Fluid Gas Migration Analyzer - OFITE

 

 

The OFITE Laboratory Gas Flow Model helps predict and overcome the potential for gas migration after cementing. This unit evaluates both the potential and severity of gas migration at downhole conditions with the recommended slurry. This allows for the design of the most economical and reliable cement slurry for a particular well.

The problems of gas migration after cementing have been well documented. The costs associated with these problems, as well as more strict environmental regulations, have forced gas well operators to look for methods to minimize gas migration.

Method of Operation:

A test cement slurry is prepared according to the API specification 10, poured into a test cell, and placed into a heating jacket. The test cell is fitted with a piston above the slurry and a screen below. A back pressure regulator below the test cell applies back flow pressure. Hydrostatic pressure is applied to the piston and nitrogen/gas pressure is applied through the piston tubing and onto the cement slurry. As the slurry hardens, if the cement is sufficiently permeable, the nitrogen pressure will force the gas through the back pressure regulator to be collected and measured. Both filtrate and gas volume are collected.

Size: 43" × 36" × 48" (109 × 91 × 122 cm)
Weight: 469 lb (212.7 kg)