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PROGRESSING CAVITY PUMP SYSTEMS


One Company, Unlimited SolutionsSince 1841, National Oilwell Varco™ has been dedicated to ensuring customers receive the highest quality oilfield products and services. National Oilwell Varco is a worldwide leader in the design, manufacture and sale of equipment and components used in oil and gas drilling and production operations, the provision of oilfield services, and supply chain integration services to the upstream oil and gas industry. NOV™ also provides supply chain services through its network of more than 200 distribution service centers located near major drilling and production activity worldwide.

We continue to build upon our unlimited, customer-focused solutions and are proud to deliver our Artificial Lift Systems through the NOV Mono division.

The NOV Mono division is a true partner and worldwide source for complete Artificial Lift equipment and packaged solutions. Our Artificial Lift professionals collaborate with you to properly evaluate well conditions and provide customized artificial lift solutions that will optimize your production.

• Professional Well Evaluation• Surface and Subsurface Equipment• Controllers and Production Automation• All Production Accessories and Expendables• Global Supply Chain thru NOV Wilson

NOV MonoArtificial Lift Systems Coverage

LLOYDMINSTER, CANADA HOUSTON, TEXAS

www.nov.com/Ar t i f ic ialL i f tN O V- M o n o - A L S @ n o v. c o m

Progressing Cavity Pump SystemsNOV Mono is a leader in the design, manufacture and supply of progressing cavity pumps (PC Pumps) and artificial lift solutions worldwide. With over 75 years of experience, 8 international sites and global distribution network, we provide a range of PC Pump solutions that fulfill many oilfield production needs. Our line of downhole PC Pumps are designed for use in both oil production and dewatering applications where the economics of production demand efficiency, reliability and low life-cycle cost from the production equipment.

Common Applications• Heavy Crude (aggressive geometry)• Medium Crude• Coal Bed Methane – CBM (specialized elastomers)• Shale Oil and Water• High GOR Wells

Features and Benefits• Lower Capital Cost

The lack of expensive foundations, simple construction and the compact surface drive units reduce start-up costs which allow for more pumps to be installed and more oil recovered.

• Lower Running CostTypically, a PC pump has an overall efficiency rating of 70% which is significantly higher than alternative lift methods and lowers the cost per barrel of recovered fluid.

• ReliableThe simple construction consists of only one moving part downhole and has no standing or traveling valves to block. The pump handles gas and solids without blocking and is more resistant to abrasive wear.

• Environmentally Acceptable ProfileThe low, unobtrusive profile of the quiet running surface drivehead makes the PC pump ideal for environmentally sensitive areas. Also, state of the art Leak Detection Stuffing Boxes help protect the environment from spills.


Progressing Cavity Pump Specifications

m3/Day/100rpm- m of lift

Bbl/Day/100rpm- ft of lift

in in in in in in in 2⅞” 3½” 4½” 5½”

2-1000 13-33002” ACME Box x 2’ Weld Ext.§ 2.25

73¾ API Pin 1.50

642⅜

• • • •2-2000 13-6550 126 113 • • • •2-3000 13-9850 175 162 • • • •4-600 25-2000

2⅞ Pin 3.148

¾ API Pin 1.5063

2⅜• • •

4-1200 25-4000 98 110 • • •4-1800 25-6000 147 158 • • •5-1000 28-3300

2” ACME Box x 2’ Weld Ext.§2.25 126

¾ API Pin 1.50113 2⅜ • • • •

5-1500 28-5000 175 162 • • • •5-2000 28-6550 224 211 • • • •7-1050 44-3450

2” ACME Box x 2’ Weld Ext.§ 2.25

175

¾ API Pin 1.50

162

2⅜• • • •

7-1400 44-4600 224 211 • • • •7-1750 44-5750 273 260 • • • •7-2100 44-6900 322 309 • • • •9-1000 56-3300

2.2 Box x 2’ Weld Ext.§ 2.76

148

⅞ API Pin 1.63

113

2⅜• • •

9-1500 56-5000 197 162 • • •9-2000 56-6550 246 211 • • •9-2500 56-8200 295 260 • • •10-600 60-2000

2⅞ Box† 3.566

⅞ API Pin 1.6880 • •

10-1200 60-4000 131 146 2⅞ • •10-1800 60-6000 196 211 • •13-1500 82-5000 3½ Box 4.2 131 1 API Pin 2.13 146 3½ •15-1400 95-4600

