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Walnut Shell

Lost Circulation Material

Product Description

Walnut shell is ground walnut shell, a lost circulation material that can be used in both oil-base and water-base systems. It is available in three sizes, fine, medium and coarse. Walnut shell can be mixed in combination with other LCM.


As a lost circulation material walnut shells are especially adapted for plugging induced fractures. Walnut shells are also used to reduce torgue and drag of drill pipe and drill collars, especially in high angle holes. Walnut shells are used as a sweep to scour the well bore and tools when sticking clay is a problem.


Seal fractures and permeable zones to prevent loss of fluid

High compressive strength/non-absorbing

Technical Data


Brown granular


15.0% Max

Environmental Information

For information concerning environmental regulations applicable to Walnut shell,contact the Health Safety and Environmental Department.


Transportation of commodity name is not restricted by either international or CHINA regulatory agencies.

Safe Handling Recommendations

Utilize normal precautions for employee protection when handling chemical products. Use of standard PPE is recommended for employee comfort and safety. See Material Safety Data Sheet (MSDS) prior to use.

Package and Storage

25kg bags or according to customer’s requirement.

Avoid breathing dust. Wear respirator when airborne dust is present. Harmful by Inhalation. Danger of serious  damage to health by prolonged exposure.

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