Leveraging Hybrid Networks

Transcription

1 Gas Well Deliquification Workshop Sheraton Hotel, February 19 22, 2012 Leveraging Hybrid Networks Dan Steele, Manager - Oil & Gas Market FreeWave Technologies

2 Combining Different Technologies Ethernet Cell Phone Land Line Licensed Radio Spread Spectrum Satellite Microwave 2

3 Volume of Data? How much data per poll? What is baud rate? How long will it take to poll each site? Quick equation Sample Equations 40,000 bytes of data 1200 baud = 33 seconds per poll 40,000 bytes of data Kbaud = less than 1 second per poll Can I poll more than one device at a time? 3

4 Frequency of Polling? How often should you poll? Once an hour? Once a day? 4 times per day? 17 seconds per site, times 200 sites = 57 minutes per polling cycle (1per hour) What is best fit Best Fit? 4

5 Emerging Technologies Ethernet is quickly becoming de facto standard for industrial communications, replacing serial and data bus technologies. Why? Ethernet accommodates a wide range of applications Universally supported by communications equipment manufacturers Encapsulates industrial equipment protocols Ease of configuration and low cost of implementation

6 Purpose Given the cost benefits and flexibility of wireless Ethernet communications, many SCADA professionals are looking to migrate to IP out to the field and convert existing serial communications to Ethernet. Civilization advances by extending the number of important operations which we can perform without thinking about them. This quote was almost 100 years ago by: Alfred North Whitehead 6

7 Why Wireless Wellhead Optimization? In the world of Well Optimization - real time information is critical to performance. The more data you can see on your performance the more you can fine tune your wells. Ethernet allows you to see Near Real time Data. Polling 200 wells with serial radios can take hours, with Ethernet it takes seconds. Major Producer in Colorado has 1800 wells, it took them 5 hours to poll the field once with serial radios, with Ethernet it takes 5 minutes. 7

8 What do I gain by going Wireless? Better (Faster) plunger control at lower cost Real time pressure and line status Lower cost No trenching No Wiring Real time alarms Tank Levels Pump Shut down Compressor Shut down 8

9 Question # 1 Is this technology secure? YES, but not all radios are created equal. Commonly accepted security features include: AES Encryption 128, 256, FIPS Central Radius Authentication MAC Address Filtering Dynamic Key Substitution VLAN Tagging 9

10 Question # 1 - continued Cryptography maintains privacy of data even when potentially being accessed in transit by encrypting and later deciphering the data at the end-points Today, the Advanced Encryption Standard ( AES ) is the industry standard for encryption of data In June 2003, the U.S. Government announced that AES may be used to protect even classified information AES-128 (most common cipher) may be used for classified information at the SECRET level 10

11 Question # 1 - continued "RADIUS (Remote Authentication Dial In User Service) Authentication Verification of identity based on unique credentials, passwords, e.g. unit serial number Authorization Only grant network access to authorized devices, disallow access to all others Overall an important security feature to prevent unauthorized access and intrusion 11

12 Question # 1 - continued Standardized wireless products off the shelf are designed for simple and easy access This makes intrusion attempts ( hacking ) of off-the-shelf standardized wireless products in industrial environments a lot easier (and a lot more attractive) Even hacking software tools are easily available on the Internet In contrast, proprietary wireless technology makes it more difficult for intruders to gain access to the signal, If FHSS modulation is being used and If user-controlled settings are being used to individualize and properly 12 secure a wireless network

13 Question # 1 - continued Limitation of permitted activities on the wireless network Firewalls and Packet Filters Access Limitation of local ports User level access (password protected) Transport Layer Security (SSL) Cryptographic protocols that provide communication security over the Internet Virtual LAN (VLAN) Local Area Network that maps workstations on some other basis than geographic location (for example, by department, type of user, or primary 13 application)

14 Question # 1 - continued 14

15 Question # 2 How do I integrate Ethernet in my existing serial network? First, why not just go all Ethernet? Millions of dollars invested in legacy serial systems Easy migration path Two Options IP Addressability in serial radios or serial to IP convertors 15

16 Question # 2 - continued Actual system using Ethernet backbone connected to Serial Masters 16

17 Question # 2 (cont d) Second Option: Ethernet Radio with built-in terminal server 17

18 Question # 3 What advantages can I expect? Speed, translating into faster polling times 18

19 Question # 3 (cont d) 19

20 Question # 3 (cont d) WAN / LAN Cloud Cell Bridge Repeater from Cell Bridge 20

21 Question # 4 What does it cost? Many solutions available Average around $1K per radio for approx. 1Mbps throughput Typically the higher the throughput, the more expensive Other Associated Costs Antennas Coax Battery and solar, if applicable Power consumption key on solar 21

22 Question # 5 Can I have mobile connectivity? Absolutely, wireless Ethernet offers a significant advantage in terms of workforce mobility. Allows mobile workers to access applications and perform their job where they work. Keep in mind line-of-sight will offer best throughput. Depending on topography, at times, technicians will be required to drive to a nearby hill top or open area. 22

23 Question # 6 Can I speed my polling times and if so, by how much? YES! However, two factors come into play with hybrid systems Serially, only one connection at a time How many connections can the host software support? 23

24 Question # 7 Can I have multiple sites polling the sites? YES! IP addressability of Ethernet allows packets to be routed. Example: A Local Area Network (LAN) 24

25 Question # 8 Can I communicate with legacy serial devices? YES! Two options» Wireless Ethernet (with serial interface) to the field, or» Use of a serial radio with IP addressability 25

26 Question # 9 Can I communicate Modbus through Ethernet? YES! The radio system is replacing the physical communications layer and can be connected via serial data port. 26

27 Question # 10 Can I communicate with remote instrumentation? 27

28 Question # 11 What frequency backbone should I use? Options include 900MHz, 2.4 GHz, 5.8GHz or Licensed GHz The lower the frequency, typically the better propagation characteristics. However, lower frequencies are much more congested Recommendation to perform spectral analysis for area 28

29 Question # 12 How do I plan for the network backbone? First Consideration is Line-of-Sight Tower availability and locations RF Path Study 29

30 Question # 13 How many repeaters can I use? Most manufactures do not support repeaters in Ethernet products. However, if repeaters are supported, an unlimited number may be used. If repeaters are enabled, users will typically take a throughput hit in terms of performance. 30

31 Question # 14 Who can design and install a backbone for me? This may be the hardest question of all to answer. Many companies that design and install one brand of radio are often aligned with specific manufactures. Often the best choice is to discuss performance expectations with several vendors and have the manufacture recommend a factory trained and certified reseller/integrator in the area. 31

32 Question # 15 Is this technology reliable? A properly designed and installed wireless Ethernet system should be % reliable. Discuss return rates with potential suppliers. Temperature Range Reliable Operation within industrial temperature ranges (i.e. -40 to +75 C). Operation in Hazardous Environments UL certification for Class 1, Division 2 environments permitting radio operation in the presence of flammable or explosive gases, fluids or vapors. 32

33 Summary Ethernet is becoming the standard for communications Wireless Ethernet offers significant advantages When implementing new wireless architecture, asking all the right questions is a great place to start. Information is Power The ability to gather time critical information, digest it and react to it is the key to continuously adapting to change with increasing reliability and profitability. Wireless Ethernet offers this ability 33

34 Questions? 34

35 THANK YOU! Dan Steele Manager Oil & Gas Markets Elk Ridge, UT Mobile: Tel: ) Fax: * dsteele@freewave.com Web: 35

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