2⅞ Box† 3.5 172 ⅞ API Pin 1.93 1872⅞ • •

15-1800 95-6000 222 237 • •16-840 100-2750

2.2 Box x 2’ Weld Ext.§ 2.76

197

⅞ API Pin 1.63

162

2⅜• • •

16-1120 100-3650 246 211 • • •16-1400 100-4600 195 260 • • •16-1680 100-5650 344 309 • • •17-750 107-2500

2⅞ Box† 3.579

⅞ API Pin 1.9594 • •

17-1000 107-3300 106 121 2⅞ • •17-1500 107-5000 158 173 • •21-660 131-2150

2.2 Box x 2’ Weld Ext.§ 2.76

197

⅞ API Pin 1.63

162

2⅜• • •

21-880 131-2900 246 211 • • •21-1100 131-3600 295 260 • • •21-1320 131-4350 344 309 • • •24-600 150-2000

2⅞ Box† 3.5

106

⅞ API Pin 1.79

121

2⅞

• •24-900 150-3000 158 173 • •24-1500 150-5000 262 277 • •24-1800 150-6000 316 331 • •24-3000 150-9850 527 542 • •32-600 200-2000

3½ Box x 2’ Weld Ext.* 4.5

132

1 API Pin 2.27

123 • •32-900 200-3000 185 176 • • •32-1200 200-4000 238 229 • •32-1500 200-5000 292 284 2⅞ • •32-1800 200-6000 346 337 • • •40-750 250-2500

2⅞ Box† 3.5172

⅞ API Pin187 • •

40-1125 250-3750 258 1.81 273 2⅞ • •40-1500 250-5000 344 359 • •44-900 280-3000

3½ Box x 2’ Weld Ext.* 4.5175

1 API Pin 2.20166 • • •

44-1400 280-4600 274 265 2⅞ • •44-1800 280-6000 326 317 • • •54-600 340-2000 185 176 • •54-900 340-3000


266

1 API Pin 2.27

257

2⅞• •

54-1200 340-4000 346 337 • • •54-1500 340-5000 427 418 • •54-1800 340-6000 507 498 • • •64-520 400-1750


185

1 API Pin 2.26

176

2⅞• • •

64-800 400-2650 266 257 • •64-1040 400-3400 346 337 • • •64-1300 400-4300 427 418 • •70-900 440-3000

3½ Box x 2’ Weld Ext.* 4.5201

1⅛ API Pin 2.64192 •

70-1350 440-4400 290 281 3½ •70-1800 440-6000 378 369 •80-800 500-2650


201

1⅛ API Pin 2.58

192

3½

•80-1000 500-3300 246 237 •80-1200 500-4000 290 281 •80-1600 500-5300 378 369 •80-1800 500-6000 423 414 •96-520 600-1750


201

1 API Pin 2.29

192 • • •96-800 600-2650 290 281 • •96-1040 600-3500 378 369 2⅞ • • •96-1300 600-4300 467 458 • •96-1560 600-5350 555 546 • • •98-1200 615-4000

4½ Box ** 5.5263

2⅜ PAC Pin 2.97285

98-1580 615-5200 350 372 4½98-1800 615-6000 399 421110-1600 690-5300

4½ Box ** 5.5 3502⅜ PAC Pin 2.97 372

4½110-1800 690-6000 399 421120-400 755-1350


201

1 API Pin 2.26

192

2⅞

• •120-600 755-2000 290 281 • •120-800 755-2650 378 369 • •120-1000 755-3300 467 458 • •120-1200 755-4000 555 546 • •130-1300 820-4300

4½ Box ** 5.5 3502⅜ PAC Pin 2.91 372

4½130-1625 820-5380 438 460150-600 940-2000


378

1 API Pin 2.26

369

2⅞• • •

150-750 940-2500 467 458 • •150-900 940-3000 555 546 • • •150-1200 940-4000 732 723 • •165-1200 1030-4000

6⅝ BTC Pin 6.6 3012⅞ PAC Pin 3.99 322

5½165-1800 1030-6000 402 428200-1200 1260-4000 7 LTC Pin 7.0 301

2⅞ PAC Pin 4.33 3225½200-1800 1260-6000 402 428

Top Connection EUE Max O.D. Length Top Connector Max O.D. Length Min. Tubing Size Tubing Sizes Optional Optional

