Comprehensive laboratory studies of hydraulic fracturing fluid based on domestic polyacrylamide as an alternative to imported reagents used in hydraulic fracturing at facilities in Eastern Siberia

UDK: 622.276.66.002.34

DOI: 10.24887/0028-2448-2026-1-85-89

Key words: hydraulic fracturing, hydraulic fracturing, borehole, reservoir, laboratory studies, polyacrylamide (PAM), hydraulic fracturing fluid, synthetic gel, filtration and capacitive properties

Authors: A.S. Samoilov (Industrial University of Tyumen, RF, Tyumen); V.A. Votchel (Industrial University of Tyumen, RF, Tyumen); A.A. Malyshkin (Industrial University of Tyumen, RF, Tyumen); A.S. Parekha (Industrial University of Tyumen, RF, Tyumen); D.V. Akinin (Gazprom Dobycha Irkutsk LLC, RF, Irkutsk); V.V. Sokovikov (Gazprom Dobycha Irkutsk LLC, RF, Irkutsk); I.N. Glyzin (Gazprom Dobycha Irkutsk LLC, RF, Irkutsk); R.R. Khasanov (Gazprom Dobycha Irkutsk LLC, RF, Irkutsk); D.A. Staritsin (Gazprom Neft Companу Group, RF, Saint Petersburg)

Hydraulic fracturing is a key technology for increasing the productivity of oil and gas wells. The fracturing fluid plays a crucial role in the efficiency of hydraulic fracturing, which properties affect the geometry of the crack, the design parameters of the treatment, the residual permeability of the propane pack and reservoir, the technological success of the operation, and the predicted efficiency of the work performed. The article presents the results and an assessment of the prospects for the use of hydraulic fracturing fluid based on polyacrylamide (PAM) of domestic production. The scientific novelty of the work lies in a comprehensive experimental approach, including rheological assessment of the liquid, filtration studies of the propane pack, and filtration tests of core from one of the deposits in Eastern Siberia before and after exposure to the studied fracturing fluid. It was established that the modified PAM of domestic production is characterized by a controlled rate of hydration, increased stability and high sand-bearing capacity compared to the previously used guaro-borate systems. It is shown that the coefficient of conductivity recovery of the propane pack after exposure to PAM liquid is 28 % higher compared to the guaro-borate system. The advantages of the system under consideration include a simplified formulation, minimizing the negative impact on the reservoir and propane, as well as reducing the risk of unwanted crack growth in height. The results obtained substantiate the expediency of using domestic PAM as an alternative to imported reagents during hydraulic fracturing at facilities of Gazprom PJSC.

References

1. URL: http://rosfloc.ru/?ysclid=mfpf5hfdox710663087

2. Samoylov A.S., Votchel’ V.A., Sokolov A.F., Parekha A.S., Determination of optimal formulations of hydraulic fracturing fluids for conditions of low reservoir temperatures of the Vendian sediments based on laboratory studies (In Russ.), Neftepromyslovoe delo, 2024, no. 11(671), pp. 38-48.

3. M-01.04.03.03-08. Kontrol’ kachestva zhidkostey GRP na osnove VVSG (Quality control of hydraulic fracturing fluids based on high-viscosity synthetic gelling agents), St. Petersburg: Publ. of Gazpromneft, 2023.

4. Samoylov A.S., Votchel’ V.A., Parekha A.S. et al., Determination and testing of optimal formulations of hydraulic fracturing fluids for reservoirs with a high content of montmorillonite clays (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2024, no. 11, pp. 114–118, DOI: https://doi.org/10.24887/0028-2448-2024-11-114-118

5. GOST 26450.2-85. Rocks. Method for determination of absolute gas permeability coefficient by stationary and non-stationary filtration.

6. Kolesnik S.V., Efimov M.E., Intensification of oil production through the use of hydraulic fracturing fluid based on polyacrylamide (In Russ.), Neftepromyslovoe delo, 2023, no. 9(657), pp. 43–47.