mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

The Mud pump import export trade sector contributes significantly to the overall GDP percentage of India. No wonder, the port is booming in this sector and at Seair, we better understand how to benefit you from this welcome opportunity. We comprehend the fact that the majority of import firms are active in sourcing distinct ranges of products including raw materials, machinery, and consumer goods, etc. Hence, we provide comprehensive import data solutions as well as export data solutions for broad categories of import trading firms and export trading firms too.

Our Mud pump import data and export data solutions meet your actual import and export requirements in quality, volume, seasonality, and geography. Alongside we help you get detailed information on the vital export and import fields that encompass HS codes, product description, duty, quantity, price, etc. The export import data from Seair paves the way for successful partnerships that generate profit for business from both the local and global precincts.

mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

Sep262016LINER, 6-1/2 A850PT 8-1/2 OD (MAT. CODE:211505008) (05330651)(MUD PUMPS SPARES FOR DRILLING SERVICES)United StatesBombay SeaUNT582,530,80043,634

Aug102016LINER , 6-1/2 A850PT 8-1/2 OD (MAT. CODE: 211505008) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT17726,92342,760

Aug102016VALVE, OILWELL A1700PT (20160257) (MAT. CODE: 21012768) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT3503,788,11010,823

Aug102016DISC-VALVE POLYURETHANE FK-7 API-7 (MAT. CODE: 210016307) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT3501,852,5565,293

Aug102016LINER, 6A850PT, A1100PT 8 1/2 OD (MAT. CODE: 5330601) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT12513,12242,760

Aug102016LINER, HI-PRSR W/STOP, 6-1/2F/ (MAT. CODE: 210000090) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT843,825,34545,540

Aug102016LINER, HI-PRSR W/STOP, 6 F/A 14 (MAT. CODE: 2104564538) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT421,795,92842,760

Aug102016PISTON ASSY 7 SERIES L SA NATL 1-1/2-1-5/8 SNAP (MAT. CODE:210002571) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT1201,465,34512,211

Aug102016PISTON, 6-1/2 SA1-1/2, 1-5/8 BOR (MAT. CODE: 211501523) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT2503,287,63413,151

mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

Oct282016SLEEVE CYLINDER LINER 6 1/2 (MAT. CODE: 210750201) (PART NO.200PZJ456)(SPARES OF GARDNER DENVER PZ9 MUD PUMPS)United StatesNhava Sheva SeaUNT15499,69733,313

Oct282016CYLINDER LINER 7 (MAT. CODE: 213215624) (PART NO. 207PZJ456)(SPARES OF GARDNER DENVER PZ9 MUD PUMPS)United StatesNhava Sheva SeaUNT652,317,74435,658

Sep262016LINER, 6-1/2 A850PT 8-1/2 OD (MAT. CODE:211505008) (05330651)(MUD PUMPS SPARES FOR DRILLING SERVICES)United StatesBombay SeaUNT582,530,80043,634

Sep072016LINER, PUMP,6 1/2 INCH SIZE, CERAMIC MATERIAL,FOR A1700PT MUD PUMP APPLICATION 8401985 (OILWELL EQUIPMENT)United StatesBombay Air CargoNOS321,9737,324

Aug262016OILWELL SUPPLIES:(20460668)(MATERIAL CODE: 211501046)LINER FLUSH SHIELD(MUD PUMP SAPRES FOR ALL RIGS)United StatesBombay SeaUNT10103,12410,312

Aug102016LINER, HI-PRSR W/STOP, 6-1/2F/ (MAT. CODE: 210000090) (PROCUREMENT OF MUD PUMP SPARES FOR DRILLING )United StatesNhava Sheva SeaUNT843,825,34545,540

mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

GNSB Series Centrifugal Mud Pump is designed to transfer industry slurry, waste water with solids less than 2mm. It’s widely used for drilling industry, construction mud transfer, environmental waste fluids transfer as well as mining slurry transfer industry. GNSB Centrifugal Mud Pumps have been field proven to meet the standards for rugged and demanding applications. The pump is capable to be used for high volume, high temperature slurry and pumping high abrasive, high viscosity fluids.

Fully casting pump skid instead of welding to provide stable supporting for the pump and motor, in a result to improve the operation life of the coupling and all bearings.

