P3 Postperforating Treatment | Schlumberger

P3

Postperforating treatment

Treats all types of wells
Temperature rated to
500 degF [260 degC]
Ranges in OD
2 to 7 in
[51 to 178 mm]
Operates in high pressures
Rated to
20,000 psi [138 MPa]
Shows proven success globally
Used hundreds of times, with
flow rate increases from
20% to 400%

Performs stubborn debris removal from existing perforations in permeable rocks

P3 postperforating treatment removes a wide range of debris and material trapped in your well's perforation tunnels and does not perforate new holes in the wellbore casing. It can be used any time after initial perforation or completion, from hours to years later.

This patented treatment can be used for all well types, including geothermal, to

  • remove perforation damage, scale, asphaltene, fines, and other flow obstructions
  • clean sand screens and ICDs
  • serve as pregravel-pack treatment
  • enable diagnostics, including debris samples.
P3 postperforating treatment strips material that is trapped inside perforation tunnels.
P3 postperforating treatment strips material that's trapped inside perforation tunnels and can be used to selectively reduce skin from several sources, including scale and fines.

Delivers selective production enhancement or injector well cleanup for significant flow improvement

P3 treatment reduces skin selectively by removing trapped debris that resists flow from existing perforation tunnels, producing immediate and often significant results. Applied in hundreds of environments globally, this solution has objectively demonstrated improved reservoir-to-wellbore communication with flow rate increases ranging from 20% to 400%.

The selective process enables increased potential production from production zones and leaves high skin at the perforations in zones producing unwanted water or gas.

  • In geothermal wells, the treatment removes scale from slotted or predrilled liners.
  • In injection wells, the treatment removes filtered solids that reduce injectivity; when these wells have screens, it cleans inside the screen.
  • In openhole wells, the treatment clears out natural or induced open fractures or openhole perforations.
  • In soft rock, the treatment cleans perforation tunnels to accept gravel.

Clears perforation tunnels using dynamic underbalance technique

P3 treatment employs a patented dynamic underbalance technique to break up and remove near-wellbore flow impairment damage (typically called skin) from existing perforating tunnels.

The treatment's system consists of an implosion chamber, which is positioned over the target interval. Once triggered, the resulting implosion strips material from flow bottlenecks, removing perforation damage or deposits on slotted liners and screens and obstructions in near-wellbore fractures.

The magnitude and duration of the implosion are modeled using the PURE Planner perforation job planning application; flow or injectivity improvements can also be predicted using SPAN Rock stressed-rock perforating analysis and measured objectively using production logs or by monitoring surface flow rates and pressures.

SPE Tech Paper—Perforation Cleanup via Dynamic Underbalance: New Understandings
Our previous models of perforation tunnels were oversimplified and needed updating. This technical paper explores how modern science and innovative demonstrations have produced a better model, unlocking direct and reliable routes to better productivity. This publication is a reference for many perforation experts in our industry.
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