DRAWWORKS FRAME The MWI DD 1042/1242 frame tube is an ASTM 500 grade C or grade B to meet C specs.
DRUMS Wide barrel design reduces line interference when running double fast line. MW Industries, Inc.'s spool drum design reduces drumshaft flex and weight while increasing total strength. Tubing drum has 20"x1" Lebus grooving with turn back and kick plates to reduce line wear and assist in spooling.
BRAKE SYSTEM MW Industries, Inc. uses water-cooled main drum flanges, splash cooled sand drum flanges and Eaton water-cooled disc assist with emergency stop. MWI brake flanges are rolled, machined, built up (with submerged arc hard surfacing wire overlay), re-machined and properly balanced to specifications to ensure long life and proper wear for brake pads.
DISC CLUTCH 3 - 24 PO Style Power Grip Disc Plate - Main Drum 2 - 24 PO Style Power Grip Disc Plate - Sand Drum Twin-Disc or W.P.T. air clutch mounted outboard of drawworks frame and chain case mounted on lower output shaft. MWI's use of the chain clutch on lower shaft reduces required clutch size, air requirements and eliminates all live chains.
DISC ASSIST Eaton 3 - 24 water-cooled disc assist is operated with a variable pressure adjustment on operating console for proper speeds that allow safe and normal running job application. Disc assist is also equipped with a main drum emergency stop.
CHAIN DRIVES Drives or Diamond Hi-tensile Double 140 roller chain is oil bathed for a long life. The chains are fully enclosed in a one-piece, aluminum chain chase with a gasket flange. This design prevents case leakage due to warping. Inspection plates provide for chain maintenance and removal without removing the chain case. Output chain can be tightened by sliding right angle gear box. Main drum chain tension can be adjusted by a hard rubber surfaced idler bearing.
MWI 1042/1242 HD POWER DRIVE For ease of replacement, MWI uses "off the shelf" bearings. The right angle drive unit has a gear ratio of 1:1.75.
OPERATORS CONSOLE The operator's console consists of clutch, engine throttle, air slip controls, assist brake control and emergency shutdown. There is a transmission selector, emergency stop on main drum, tong retractor controller and horn. The console is located behind the drawworks frame, in the mast base, for excellent drum visibility and operator comfort. (Option for two air winch controls on console is available.)
LUBRICATION MWI uses remote bearing lubrication. Lubrication system ensures complete lubrication of drum bearings. Lubrication points are conveniently located outside the drawworks frame, for ease of maintenance.
HOIST Two hydraulic "planetary" style winches are mounted on the rig deck. Capacity of the hoist is 8,000 lb with 275' of 1/2" cable, including tail chain (line and chain extra).
TANKS Drawworks comes complete with one 200 gal coolant tank for the 3 - 24 Eaton disc assist and circulating flanges on the 12" x 42" main drum flanges. One 190-gal hydraulic tank is included and both are equipped with a site glass and thermometer. Drawworks is completed with aluminum covers on top and around drawworks.
DISC ASSIST AND TRANSMISSION PROTECTION FEATURES This unit has Murphy Switch gauges, in the run box, mounted on the deck. The run box provides a warning or engine shutdown in the event that the transmission temperature rises above 275 degrees F, the transmission pressure drops below 10 lb or the Eaton disc brake water temperature rises above 170 degrees F.
TELESCOPING MAST
OVERALL A telescoping mast with open face mast design, is manufactured to meet API-4F specifications PSL1. The open face design utilizes structural steel construction, which allows for maximum block clearance. Mast includes a ladder from ground to crown and a block cradle with chain and hook for securing block during transport.
BASE SECTION Four leg style section is hinged to carrier frame. Two turnbuckles, attached from the top of the mast base to carrier frame, allow for mast angle adjustment. The well-side mast legs have manual screw jacks 18" from ground level for fast and safe rig-up conditions. Mast is set at 3.5 degrees.
MAST 500 Series includes the 104'; 295,000 lb, 6x6 square tube mast. (Engineered and analyzed to meet the API spec 4F.)
