Walnut & Pecan Shell media is primarily used alone or in a combination with other specific materials to retrieve lost circulation.
Walnut & Pecan Shell media has a high chemical resistance. Since pH and temperature do not affect its activity, this media is very useful in oil-based drilling fluids as well as all aqueous systems.
– Combines high strength, shape and size to make a premium product
– pH or temperature do not affect the activity of Walnut Sell media
– Resists fermentation
– Applicable in all drilling fluids, including oil mud
Walnut shells are primarily used, alone or in combination with other shaped materials, to regain or cure lost circulation. The fine variant can be maintained in a circulation system without bypassing the shale shakers; however, medium and coarse grades will be removed with cuttings on the shakers. Their hardness renders walnut shells resistant to deformation by hydrostatic pressure. Consequently, plugging or bridging efficiency is maintained.
Walnut shells also exhibit high chemical resistance and are unaffected by pH and temperature, making them useful inoil-based drilling fluids as well as all aqueous systems.
Secondary uses include torque reduction and as a scouring agent to clean balled bottomhole assemblies.
The typical treating levels for prevention range from 2 to 5 lb/bbl (5.7 to 14.3 kg/m3). For more severe losses, when the material is pumped as a pill or squeeze, levels from 10 to 50 lb/bbl (28.5 to 142.7 kg/m3) are recommended. Severity of loss and the amounts of other materials incorporated in the mix will dictate the appropriate concentration.
Walnut shells should be stored in a dry location, away from sources of heat or ignition.
Consult the MSDS, safety posters, and/or product label before use, and use personal protective equipment as advised.
Combines high strength, shape, and size to make a premium product
Is unaffected by pH or temperature and resists fermentation
Is applicable in all drilling fluids, including oil mud
Typical Physical Properties
|Appearance||Light to dark-tan granules|
|Packaging||40-lb (18.14-kg) or
55-lb (25.00-kg) sacks