GN Separation and Conveying Equipment company manufacture separation equipment and conveying equipment as well as the transfer pumps for the industry process application. This allows GN to be able to provide full package solution to our clients for different applications. Both GNSB transfer Centrifugal Mud Pump and separation equipment are widely used for following industry.

mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

Honda’s WDP30 diaphragm pump is a positive displacement pumps that can pump thick sludge or water containing large solids. Instead of an impeller and a volute, diaphragm pumps use a neoprene diaphragm. The WDP30 offers an exceptional value for construction, industrial, and agricultural applications.

mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

12119022Air or vacuum pumps, (excluding gas compound elevators and pneumatic elevators and conveyors); air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters; parts thereof Products Include: Copper Lugs5%

HS CodeDescriptionGST%15171029OTHERS Products Include: Optical Transceiver, Other Card Reader, Frequency Converter, Aroma Diffuser,Docking Station, Drone, Electric Actuator, Breast Pump5%

HS CodeDescriptionGST%16041900OTHR SRGCL INSTRMNTS AND APPLNCS (INCL VTRNRY) Products Include: Ventilator, Engraving Machine, Oxygen Cylinder, Ruler, Surgical Gown,Breast Pump, Face Mask, Medical Consumables(Face Mask)12%

Tableware, kitchenware, other household articles and toilet articles, of plastics (excluding baths, shower-baths, washbasins, bidets, lavatory pans, seats and covers, flushing cisterns and similar sanitary ware)

HS CodeDescriptionGST%39249090OTHR HOUSHOLD ANDTOILT ARTCLS OF PLSTCS NES Products Include: Plastic Cup, Plastic Item, Aroma Diffuser, Crockery, Tumbler, Automatic Soap Dispenser, Cat Litter, Breast Pump, Dish Washing Sponge, Technical Grade Urea, Pvc Ghamela, Disposal, Maldehyde, Water Camper, Melamine Crockery, Silicone Spatula18%

HS CodeDescriptionGST%392690Articles of plastics and articles of other materials of heading 3901 to 3914, n.e.s (excluding goods of 9619) Products Include: Banner, Plastic Hanger, Toothpaste Dispenser, Plastic Pump12%

39269099OTHR ARTICLE OF PLASTIC NES Products Include: Other Artificial Grass, Yoga Mat, Plastic Yoga Mat, Masking Tape, Cotton Hand Gloves, Baby Walker, Plastic Beads, Brush Cutter, Coffee Mug, Pvc Bend, Screen Protector, Nose Mask, Plastic Pipette, Plastic Cup, Plastic Dana, Door Mat, Tweezers, Ldpe, Garbage Bag, Cotton Buds, Mobile Cover, Hand Wash, Household Items, Filter Cartridge, First Aid Kit, Gift Box, Pvc Box, Reflective Tape, Id Card, Ruler, Shower Head, Air Diffuser, Spacer, Blender, Nylon Strap, Treadmill, Trophy, Silicone Rubber, Smartphone, Wireless Charger,Automatic Soap Dispenser, Airpods, Cotton Swabs, Earbuds, Face Shield, Ferrule, Thermocol, Cat Litter, Key Ring,Scotch Brite, Apple Watch, Computer Table, Computer Mouse, Breast Pump, Welding Helmet, Baby Carrier, Boxing Gloves, Battery Terminals, Interior, Comforter, Dust Pan, Cake Mix, Automotive Plastic Parts, Glitter, Bubble Roll, Plastic Pump12%

HS CodeDescriptionGST%84099990OTHER PARTS OF SEMI DIESEL ENGINES Products Include: Turbo Charger, Two Wheeler Bikes, Plunger, Armature, Connecting Rod, Pvc Drum, Bellows, Cylinder Liner, Coolant Pump, Dg Set, Diesel Exhaust Fluid, Diesel Genset28%

Pumps for liquids, whether or not fitted with a measuring device (excluding ceramic pumps and secretion aspirating pumps for medical use and medical pumps carried on or implanted in the body); liquid elevators (excluding pumps); parts thereof

HS CodeDescriptionGST%841330Fuel, lubricating or cooling medium pumps for internal combustion piston engine Products Include: Oil Pump, Electric Water Pump18%

841360Rotary positive displacement pumps for liquids, power-driven (excluding those of subheading 8413.11 and 8413.19 and fuel, lubricating or cooling medium pumps for internal combustion piston engine) ,Products include: Pump Assembly18%

841370Centrifugal pumps, power-driven (excluding those of subheading 8413.11 and 8413.19, fuel, lubricating or cooling medium pumps for internal combustion piston engine and concrete pumps) ,Products include: Pump Set18%

