Expandable Steel Patch : ESP technology

Before treatment After treatment

The ESP is a durable remedy for partial or total repair of wells.

The Expandable Steel Patch is a simple and quick solution for the rehabilitation of oil, gas or water producing wells:

· Insulates polluted or corroded areas

· Insulates perforations or screens areas

· Optimizes the production of wells without a significant reduction of well diameter

· Increases the lifespan of wells

· Insulates drilling losses in open hole wells and reduces cement operation

· ...

ESP Installation Phases

ESP installation Phases

The Expandable Steel Patch is run in hole using a conventional drill string connected to the DHCT tool. The Inflatable Packer is inflated at a pressure which enables a good ESP-Packer connection without any change in the ESP’s shape.
Once the ESP is at the right depth, it is expanded by inflating the packer, to come into contact with the casing.
The Packer is then deflated.
The DHCT is then moved up, followed by a supplementary inflation

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ESP Specifications

Performances are depending on expansion ratio, patch thickness and zones to be treated Diameter to be treated:

· From 4.5in to 14in

· Minimum diameter losses less than ½ in

· Steel Patch Expansion ratio: up to 35%

· Steel Patch thickness: from 2mm to 8mm (plus sealing rubber thickness)

· Can be set up in irregular geometry hole (20% oval shaped)

· Can be set in multi-diameter zone

· Customized product, on demand length depending on the application

ESP set in 20% oval shape well ESP Multi diameter setting