Draw Works  :
National 110 UE draw works of 1,500 H.P. w/selectable D.C. Traction Motor Drive, (A and B & A or B) motors with high and low drum clutch plus 2 speed transmission usable with either high or low drum clutch.

Maximum pull with 12 lines strung is 850,000 pounds.

The Draw works is designed for 1 3/8” drilling line and is controlled by positive mechanical and pneumatic systems from the rig floor.

The draw works motors and rotary motor are controlled by electronic controls located at the drillers console.

Make and Type : National 110 UE with 1,500 input horsepower.

Input power to Draw Works : 2 each, 800 HP, D.C.Electric Traction Motors are installed as “A” or “B” or “A” and “B” selectable motors.

Primary Power :
Three each 1,225 KW Cat generators driven by Three each 1,675 H.P. Caterpillar 3512 engines, providing 600 Volts, 60 cycle AC power to a 3x4 bay SCR house.

Three input slots on the AC Buss and 4 SCR drive cubicles for 750 volt DC power out plus an independent 600 volt AC Top Drive Variable Frequency Control power module facility.

SCR Modular Control House manufactured by AmeriMex of Houston Texas.. (Rotary DC motor is the “High Torque” model.)
SCR to provide three inputs bays on the AC buss and four SCR drives on the 750 volt DC out put cubicles as well as an AC VFD module for an AC top drive if installed.
Drives for :
1. Draw works
2. Mud pump “A”
3. Mud Pump “B”
4. Independent DC Rotary Drive


AC Transformers :
1. 1,000Kva 600:480 volt delta-delta, 3 phase copper wound, transformer for MCC service.
2. 230 Kva 480/208/120 volt, 3 phase, copper wound, transformer for rig lighting service.

Draw works Brakes              Conventional Brand brakes on Draw works
1. Band Brakes on drum         large Eaton WPT multi-disc brake, water cooled brake on the
2. Eaton water cooled brake   drillers end of the draw works main drum left.

Draw works Speeds :
High and low speed drum clutches as well as a two speed transmission with the transmission speeds available for either the high or low drum clutch.

Catheads :
Two each Conventional catheads of the drum and cable type, capable of a single line pull of 15,000 pounds.

Drilco EZ-Torque :
One Drilco EZ-Torque installed on the off-drillers side of the rig floor.

Crown Saver :
MD-Tatco or Atlas

Basic Rig instrumentation :
Remote mud pressure gauge for driller, Totco or comparable weight indicator, Rotary Torque indicator, tong torque indicator, 6 pen drilling recorder and Auto Driller as well as a Pason PVT system.

Mast  Re-manufactured to API 4-F :
Sky Top Brewster Free Standing, triple derrick of 142 feet height from the top of rotary table to the bottom of crown water table beams-Re-manufactured and Re-certified to level-4.

Maximum wind load :
100mph – no setback

Maximum wind load :
85 mph with rated setback

Make and Type :
Sky Top Brewster Cantilever Type

Dimensions :
142’ ft x 25 ft’ (height x base width)


Capacity Statement for Mast :
1,000,000 lbs static hook load + derrick wt + weight of block, hook and hanging drill line as calculated by the Manufacturer equal a Gross Nominal Capacity of 1,250,000 pounds.

Racking board, adjustable :
Capacity 225 stands of 5” DP, 8 stands 8” DC and 10 stands of 61/2” DC.

Rotary :
371/2” TFI rotary driven by a high torque D.C. Traction motor of 1,000 H.P. through a chain case and drive line.

Top Drive :
500 Ton Can Rig, Varco, Tesco or Lewco AC driven top drive, powered by AC VFC unit located in the SCR House.

Substructure Re-Manufactured to API 4-F
Note : Substructure is rated with 1,000,000-K rotary casing load while 650-K of pipe is stood back in the derrick as per API – Re-manufactured and Re-certified.

Make and type :
Sky Top Brewster Box on Box type (2-10 ft boxes and 1-5 ft box)

Height under rotary beam :
20 feet

Floor height :
25 feet (26” with 12” mats under the substructure)

Clear height under rotary :
22’ 6”

Length :
33 feet 8 inches

Width :
29’ 2” feet

Casing capacity :
1,000,000 lbs

Max setback capacity :
650,000 lbs minimum


Substructure support mats :
Substructure supported by Dragline type mats of 4 feet in width and 16 feet in Length x 12” thick and compreised of 4 each 12 inch x 12 inch x 16 foot timbers bolted together.