841381Pumps for liquids, power-driven (excluding those of subheading 8413.11 and 8413.19, fuel, lubricating or cooling medium pumps for internal combustion piston engine, concrete pumps, general reciprocating or rotary positive displacement pumps and centrifugal pumps of all kinds) ,Products include: Plunger Pump18%

84137010OTHERS CENTRIFUGAL PUMPS PRIMARILY DESIGNED TO HANDLE WATER Products Include: Cat6, Mini Monoblock Model Pump, Pump Set, Dewatering Pump, Water Pump Motor, Pump Set18%

84138190OTHERS Products Include: Breast Pump, Splash Monoblock Pump, Aquarium, Band Saw Machine, Cooler Pump, Hydraulic Pump, Pump Seal, Diaphragm Pump, Self Priming Pump, Plunger Pump18%

84139190OTHERS Products Include: Ms Material, Plunger, Drive Shaft, Spare Parts For Monoblock Pump, Dispenser Pump, Barrel Pump, Bonded Seal, Grouting Pump, Injector Nozzle, Retainer, Hydraulic Pump Parts, Pump Controller18%

841311Pumps fitted or designed to be fitted with a measuring device, for dispensing fuel or lubricants, of the type used in filling stations or in garages18%

841319Pumps for liquids, fitted or designed to be fitted with a measuring device (excluding pumps for dispensing fuel or lubricants, of the type used in filling stations or in garages)18%

841350Reciprocating positive displacement pumps for liquids, power-driven (excluding those of subheading 8413.11 and 8413,19, fuel, lubricating or cooling medium pumps for internal combustion piston engine and concrete pumps)18%

Air or vacuum pumps, (excluding gas compound elevators and pneumatic elevators and conveyors); air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters; parts thereof Products Include: Copper Lugs

84149090OTHERS Products Include: Copper Lugs, Spare Parts Of Turbo Charger, Repair Kit, Air Manifold, Aluminium Casting, Aquaculture Equipment, Tower Fan, Compressor Spares, Impeller Pump, Cpu Board, Engineering Parts12%

841480Air pumps, air or other gas compressors and ventilating or recycling hoods incorporating a fan, whether or not fitted with filters, having a maximum horizontal side 120 cm (excluding vacuum pumps, hand- or foot-operated air pumps, compressors for refrigerating equipment and air compressors mounted on a wheeled chassis for towing)12%

841490Parts of : air or vacuum pumps, air or other gas compressors, fans and ventilating or recycling hoods incorporating a fan, n.e.s. ,Products include: Engineering Parts12%

HS CodeDescriptionGST%841581Air conditioning machines incorporating a refrigerating unit and a valve for reversal of the cooling-heat cycle "reversible heat pumps" (excluding of a kind used for persons in motor vehicles and self-contained or "split-system" window or wall air conditioning machines)28%

Refrigerators, freezers and other refrigerating or freezing equipment, electric or other; heat pumps; parts thereof (excluding air conditioning machines of heading 8415)

HS CodeDescriptionGST%84212900OTHR FLTRNG/PURFYNG MCHNRY AND APPRTS FR LQD ,Products include: Basket Strainer, Chemical Pump, Y Strainer, Vacuum Oil, Water Sensor, Fuel Filter Element18%

84219900OTHR PARTS OF FLTRNG/PURFYNG MCHNRY Products Include: Membrane, Filter Cartridge, Diffuser, Air Diffuser, Dehumidifier, Tablets, Cement Bags, Air Pressure Regulator, Auto Drain Valve, Booster Pump, Cartridge Filter, Chafing Dish, Stainless Steel Filter18%

HS CodeDescriptionGST%84248100*APPLNCS FR HORTICULTURAL/AGRICULTURAL WORK Products Include: Agricultural Products, Agricultural Pesticides, Agriculture Pipe, Agriculture Spray Pump, Sprinkler Irrigation, Drip Irrigation System12%

84249000PARTS OF MECHANICAL APPLIANCES Products Include: Injector, Welding Holder, Aroma Diffuser, Dust Collector, Air Nozzle, Air Shower, Trigger Sprayer, Pump Spare Parts, Irrigation Equipment, Powder Coating Machine, Sanitizer Spray Machine, Hose Reel Drum12%

HS CodeDescriptionGST%84798999OTHER Products Include: Engraving Machine, Aroma Diffuser, Fog Machine, Two Wheeler Bikes, Tape Dispenser, Airpods, Dust Collector, Ratchet Belt, Air Cushion Machine, Bio Coal, Chain Pully, Glue Dispenser, Grease Pump, Tyre Changer, Embossing Roller12%

