The Energy Flows Through Us® The Energy Flows Through Us™
VARIABLE SPEED DRIVE
Speed Control and Well Monitoring Package for Rod Pump Applications For wells that require the next level in pump control, Lufkin’s Variable Speed Drive unites pump-off control with the ability to fluctuate pump speed for enhanced productivity on every stroke. Fully integrated Lufkin Well Manager™ technology provides accurate and immediate downhole information the Drive uses to match pump rate to the well’s inflow in real time. Even as conditions change, the Variable Speed Drive ensures your pump runs at an optimal speed for peak production.
Lufkin.com/Automation ©2013 Lufkin Industries LLC. All rights reserved. OF11-0002-R01
Key Features ■
Optimizes pump down for maximum production per cycle
■
rogrammable interstroke speed changes for P precise speed control
■
Automatic pump override prevents mechanical damage
■
omprehensive well diagnostics for anticipating C production complications
■
n-site and remote access to user-defined parameters O for additional safety and control
■
odbus programming allows adjustment via unit LCD M display or remote SCADA interface
■
rotects equipment from damage and thermal P motor overload
Variable Speed Drive
Real Time Stroke Management Analysis Load (LB) 4623
Current Stroke Set Point
3641
The Variable Speed Drive with Lufkin Well Manager™ technology gives you ultimate control when your well can’t be shut down.
2660 1678
Deadband No change within optimal performance range
696 -1285 -11266
Current Pump Fillage Speed is increased if fillage rises above limit
Current Pump Fillage Speed is decreased if fillage drops below limit
-12248 -13230
Protects Your Equipment and Investment
-14211
85% Pump Fillage Setpoint minus deadband
-15193 0
18
37
95% Pump Fillage Setpoint plus deadband 56
The Variable Speed Drive (VSD) protects your equipment by adjusting pump speed as well conditions change to avoid working load
75
Position (IN)
violations or motor overload. An incorporated Lufkin Well Manager
A real-time stroke management analysis shows how the LWM with VSD continually monitors, analyzes, records, and adjusts pump speed to match any variations within a well.
RPC Ver. 6.14 CS: 06206EC1 07-25-2011 14:02 RPC Status Screen RTU Address 0145 Current Well State Pumping-Normal Mode Elapsed Time 000:07:17 Control Mode VSD-DH Operation Mode Normal Minimum Pump Strokes 005 Downtime 000:05(hh:mm) Guage Off Time(GOT) 00:00 Run Yesterday 100 % 24:00 (hh:mm) Run Since GOT 099 % 14:10 (hh:mm) Liquid Oil Water TBGas bbls bbls bbls mscf SWT Since GOT 0149.8 0134.9 0014.9 112.5 Yesterday SWT 0235.7 0212.2 0023.5 172.8 Inst SWT (per day) 0277.7 0250.0 0027.7 175.7 Projected SWT (per day) 0251.0 0225.9 0025.1 188.6 Pump Fillage 089.57 % Pumping Speed 06.94 spm VFD Speed Command 0050.0 Hz VFD Output Speed 049.93 Hz LUFKIN AUTOMATION [NEXT] Next Screen
User-friendly LCD display lets you choose default Quick Start settings or adjust VSD and LWM parameters as needed.
(LWM) monitors all aspects of production, such as pump fillage and torque, while the VSD uses that information to choose the best pump speed, facilitiating sustained pumping and improving productivity.
Lufkin VSDs are the ideal solution for ■
Fluid with high sanding
■
Heavy crude production
■
Steam flood operations
■
Low bottom-hole pressure
■
Pump sticking
Customize to Your Well Conditions The VSD cabinet arrives wired with LWM technology, so even workers with limited experience can set up the unit and activate Quick Start programming to view and edit default parameters that are appropriate for most well conditions. For situations that require
Display Type: SURFACE & DOWNHOLE Current State: Pumping-Normal Mode .... 000:02:15 Load(lbs) Curr Load 32979 13524 CurrPosn 28898 103.41 PeakLoad 28898 Present 20735 32273 Allowed 16653 33000 12572 8490 4408 327 -3754 -7835 0 42 84 127 Position (in) [DELETE]-Clear Screen
Min Load Present 13321 Allowed 12000 Pmp Fillage Set %090.0 Curr 098.9 Consec 013 Calc Fluid Load 6310 169 SPM 06.93
System automatically adjusts speed based on dynamometer card readings for optimal production and pump down.