PUMP STATOR ROTOR INSERTABLESLIMHOLED

STATORHIGH TEMP

MECH. BONDED

Slimhole stators have a 3.82” O.D. and a 2⅞” EUE Box Top Connection. Length increases by 28” with a weld on Tag Bar or by 6” without.Available with optional 4½” LTC Pin x 2’ Weld Extension.Supplied with a 2⅜” EUE Box Adapter for use in non-insert applications.Available with optional 3½” EUE Box connection. Max O.D. increases to 4.18” and length increases by 4”.Available with optional 5½” LTC Pin.All models with a 2’ weld extension are available with an optional 4’ weld extension.Additional lift options may be available for some models. Please contact an NOV Mono representative for more information.

^

*§†**

^


Rotors, Stators and Elastomers

Performance by DesignRotors are available in alloy steel (4140) with hard chrome plating which provides resistance to abrasion and wear. All pumps have 1:2 ratio lobe geometry and rotor chrome thickness within 0.010 and 0.020 inches.

Through the use of advanced manufacturing technology and modern production techniques, finite machining and plating of the rotor profile is maintained, ensuring that the design performance is always achieved.

ElastomersA range of stator elastomers is available allowing the pump to be selected for many downhole fluid conditions as described below.

Rotors and Stators

Elastomer Type General Description and Application Temperature Limit Tensile Strength Tear Strength Abrasion Resistance H2S Resistance CO2 Resistance Hardness (IRHD)

QS(Soft Nitrile)

•Very soft medium acrylonitrile content with good oil and solvent resistance and excellent abrasion resistance•Typically used in very abrasive and high water cut

applications with low aromatic content fluids

80°C Good Good Excellent Good Poor 48-53

OD(Soft Nitrile - Buna L)

•Soft medium acrylonitrile content with good oil and solvent resistance and excellent abrasion resistance•Typically used in medium abrasive and high water

cut applications with low aromatic content fluids

90°C Good Excellent Excellent Good Fair 60-65

RR(Nitrile)

•Medium acrylonitrile content with good oil and solvent resistance•Excellent abrasion resistance and mechanical

properties•Typically used in abrasive and high water cut

applications with low to medium aromatic content

100°C Good Excellent Excellent Good Good 68-72

OBX(High Nitrile)

•High acrylonitrile content with improved oil and solvent resistance and excellent mechanical properties•Higher acrylonitrile content provides extra

resistance to oils with medium to high aromatic content

100°C Excellent Excellent Excellent Good Fair 70-75

OC(Hydrogenated Nitrile)

•High acrylonitrile content with similar properties to OB but with improved resistance to hydrogen sulfide (H2S) and high temperature capability

150°C Excellent Good Excellent Excellent Fair 69-75


Two Run Insertable PC PumpNOV Mono has an innovative, new insertable progressing cavity pump design that allows the customer to insert a pc pump inside the production tubing and pressure test the tubing string with one easy to use tool.

Features and Benefits• There is no need for a service rig to

pull the production tubing to change a downhole pump

• Pump changes can be done with a flush-by equipped for rod handling

• The unit minimizes the need to remove production tubing, reducing the cost of downhole gauge installations

• Allows for pressure testing the production tubing as well as the primary seal, while inserting the stator.

• The system has the ability to use any progressing cavity pump without performing any modifications.

• The system can pull the rotor out of the well bore without unseating the primary seal.

Mechanically Bonded StatorWell temperatures can increase due to natural conditions and the use of thermal stimulation techniques. These conditions challenge the viability of the traditional chemically bonded pc pump stator.

One way to address this challenge is through new methods of anchoring the elastomers into the stator tube. NOV Mono has developed elastomeric stator technology to meet demands of high temperature wells.

The mechanically bonded stator is comprised of 3 main components (not including the elastomer):

• Stator Tube• Mechanical Bond Inserts• End Caps

Available in two elastomer grades:

• OBX suitable for temperatures up to 110° C• OC suitable for temperatures up to 150° C

Available sizes:

D32-900 (1 raw) D96-1040 (2 raw) D54-1800 (3 raw)D44-900 (1 raw) D150-300 (1 raw) D64-1560 (3 raw)D54-1200 (2 raw) D32-1800 (2 raw) D96-1560 (3 raw)D64-1040 (2 raw) D44-1800 (2 raw) D150-600 (2 raw)

Rotor

Operating Position

Insert Position

Insert Tool

Seating Nipple

Tag-Bar

Torque Anchor

Seating Mandrel with Primary Seal

Stator


NO-GO™ Tag Progressing Cavity PumpsThe NO-GO Tag system is a new advanced generation tool for rotor placement in progressing cavity pumps. It provides all the functionality of a traditional bottom tag bar system with the following advantages.

