K600 Offshore with mastup
Offshore workover rig, Bohai Bay, China
Unitized Kremco 6K500 well servicing pump with reverse circulating manifold
National Oilwell provides Drilling Modules for all offshore applications including drillships, semi-submersibles, caisson structures, barges, jackups and fixed platforms.
Derricks and masts are available for applications with top drives and guide rails to resist wind loads.
Our Dreco line of derricks and masts, as well as complete rigs can be furnished to meet requirements of regulatory groups including ABS, DNV, Lloyds and the Dutch Staatstoezicht. Material traceability, data books, quality assurance programs, etc. are available to meet the most stringent requirements.
National Oilwell engineers are familiar with special design requirements imposed by automatic pipe and subsea B.O.P. handling systems, motion compensating devices and riser tensioning systems.
These engineers have developed a variety of rig mechanization components and systems, such as complete rig skidding that facilitates movement from a centrally located remote control station. These components are integrated in the complete drilling module to minimize weight while improving operator safety. Packages utilize a modular design concept that allows assembly using the platform cranes which substantially reduces the risk and cost during installation. The modular concept can also be designed to facilitate a one-piece single lift of the assembled modules onto the platform in the event a heavy lift crane is available.
Phillips Ekofisk Rig installation on platform.
Atwood Tender Assist – Malaysia
Draugen platform rig – Norway
National Oilwell is a leader in the development of offshore workover rigs. These units are designed to be used for completion in conjunction with a drilling rig or by themselves as a workover rig. They are of modular construction and load weights are designed for the capacity of the cranes on the platform.
Platform well to well moves average one to two hours. This includes moving the rig (15 minutes), killing the well and nippling up. Platform to platform moves average three and one half days.
Modular workover rig
Offshore workover rig
4000 HP drilling rig
National Oilwell is the world leader for innovative land based rig packages with designs pioneered to include highly mobile slim hole drilling rigs, single module pad drilling rigs for the north slope of Alaska, mechanized rigs, modular desert rigs, track-mounted swamp rigs and helicopter transportable rigs.
National Oilwell has the experience and capabilities to design and fabricate advanced rig packages for any climate or terrain conditions, considering different parameters.
Semi-automated drilling rigs
Sandmaster self-propelled rig
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A free standing mast – no guy lines.•
All wheel drive.•
A B.O.P./wellhead handling system – integral with the substructure.•
No rig ramp is required.•
Levelling and alignment problems are eliminated through use of the free standing mast and integral substructure.•
Safe and easy rig-up. National Oilwell is a leader in the desert with several “firsts” in rigdesign and desert moving systems such as our Sandmaster rigs. Sandmasters are successfully operating in the desert of North Africa.
The rigs boast the following features:
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An integral substructure – open on three sides.•
An integral hydraulic system – no hydraulic hoses have to be disconnected including hydraulic B.O.P. lines.•
An integral mud pump – mounted on the carrier deck.•
Both the accumulator and choke manifold are mounted on thecarrier deck.
Highly mobile semi-automated desert rig
National Oilwell has successfully met the challenges of the Arctic, both offshore and onshore. With over 25 years in playing a leader- ship role in cold weather rig design, and with a wealth of experience and knowledge ranging from the development of year-round offshore cold weather drilling, to the creation of completely self- contained, highly mobile onshore drilling systems. Any challange can be met.
Some major concerns when developing an arctic drilling or production rig are: the environment; limited space availability; storage of consumable supplies; mobility; operational safety; automation and the high costs of fuel.
The rig design permits pad to pad moves with a minimum of outside work in severe arctic conditions.
To date, National Oilwell has developed and provided the most efficient rigs on the north slope of Alaska.
Ice Island drilling rig
SSDC drilling barge
Aerial view of Nabors and Doyon rigs at a National Oilwell facility.
Complete turnkey rig-up and project management services can be offered. All major projects are completely assembled, mechanically completed and commissioned at our facilities to avoid costly delays to the client. Project management and multi-facility manufacturing gives National Oilwell the ability to accelerate delivery schedules and reduce costs.
North Sea workover rig
Offshore slant drilling rig
Russia mobile drilling rig Phillips Petroleum for North Sea
National Oilwell has successfully completed a variety of rig packages in both the drilling and well services industry, for onshore and offshore applications.
National Oilwell has extensive experience in automating and mechanizing drilling and workover rigs. These automated and semi-automated drilling systems have been built for the Norwegian sector of the North Sea, Arctic rigs on the north slope of Alaska, desert rigs in Oman, slant drilling rigs in China and mobile trailer rigs in Brazil. These systems integrate in-house equipment and client-furnished equipment for a total automation package. Our products include:
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Driller’s control cabins – both mechanical and electrical.•
Advanced drill floor layouts incorporating automated equipment.•
Anti-collision systems integrating the top drive, pipe handlingand pipe makeup machines.
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Pipe handling, vertical racking and laydown machines.•
Semi-automatic catwalk machines.•
Pipe deck gantry cranes.•
Remote drawworks controls.•
Hydraulic powered auto-drillers.•
AC powered drilling equipment.•
Blowout preventor handling systems.•
Automatic mud buckets.•
Automatic thread dopers.•
Multi-application coiled tubing drilling rigs.Drill floor view from control cabin
Draugen semi-automated lightweight drilling rig Pipe handling system
Mechanized drill floor
PIPE HANDLING SYSTEM
National Oilwell offers a complete range of pipe handling systems to bring tubulars from the pipe rack to the derrick, working inside the derrick, vertical racking and stand building.
These pipe handling systems are designed with safety and efficiency in mind. Remote operation and automation are built in at the concept stage. Our pipe handling systems are designed to meet the needs of our customers.
Also offered are several versions of the Javelin pipe handling arm. These arms have been used for offshore drilling and vertical and slant land drilling.
SIDE ARM RACKER.
This unique pipe handling machine is designed to handle a full range of drilling and servicing tubulars from the pipe racks to well center and the racking board. The SAR is fully automated, light weight and handles all the pipe handling needs of small mobile drilling rigs.
Mechanized catwalk machine
Pipe handling system
Javelin for slant rig
Javelin, catwalk machine and pipe deck crane
Fully mechanized slant rig Side arm racker
B.O.P. handling system
B.O.P. crane
Mud bucket
Automatic pipe doper
CASING STABBING BASKET
Accesses more of the drill floor and stores in the derrick in a safe environment. Basket may also be remotely operated from the drill floor. National Oilwell is on the leading edge with new concepts and designs for providing our customers a competitive advantage in a changing marketplace.
AUXILIARY EQUIPMENT
With new designs and a range of custom equipment to assist in rig mechanization, these products offer solutions to any need. SKIDDING SYSTEM
A wide range of rig skidding systems including the Claw, Gripper (see below) and Lift and Roll Systems are available.
BOP HANDLING SYSTEMS
A complete range of manual and mechanized BOP Handling systems including Bridge Crane Hoists, Hydaulic Ram Lifts, Offshore Forklift Units, Dolly Systems and conventional Hoists can be offered. Capacities range from 5 to 375 ton. Travel and lift distances are designed to meet client’s requirements.