SERVICES

Hydromechanical Perforation


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Inspite of widely used gun based perforators, Hydromechanical perforation is based on simple and highly effective principles of cutting a production casing of the wells with the following creation of multiple perforation channels by the high speed fluid jets generated by 2 perforator's nozzles. Nozzles have got a unique design to build a tight and highly disruptive fluid jets with the ability to wash out a rock of reservoir to the depth of 2m.

Technology advantages

  • No stress to the cement bond and no induced channellings/cross flow due to crack of cement bond/formation.
  • No premature water inflow since stressless perforation channels creation technique.
  • Better inflow due to no sintering (vitrification) of the rock and as the result an initial permeability of the perforation channels.
  • Perforation channels length is up to 2m, diameter is 15-20mm depending on diameter of the nozzles.
  • Unique design of the perforator's nozzles.
  • Cost effective and safe perforation solution.
  • Long water free production time.
 

 

HOW IT WORKS

CORRELATION TO THE RESERVOIR

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  • Perforator is fixed to the tubing along with crossover for correlation purpose and run to the planned perforation interval.
  • Positioning of perforator performed by GR, CCL methods to the planned perforation interval.

 

 

LONGITUDINAL SLOTS CREATION

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  • Cutting discs activated at THP of 2-10MPa.
  • Cutting discs start creating longitudinal slot (LS).
  • LS created by moving perforator up and down.

Process of perforation is controlled by monitoring of THP.

 

 

PERFORATION CHANNELS CREATION

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  • High pressure fluid jets of the ejectors wash out the cement bond and adjacent formation under the pressure of 23MPa.
  • Continued wash out creates DEEP and FULLY permeable channels up to 2m in to the reservoir.
  • Increased well-reservoir communication.

Additionally: Acid wash can be done through the acidizing valve at the top of perforator.
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Hydromechanical perforation video

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