Dual articulating lift frame cuts rig up time in half

Devin International has developed a dual articulating lift frame (DALF) to reduce rig up height for well completions and interventions.

Oct. 31, 2007

2 min read

Offshore staff

LAFAYETTE, Louisiana -- Devin International has developed a dual articulating lift frame (DALF) to reduce rig up height for well completions and interventions. Devin says it shortens rig up height by 12 to 18 ft (3.7 to 5.5 m) and cuts rig up time in half.

To develop DALF, Devin modified its proprietary bail assembly spreader system (D-BASS) by integrating components of the lift assembly. By eliminating the need for bottom bails and an elevator, DALF saves up to 18 ft (5.5 m) of space needed between the block and the rotary on the rig floor, according to Devin.

The refitted bottom component features a sliding, hydraulic door that functions as an elevator by using an interchangeable bushing arrangement to handle lower assemblies. The function of the bottom bails and elevator become a function of the lift frame.

Rigging up coiled tubing or wireline in this method requires about 45 minutes or less – at least half the time needed to prepare a traditional coiled tubing installation with bails, Devin says.

DALF can handle 750 ton (680 metric ton) loads and maximum 10-¾ in. (27.3-cm) outside diameter tubing. The system meets API design standards and is DNV-certified for all coiled tubing applications, according to Devin.

The first DALF system was first deployed in June. A second unit has been commissioned for an upcoming well completion project in the GoM.

10/31/2007