Features and Benefits• Tags within the stator, leaving intake free of obstruction, allowing rotor to agitate solids• Coilable through the pump by only pulling up polish rod• Protects top end of stator elastomer by guiding coil entry through the pump• Positive tag for proper rotor placement by guiding rotor through timed helical tag passage into

stator elastomer• Unique integrated design eliminates flow losses and extra connections• Tags using a conventional rod box• Ability to land pump lower in well• Eliminates costly mechanical tools below the pump while maintaining circulation clean-out

capabilities

Application• Medium to heavy oil• Wells producing solids (sand, coal fines, pyrite, etc.)• Wells with history of intake plugging• Wells with minimal cellar

Specialty Components

Charge PumpsProblem wells that produce slug sand, water, and/or gas can benefit from the use of a Charge Pump. These pumps have 3 main parts:

• Perforated Stator - High Gas Rate Applications• Hollow Rotor - Breaking up solids at intake

• Production Pump - determines your lift capacity and final volume.• Pup Joint - usually located between the two pumps and has additional holes or

slots depending on the application.• Charge Pump - higher volume, lower pressure pump that maintains consistent

wellbore fluid by mixing it before entering the production pump.

Charge Pumps

Production Pump 10 15 24 32 40 44 54 64 70 80 96 120 150

Charge Pump 10 40 or 24 40 96 40 96 150

Bottom or Top View

NO-GO Tag Insert


Hydraulic Driveheads

M-90HNOV Mono’s M-90H hydraulic drivehead utilizes a bent axis motor that is coupled to a hollow shaft bearing box by a belt and pulley system, which transfers torque to the polished rod. Backspin is controlled through the hydraulic system. The motors are available in a variety of displacements to accommodate a wide variety of speeds and torques.

Features and Benefits of the M-90H Hydraulic Drivehead• Motor is available in various displacements • Standard synchronous belt and sheave system• Fully enclosed hinged belt guard

M-85HEach model of the NOV Mono M-85H hydraulic drivehead is a beltless top drive using gears to transfer torque to the polished rod. The precision ground gears reduce noise levels by up to five times in comparison to conventional belt drives, making the M-85H drivehead an ideal solution for use in populated areas. Each M-85H drive utilizes a radial piston motor designed to reduce internal friction and run efficiently. These driveheads are fitted with a hydraulically activated stuffing box that can withstand any progressing cavity pumping application.

Features and Benefits of the M-85H Hydraulic Drivehead• Enclosed gear housing eliminates need for belts, thus reducing field

maintenance• Case hardened and precision ground gears drastically reduce noise levels.• Gear drive utilizes a radial piston motor connected to the input gear, and

is available in various displacements• Pressurized stuffing box prevents fluid from entering the seal chamber

extending the life of the seals• Built in polished rod vise allows stuffing box seal change without removal of

drivehead or flush-by rig

Technical SpecificationsModel M-90H M-85H

Max. System Pressure 3600 psi (245 kPa) 3500 psi (24,132 kPa)

Max. System Temperature¹ 175 °F/ 80 °C 176 °F/80 °C

Polish Rod Size 1¼" (32 mm) 1¼" (32 mm)

Wellhead Connection 2d” EUE Pin38-3000 psi-R31 Flange4z -3000 psi-R37 Flange58-2000 psi-R41 Flange58-3000 psi-R41 Flange

38”-3000 psi-R31 Flange

Thrust Bearing² Ca90-25,000 lbs /ISO-96,300 lbs

Ca90-33,500 lbs /ISO-129,000 lbs

Backspin Control Check valve on pressure side of the motor.

Check valve on pressure side of the motor.

Torque Control Adjustable pressure compensator on pump.

Adjustable pressure compensator on pump.

Model M-90H M-85H

Variable Speed Control Adjustment knob on the pump. Adjustment knob on the pump.