Nominal Drilling Depth :
20,000 feet

Mud Pumps :
No.1 :
Weatherford MP 16 Triplex mud pump of 1,600 input horsepower and driven by two each 800 HP DC Traction Motors, c/w a 50 HP 6” x 5” centrifugal suction charging pump-Unitized on and independent skid, with a suction strainer, discharge pulsation dampener and suction and discharge valves.

No.2 :
Weatherford MP 16 Triplex mud pump of 1,600 input horsepower and driven by two each 800 HP DC Traction Motors, c/w a 50 HP 6” x 5” centrifugal suction charging pump-Unitized on and independent skid, with a suction strainer, discharge pulsation dampener and suction and discharge valves.

Mechanics and Parts house :
One each 10 foot wide x 45 foot long mechanics and parts house equipped with a full set of mechanics tools as required to maintain all rig equipment.

Electricians and parts house :
One each 10 foot wide x 45 foot long mechanics and parts house equipped with a full set of mechanics tools as required to maintain all rig equipment.

Pump parts and rig parts house :
One each 10 foot wide x 45 foot long pump parts and rig parts house with bins for all parts.

Mud and sack storage house :
One each 10 foot wide by 45 foot long mud system sack storage house.

Junk Box Skid for rig floor tools :
One each 10 foot wide x 45 foot long by 4 foot high wall junk box skid for rig tools and rig floor equipment during rig move for transport and storage.

Travelling Assembly
Block Type Rating :
National 500 ton Block and Hook with 6 sheaves and grooved for 1 3/8” drill line.


Drill Line Storage Reel :
Air driven drill line storage reel stand capacble of storing and rotating a reel of 1 3/8” drill line of 7,500 feet in length.

Elevator Link Size, Rating :
500 ton capacity, one set 168” long, weldless type
350 ton capacity, one set 132” long, weldless type

Swivel :
Make and Type : Ideco 650 Ton
Rating (Dead Load) : 650 Tons
Rating (100 RPM’S) : 425 Tons

Kelly :

Make, Type and Size :
One OMSCO 5 ¼” Hexagon x 2 13/16” ID Kelly with 40 feet of working length.

Connection :
6 5/8” REG L.H. upper box x 4 ½” IF lower pin.

Kelly Cocks – Upper :
OMSCO KV 800
Two (2) 5,000 psi x 6 5/8” Reg L.H. (3” ID).

Kelly Cocks – Lower :
TIW
Two (2) 10,000 psi x 4 ½”IF

Kelly Saver Subs, Connection :
Two with 4 ½” IF conections

Kelly Spinner :
Power : Hydraulically Driven
Model : Varco, International or Oil Works type.

Rotary Driven System
Drive :
Driven by a High Torgue, D.C. Traction motor, through a chain and sprocket reduction drive.

Mater Bushings :
VARCO or equal MSPC master bushing complete with bowl No. 1,2,3, lifting sling and bit breaker adapter plate for 37 ½” API rotary tables.

High Pressure Mud Lines
Discharge Line specifications :
5” – Grade – 106-B, XXH pipe (10% random X-Ray)

Working Pressuare :
1,000 psi w/FIG 1002 and 1003 x 5” Unions.

Rotary Hose and connections :
Grade D” with 3 ¼” I.D., 85 ft long, w, 5,000 PSI working pressure and 5” Fig. 1002 WECO unions on each end.

Standpipe :
Single 5” x 5,000 psi, FOG 1002, 70 ft high from rig floor to the gooseneck union to accommodate full reciprocation of a stand of pipe with the top drive during back reaming.

Standpipe Manifold :
One 5” x 5000 psi with cross and two each 4” x 5” 5,000 pound valves, one below the cross and one above-
Two each 2” x 5,000 pound valves, with one on each side of the cross.

