Patent ID: 8651191
Filing Date: 2014-02-18
Classification: E21B

Abstract:
1. A system for producing liquids and particles from the bottom of a slim hole natural gas well where the system comprises: a) a string of casing installed in a wellbore in the slim hole where a lower end thereof is near the bottom of the wellbore; b) a pump comprising a barrel and a plunger wherein the barrel is secured to the casing near the lower end thereof; c) a string of hollow rod disposed within said casing such that an annulus is formed around the hollow rod string within the casing and where the hollow rod string is connected to the plunger that is positioned within the barrel of the pump for movement up and down the barrel and liquids and particles are produced to the surface from the plunger up through the hollow rod string, wherein the string of hollow rod further includes at least two check valves spaced apart within the hollow rod string above the plunger to prevent particles that might settle in the liquids from descending below each check valve and maintaining the particles at a level in the wellbore closer to the surface so that when the pump is operating, the particles are pushed closer and closer to the surface to eventually be fully removed from the well, wherein the liquids flow through the interior of the plunger, and d) a hollow shear tool attached to the barrel to allow the pump to be withdrawn from the well.