Patent ID: 8328528
Filing Date: 2012-12-11
Classification: E21B,F04B

Abstract:
1. A method for pumping fluid from a well employing a double standing valve sucker rod pump comprising the following steps: a. opening a lower stationary standing valve and closing a stationary upper standing valve provided on a double standing valve sucker rod pump that is installed in a well, b. moving a piston of the pump upward in conjunction with an upstroke of the rod string and thereby causing fluid to flow from the bottom of the well through the open stationary lower standing valve and into a coupling chamber located between the stationary lower standing valve and the upper stationary standing valve, c. closing the lower stationary standing valve and opening the upper stationary standing valve, d. moving the piston of the pump downward in conjunction with a down stroke of the rod string thereby pumping fluid from the coupling chamber through the stationary upper standing valve and out of the pump such that the fluid flows upward in the well on each downstroke of the rod string.