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© 2011 Extreme Telematics Corp. 1 ALiEn 2 /ALiEn 2 Expert Plunger Lift Controller Overview.

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Presentation on theme: "© 2011 Extreme Telematics Corp. 1 ALiEn 2 /ALiEn 2 Expert Plunger Lift Controller Overview."— Presentation transcript:

1 © 2011 Extreme Telematics Corp. 1 ALiEn 2 /ALiEn 2 Expert Plunger Lift Controller Overview

2 © 2011 Extreme Telematics Corp. 2 Agenda Overview Configurations Controller Operation

3 © 2011 Extreme Telematics Corp. 3 Overview

4 © 2011 Extreme Telematics Corp. 4 Highlights Reliable Operation in Canada –-40 ºC to +70 ºC Operating Temperature –Rechargeable Battery provides 8+ months Standby Power CSA Certified –Class 1, Div 1, Groups C & D Features –Modbus Communication Interface –Time/Velocity Based Optimization –Pressure Based Optimization

5 © 2011 Extreme Telematics Corp. 5 Highlights Rugged Design –Steel enclosure with locking door –Easy to remove electronics module Easy to use Menu Based Interface –Arrows and numbers –Hot Keys Easy to Install –Flexible connections –Lots of space –Universal Mounting Bracket

6 © 2011 Extreme Telematics Corp. 6 Model Comparison ALiEn 2 ALiEn 2 Expert Battery6V, 4.5 Ah6V, 7.2 Ah Standby Time5+ months8+ months Valves1 – 21 – 3 Input DevicesPAS, LPPAS, LP, CP/DP Timer OptimizationAdditionalIncluded CommunicationsRS-485 Modbus2 x RS-485 Modbus

7 © 2011 Extreme Telematics Corp. 7 Mounting Universal Mounting Bracket –Wall –Vertical/Horizontal Stud –Vertical/Horizontal Pipe

8 © 2011 Extreme Telematics Corp. 8 Solenoids Gas Connections –Supply gas side stamped IN –Valve side stamped CYL –Vent routed to the back Solenoid Service –Unscrew vent –Pull body up –Allows access to piston/spring

9 © 2011 Extreme Telematics Corp. 9 External Electrical Solar –2 wire connection –Polarity matters Grounding –Lug supports up to 4 AWG Plunger Arrival Sensor (PAS) Line Pressure Casing Pressure/Differential Pressure

10 © 2011 Extreme Telematics Corp. 10 Plunger Arrival Sensor (PAS) Supported Sensors –ETC PAS Low Power Rugged Teck Cabled Adjustable Sensitivity –Most other 2/3 Wire sensors May be disabled if one not present

11 © 2011 Extreme Telematics Corp. 11 Line Pressure (LP) 2 Wire (Murphy) Switch –Tripped switch prevents controller from opening the well –Automatically forces well to close 3 Wire Transducer –Shows numerical value for Line Pressure –Allows for custom trip/reset points –Specific low power model from ETC must be used.

12 © 2011 Extreme Telematics Corp. 12 Casing Pressure (CP) 2 Wire (Murphy) Switch –Tripped switch prevents controller from opening the well until Casing Pressure is high enough –Automatically forces well to close on low Casing Pressure 3 Wire Transducer –Shows numerical value for Casing Pressure –Allows for custom trip/reset points –Use with LP for Casing-Line Differential –Enhanced optimization modes utilize the behaviour of CP –Specific low power model from ETC must be used.

13 © 2011 Extreme Telematics Corp. 13 Differential Pressure (DP) 2 Wire (Murphy) Switch –Automatically forces well to close on low Differential Pressure 3 Wire Sensor –Shows numerical value for Differential Pressure –Allows for custom trip/reset points –Use with LP and orifice plate settings to calculate flow –When using flow, daily production totals are summed. –Low Power 1151 or 3051CD from Rosemount must be used if powered from plunger lift controller.

