Parratt Wolff Inc

Injecting various types of fluids such as HRC Ž or ORC Ž has become commonplace in the environmental industry. Similar to pressure grouting, injecting these products involves conveying into contaminated formations known volumes of fluids at precise depths.

First however, a hole or well must be drilled in the formation. Parratt-Wolff has used augers, air hammers or direct push tooling to drill a borehole for the fluid installation. Using these tools, the hole is installed at the right diameter and to the specified depth, regardless of the formation. Next, fluid is injected as the tooling is removed. Sometimes injection is as easy as pulling a probe rod, other times it requires the use of pneumatic packers to control the flow. In some instances semi-permanent wells, complete with grout seals, are installed to convey the fluid to the correct intervals within the formation.

On the left, a packer is added to an auger to control the HRC placement. The photo on the right shows HRC being added to a heated hopper prior to injection through the packer assembly.