Method for Solving Problems of Gas Production from Turonian Reservoirs

Abstract

Abstract It is shown that hydrophilic (inhibitor) and hydrophobic (hydrophobizing) compositions are able to increase the permeability of the bottom-hole zone of the clay Turonian formation and prevent the formation (and, if necessary, destroy) gas hydrates in the bottom-hole zone of the formation. Hydrophilic and hydrophobic compositions contain solvents (methanol or petroleum ether) that are easily removed by the gas flow, and active non-volatile components (ABR or magnesium chloride) that remain in the formation. The use of "active substance + volatile solvent" compositions allows to have a long-term effect on the reservoir Bottom-hole formation zone (BHFZ) and easily remove liquids from the gas formation by gas flow. The use of hydrophobic compositions and fluids is promising in the production of oil and gas from clay reservoirs (Cenomanian, Turon, Senon, Bazhenov and Tyumen formations, etc.).