National
Oilwell launches Ideal Rig
Posted: 27 May 2004
The Ideal Rig from National Oilwell is the next generation of light,
safe and efficient rapid deployment rigs.
National Oilwell has developed new design concepts and manufactured
the Ideal Rig to achieve extraordinary gains in drilling efficiencies
The system encompasses a wide array of features that increase safety
and reduce transportation and deployment time.
The National Oilwell Ideal Rig is the “ideal” solution
for drilling programs where safety, speed and efficiency are crucial
to your drilling operations.
Features and Benefits:
- Reduced number of loads to location
- Ease of assembly
- Safe, remote control hydraulic raising system
- Secure pinning arrangements (patent pending)
- No cranes required for drilling module assembly
- Ground level drawworks maximizes drill floor area
- Scoping doghouse / drillers cabin
- Skidded and wheeled versions available
Specifications:
- Hook Load Rating: 750,000
- Mast Height: 142 ft
- Base Dimensions: 12 ft x 12 ft
- Racking Capability: 5-1/2 in DP 208 stands, 8 in DC 10 stands
of 90 ft
- Crown Cluster: 6 in x 48 in sheaves, 48 in fastline sheave,
48 in deadline sheave
- Wind Rating: Normal Operating - 40 knot,No hook load with full
setback - 70 knot,No hook load with no setback - 93 knot
Substructure:
- Rotary Load: 750,000 lbs. with full setback
- Setback Load: 400,000 lbs.
- Clear Height under Rotary: 21 ft - 8 in
- Drill Floor Height: 25 ft
- Drill Floor Dimensions: 27 ft x 27 ft
Mast Assembly:
1. The lower and upper sections of the mast are transported using
separate mast dollies to the rig site. The upper section incorporates
the traveling block and the drill line spooler; if a Top Drive is
used, it will travel in the Lower Section of the mast.
2. Join the Lower and Upper Sections by backing the lower end of
the Upper Section to the upper end of the Lower Section.
3. Using the National Oilwell adjustable Crown Kingpin and the
National Oilwell adjustable Lower Mast Section Dolly, adjust, align
and pin together the mast sections. If a top drive is in place,
then the top drive track sections are also aligned and linked.
4. Disconnect the Mast Assembly’s Lower Section from the
fifth wheel of the truck.
5. Back up the Mast Assembly to the Mast Base. Utilizing the adjustable
Crown Kingpin and the National Oilwell adjustable Lower Mast Section
Dolly, elevate and maneuver the Mast Assembly until the Mast Assembly
and the Mast Base are aligned and can be pinned.
6. Pin lower end of Mast Assembly to Mast Base.
7. Pin Racking Board into working position.
8. Activate Mast Raising Cylinders, align and pin to Mast Assembly,
and disconnect mast from truck’s fifth wheel.
Substructure Assembly:
1. The Off Drillers Side(ODS) Side Box, Drill Floor Middle Section,
and Drillers Side (DS) Side Box are each transported to the drillsite.
2. ODS and DS are set in place.
3. The Drill Floor Middle Section is slid between the ODS and DS
Side Boxes.
4. The Drill Floor Middle Section is then pinned to the ODS and
DS Side Boxes.
5. The connections are then made for the Driller’s Cabin
/ Dog House to the DS Side Box.
Mast and Substructure Erection:
1. Both the mast and substructure are raised by utilizing a portable
hydraulic system.
2. With the substructure in the low position, the mast is pinned
to the middle drill floor section. The Ideal Rig can be designed
to raise the mast from either the V-door side or the Drawworks side.
3. To raise the mast, telescoping mast cylinders are pinned to
the lower section of the mast and then hydraulically telescoped.
4. With the mast in the vertical position and the raising cylinders
still in place, mast support legs are swung out and pinned to the
floor.
5. The mast raising cylinders are then disconnected and retracted.
6. With the mast secured in the vertical position, the drill floor
is hydraulically raised by telescoping cylinders. Telescoping braces
are employed to prevent the substructure from rotating past the
vertical position. The braces are extended when the floor is at
ground level and as the substructure rises, they retract and “bottom
out” on a stop and then are secured with pins.
Wheeled Version Option:
The Ideal Rig is also available as a wheeled version. This alternative
to the skidded version offers faster deployment and setup. Both
of the substructure Side Boxes incorporate hydraulic positioning
systems for ease of alignment during assembly. Application specific
wheel systems are available to comply with both on and off road
transport requirements. Both the skid-mounted and the wheel-mounted
versions of the National Oilwell Ideal Rig deliver speed, safety
and efficiency.
For more information see http://www.natoil.com/
Posted by Richard Price,
Editor Pipeline Magazine
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