Height Integral 31" (787 mm) 31" (787 mm)

Height Retrofit 47" (1194 mm) N/A

Width 29" (737 mm) 24" (610 mm)

Weight Integral 400 lbs (181 kg) 240 lbs (109 kg)

Weight Retrofit 450 lbs (204 kg) N/A

Bearing Box Grease Chevron Delo Grease EP NLGi2 1 tube (Chevron Ulti-Plex Synthetic Grease)

¹ Maximum operating temperature may be limited by hydraulic oil. ² Ca90 load rating is for 90 million revolutions at 500 rpm. Reducing load by 50% increases life 10 times. Reducing speed by 50% doubles hours of life.

M-90H Hydraulic Drivehead

M-85H Hydraulic Drivehead


Electric DriveheadsNOV Mono provides a complete line of Electric Driveheads for all your production needs.

Features and Benefits• Robust frame• Detachable stuffing box• Operator-friendly guards and motor adjustments• Easy-to-adjust door for simple belt tightening• Accessible fill/drain spouts for easy oil changes• Bearing box is designed with a three-bearing system (Models M-100, M-150,

M-300, and M-60)• Hollow shaft bearing box (Model M-30)• Hydrodynamic brake (Models M-100, M-150, M-300, and M-60)• Hydraulically actuated caliper disc braking system (Model M-30)• Brake reservoir for heat dissipation (Models M-100, M-150, M-300, and M-60• Service and technical support

Technical SpecificationsModel M-30 M-60 M-100 M-150 M-300

Drive Type Direct Direct Direct Direct Direct

Shaft Type Hollow Hollow Hollow Hollow Hollow

Drive Style Bearing Box Bearing Bearing Box Bearing Box Bearing Box

Input Style Vertical Vertical Vertical Vertical Vertical

Drive Ratio 1:1 1:1 1:1 1:1 1:1

Backspin Control Caliper Disc Hydrodynamic Hydrodynamic Hydrodynamic Hydrodynamic

Ratings

Max. Output Torque 600 ft-lbs (813 Nm) 1575 ft-lbs (2135 Nm) 2000 ft-lbs (2712 Nm) 2500 ft-lbs (3390 Nm) 3500 ft-lbs (4745 Nm)

Thrust Bearing 96,300 ISO lbf 128,000 ISO lbf 195,000 ISO lbf 227,000 ISO lbf 310,000 ISO lbf

Thrust Bearing¹ 25,000 Ca90 lbf 33,000 Ca90 lbf 50,500 Ca90 lbf 59,000 Ca90 lbf 80,400 Ca90 lbf

Maximum Speed 500 rpm 600 rpm 600 rpm 600 rpm 600 rpm

Horsepower Rating² 10 - 30 10 - 60 20 - 100 80 - 150 120 - 300

Frame Type Single Single Motor Single Motor Dual Motor Dual Motor

Polish Rod Size 1¼” (32 mm) 1¼” (32 mm) 1¼” or 1½”(32mm or 38 mm) 1½” (38 mm) 1¼” or 2”

(38 mm or 51mm)

Max. Operating Temp. 180°F / 80°C 212°F / 100°C 212°F / 100°C 212°F / 100°C 212°F / 100°C

Dimensions

Height with Retro. Stuffing Box 34” (864mm) 44” (1118mm) 50” (1270mm) 55” (1397mm) 64” (1626mm)

Width 30” (762mm) 35” (889mm) 35” (889mm) 41” (1041mm) 42” (1067mm)

Input Shaft Size 2½” (64 mm) 3¼” (83 mm) 3¼” (83 mm) 3¼” (83 mm) 4¼” (108mm)

Weight 600 lbs (272kg) 1350 lbs (612kg) 1350 lbs (612kg) 1700 lbs (771kg) 2100 lbs (953kg)

¹ Ca90 load rating is for 90 million revolutions. Reducing load one half increases life 10 times. Reducing rpm by one half doubles hours of life.² Maximum HP rating based on frame size only. Care must be taken in selecting motor and sheave combinations to ensure input rod torque is not exceeded.

M-100 Electric Drivehead






Leak Free Stuffing BoxThe NOV Mono Leak Free (LF) stuffing box is a pre-built assembly that has been exclusively designed to simplify monitoring seal wear. It consists of a double mechanical seal supplied in a single sealed cartridge.