HS CodeDescriptionGST%85044010ELECTRIC INVERTERS Products Include: Solar Light, Frequency Converter, Ups Inverter, Power Inverter, Dc Converter, Solar Pump, Soft Starter, Luminous Ups, Frequency Inverter5%

HS CodeDescriptionGST%85437099OTHERS Products Include: Optical Transceiver, Other Card Reader, Frequency Converter, Aroma Diffuser,Docking Station, Drone, Electric Actuator, Breast Pump, Aroma Diffuser, Ac Timer, Access Control System, Biometric, Biometric Attendance System, Biometric Machine, Biometric Reader, Signal Converter18%

Parts and accessories for tractors, motor vehicles for the transport of ten or more persons, motor cars and other motor vehicles principally designed for the transport of persons, motor vehicles for the transport of goods and special purpose motor vehicles of heading 8701 to 8705, n.e.s. Products Include: Parts Of Car Windsheild Glass, Water Pump Spare Parts

HS CodeDescriptionGST%870899Parts and accessories, for tractors, motor vehicles for the transport of ten or more persons, motor cars and other motor vehicles principally designed for the transport of persons, motor vehicles for the transport of goods and special purpose motor vehicles, n.e.s. ,Products include: Water Pump Spare Parts, Oil Seal Kit, E Rickshaw Spare Parts, Clutch Cable, Clutch Cover, Pressure Plate, Clutch Cable, Gear Pinion, Wheel Hub, E Rickshaw Spare Parts, Vehicle Battery, Water Temperature Sensor, Latest, Wheel Rim, Commercial Training & Coaching, Plastic Wheel18%

HS CodeDescriptionGST%90189099OTHR SRGCL INSTRMNTS AND APPLNCS (INCL VTRNRY) Products Include: Ventilator, Engraving Machine, Oxygen Cylinder, Ruler, Surgical Gown,Breast Pump, Face Mask, Medical Consumables(Face Mask), Alcohol Prep Pad, Alcohol Swab, Ambu Bag, Respirator Mask, Ot Light, Jig, Double Sided Adhesive Tape, Suction Machine12%

HS CodeDescriptionGST%080719OTHER MEDCNE PUT UP FOR RETAIL SALE N.E.S Products Include: Tarpin Oil, Dietary Supplement, Finger Pulse Oximeter, Breast Pump0%

HS CodeDescriptionGST%09023090OTHR HOUSHOLD ANDTOILT ARTCLS OF PLSTCS NES Products Include: Plastic Cup, Plastic Item, Aroma Diffuser, Crockery, Tumbler, Automatic Soap Dispenser, Cat Litter, Breast Pump5%

HS CodeDescriptionGST%09041120OTHR ARTICLE OF PLASTIC NES Products Include: Other Artificial Grass, Yoga Mat, Plastic Yoga Mat, Masking Tape, Cotton Hand Gloves, Baby Walker, Plastic Beads, Brush Cutter, Coffee Mug, Pvc Bend, Screen Protector, Nose Mask, Plastic Pipette, Plastic Cup, Plastic Dana, Door Mat, Tweezers, Ldpe, Garbage Bag, Cotton Buds, Mobile Cover, Hand Wash, Household Items, Filter Cartridge, First Aid Kit, Gift Box, Pvc Box, Reflective Tape, Id Card, Ruler, Shower Head, Air Diffuser, Spacer, Blender, Nylon Strap, Treadmill, Trophy, Silicone Rubber, Smartphone, Wireless Charger,Automatic Soap Dispenser, Airpods, Cotton Swabs, Earbuds, Face Shield, Ferrule, Thermocol, Cat Litter, Key Ring,Scotch Brite, Apple Watch, Computer Table, Computer Mouse, Breast Pump, Welding Helmet, Baby Carrier, Boxing Gloves, Battery Terminals5%

mud <a href='https://www.ruidapetroleum.com/product/49'>pump</a> hs code quotation

F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous

A quintuplex mud pump has a crankshaft supported in the pump by external main bearings. The crankshaft has five eccentric sheaves, two internal main bearing sheaves, and two bull gears. Each of the main bearing sheaves supports the crankshaft by a main bearing. One main bearing sheave is disposed between second and third eccentric sheaves, while the other main bearing sheave is disposed between third and fourth eccentric sheaves. One bull gear is disposed between the first and second eccentric sheaves, while the second bull gear is disposed between fourth and fifth eccentric sheaves. A pinion shaft has pinion gears interfacing with the crankshaft"s bull gears. Connecting rods on the eccentric sheaves use roller bearings and transfer rotational movement of the crankshaft to pistons of the pump"s fluid assembly.

