Spotting Fluid

General Description

Envirospec 550 is a high solids, surfactant based, oil soluble additive for spotting fluids. It effectively increases the soaking rate of spotting oil and at the same time causes dehydration of the wall cake. As the cake dehydrates, it becomes noncohesive and allows penetration of the spotting fluid and wetting of the drill pipe. The force necessary to free the pipe is therefore greatly reduced.



One gallon of Envirospec 550 per barrel of spotting fluid for weighted and unweighted drilling fluid.

Physical Properties

Viscosity 10
Specific Gravity 7.0 - 7.5
pH, 5% aqueous dispersion 6.0 - 7.0
Pour Point 18º F
Flash Point 100º F


Envirospec 550 is available in UN approved 55 gallon drums and bulk quantities.


Observe warning label on containers. Normal precautions for industrial chemicals apply.

pdf Envirospec-550-PB (15 KB)