Mud Mixing
Hopper : One O’Drill-MCM venture style, 6” mud hopper unit.
Location : On the end of the suction tank skid.
Mixers : 9ea – 15HP Paddle style mixers.
Lower Pressure Mixing Pumps : Four each Mission 6” x 5” x 12” centrifugal pumps.
Drive : 75 HP Electrical motor at 1,750 RPM’s

Active Mud Tanks
Tank 1 (shaker Tank) (Drawings to be supplied) :
8’ 6” H x 10’ W x 36” L active mud volume or 500 active bbls of mud – built on a 45 foot long three runner skid.
Complete with two each 8” x 6” x 12” centrifugal pumps driven by 75 HP AC motors @ 1,750 RPM’s to charge the de sander and the de silter system.

Tank 2 (Volume Tank) (Drawing to be supplied) :
8’ 6” H x 10’ W x 36” L active mud volume or 500 active bbls of mud – built on a 45 foot long three runner skid.
Complete with one each 8” x 6” x 12” centrifugal pump driven by a 75 HP motor @ 1,750 RPM’s to circulate and mix the mud in the volume tank.

Tank 3 (Suction Tank) (Drawings to be supplied) :
8’ 6” H x 10” W x 36” L active mud volume or 500 active bbls of mud – built on a 45 foot long three runner skid.
Complete with two each 8” x 6” x 12” centrifugal pumps driven by 75 HP AC motors @ 1,750 RPM’s to charge the mud mixing hopper and circulate and mix the mud in the suction tank.

Total volume of the three tanks :
1,500 Barrels Total active mud.

High pressure Mud Guns connected to Rig Pumps :
Nine 3” swiveling mud guns with valves, target ell and fan bottom.

Sand Trap (capacity & location) :
200 bbl sand trap located under the Shale Shakers c/w a 12” Sand Trap Dump valve.

Trip tank :
One separate tank to be mounted under flow line.

Capacity :
Two each 30 bbl’s compartments with independent pumps for each compartment.

Level indicator :
Yes (see instrumentation)

Location :
Incorporated into the choke manifold skid between the rig substructure and the rig Shale Shaker Mud Tank.

Trip tank Fill System :
3” x 2” x 9” Mission Centrifugal Pump w/20 H.P. motor

Trip tank Empty System :
3” x 2” x 9” Mission Centrifugal Pump w/20 H.P. motor

Shale Shakers
Make and Type :
Two Fluid Systems or equivalent 4 panel linear motion, high speed shale shakers.

Desilter :
One, Fluid Systems De silter w/16 x 4” cones

Desander :
One Fluid Systems De sander w/ 3 x 12” cones

Degasser :
One Fluid Systems or equivalent Spherical vacuum degasser.


Mud Cleaner :
Fluid Systems 16 cone mud cleaner with cones over a high volume, 4 panel linear dryer.

Water Tank :
One located between the substructure and the shaker tank 500 bbl capacity, measuring 30 feet long x 12 feet wide x 10 feet high.

Total Drill Water Capacity :
500 bbls.

Water pumps :
2 each 4” x 3” x 10” driven by 40 H.P. electric motors.

Main Lighting
Description :
Heavy duty, vapor tight, fluorescent lighting system, certified for use in division 1 or 2 areas as required by API.

Coverage of Lighting :
All areas to be well lit including under the substructure as well as the back side of the mud pits and pipe rack area.

Air Compressors
Number :
Three Rotary and one cold start piston type.

Make and Type :
Quincy model QSB 40 rotary compressors or equivalent.

Power Supply & Pressure :
40 HPTEFC motors

Air Receivers (Volume) :
400 gallons each (3) 190 PSI test pressure and 125 PSI working Pressure – (plus 2 ea. 200 gallon Air Receivers located under the rig floor).

Blow Out Preventer Stack
12 5/8” Annular Type Preventer
Make and Type :
Shaffer Spherical style of Domestic Manufacture.
Pressure Rating : 5,000 pounds.


Single Ram Type Preventers
13 5/8” Bore
Number, Make and Type :
One Cameron Type-U style, Single Ram type BOP of Domestic Manufacture.

Pressure Rating :
10,000 psi WP

Type of Rams :
5” Pipe Rams for DP

Number :
One set each.

Outlet number and size :
Two each, 3 1/16” x 10,000psi

Double Ram Type Preventers :
13 5/8” Bore
Number, Make and Type :
One Cameron Type-U style, Double Ram type BOP of Domestic Manufacture.

