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MEX-AS

DESCRIPTION

MEX-AS is water-based mud inhibitor and micro-sealant.  This additive represents a mixture of partially water-soluble components containing sulphated organic resins. This additive is used in water-based systems to improve borehole wall stability and to improve filtration cake properties. Fine particles of the additive seal micro-fractures, and prevent the transfer of pressure created by mud column, thus stabilizing pressure in the rocks surrounding the borehole. 

MAIN PHYSICAL PROPERTIES

Appearance:                                                                             Black-and-brown powder

Density:                                                                                   1.2 – 1.3 g/cm3

рН (2% solution):                                                                       9.1 – 9.5

APPLICATION:

MEX-AS may be used with any water-based mud systems. The treatment may be done in the form of water solution, or directly, by adding the additive to the mud tank during circulation. Unlike any other shale stabilizers, MEX-AS does not require any preliminary dispersion before treatment. MEX-AS treatment shall be done in concentrations from 9 to 28 kg/m3. In some cases  it is recommended to use this additive right before drilling through the loose intervals, in order to reduce drilling costs.

      ADVANTAGES:

      LIMITATIONS:

  • MEX-AS improves borehole stability.
    • This additive plugs micro-cracks/ fractures.
    • It reduces mud filtration in high temperature and high temperature conditions.
    • It reduces permeability and improves the quality of the filter cake.
  • It is recommended to treat mud with this additive right before drilling in the pay interval in order to reduce mud treatment costs.
    • The additive is stable to thermal decomposition and may be used for drilling purposes at temperatures up to 250 оС
 

PACKAGING AND HANDLING

MEX-AS is packaged in 25 kg multilayer paper bags. Store in a dry place. Use conventional PPE when handling the product (safety goggles, gloves and dust mask. Handle as recommended in the MSDS.

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MEX-AS