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Fluid Propelled ESP Deployment

IP.com Disclosure Number: IPCOM000250017D
Publication Date: 2017-May-16
Document File: 3 page(s) / 162K

Publishing Venue

The IP.com Prior Art Database

Abstract

A method for deployment of tools in deviated wells.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 53% of the total text.

1

Fluid Propelled ESP Deployment

Alternatively deployed electric submersible pumping systems (ESPs) are deployed into wells

with deviations greater than 55 degrees. Typical alternately deployed ESP installations are

gravity deployed, meaning that the ESP hangs from its deployment method and goes down hole

until it reaches its final destination. When installations occur in angled wells, the ESP will travel

downhole until it reaches a point where gravity can no longer overcome the friction between the

well sidewalls and the ESP itself and not reach its final destination.

To overcome this problem, ESPs (or any tool) are conveyed downhole with the use of a pushing

fluid. To achieve this, a sealing device may be located at some point in the ESP string, this is to

prevent fluid from simply bypassing the tool, and with fluid trapped above the tool, the fluid

could be used to convey the tool into place.

Once the tool has reached its final destination, the running tool (a device connected at the top of

the tool string) would be released and pulled to the surface via a preferred conveyance method

(wireline, CT or rods). To retrieve the tool from its final destination, a pulling tool is deployed.

The pulling tool may be very similar to the running tool but modified to allow the pulling tool to

be conveyed via propelled fluid. When the pulling tool reaches the retrievable tool downhole, it

is then pulled via the main conveyance method.

A fluid propelled deployment method (FPDM) system as disclosed herein may include:

 A running tool

 A pulling tool that can be fluidly propelled downhole

 A sealing assembly

 A pump to propel fluid down the wellbore

The running tool attaches to the tool by way of wireline, coil tubing or rods and is deployed

down hole. Upon reaching a point in the wellbore where the tool will no longer travel due to lack

of gravitational forces a pump is used to fill the pipe above the tool. The well bore is then filled

with fluid from surface and the sealing assembly atop the tool will stop the fluid from continuing

downhole past the tool. A pump is then used to exert pressure on the column of fluid and in

doing so will drive the tool further down hole. Once the tool reaches its desired destination the

running tool is then released....