METHOD OF STRUCTURAL REINFORCEMENT OF TERRIGENOUS RESERVOIR (EMBODIMENTS) Russian patent published in 2024 - IPC E21B33/138 

FIELD: oil, gas and coke-chemical industry.

SUBSTANCE: group of inventions relates to oil and gas industry, in particular to methods of supporting productive formations in wells of underground gas storages and gas deposits. When implementing the method, the bottom-hole zone of the reservoir bed is prepared for reinforcement by pumping a flush and adhesive spacer fluids in amount of 50% of the volume of the main reinforcing composition, pumped for the main treatment of the bottomhole zone of the reservoir. Then one-layer or two-layer reinforcement of bottomhole zone of reservoir bed is performed. “Полискреп” two-component organosilicon composition is used as the main reinforcing composition. Adhesive buffer fluid used is “Полирир НФ-А” composition with addition of 1% of the second component of the above “Полискреп” composition. “Полирир НФ-АС” composition is used as flushing buffer liquid. First reinforcement layer is produced by the main reinforcing compound with natural gas or nitrogen flushing into the reservoir bed. Second layer of reinforcement is made with “Полискреп-С” organosilicon composition in amount of 30–40% of the volume of the “Полискреп” main reinforcing composition, with gas or nitrogen flushing into the formation. Prior to injection of said compositions, bottom-hole zone of reservoir bed is pre-purged with nitrogen or natural gas, after injection of each of the above compositions, the bottom-hole zone of the reservoir bed is blown, and then final blowdown of the bottom-hole zone of the bed-bed with nitrogen or natural gas is performed.

EFFECT: higher strength of bottomhole zone of reservoir bed, reduced water saturation of reservoir bed.

2 cl, 4 dwg