2
Lufkin.com/Automation ©2013 Lufkin Industries LLC. All rights reserved. OF11-0002-R01
precise control, settings can be fine-tuned on the fly using the cabinet LCD monitor or a remote SCADA interface. Easily customized monitoring and speed settings also give you the option to program the unit to automatically stop, settle at a pre-defined speed, or travel at different interstroke speeds — all to match your well conditions. The VSD system stays in tune with your well’s production by constantly adjusting pump speed based on dynamometer card readings. It will also slow a pumping unit just enough to avoid working load violations, helping manage rod float problems and peak rod load issues with heavy oil.
Variable Speed Drive
Variable Speed Drive Specifications Power Rating Power Supply
Rated Output
10-200 HP, 7.5-150 kw Voltage
460 V (+10%, -20%) or 600 V (+10, -15%)
Frequency
50/60 Hz (±5%)
Phase
Three Phase or Single Phase (derated to 50%)
Voltage
0-Max input voltage
Frequency Range
0.01-500 Hz
Overload Current Rating
150% for 60 seconds, 165% for 2 seconds
Dynamic Braking Circuit
Built-in IGBT 7
Motor Control
Sensorless Vector or V/Hz
Protection
Built-in surge protection that meets UL 1449, Rev 3
Built-in Filter
460 V 10-150 HP: Built-in EMI noise filter (EN5501 Class A, EN61800-3 category 3 compliant) 460 V 25-100 HP (18.5-75 kW), Built-in DC Reactor
Built-in DC Link Reactor
460 V 125-200 HP (90-112.5 kW), Attached AC Reactor
Cooling Method
Forced air
Ambient Temperature/ Relative Humidity
-40 to 60°C (derate above 50°C), 0-95% relative humidity, non-condensing (as integrated package)
Enclosure
NEMA 3R
Altitude
Full output to 1,000 m (3,281 ft) elevation Derate 1% for each additional 100 m (328 ft)
Lufkin Well Manager Features 2500+ status registers SPM RPM Peak/min load Pump fillage Production trending and event logs 60 day history Programmable oil cut Pump leakage Last 400 point load report Surface and downhole dynamometer cards (current & historical) Remote control via SCADA interface Modbus master programming Advanced RTU features Expanded I/O capability Register logging, calculator, alarms
Logic expression AGA 3/NX-19 gas flow calculation
Lufkin.com/Automation ©2013 Lufkin Industries LLC. All rights reserved. OF11-0002-R01
3
Variable Speed Drive
Front
Additional Equipment for Even Better Performance
Side
Harmonic Filters Where power quality may be of concern,
A
Lufkin passive and active harmonic filters reduce harmonics levels below 10 percent. Call us to ask about harmonics mitigation options that could work for you.
C
Dynamic Braking Resistors Add a Dynamic Braking Resistor (DBR) kit to prevent over-speeding during negative
B
torque cycles. Lufkin DBR kits are easily installed and available for a variety of well
D
conditions. Each kit includes cooling fans
E
and a thermal protection unit.
Lufkin VSDs are available in five cabinet sizes to meet your site requirements.
Dimensions: in (mm) B C D
E
Weight lb (kg)
31 (787)
20 (508)
335 (151)
70 (1778)
34 (864)
22 (559)
415 (188)
24 (610)
70 (1778)
34 (864)
24 (610)
495 (224)
52 (1321)
18 (457)
70 (1778)
38 (965)
26 (660)
645 (269)
62 (1575)
10 (254)
72 (1778)
38 (965)
26 (660)
845 (384)
460V HP Range
600V HP Range
10-30
10-30
34 (864)
36 (914)
70 (1778)
40-50
N/A
46 (1168)
24 (610)
60-100
40-100
46 (1168)
125-150
N/A
200
N/A
A
The DBR mounts to the top of the VSD cabinet for effective, out-of-the-way operation.
Automation Headquarters 811 Willow Oak Drive Missouri City, Texas 77489 p: (281) 495-1100 f: (281) 495-6333
[email protected] Lufkin.com/Automation ©2013 Lufkin Industries LLC. All rights reserved. OF11-0002-R01