CROWN BLOCK McKissick roll forged crown sheaves are set up for a 4, 6 or 8 line string-up. Crown Sheaves are grooved for 1". All sheaves are mounted on tapered roller bearings with grease zerks for ease of maintenance. 500 Series Crown includes: One 30" (762 mm) fast line sheave, one 30" (762 mm) dead line sheave, three 24" (610 mm) crossover sheaves and one 24" (610 mm) sandline sheave for 9/16" cable.
RACKING BOARD AND ROD BASKET The mast includes an all welded racking board. The racking board automatically deploys as the mast is extended. The racking board has been slowed down for larger pumping units. The mast includes an automatic deploying rod basket with rod hangers, air transfer system (on a roller trolley slide for easier access for placement in fingers) and safety latch chain with binder on end of fingers.
MAST RAISING SYSTEM The mast utilizes two 3-stage double acting raising rams and one double-stage telescoping cylinder built with a slide. Load pins are hydraulically operated. Raising, telescoping and load pin controls are located under the operator's console for easy access and operation. Hydraulic pressure gauges are mounted on the mast base to provide system monitoring during the raising/lowering process. The hydraulic system incorporates a safety choke system to control flow to telescoping or raising cylinders in case of a hydraulic line rupture or damage.
GUYLINES Mast includes two 3/4" bumper guys from the crown to the carrier, four 5/8" wind guys, two 9/16" board guys and two 3/8" floor lines from board to floor.
DEADLINE ANCHOR Deadline anchor is designed and engineered to meet API specifications and rated for a 150,000 lb maximum deadline load. The deadline anchor is located on the off-operator's side of the rig floor and comes with a line clamp.
FOLDING WORK PLATFORM Platform is constructed of a rectangular tubing and is decked with a reduced slip grating. Platform is adjustable in height from 3' (0.91) to 9' (2.74 m) from ground level. Platform includes a sliding access door and safety rails. Optional telescoping staircase with safety rails available.
POWER PLANT & TRANSMISSION
ENGINE MW Industries, Inc. offers the customer a CUMMINS QSX 15 Package; 485 horsepower; including Jake Brake.
TRANSMISSION M 5610A Allison automatic transmission with drop box provides six forward speeds and one reverse. Remote shifting is provided from the operator's console via an electric shifting system. Rig mode provides 1st thru 5th gears and road mode provides 1st thru 6th gears. First gear override is incorporated through air slip control for quicker shifting on deeper well depths. Transmission uses a separate cooler, integrated into the radiator. All engine/transmission combinations are reviewed and approved by the transmission manufacturer for correct engineering, installation and engine compatibility. MWI's design allows for the removal of transfer case independently.
AIR SYSTEM One engine driven 37.4-cfm compressor pressurizing an air system plumbed in accordance with applicable DOT regulations and requirements. The air system consists of wet, primary, secondary, and auxillary tanks. Check valves prevent accidental air pressure loss from system due to single line failure. Main airlines are plumbed with OEM style steel airlines and compressor fittings rather than threaded pipe with Bendix Twin AD-9 Everflow with heater probe. (Alcohol pot optional)
ELECTRICAL SYSTEM 12-volt electrical system, consisting of one 160 amp alternator, two batteries, one 12V high output starter and voltmeter. Batteries are located in an aluminum battery box mounted on the carrier deck. Jumper lugs are mounted on the outside of box for quicker access and safety of personnel. Location of box provides excellent access for maintenance and service.
TONG CIRCUIT The tong circuit consists of a remote mounted pressure regulator and gauge easily accessed by the operator while standing at the brake handle. The tong circuit does not include hoses, couplings or tongs.
HYDRAULIC CIRCUIT The standard circuit has a piston pump (closed center hydraulic system) capable of 29-80 GPM at 2500 psi, based on engine RPM. It also has a (open center) gear pump driven off the back of the piston pump; which supplies only the tong circuit with 14-37.5 GPM at 2500 psi depending upon engine RPM. There is an option of using a gear pump (open center system) instead of using the standard piston pump (closed center system), but specifications, valves and plumbing change. The closed center hydraulic system has a priority circuit that enables a cooling pump and two winches to be live at all times when the hydraulic pump is engaged. The hydraulic circuit is then split one of two ways to the rig up mode or a neutral state. The rig up mode consists of four leveling jacks, two raising rams, one scoping cylinder and one load pin cylinder. There are two option outrigger cylinders. The raising rams, scoping cylinder and load pin cylinders have three individual relief pressure capabilities.