Pressure Rating :
10,000 psi WP

Type of Rams :
5” Pipe Rams for DP and Blind Rams

Number :
One set each

Outlet number and size :
Four each, 3 1/16” x 10,000 psi

Drilling Spools
Number : One each
Size : 13 5/8” x 10,000 psi
Outlet, Size, Pressure Rating : Two each, 3 1/16” x 10K

BOP Handling Winches
Hydraulically Powered x 50 Ton :
Two each 25 ton hydraulically powered BOP Hoists


Accumulator Unit and Control
Make and Type :
Koomey, 7 station BOP accumulator

Capacity / Accumulator Pressure :
220 gal, 3000 psi

Triplex Pump :
One each with 1” diameter plungers powered by 40 HP electric motor

Air Pump Package : Two each

Hydraulic Fluid Control Manifold : 7 station control

Drillers Remote control :
Full drillers remote control with 135 foot long umbilical.

Suitcase for 1” Hydraulic lines and one air line :
5 suitcases, 20 feet long, with Hammer unions each end c/w O-Ring seal and 12 each 1” sch-80 (open-close) hydraulic lines for the six station accumulator and one each 1 ½” air line for power to the accumulator air pumps.

Choke Manifold : CAMERON or equivalent.

Type and Pressure Rating :
4 1/16” x 3 1/16” manifold spaced out for one Cameron
10-K Hydraulic choke on one wing and a Thornhill Craver type adjustable choke on the other wing.

Manifold to have a 4” x 10-K line down the middle connecting to the buffer tank with a 4” x 10-K nozzle opposite to allow flow through the middle and directly out of the buffer tank.

Quantity of valves : Five x 4” and Nine z 3” valves.

Manual Adjustable Choke : One 3 1/16” 10K Thornhill Craver type.

H2S Service : Yes

Kill Line : Type : Coflexip armored hose 2 “ (6m long) 10,000 psi
- Three manual valves 3 1/16” x 10,000 psi
- One Check valve 3 1/16” x 10,000 psi


Choke Line : Make : Coflexip 1 x 4” (15 m long) 10,000 psi
- One manual valve 4” x 10,000 psi
- One hydraulic valve 4” x 10,000 psi

Atmospheric Mud/Gas Seperator
Make, Type and Size :
DRECO or similar shop built, 48” Diameter by 20’ tall with internal gas busting baffles and a 19 foot “U” tube type mud/gas seal mud return line of 8” sch-80 pipe.

De-gasser to have an 8” sch-80 vent line at the top and is to be mounted on a skid that accommodates the choke manifold as well, Atmospheric Degasser to fold down above choke manifold in a horizontal position for transport.

Inside BOP : Gray Tool Co with 4 ½” IF connections

Air Winches
Number :
Two each on the rig floor and controlled from the rig floor with 5/8” wire rope and capacble of lifting 8,000 pounds as well as one being certified for use as a man riding hoist.

Make and Type : Thern

Capacity : 10,000 lbs

Mud Saver Box
Make and Type : OTECO, MG-600
Size Range : Inserts for 3 ½” – 5” OD Pipe

Drill String
5” Grade S-135 :
18,000 ft of Premium Drill Pipe, internally plastic coated and with 3” of hard banding on each box.

Wt/ft : 19.50 lbs/ft.

Range : 2 (Two)  (31 feet + in average length)

Specifications :
5” Gr. S-135 19.50 PPF with 95% wall thickness tubes, 4 ½” IF connections, Extended tool Joints, 2” longer than standard.
Hard banded with
Tungsten Carbide
Internally plastic coated
Tool joints “broken in” prior to inertia welding to tubes
Drill Collars
Size 6 ½” O.D. :
27 each 6 ½” drill collars with 2 ¼” bore and one Zip Groove only for slips.
Drill collars to have thread roots cold rolled and copper coated as well as stress relief grooves on pins and bore back on boxes – 4 ½” XH Connections.

Lift nipples :
12 each lift nipples with 4 ½” XH pins and 4 ½” bottlenecks for 4 ½” DP Elevators.

