Application of Liquid Flow Cavitation Technology in Microtransformation of Reservoir between Injection and Production Wells:Taking the B1-B2H Well Group in Bohai S Oilfield as an Example
During the water injection process in the B1-B2 H well group of Bohai S oilfield,the injection pressure of the B1 well gradually increases,and it cannot meet the injection demand for a long time.The corresponding production well B2 H has poor water injection efficiency and is in a low efficiency state.The reason is that there is a low-permeability zone about 100m away from Well B1,which leads to poor reservoir connectivity between the injection well and the production well.Due to the limited processing radius of conventional measures,it is not possible to transform this low-permeability zone.Therefore,it is necessary to find new process measures that can meet the requirements of a sufficiently large processing radius while also carrying out micro transformation of the low-permeability zone.According to the principle of fluid flow cavitation reservoir transformation technology,it is known that this technology can meet this condition.After implementing liquid flow cavitation,both the water absorption capacity of injection wells and the corresponding production situation of production wells have been significantly improved.The successful implementation of this technology has pointed out the direction of measures for similar problems in other oil and water wells,which can effectively improve their water injection development effect.
liquid flow cavitationbetween injection and production wellsreservoir micro transformationconnectivitywater absorption ca-pacity
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