Triplex mud pumps pump drilling mud during well operations. An example of a typical triplex mud pump 10 shown in FIG. 1A has a power assembly 12, a crosshead assembly 14, and a fluid assembly 16. Electric motors (not shown) connect to a pinion shaft 30 that drives the power assembly 12. The crosshead assembly 14 converts the rotational movement of the power assembly 12 into reciprocating movement to actuate internal pistons or plungers of the fluid assembly 16. Being triplex, the pump"s fluid assembly 16 has three internal pistons to pump the mud.

As shown in FIG. 1B, the pump"s power assembly 14 has a crankshaft 20 supported at its ends by double roller bearings 22. Positioned along its intermediate extent, the crankshaft 20 has three eccentric sheaves 24-1 . . . 24-3, and three connecting rods 40 mount onto these sheaves 24 with cylindrical roller bearings 26. These connecting rods 40 connect by extension rods (not shown) and the crosshead assembly (14) to the pistons of the pump"s fluid assembly 16.

In addition to the sheaves, the crankshaft 20 also has a bull gear 28 positioned between the second and third sheaves 24-2 and 24-3. The bull gear 28 interfaces with the pinion shaft (30) and drives the crankshaft 20"s rotation. As shown particularly in FIG. 1C, the pinion shaft 30 also mounts in the power assembly 14 with roller bearings 32 supporting its ends. When electric motors couple to the pinion shaft"s ends 34 and rotate the pinion shaft 30, a pinion gear 38 interfacing with the crankshaft"s bull gear 28 drives the crankshaft (20), thereby operating the pistons of the pump"s fluid assembly 16.

When used to pump mud, the triplex mud pump 10 produces flow that varies by approximately 23%. For example, the pump 10 produces a maximum flow level of about 106% during certain crankshaft angles and produces a minimum flow level of 83% during other crankshaft angles, resulting in a total flow variation of 23% as the pump"s pistons are moved in differing exhaust strokes during the crankshaft"s rotation. Because the total flow varies, the pump 10 tends to produce undesirable pressure changes or “noise” in the pumped mud. In turn, this noise interferes with downhole telemetry and other techniques used during measurement-while-drilling (MWD) and logging-while-drilling (LWD) operations.

In contrast to mud pumps, well-service pumps (WSP) are also used during well operations. A well service pump is used to pump fluid at higher pressures than those used to pump mud. Therefore, the well service pumps are typically used to pump high pressure fluid into a well during frac operations or the like. An example of a well-service pump 50 is shown in FIG. 2. Here, the well service pump 50 is a quintuplex well service pump, although triplex well service pumps are also used. The pump 50 has a power assembly 52, a crosshead assembly 54, and a fluid assembly 56. A gear reducer 53 on one side of the pump 50 connects a drive (not shown) to the power assembly 52 to drive the pump 50.

As shown in FIG. 3, the pump"s power assembly 52 has a crankshaft 60 with five crankpins 62 and an internal main bearing sheave 64. The crankpins 62 are offset from the crankshaft 60"s axis of rotation and convert the rotation of the crankshaft 60 in to a reciprocating motion for operating pistons (not shown) in the pump"s fluid assembly 56. Double roller bearings 66 support the crankshaft 60 at both ends of the power assembly 52, and an internal double roller bearing 68 supports the crankshaft 60 at its main bearing sheave 64. One end 61 of the crankshaft 60 extends outside the power assembly 52 for coupling to the gear reducer (53; FIG. 2) and other drive components.

As shown in FIG. 4A, connecting rods 70 connect from the crankpins 62 to pistons or plungers 80 via the crosshead assembly 54. FIG. 4B shows a typical connection of a connecting rod 70 to a crankpin 62 in the well service pump 50. As shown, a bearing cap 74 fits on one side of the crankpin 62 and couples to the profiled end of the connecting rod 70. To reduce friction, the connection uses a sleeve bearing 76 between the rod 70, bearing cap 74, and crankpin 62. From the crankpin 62, the connecting rod 70 connects to a crosshead 55 using a wrist pin 72 as shown in FIG. 4A. The wrist pin 72 allows the connecting rod 70 to pivot with respect to the crosshead 55, which in turn is connected to the plunger 80.