Size 8” O.D :
Nine each 8” drill collars with 3” bore and one Zip Groove only for slips.
Drill collars to have threat roots cold rolled and  copper coated as well as stress relief grooves on pins and bore back on boxes – 6 5/8” API Regular Connections.

Lift Nipples :
5 each lift nipples with 6 5/8” Regular pins and 4 ½” bottlenecks for 4 ½” DP Elevators.

Rotary Drilling Subs
Full complement of rotary drilling sub machined form traceable stock and to API specifications :
4 ½” XH Box x 4 ½” API Regular bit sub bored for Baker Float, 6 5/8” Regular Box x Box bil sub bored for Baker Float, 4 ½” XH double box sub, 4 ½” XH Box x Pin sub, 4 ½” XH double pin sub, 4 ½” XH Box x 6 5/8” Reg pin sub, 4 ½” IF Box x 4 ½” IF Pin saver subs – 4 of each.

Handling Tools
Type “B” Rotary Tongs & Type ‘DB’ Rotary Tongs, Long style drill pipe slips, Drill collar slips and safety clamps, 350 ton Varco BJ drill pipe elevators and other tools as required for the contract.

EZ Torque
One each Drilco EZ Torque hydraulic make up and break out unit powered by and independent HPU.

Pipe Racks and Catwalk
Ten Pipe Racks, 18” high built with 3 each 5” pipe runners and a 1” triangular plate on each end and 4 further plates equally spaced over the 30 foot length of the pipe racks.

One catwalk 50 feet long, 5 feet wide and 18” high, built with two each 18” wide flange beams for runners, 8 inch wide flange beams as cross support beams on 4 foot centers and decked on top with 5/8” plate.

Pipe Inspection Pipe Racks
Four each pipe racks made from 5” pipe with 3 each pipe runners of 28 feet in length and 6 sets of bracings – 42” Tall


Weight Indicator / Driller’s Console
Oilwell Style console built by Applied Machinery Corp.

Weight indicator type :
MD Totco or comparable hydraulic weight indicator rated for 1,000,000 lbs

Snubber Assembly :
Telescoping back up snubbing post that will provide for snubbing of rotary tongs on the drill floor and also for the snubbing of casing tongs when telescoped up.

Mud pressure gauge : Remote mud pressure gauge in drillers console

Rotary Torque indicator : Rotary torque indicator in drillers console

Tong Torque Indicator : Tong torque gauge in drillers console

Manufacturer and type : One Totco Tong Torque Indicator

Drilling Recorder : Yes

Manufacturer and type :
Seven (6) Channel Drilling Recorder Housing and Chart Drive Assembly. MD Totco / Geolograph.

Mud Testing Equipment
Manufacturer and type : BAROID basic field kit and mud testing equipment.

Deviation Surveying Equipment
Manufacturer and type : AOI Inclination unit with Azimuth on Demand
Range : 0 8 degrees
Range : 0 16 degrees
Slick Line Unit for surveying with deviation tools :
Five Star wireline survey unit powered by electric motor driving hydraulic pump and motor.  Unit to be equipped with 20,000 feet of .108 Halliburton type slick survey wire.

Derrick Man Escape Device
Make and Type : Lewis – Geronimo Escape Line and buggy

Sala safety reel for climbing the derrick ladder :
Sala block mounted on elevated arm above the level of the crown and on the centerline of the derrick ladder. Block to be equipped with 160 feet of wire.

Sala safety reel suspended from a Guice Crown mounted arm for providing safety to the derrick man while handling pipe in the derrick :
Sala block mounted on a Guice Arm welded to the Crown water table beams and connected to the derrick mans racking platform by means of a 5/8 inch cable with a triplate 12 feet above the derrick mans head.

Two each Sala safety reels suspended from the rig floor for working on the BOP :
One Sala safety block on each side of the BOP and suspended from the rig floor beams above in order to provide safety to the crew men servicing the BOP stack.

Rig Camp and quarters

Crew quarters : One each 12 man cabin of 12 feet x 50 feet in size
Tool pushers quarters : One each tool pushers office of 12 feet x 50 feet in size
This rig has been completely refurbed. What is not refurbed is new.
Price is $12.9 Million USD
Top Drive not included, but one can be added for additional charge.