Study on Application of Multi ― combined Perforating Fracturing Technology to Low ― permeability and Ultralow ― permeability Oil Reservoirs and Its Development Tendency

摘要

Low ― permeability and ultralow ― permeability oil reservoirs are easy to be damaged; the efficiency; of improving the low ― pressure and low ― output oil reservoirs of old oilfields is low, and the cost continuously 1 increases. In order to solve the problems, multi ― combined perforating fracturing technology is put forward. The effecting principle, characteristics, forms and field applications of it are presented. The development tendency of the study on the technology and its applications are discussed. The applications of the technology will improve the development conditions of the low ― permeability and ultralow ― permeability oil reservoirs and the low ― pressure and low ― output oil reservoirs.