Patent ID: 8226386
Filing Date: 2012-07-24
Classification: E21B

Abstract:
1. A deep force pump for oil wells comprising: a piston and a stem linked to a pump arranged on a surface by a number of rods, a production route established between a casing and a tubing, the stem travels inside a guide, the guide has an upper end having a diameter which increases towards a barrel, an anchor including an upper end is connected to a lower end of said barrel and a lower end of said anchor is connected to a nipple fixed to a transfer box, a basket located below the transfer box, in an upward stroke of the piston the fluid passes from an admission valve to the barrel, and in a downward stroke of the piston the barrel is emptied, at least one connector connected between the basket and the transfer box, the basket houses a ball and a seat of a production valve, the production valve and one of the connectors are arranged in a carrier body, the carrier body is retained between said transfer box and a cage and fitted to a conduit, the admission valve is located inside the cage and has a ball that releases or obstructs the passage of the fluid, the passage provides a seating seal for said ball, the ball is linked to a connecting body that tightens the admission valve which provides a threaded torque in its lower end, and a relief valve is housed in the piston cage, the opening of said relief valve releases excess pressure generated between the lower end of the guide and the upper end of the piston towards the inside of the piston.