Dual Gravity Gas Separators for Well Pump

摘要

A lower separator located below a submersible well pump intake has a labyrinth flow path, causing a first well fluid separation of lighter components from heavier components as well fluid flowing into the lower separator turns downward to flow toward a lower separator heavier component port. A bypass riser has a bypass riser inlet below the pump intake and a bypass riser outlet above the pump intake. A lighter component conduit communicates the bypass riser inlet with lighter components of the first well fluid separation, causing a second well fluid separation at the riser outlet as a heavier portion of the lighter components flowing up the riser turn to flow downward to the pump intake. A heavier component conduit bypasses the bypass riser inlet and delivers the heavier components of the first well fluid separation to the pump intake.

主权项

1. A well pump assembly, comprising:
a pump adapted to be suspended on a string of production tubing within casing in a well, the pump having a pump intake and a pump discharge for discharging into the production tubing; a motor operatively coupled to the pump for driving the pump; a lower separator located below the pump intake, the lower separator having a labyrinth flow path that causes a separation of lighter components from heavier components of well fluid flowing into the lower separator; a bypass riser extending from below the pump intake to above the pump intake, the bypass riser having an inlet below the pump intake that receives lighter components of the well fluid separated by the lower separator, the bypass riser having a bypass riser outlet above the pump intake, causing a heavier portion of the lighter components flowing up the bypass riser to turn and flow downward at the bypass riser outlet to reach the pump intake; and wherein the lower separator has a heavier component port in fluid communication with the pump intake via a flow path that that bypasses the inlet of the bypass riser.