Gas lock removal method for electrical submersible pumps
OwnerJesus S. Armacanqui, Paul A. Munding, Jr. +1inventors
InventorsJesus S. Armacanqui, Paul A. Munding, Jr., Nick Martin
Life of this patent
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Abstract
Embodiments of the present invention disclose a method, a computer program product, and a system for removing gas locking in a pump. The method includes setting the pump into a gas interference condition based on a variable speed drive driving a pump at a first frequency and a choke valve set at a first restriction value and adjusting the variable speed drive to a second frequency and the choke valve to a second restriction value such that the adjustment produces a backpressure that lets free gas get dissolved in a fluid phase and keeps fluids drawn by the pump at a single-phase flow based on pressure-volume-temperature characteristics of the fluids.
Claims9
A method of removing gas interference and gas locking in a pump, the method comprising:
- setting the pump into a gas interference condition, wherein the gas interference condition includes a variable speed drive driving the pump at a first frequency and a choke valve set at a first restriction value, the choke valve located along a flowline downstream from a pump discharge of the pump;
- and
- adjusting the choke valve to a second restriction value and the variable speed drive to a second frequency, wherein the second restriction value produces a greater pressure within the flowline upstream from the choke valve than the first restriction value, wherein the second frequency is greater than the first frequency, and wherein adjusting restriction of the choke valve to the second position and the variable speed drive to the second frequency produces a backpressure that keeps fluids drawn by the pump at a single-phase flow.
Dependencies are inferred from the claim text.