In use, an electric motor or an internal combustion engine (such as a diesel engine) drives the pump 50 by the gear reducer 53. As the crankshaft 60 turns, the crankpins 62 reciprocate the connecting rods 70. Moved by the rods 70, the crossheads 55 reciprocate inside fixed cylinders. In turn, the plunger 80 coupled to the crosshead 55 also reciprocates between suction and power strokes in the fluid assembly 56. Withdrawal of a plunger 80 during a suction stroke pulls fluid into the assembly 56 through the input valve 82 connected to an inlet hose or pipe (not shown). Subsequently pushed during the power stroke, the plunger 80 then forces the fluid under pressure out through the output valve 84 connected to an outlet hose or pipe (not shown).

In contrast to using a crankshaft for a quintuplex well-service pump that has crankpins 62 as discussed above, another type of quintuplex well-service pump uses eccentric sheaves on a direct drive crankshaft. FIG. 4C is an isolated view of such a crankshaft 90 having eccentric sheaves 92-1 . . . 92-5 for use in a quintuplex well-service pump. External main bearings (not shown) support the crankshaft 90 at its ends 96 in the well-service pumps housing (not shown). To drive the crankshaft 90, one end 91 extends beyond the pumps housing for coupling to drive components, such as a gear box. The crankshaft 90 has five eccentric sheaves 92-1 . . . 92-5 for coupling to connecting rods (not shown) with roller bearings. The crankshaft 90 also has two internal main bearing sheaves 94-1, 94-2 for internal main bearings used to support the crankshaft 90 in the pump"s housing.

In the past, quintuplex well-service pumps used for pumping frac fluid or the like have been substituted for mud pumps during drilling operations to pump mud. Unfortunately, the well-service pump has a shorter service life compared to the conventional triplex mud pumps, making use of the well-service pump as a mud pump less desirable in most situations. In addition, a quintuplex well-service pump produces a great deal of white noise that interferes with MWD and LWD operations, further making the pump"s use to pump mud less desirable in most situations. Furthermore, the well-service pump is configured for direct drive by a motor and gear box directly coupling on one end of the crankshaft. This direct coupling limits what drives can be used with the pump. Moreover, the direct drive to the crankshaft can produce various issues with noise, balance, wear, and other associated problems that make use of the well-service pump to pump mud less desirable.

One might expect to provide a quintuplex mud pump by extending the conventional arrangement of a triplex mud pump (e.g., as shown in FIG. 1B) to include components for two additional pistons or plungers. However, the actual design for a quintuplex mud pump is not as easy as extending the conventional arrangement, especially in light of the requirements for a mud pump"s operation such as service life, noise levels, crankshaft deflection, balance, and other considerations. As a result, acceptable implementation of a quintuplex mud pump has not been achieved in the art during the long history of mud pump design.

What is needed is an efficient mud pump that has a long service life and that produces low levels of white noise during operation so as not to interfere with MWD and LWD operations while pumping mud in a well.

A quintuplex mud pump is a continuous duty, reciprocating plunger/piston pump. The mud pump has a crankshaft supported in the pump by external main bearings and uses internal gearing and a pinion shaft to drive the crankshaft. Five eccentric sheaves and two internal main bearing sheaves are provided on the crankshaft. Each of the main bearing sheaves supports the intermediate extent of crankshaft using bearings. One main bearing sheave is disposed between the second and third eccentric sheaves, while the other main bearing sheave is disposed between the third and fourth eccentric sheaves.

One or more bull gears are also provided on the crankshaft, and the pump"s pinion shaft has one or more pinion gears that interface with the one or more bull gears. If one bull gear is used, the interface between the bull and pinion gears can use herringbone or double helical gearing of opposite hand to avoid axial thrust. If two bull gears are used, the interface between the bull and pinion gears can use helical gearing with each having opposite hand to avoid axial thrust. For example, one of two bull gears can be disposed between the first and second eccentric sheaves, while the second bull gear can be disposed between fourth and fifth eccentric sheaves. These bull gears can have opposite hand. The pump"s internal gearing allows the pump to be driven conventionally and packaged in any standard mud pump packaging arrangement. Electric motors (for example, twin motors made by GE) may be used to drive the pump, although the pump"s rated input horsepower may be a factor used to determine the type of motor.

