PIPE RUBBER^TM

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Description and Advantages:

PIPE RUBBER^TM is a multi-purpose drilling fluid additive for providing lubricity in extended reach drilling and lost circulation control in low fracture gradient environments. PIPE RUBBER^TM is an environmentally advanced concept developed from recycled products. PIPE RUBBER^TM is a proprietary product of NER LLC and has been patent approved for oilfield applications. With a lower specific gravity than other LCM’s, PIPE RUBBER^TM yields more volume of product at lower concentrations.

Application/Function:

· Sealing fractures in low-fracture environments

· Control of seepage losses

· Reducing torque and drag

· Reduction of wear on drill pipe and casing

· Lower density improves product performance in shallow water flows

· For use in Water Based and Invert Emulsion systems

Properties:

· Density: 1.0 -1.2 SG

· Appearance: Black and “spongy” feel

· Particle size: 1-420 microns

· Temperature: Stable to 500^oF

MIXING

Inverts:

PIPE RUBBER^TM is readily mixed in inverts of all types. Concentrations should range from 1-5 ppb for background seepage loss up to 25 ppb in concentrated pills for severe losses.

Water Based:

A coupler is recommended for PIPE RUBBER^TM to mix into WBM. Surfactant based defoamers may be sufficient to couple the product.

Lubricity:

PIPE RUBBER^TM will perform as a solid lubricant in WBM and Inverts. Lubricity in WBM will be enhanced when oil and PIPE RUBBER^TM are premixed. The hydrophilic nature of PIPE RUBBER^TM allows for the oil to remain external on the particles and aid in lubricity between the drill pipe and casing.

Limitations and Recommendations:

As with all drilling fluid additions, pilot testing is encouraged. When high levels of product are added for severe lost circulation, additional dilution may be required to allow sufficient free fluid for wetting surface area of the PIPE RUBBER^TM .