Features and Benefits• Designed with a two bearing system consisting of seal bearings designed to be

in one cartridge for easy replacement which results in less downtime during maintenance

• Can be mounted directly on drivehead with or without a booth• Utilizes a double mechanical seal supplied as a sealed cartridge, to deliver extended periods of leak free

operation and contains any leaked fluid inside the unit• Double sealing mechanism performs an improved sealing function.• Easy fitting of the cartridge arrangement with no setting requirement normally associated with conventional

mechanical seals; seal abuts bearing to set working length• Positive drive from the spindle via key through sleeve of the mechanical seal• All sealing faces are made from solid material for increased pressure and thermal stability• Equipped with a leakage detection unit which provides a visible indication to any breach of the primary seal

and also ensures barrier fluid lubrication of the seal faces for maximum durability• The leakage detection unit can be reset after seal replacement

Hydrodynamic BrakeThe Hydrodynamic Brake consists of a stationary half (stator) and a rotary half (rotor). The stator is bolted into the housing and the rotor is coupled to the shaft. During normal operation the rotor spins freely. When the unit goes into backspin, the rotor begins to rotate in the counter clockwise direction. The working fluid is then forced to the outside of the rotor and creates a circular flow path inside the brake cavity. As the energized fluid from the rotor comes into contact with the stationary fins of the stator, the energy is transferred to the stator and then back to the working fluid as heat. A small amount of working fluid is continually removed from the system and replaced with new fluid. The working fluid contained in the drivehead reservoir is used as the braking medium, which allows the energy stored in the fluid column and rod string to safely dissipate without the drivehead reaching excessive backspin speeds.

Features and Benefits• Non-friction brake eliminates wear on brake components• Brake capable of 2000 ft-lbs resisting torque at 250 hp• Reliable and repeatable braking• Backspin energy is absorbed by the working fluid• Heat generated by braking is dissipated by the fluid reservoir• Consistent braking with minimal maintenance throughout the

drivehead’s life

Brake Stator

Brake Rotor

Hydrodynamic Brake Curves


VFD ControllerThe NOV Mono Progressing Cavity Pump Controller provides a number of features specifically designed for operation of progressing cavity pumps. The drive combines motor and pump control into a single, compact package that increases production, improves energy efficiency and enhances the reliability of both new and existing pumping systems.

Multiple Constraint OptimizationAt any instant during the life of a well, there is a single constraint that limits production. Production can be maximized without compromising efficiency or reliability by forcing the system to operate at the constraint limiting production at each instant of time. Determining the applicable limits and moving smoothly between them in real time is a key advantage of the system. Models of all the system elements are run in real time at the wellhead to detect appropriate limits and enforce associated control strategies. At different points in time, the system may be limited by motor voltage, motor current, motor speed, motor torque, motor thermal capacity, power demand, rod string torque, flow line pressure, fluid level, or well inflow. Multiple constraint optimization is particularly beneficial in applications with variable inflow conditions, such as those found in coal-bed methane, high gas/oil ratio, and thermally stimulated wells.

Sensorless OperationThe drive uses a number of unique methods for precisely determining performance parameters from models of the pumping system elements without requiring external surface or downhole sensors. Sensorless system variables including rod speed, rod torque, pump speed, pump torque, fluid flow, fluid level, suction pressure, discharge pressure, and differential pressure can be observed through the drive keypad/display or recorded as circle charts and time-based plots. Fluid level, pump flow, and total production are displayed in selectable engineering units.

Sophisticated ModelingEmbedded mathematical models of the drive, motor, drive head, rod string, pump, flow line, tubing, casing, fluid, and reservoir use component specifications and well completion information along with field setup parameters to monitor pumping system operation. Identification routines automatically determine installation-dependent system parameters including those of the motor, rod string, and pump. The models capture the thermal, mechanical, electrical, and hydraulic behavior of the system to control the pumping process with greater precision than ever before.

Pump Speed ControlThe drive provides a number of options for manual, remote, and automatic control of pump speed. Speed commands can be selected from a number of sources including potentiometer adjustments, keypad presets, serial data communications, and internal optimization controllers. The motor can be operated up to twice base speed at constant power. This allows the overall gear ratio to be increased, thereby providing increased low-speed torque without loss of maximum pump speed. Dual motors can be controlled from a single drive for operation of large pumps. The system can be configured for optimization of fluid production, gas production, energy efficiency, and/or power flow.

National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user’s risk and are the user’s responsibility.

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D392004432-MKT-001 Rev. 04

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progressing cavity pump systems - oilproduction · progressing cavity pump systems nov mono is a...

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