CORE STABILIZATION: WHY POLYURETHENE FOAM?

The common methods for core stabilization are not recommended by ICS

• Gypsum causes particle invasion which is impossible to remove.
• Epoxy causes difficulty in plugging samples. May not set because of oil.
• Freezing causes microfractures, core expansion, clay damage. Cost of Freezing.

Polyurethene Foam is soft, provides cushion while transportation and is easy to work with.

In addition to being a simple process, substantiantial reduction in cost is achieved.

• Two chemicals are premixed
• Premixed solution is poured down the annulus and the barrel approximately ½ filled
• Foam is created and expands in the annulus and fractures
• After foam reaches the top, the section is capped.
• Setting takes ~25-40 minutes
• The core is chilled (not frozen) to prevent fluid loss and transport.