14 © 2011 Extreme Telematics Corp. 14 Outputs Programmable –Default Device Operation –Mimic Valve Operation –Alarm Call Out Connections –Uses the PWR pin from LP or CP/DP –Can only be used when connections not in use by primary devices

15 © 2011 Extreme Telematics Corp. 15 COM Ports RS485 2 Wire Differential COM1 acts as a Modbus Slave COM2 used as a Modbus Master or Pass Thru Integrate with existing SCADA Use web based access –Zedi –MRL –Bentek IS Barrier required COM1 used to upgrade the controller

16 © 2011 Extreme Telematics Corp. 16 User Interface

17 © 2011 Extreme Telematics Corp. 17 Screen Layout State/Menu –Left hand side screen shows the current controller state. –Scroll up or down to access other screens/menus Cycle Information Current Date/Time Status –Right hand side screen scrolls through valve status and device status automatically.

18 © 2011 Extreme Telematics Corp. 18 Menu Navigation Navigation Keys –Arrows move in and out of menus, used to scroll up and down. –Select confirms a value or enters a menu –Cancel undoes an edit or moves backward Numeric Keys –Enter in numerical settings directly

19 © 2011 Extreme Telematics Corp. 19 Shortcut Keys Close –Starts the close portion of the cycle –Navigates back to the status screen Open –Starts the open (rise) portion of the cycle –Navigates back to the status screen Settings –Brings up the settings menu –A list of all timers and basic set points

20 © 2011 Extreme Telematics Corp. 20 Shortcut Keys History –Rise Time Log shows the last 25 plunger arrival times –Cycle Log shows a detailed log of the last 25 cycles –Daily Log shows a summary of the last 14 days plus the current day. Install –Takes the user to the install menu.

21 © 2011 Extreme Telematics Corp. 21 Install Menu One Level of Sub Menus –Date/Time - Set current date/time –System – Serial number, Firmware Version, and Errors –Security – Installer/Operator passwords –Well Setup – Well information and velocities –Inputs – Configure Inputs –Outputs – Configure Outputs –Alarms – Fast Trip, Non-Arrival –Optimize – Optimization Mode, Input Behaviour –Modbus – Communication Settings

22 © 2011 Extreme Telematics Corp. 22 Configurations

23 © 2011 Extreme Telematics Corp. 23 Configurations Sales Valve –Factory default

24 © 2011 Extreme Telematics Corp. 24 Configurations No Arrival Sensor

25 © 2011 Extreme Telematics Corp. 25 Configurations Top Valve

26 © 2011 Extreme Telematics Corp. 26 Configurations Flow Tee

27 © 2011 Extreme Telematics Corp. 27 Configurations Tank Valve

28 © 2011 Extreme Telematics Corp. 28 Configurations Optimization: Pressure Switches

29 © 2011 Extreme Telematics Corp. 29 Configurations Optimization: Casing/Line Differential Pressure

30 © 2011 Extreme Telematics Corp. 30 Configurations Optimization: Differential Pressure

31 © 2011 Extreme Telematics Corp. 31 Configurations Optimization: Flow Rate

32 © 2011 Extreme Telematics Corp. 32 Controller Operation

33 © 2011 Extreme Telematics Corp. 33 The Complete Cycle

34 © 2011 Extreme Telematics Corp. 34 The Complete Cycle Rise –Monitor arrival sensor –Sales Valve open. –Declare fast-trip if plunger arrives early (fast-trip time). –Declare non-arrival when rise time expires. –Switch to Tank Valve B when tank delay time expires. –Will not be shown if the arrival sensor is disabled.

35 © 2011 Extreme Telematics Corp. 35 The Complete Cycle Afterflow Delay –Only entered if: Valve B enabled, AND Afterflow delay time > 0 –Delays switching of valves to the afterflow configuration –Allows time for fluid slug to exit the well-head.

