DEVICE FROM fluid injection aquifer wells in an oil reservoir

摘要

The proposal relates to the art and technology cyclic fluid injection into the reservoir at its discharge or flooding therein various reagents. Installation for pumping liquid from the aquifer wellbore formation into the reservoir runs counterrotating two wells, in each of which the pump is designed as a submersible sucker rod pump installed above the suction valve in the composition of the tubing is further equipped with a channel through which nadporshnevogo cavity pump communicated with oil-bearing formation. Subpiston cavity of the pump through the suction valve in communication with the aquifer. At the mouth of each of the wells arranged cylinder with a piston, the barrel is rigidly fixed relative to the tubing and the bottom piston is rigidly connected with the pump drive. Subpiston chamber of each cylinder is hydraulically communicated with the respective cavities of the hydraulic cylinder, is divided between the drive piston and filled with hydraulic fluid, wherein the hydraulic cylinder is situated on the surface, and oil is used as working fluid. The proposed apparatus for pumping fluid from the aquifer into the reservoir wells pump - deep execution (immersion rod) is mounted directly in the interval and the aquifer an oil well formations, which improves the efficiency of the pump. Installing saves energy because the pump drives work in protivohode, which makes it possible to operate in the regenerative mode, return power to the fishing net. 1 Fig. to 1 liter.