The 7 Inch Foam Ball for drill pipes is designed to wipe drill pipe or tubing string clean of cement, fluids, or debris, and can be used to separate fluids.
A 7 Inch Foam Ball for drill pipes was recommended because it can pass through a 1-in. restriction.
Merit’s foam wiper balls are designed to wipe drillpipe or tubing string clean of cement, fluids, or debris and can be used to separate fluids. The ball has a high parting-stretch ratio and easily passes through restrictions such as mechanical setting tools, diverters and liner running tools, and through tapered strings. Merit wiper balls are made of natural rubber of open cell design. They can pass through small restrictions without being damaged, though it is not recommended that they be used if required to repeatedly pass through extremely tight restrictions. Foam wiper balls can be used with most types of drilling and displacement fluids.