the system interact with each other, affecting the properties of the solution. The optimum ratio of components allows achieving the required rheological characteristics and ensuring the stability of the system at high temperatures.As a result of processing the information on technologies for tapping productive horizons, the disadvantages and advantages of each of them were noted. The existing drilling fluid systems used to tap productive horizons at high temperatures were considered. However, more attention was paid to the selection of a new optimal formulation of the biopolymer system, in accordance with the specified rheological and structural and mechanical properties for further implementation in practice.This ensures the possibility of obtaining predictive parameters of the drilling mud.The proposed system has a number of advantages over similar ones, namely:– the system retains its properties at high temperatures;– the system provides the required values of viscosity, filtration and static shear stress;– due to the use of an optimal formulation, high efficiency is achieved at a relatively low cost.

Suggested Citation

  • Viktoria Rubel & Roman Slichenko, 2024. "Selection of the optimal formulation of the biopolymer system for the stimulation of productive formations," Technology audit and production reserves, PC TECHNOLOGY CENTER, vol. 5(1(79)), pages 57-61, October.
  • Handle: RePEc:baq:taprar:v:5:y:2024:i:1:p:57-61
    DOI: 10.15587/2706-5448.2024.314230
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