Reservoir Self-supported Cavitation Stimulation Process Technology

With the deepening of oilfield development work, the development contradictions have become increasingly complex and changeable. The fracturing stimulation measures are restricted by in-situ stress, and the energy enhancement and blockage relief measures are affected by the construction scale. The applicability of the process is somewhat limited, and there are problems such as insufficient reservoir modification and small treatment radius. The self-supporting cavitation stimulation process technology utilizes high-speed liquid flow to act on the cavitation generator, continuously stimulating the cavitation effect underground, generating shock waves, sound waves and vibration waves. These multiple waves jointly act on the reservoir, penetrating and creating a large number of micro-fractures, achieving the purpose of reservoir modification. The self-supporting cavitation stimulation process technology is not restricted by interlayers and can modify the reservoir around the operation point, with a large affected volume. Field tests were conducted on 8 Wells, with an average daily oil increase of 2.3 tons per well in the initial stage, achieving good measures. The implementation of the self-supporting cavitation stimulation process technology provides an effective technological means for the balanced and in-depth transformation of reservoirs.