Evolution of SCADA Networks

Transcription

1 Gas Well Deliquification Workshop Sheraton Hotel, February 23 26, 2014 Evolution of SCADA Networks Curt Goldman, Regional Manager OEM / Utility / Energy Markets at FreeWave Technologies

2 Revolutionary New Technologies Drilling and production have changed Data collection has changed Pad wells offer greater production Pad wells demand better and faster communication 2

3 What Changed? Higher volumes More need for real time information Greater demand for well optimization Greater need for minimizing downtime Greater need to maximize manpower 3

4 Old Systems One well per pad One radio per pad One set of production facilities per pad One plunger lift system per pad One gas meter per pad One tank battery per pad 4

5 New System Multiple wellheads Multiple casing pressures Multiple tubing pressures Multiple plunger lift Multiple valve control Multiple tanks Multiple measurement sites 5

6 Old 1200 To 9600 Analog Radios Analog radios Licensed frequency Bell 202 modems High power consumption Slow transmission 1200 to 9600 Kbps One repeater per network 6

7 Wireless I/O -- Modbus Modbus FGR2 IO-Slave #1 Modbus FGRIO-Slave #2 Modbus FGRIO-Slave #3 Modbus FGR2 IO-Slave # 65,535 FGR Family Master FGR Repeater The Modbus network functions as a stand alone Network and as such, the Modbus Master will not communicate with another FGR network as a slave. 7

8 Wireless I/O I/O Capacity 2 Analog Inputs 2 Digital Inputs 2 Analog Outputs 2 Digital Outputs Also supplies power for sensors Seven Days autonomy Depending on region No restrictions on end device sample rates 8

9 I/O Expansion Stacks Expansion I/O flexibility with stackable modules Customize I/O count for application AO, AI, DO, DI Pulse counting, 250 I/O possibilities 9

10 Wireless Plunger Installation Casing pressure AI-1 Tubing Pressure AI-2 Plunger arrival DI-1 Open valve DO-1 Close valve DO-2 **Wireless I/O allows multiple wells to be controlled using one RTU 10

11 Wireless Location Plunger Arrival Tubing Pressure Casing Pressure Flow Temperature Tank Levels Plunger Arrival Tubing Pressure Casing Pressure Flow Temperature Flow Temperature Separator Tank Flow Temperature EFM Plunger Arrival Tubing Pressure Casing Pressure Flow Temperature Plunger Arrival Tubing Pressure Casing Pressure Flow Temperature Plunger Arrival Tubing Pressure Casing Pressure Water Tank Levels Oil Tank Levels Flow Temperature 11

12 Multiple Layers of Communication Wireless from wellhead to EFM Wireless from tank battery to EFM Wireless from compressor to SCADA host Wireless from EFM to backbone Wireless from backbone to back haul Wireless back haul to SCADA Multiple hosts in multiple locations 12

13 Communication Layers Wellhead Well site communications Medium speed backbone High speed backhaul Instrumentation layer Measurements/SCADA layer Ethernet to Serial conversion layer Ethernet multiple megabytes 13

14 Communication Layers Layer 1 Sufficient I/O count to handle Casing pressure Analog in Tubing pressure Analog in Valve control Digital out Tank levels Analog in Chemical injection Digital in Sump level Analog in Water meter Pulse counter 14

15 Communication Layers Layer 4 backhaul from backbone to IT department Very high speed layer multiple megabytes per second Must be Ethernet Typically require AC power Typically located on commercial towers 15

16 Reduce Polling Times With plunger lift & 24 hour custody transfer data, each poll can be 5,000 to 10,000 bytes of data Ethernet addressing allows for polling multiple masters at once Serial network 1 master polling 400 slaves takes 90 minutes Ethernet network 8 masters polling 400 slaves takes 11 minutes 16

17 How Do I Use This? 17

18 Economics Install cost Wireless I/O saves $1,000 per wellhead 10 wells per pad $10,000 Digital radios use $500 per site less power Lifecycle cost More robust products Lower cost of replacing power systems Better diagnostic tools 18

19 Summary An ounce of planning is worth a pound of cure. Detailed path studies Network design Must be expendable and scalable from day one 19

20 Questions? Ken Henderson 20

21 Thank You! 21

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