Connecting rods connect to the eccentric sheaves and use roller bearings. During rotation of the crankshaft, these connecting rods transfer the crankshaft"s rotational movement to reciprocating motion of the pistons or plungers in the pump"s fluid assembly. As such, the quintuplex mud pump uses all roller bearings to support its crankshaft and to transfer crankshaft motion to the connecting rods. In this way, the quintuplex mud pump can reduce the white noise typically produced by conventional triplex mud pumps and well service pumps that can interfere with MWD and LWD operations.

Turning to the drawings, a quintuplex mud pump 100 shown in FIGS. 5 and 6A-6B has a power assembly 110, a crosshead assembly 150, and a fluid assembly 170. Twin drives (e.g., electric motors, etc.) couple to ends of the power assembly"s pinion shaft 130 to drive the pump"s power assembly 110. As shown in FIGS. 6A-6B, internal gearing within the power assembly 110 converts the rotation of the pinion shaft 130 to rotation of a crankshaft 120. The gearing uses pinion gears 138 on the pinion shaft 130 that couple to bull gears 128 on the crankshaft 120 and transfer rotation of the pinion shaft 130 to the crankshaft 120.

For support, the crankshaft 120 has external main bearings 122 supporting its ends and two internal main bearings 127 supporting its intermediate extent in the assembly 110. As best shown in FIG. 6A, rotation of the crankshaft 120 reciprocates five independent connecting rods 140. Each of the connecting rods 140 couples to a crosshead 160 of the crosshead assembly 150. In turn, each of the crossheads 160 converts the connecting rod 40"s movement into a reciprocating movement of an intermediate pony rod 166. As it reciprocates, the pony rod 166 drives a coupled piston or plunger (not shown) in the fluid assembly 170 that pumps mud from an intake manifold 192 to an output manifold 198. Being quintuplex, the mud pump 100 has five such pistons movable in the fluid assembly 170 for pumping the mud.

The cross-section in FIG. 10A shows a crosshead 160 for the quintuplex mud pump. The end of the connecting rod 140 couples by a wrist pin 142 and bearing 144 to a crosshead body 162 that is movable in a crosshead guide 164. A pony rod 166 coupled to the crosshead body 162 extends through a stuffing box gasket 168 on a diaphragm plate 169. An end of this pony rod 166 in turn couples to additional components of the fluid assembly (170) as discussed below.

The cross-section in FIG. 10B shows portion of the fluid assembly 170 for the quintuplex mud pump. An intermediate rod 172 has a clamp 174 that couples to the pony rod (166; FIG. 10A) from the crosshead assembly 160 of FIG. 10A. The opposite end of the rod 172 couples by another clamp to a piston rod 180 having a piston head 182 on its end. Although a piston arrangement is shown, the fluid assembly 170 can use a plunger or any other equivalent arrangement so that the terms piston and plunger can be used interchangeably herein. Moved by the pony rod (166), the piston head 182 moves in a liner 184 communicating with a fluid passage 190. As the piston 182 moves, it pulls mud from a suction manifold 192 through a suction valve 194 into the passage 190 and pushes the mud in the passage 190 to a discharge manifold 198 through a discharge valve 196.

As noted previously, a triplex mud pump produces a total flow variation of about 23%. Because the present mud pump 100 is quintuplex, the pump 100 offers a lower variation in total flow, making the pump 100 better suited for pumping mud and producing less noise that can interfere with MWD and LWD operations. In particular, the quintuplex mud pump 100 can produce a total flow variation as low as about 7%. For example, the quintuplex mud pump 100 can produce a maximum flow level of about 102% during certain crankshaft angles and can produce a minimum flow level of 95% during other crankshaft angles as the pump"s five pistons move in their differing strokes during the crankshaft"s rotation. Being smoother and closer to ideal, the lower total flow variation of 7% produces less pressure changes or “noise” in the pumped mud that can interfere with MWD and LWD operations.

