High Arctic's Hydraulic Workover Rigs are capable of the majority of workovers, completions, re-entries, abandonments and snubbing operations that are currently being conducted with conventional drawwork type service rigs in combination with rig assist units. The HWR moves the tubular components in and out of the wellbore using hydraulic rams and slip assemblies. The HWR provides greater flexibility for BOP configurations than smaller Stand Alone Snubbing systems and service rig / rig assist combinations.

Its reduced size, weight and packaging capability brings down the costs of transportation and maintenance, making the HWR appropriate for equipment areas with spacing limitations. Therefore, the HWR is primarily used in remote locations, equipment areas with spacing limitations and offshore applications. HWRs allow workover and snubbing operations to be conducted within a small equipment footprint. These rigs are capable of independently lifting a pipe string of up to 460,000 pounds, with added snubbing capabilities up to 230,000 pounds. The tripping time, while in an overbalanced state, is comparable to conventional drawwork type rigs. During underbalanced operations there is no need to mobilize additional well control support equipment.

HWRs can function efficiently on conventional well operations (typically used in the international market) as well as in all types of underbalanced scenarios (typically used in the Canadian market). Using HWRs in a snubbing operation eliminates the costs of kill fluid and reduces costs of pumping equipment. With less drilling fluid-induced formation damage, cleaner and more enhanced production can be achieved. Some HWRs are PLC controlled (electronic over hydraulic) and computer sequenced. These systems provide up-to-the-minute reports of all well and unit information, including well pressure, tubing depth, weight and tong torque.