Back to results
US 11,306,567 B2Granted
Ball lift sleeve and retrieval tool for oil and gas wells
OwnerRon Elkins, Arthur Sullivaninventors
Life of this patent
Estimating the term…
Abstract
A ball lift sleeve and retrieval tool comprising a sleeve for disposing in tubing of a well, the sleeve defining a first passage from a first proximal end to a first distal end, and a retrieval tool for disposing in the tubing of the well, the retrieval tool being separately moveable in the tubing between mated and unmated conditions with respect to the sleeve, the retrieval tool at least partially mating with the first distal end of the sleeve when in the mated condition and at least partially closing fluid communication through the passage of the sleeve when mated therewith.
Claims8
A plunger lift well comprising:
- a tubing extending inside a casing production string of a well and having a first end through which oil and gas enters the tubing from the well;
- a lift sleeve arranged inside the tubing and adapted to move inside the tubing;
- a ball lift sleeve arranged inside the tubing between the first end and the lift sleeve, the ball lift sleeve is adapted to move inside the tubing and defines a first passage extending from a first proximal end to a first distal end and a ball seat at the first distal end;
- and
- a ball disposed inside the tubing between the ball lift sleeve and the lift sleeve,
- wherein the ball is seated at the ball seat during a start of an operation of the well and the ball and the ball lift sleeve moves together towards the lift sleeve due to a pressure differential across the ball lift sleeve,
- wherein the ball is adapted to contact the lift sleeve and engages with the lift sleeve upon contacting the lift sleeve, and
- wherein the ball and the lift sleeve move together in a direction away from the first end of the tubing and the ball lift sleeve moves towards the first end upon engagement of the ball with the lift sleeve.
5 more elements
Dependencies are inferred from the claim text.