Although a quintuplex mud pump is described above, it will be appreciated that the teachings of the present disclosure can be applied to multiplex mud pumps having at least more than three eccentric sheaves, connecting rods, and fluid assembly pistons. Preferably, the arrangement involves an odd number of these components so such mud pumps may be septuplex, nonuplex, etc. For example, a septuplex mud pump according to the present disclosure may have seven eccentric sheaves, connecting rods, and fluid assembly pistons with at least two bull gears and at least two bearing sheaves on the crankshaft. The bull gears can be arranged between first and second eccentric sheaves and sixth and seventh eccentric sheaves on the crankshaft. The internal main bearings supporting the crankshaft can be positioned between third and fourth eccentric sheaves and the fourth and fifth eccentric sheaves on the crankshaft.

a crankshaft rotatably supported in the pump by a plurality of main bearings, the crankshaft having five eccentric sheaves and a first bull gear disposed thereon, the main bearings including a first internal main bearing sheave disposed between the second and third eccentric sheaves and including a second internal main bearing sheave disposed between the third and fourth eccentric sheaves;

a pinion shaft for driving the crankshaft, the pinion shaft rotatably supported in the pump and having a first pinion gear interfacing with the first bull gear on the crankshaft; and

6. A pump of claim 1, wherein the crankshaft comprises a second bull gear disposed thereon, and wherein the pinion shaft comprises a second pinion gear disposed thereon and interfacing with the second bull gear.

7. A pump of claim 6, wherein the first bull gear is disposed between the first and second eccentric sheaves, and wherein the second bull gear is disposed between the fourth and fifth eccentric sheaves.

8. A pump of claim 6, wherein the five eccentric sheaves, the first and second internal main bearing sheaves, and the first and second bull gears are equidistantly spaced from one another on the crankshaft.

9. A pump of claim 6, wherein the first and second pinion gears comprise helical gearing of opposite hand, and wherein the first and second bull gears comprise helical gearing of opposite hand complementary to the pinion gears.

a crankshaft rotatably supported in the pump by two external main bearings and two internal main bearings, the crankshaft having five eccentric sheaves, two internal main bearing sheaves for the internal main bearings, and at least one bull gear disposed thereon;

13. A pump of claim 11, wherein a first of the main bearing sheaves is disposed between the second and third eccentric sheaves, and wherein a second of the main bearing sheaves is disposed between the third and fourth eccentric sheaves.

16. A pump of claim 11, wherein the at least one bull gear comprises first and second bull gears disposed on the crankshaft, and wherein the at least one pinion gear comprises first and second pinion gears disposed on the crankshaft.

17. A pump of claim 16, wherein the first bull gear is disposed between the first and second eccentric sheaves, and wherein the second bull gear is disposed between the fourth and fifth eccentric sheaves.

18. A pump of claim 16, wherein the five eccentric sheaves, the two internal main bearing sheaves, and the first and second bull gears are equidistantly spaced from one another on the crankshaft.

19. A pump of claim 16, wherein the first and second pinion gears comprise helical gearing of opposite hand, and wherein the first and second bull gears comprise helical gearing of opposite hand complementary to the pinion gears.

a crankshaft rotatably supported in the pump by a plurality of main bearings, the crankshaft having five eccentric sheaves and first and second bull gears disposed thereon, the first bull gear disposed between the first and second eccentric sheaves, the second bull gear disposed between the fourth and fifth eccentric sheaves;

a pinion shaft for driving the crankshaft, the pinion shaft rotatably supported in the pump, the pinion shaft having a first pinion gear interfacing with the first bull gear on the crankshaft and having a second pinion gear interfacing with the second bull gear on the crankshaft; and

26. A pump of claim 21, wherein the main bearings include first and second internal main gearing sheaves disposed on the crankshaft, and wherein the five eccentric sheaves, the two internal main bearing sheaves, and the first and second bull gears are equidistantly spaced from one another on the crankshaft.

27. A pump of claim 21, wherein the first and second pinion gears comprise helical gearing of opposite hand, and wherein the first and second bull gears comprise helical gearing of opposite hand complementary to the pinion gears.

a crankshaft rotatably supported in the pump by a plurality of main bearings, the crankshaft having five eccentric sheaves and first and second bull gears disposed thereon, the main bearings including two internal main bearing sheaves disposed on the crankshaft, wherein the five eccentric sheaves, the two internal main bearing sheaves, and the first and second bull gears are equidistantly spaced from one another on the crankshaft;

a pinion shaft for driving the crankshaft, the pinion shaft rotatably supported in the pump, the pinion shaft having a first pinion gear interfacing with the first bull gear on the crankshaft and having a second pinion gear interfacing with the second bull gear on the crankshaft; and

34. A pump of claim 29, wherein the first and second pinion gears comprise helical gearing of opposite hand, and wherein the first and second bull gears comprise helical gearing of opposite hand complementary to the pinion gears.

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National Oilwell; "Triplex Mud Pumps;" Product Information Brochure; downloaded from http://nql.com/Archives/2000%20Composite%20Catalog/pg-32.html downloaded on Sep. 5, 2008.