Bridge type eccentric stratified waterflooding is the most widely used in China and it is an important means to solve the contradiction between layers in the process of oilfield development and to improve reservoir producing ratio for waterflooding. Field selections of throttle for bridge type eccentric stratified waterflooding more rely on technician′s experience, but there is a lack of systematically theoretical support, having low success rate and needing repeated testing. This paper makes use of the theory methods of fluid mechanics, mathematics and computer technology, builds the corresponding model of throttle selection. Based on the model, the program of throttle selection is compiled. The success rate of throttle selection can be improved effectively.
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