CPC E21B 43/35 (2020.05) [E21B 43/121 (2013.01); E21B 43/38 (2013.01)] | 5 Claims |
1. An apparatus comprising:
a receptacle having a top end, a bottom end, and a chamber, the top end having at least one inlet port and a central bore;
a first tubing inserted into the chamber through the central bore;
a second tubing physically and fluidly connected to the first tubing;
an artificial lift system disposed along the second tubing; and
an outlet port located on the bottom end and controllable to open the bottom end using an outlet check valve, wherein the outlet check valve comprises:
a valve seat having a valve chamber;
a valve element disposed in the valve chamber and biased against the valve seat by a spring, wherein the spring under separation conditions keeps the valve element covering the outlet port and the spring under cracking pressure conditions allows the valve element to move away from the valve seat into the valve chamber to uncover the outlet port and open the bottom of the receptacle.
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