Determination and testing of optimal formulations of hydraulic fracturing fluids for reservoirs with a high content of montmorillonite clays

UDK: 622.276.66.002.34

DOI: 10.24887/0028-2448-2024-11-114-118

Key words: core material, montmorillonite, hydration, filtration and capacitive properties, hydraulic fracturing, reservoir, proppant, process fluid, hydrocarbon intensification, hydraulic fracturing fluid, rheology, inhibitor, permeability, well, reservoir, gas

Authors: A.S. Samoilov (Industrial University of Tyumen, RF, Tyumen); V.A. Votchel(Industrial University of Tyumen, RF, Tyumen); A.S. Parekha (Gazprom VNIIGAZ LLC, RF, Moscow); I.O. Malyshev (Industrial University of Tyumen, RF, Tyumen); T.N. Tukmakova (Industrial University of Tyumen, RF, Tyumen); A.V. Shvarts (Industrial University of Tyumen, RF, Tyumen)

An urgent and at the same time challenging task today is the extraction of hydrocarbons from unconventional target horizons, which include the Senonian deposits, which are an important and strategically significant objects with natural gas reserves. Successful implementation of such tasks will increase hydrocarbon production and ensure the country’s energy security. Hydrocarbon reserves of the Senonian deposits are considered hard to recover due to the significant heterogeneity of the deposit with low permeability and the presence of clays in the rock composition. The gas presence of the Senonian deposits is widespread in the northern regions of the West Siberian oil and gas basin. Senon deposits are gas bearing at Medvezhye, Tazovsky, Zapolyarnoye, Yamburgsky, Kharampursky, Lensky, Festivalny, Komsomolsky, Bovanenkovsky, Yamsoveysky, Yubileyny and other fields. Using the example of one of the fields, the stage of selecting an effective hydraulic fracturing fluid that does not degrade the strength and filtration and capacitive properties of rocks of the Nizhneberezovskaya substructure is considered, followed by an assessment during the hydraulic fracturing technology. The aim of the work is to determine the influence of various fluids on the clay component of Senonian deposits. The article presents the results of studies using the rock swelling technique, which contribute to increasing the efficiency of hydraulic fracturing in wells of Senonian deposits.

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