6 AXLE CARRIER (Long Wheel Base)
OVERALL The carrier is manufactured by Kimble Chassis Company and is a heavy-duty 6-axle oilfield carrier with two front steering axles, two rear driving axles, one tag axle and one pusher axle. All frame members coped and welded for superior strength and durability. The carrier is designed for maximum maneuverability, road clearance and turning radius. Location of axles specially engineered to distribute correct weight in proportion to front and rear axles. MWI's engineering team will contact applicable DOT(s) of state(s) or province(s) for proper weights and bridge laws.
SPECIFICATIONS Weights will change with configuration of customer's choice of blocks, string-up and rig options.
CARRIER FRAME A 21" x 57 lb beam manufactured by Kimble Chassis Company, specifically for MW Industries, Inc. Front and rear tows lugs are welded to the end of the frame rails for proper load distribution during towing. Carrier HD-Deck is fabricated with 11 gauge diamond deck plate with 2 1/2" wrap around main deck rails to ensure long life and durability with no deck sag.
FRONT AXLES Front tandem axle set is steerable and rated at 24,000 lb per axle and spring suspension rated at 48,000 lb.
REAR DRIVING AXLES Dana DD-463-P Tandem Series rear-driving axles are rated at 46,000 lb. Carrier includes Hendrickson walking beam rear suspension. Standard ratio is 6.17:1.
REAR TAG AND PUSHER AXLE Rear tag and pusher axle are non-driving axles with air suspension. Brakes are rated at 22,000 lb capacity.
BRAKE SYSTEM 16.5 x 6 ABS, with auto slack adjusters, DOT approved regulation antilock air brake system. Drum style brakes on all axles. Carrier is equipped with additional air emergency brake.
TIRES AND WHEELS The four front tires are 445/65 R22.5 wide-based tires mounted on 13" x 22.5" aluminmun hub-piloted "bud" type wheel. The sixteen rear tires are 11R 22.5 General or Continental all-terrain tires mounted on 8" x 22.5" hub-piloted aluminum "bud" style wheels.
CAB MWI's easy access cab is a custom made, soundproof, single person cab set up for left-hand drive. Cab is equipped with an air suspension seat, heater, defroster, windshield wiper, windshield washer, air horn, electric windows and West Coast mirrors with lights and heater. Instrumentation consists of speedometer, voltmeter, oil PSI with warning lights, tachometer with hour-meter, coolant temperature with warming lights, air PSI and fuel gauge with warning lights. Tilt and telescopic steering also included.
STEERING Rig steering is a hydraulic assisted system with one cylinder mounted on each axle and a hydraulic assisted steering box (carrier is equipped with wide turning radius).
RIG LEVELING SYSTEM Rig leveling is accomplished with four MWI hydraulic leveling jacks with locks. Front jacks have 22" stroke of travel and rear have 15". All jacks are controlled from the operator's console.
OTHER EQUIPMENT The MWI 6-axle carrier comes complete with integrated aluminum rig stairs, aluminum operator side slide-in walkways, OSHA approved aluminum guardrails, aluminum driveline covers, one tong retractor, two locking tool boxes and one 100-gal fuel tank.
STANDARD PAINT AND PREPARATION - DUPONT COMMERCIAL COATINGS
PREPARATION Rig is thoroughly washed and sandblasted prior to priming.
PRIMER COAT MW Industries, Inc. uses a DuPont satin high solid epoxy primer, 3 mils thick.
TOP COAT High gloss polyurethane 2 mils thick, metallic and/or pearl optional 2 mils thick.
CLEAR COAT The unit is finish coated with up to two non-metallic clear coats. Heavy-duty performance finish coat is DuPont 3-4 mils in thickness.
OPTIONS *Complete tool package - rod equipment, tubing equipment, etc. *Hydraulic extended out-riggers with manual tail screws *Lighting package *Cold package *Complete mast assembly *Rod racks *Brake flanges *McKissick traveling blocks *Other options available upon request
