Browse Prior Art Database

Jet-Assist ESP System for Gas Slugging Applications

IP.com Disclosure Number: IPCOM000237695D
Publication Date: 2014-Jul-02
Document File: 2 page(s) / 155K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure is for a system that breaks a gas lock of of ESP systems in slugging wells. The Problem: ESPs are density dependent on the fluid entering the pump for generating discharge pressure, and the required discharge pressure is dependent on fluid density already in the tubing string (discharge pressure necessary for upward flow that is). Thus when a drastic change in density occurs the pump will most likely not able to generate the necessary discharge pressure to keep fluid moving through the pump. This invention is for a way to quickly reduce the required discharge pressure so that the pump can recover quickly.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 60% of the total text.

Jet-Assist ESP System for Gas Slugging Applications

This disclosure is for a system that breaks a gas lock of of ESP systems in slugging wells. The Problem: ESPs are density dependent on the fluid entering the pump for generating discharge pressure, and the required discharge pressure is dependent on fluid density already in the tubing string (discharge pressure necessary for upward flow that is). Thus when a drastic change in density occurs the pump will most likely not able to generate the necessary discharge pressure to keep fluid moving through the pump. This invention is for a way to quickly reduce the required discharge pressure so that the pump can recover quickly.

The basis of the invention is a sliding sleeve that employs a properly supported shaft that runs through the center of the assembly to allow for shafts above and below the sliding sleeve to couple their respective shafts. The sliding sleeve also provides a means of voluntarily engaging and disengaging a seal that does not allow fluid to bypass axially between the sliding sleeve and its shaft. Sliding Sleeve 3 would be placed in a TTC ESP system between the Receiving Assembly and the Seal Assembly. This requires a Shaft 12 to run thru Sliding Sleeve 3 to connect Pump 1 shaft to Seal 4 shaft. The purpose of Seal 4 is to isolate motor oil 20 from well bore fluid 19. While Seal 4 must be in communication with well bore fluid it also has mechanical shaft seals that rotate with the shaft during operation. These m...