36 © 2011 Extreme Telematics Corp. 36 The Complete Cycle Afterflow –Only entered if Afterflow time > 0 –Valves: Sales: open Valve B: configurable –Exits when: Afterflow or Max Open Timers expire, or Line pressure “trips”

37 © 2011 Extreme Telematics Corp. 37 The Complete Cycle Extended Afterflow –Entered if there are “extended flow” devices enabled or timer optimization is enabled –Same valve settings as afterflow. –Exits when: Pressure or flow rate conditions change, or Max Open timer expires, or Line pressure “trips”, or Extended Afterflow Timer expires (Timer Optimization)

38 © 2011 Extreme Telematics Corp. 38 The Complete Cycle Close –Entered following flow states. –Allows time for plunger to fall. –All valves closed. Auto-catcher released. –Exits when: Min Close timer expires, AND Pressure conditions change –Line pressure switch or sensor –Casing Pressure switch or sensor –Casing/line pressure differential

39 © 2011 Extreme Telematics Corp. 39 The Complete Cycle Non-Arrival Close –Entered when a “non-arrival” is declared. –Allows extra time for pressure to build in the well-bore. –All valves closed. Auto-catcher released. –Exits when: Non-Arrival close timer expires, AND Pressure conditions change.

40 © 2011 Extreme Telematics Corp. 40 The Complete Cycle Stopped –Entered when: A number of consecutive non-arrivals have occurred. A number of consecutive fast-trips have occurred. Low battery. –All Valves closed.

41 © 2011 Extreme Telematics Corp. 41 Timer/Velocity Optimization Optimization Modes include: –Afterflow Optimization –Close Optimization –Close Then Afterflow Optimization

42 © 2011 Extreme Telematics Corp. 42 Timer/Velocity Optimization Set times manually or set well depth and desired velocities. Each plunger arrival is evaluated compared to the Target Rise Time. Modifies the Close and/or Afterflow times to get the plunger to arrive at the specified target time/velocity.

43 © 2011 Extreme Telematics Corp. 43 Target Rise Miss Early/Late Arrival –Early window is Target Rise Time –Late window is Rise Time – Target Rise Time –Plunger misses are represented as a percentage

44 © 2011 Extreme Telematics Corp. 44 Afterflow Optimization Extended Afterflow Optimization –Miss percentage multiplied by Scale Factor and subtracted from Extended Afterflow Percentage. –Actual time calculated from Extended Afterflow Percentage and Remaining Flow Time

45 © 2011 Extreme Telematics Corp. 45 Close Optimization Extended Close Optimization –Miss percentage multiplied by Scale Factor and added to Extended Close Percentage. –Actual time calculated from Extended Close Percentage and Remaining Flow Time.

46 © 2011 Extreme Telematics Corp. 46 Close Then Afterflow Close Time is optimized first. When we run out of close time to optimize (either min or max is reached), Afterflow Time is then optimized.

47 © 2011 Extreme Telematics Corp. 47 Pressure Optimization Casing Pressure Casing-Line Differential Pressure Differential Pressure Flow Rate

48 © 2011 Extreme Telematics Corp. 48 Casing Pressure Optimization Close Optimization –Stay in close until Casing Pressure is high enough –Stay in close until Casing Line Differential is High Enough Extended Afterflow Optimization –Exit Extended Afterflow when Casing pressure has bottomed out and then risen a predetermined amount. –Exit Extended Afterflow when the Rate of Change of Casing Pressure slows Down and the Trip Delay timer expires. –Exit Extended Afterflow when Casing pressure drops below specified set point.

49 © 2011 Extreme Telematics Corp. 49 Casing/Line Pressure Optimization Uses Casing – Line Differential Pressure

50 © 2011 Extreme Telematics Corp. 50 Differential Pressure Optimization Extended Flow Optimization –Low Differential Pressure

51 © 2011 Extreme Telematics Corp. 51 Differential Pressure Optimization

52 © 2011 Extreme Telematics Corp. 52 Flow Rate Optimization Sensors –Differential Pressure and Line Pressure –Analog Flow Sensor –Discrete Flow Sensor –Virtual Flow Sensor Automatically sums daily production values.

53 © 2011 Extreme Telematics Corp. 53 Flow Rate Calculations Fixed parameters –Optimize Menu Gas temperature Specific gravity Meter run size Orifice size Max Differential Pressure (150 “WC by Default) –Changes not applied until start of next cycle. Simplified gas flow calculations –AGA 3 Table Based (Not EUB compliant) –Process inaccuracies

54 © 2011 Extreme Telematics Corp. 54 Flow rate optimization cycle


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