Drillmec unveils next generation of automated rigs

Drillmec unveils next generation of automated rigs

HOUSTON -- Drillmec has developed a new generation of fully automated drilling rigs, named AHEAD (advanced hydraulic electrical automated driller), designed to meet the highest HSE standards and to enhance drilling performance. The first rig of this kind is expected to complete construction for early 2015.

The AHEAD design allows for about a 50% footprint reduction as compared to a conventional land rig (1,500 hp). The visual impact is drastically reduced thanks to the special telescopic mast design and the fast moving is possible thanks to trailer mounted components.

The substructure can be a sling shot type or a hydraulic self-leveling elevating system, which grants fast and safe rig up without cranes, the hoisting system is based on a Telescopic Mast with Double Hydraulic Piston in tandem, manufactured in compliance with API 4F and equipped with integrated Drillmec ETD series electric top drive.

AHEAD is also equipped with a new fully automated off-line system to make up stands of two Range 3 DP (or three Range 2 DP) directly on mouse hole. The system reduces risk for the rig crew and NPT is also reduced. The off-line system is able to handle even the casing joints, placed on special racks, positioned at ground level. The system includes a vertical and horizontal pipe handler, and a modular vertical pipe rack with a total capacity of 5.000 m of 5” ½ Range 3 DP.

The AHEAD series can also be equipped with a rig walking system, Drillmec DAS (data acquisition system) and DMS (drilling monitoring system).

The AHEAD series is also designed to be equipped with the Drillmec HoD (heart of drilling), a package combining continuous circulation system, high resolution flow rate monitoring and an anti-friction device, which provides a significant step ahead in drilling efficiency and the achievement of the planned T.D. in all conditions, with very high HSE levels.

The continuous circulation of drilling fluid in the wellbore, combined with the fine monitoring of the flow rate, can play a key role in drilling wells which are characterized by a very narrow pore/fracture pressure gradient, where the usual mud circulation interruption during the drill pipes connections, may cause very dangerous situations.

The HoD package is completed by an anti-friction device, integrated in the continuous circulation subs or in the drill pipe tool joints, which is able to reduce top drive and string stresses while drilling high angle or horizontal sections of ERD wells.

The combination of these three tools ensures a continuous dialogue with the bottom hole, the constant presence of two safety barriers on the well (mud circulation and BOPs) and the optimal working conditions for the top drive, ensuring the highest HSE level and enhanced drilling performances, with reduced drilling and connection times, giving a cost saving solution with always maximum control of the well.