A Cost Effective Means to Transmit Real-Time and Archived Well Data
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1 A Cost Effective Means to Transmit Real-Time and Archived Well Data 4/17/2017A Cost Effective Means to Transmit Real-Time and Archived Well DataBy: Abdullah Alkhalifah, P&CSD/PCD/PASU24-25 November 2008
2 Outline Overview of SCADA Technology 4/17/2017OutlineOverview of SCADA TechnologySCADA Evolution in Oil & Gas OperationsOperational Requirement and system ArchitectureData Acquisition over Low Speed NetworksProposed MethodChallenges and OpportunitiesConclusion2
3 Overview of SCADA Technology 4/17/2017Overview of SCADA TechnologyAlarm Handling and Acknowledgment in ServerSCADA Vs DCS … a common questiondata-gathering oriented.Uses Shared Data Network/open protocolsHardened Environmental Spec.Server RedundancyNumber of IO’s 50K/Server3
4 Overview of SCADA Technology 4/17/2017Overview of SCADA TechnologySCADA Vs DCS … a common questionAlarm Handling and Acknowledgment in ControllerDCS is process orientedDCS use proprietary network/Protocol.DCS Controller Environmental Spec.Controller RedundancyNumber of IO’s Less than 5K /ctrl4
5 SCADA Evolution in Oil & Gas Operations 4/17/2017SCADA Evolution in Oil & Gas Operations60’s and earlierSimple Press & Temp Gauges on the wellhead.In Plant Well Testing FacilitiesLocal Logging on well data.80’sRemote Testing Facilities.Automated Logging of well data.2000+Specialized Inelegant Subsystem P/T/Q readings and Data logging.
6 Data Scan on High speed Links 4/17/2017Data Scan on High speed LinksHigh Speed, High BandwidthSegregation and SecurityData Storage and retrieval on comm failure.Device capabilityFile FormatSCADA Communication Network F.OPDHMMPFMESPLog File
7 Number of MODBUS slave can be accessed FileFormatFile SizeMBScanFreq.(sec)Percentage of channel utilization dedicated to real-time communications20%35%50%65%80%XML6.1813251714117410352822158CVS3.563125191362513927Binary0.991891109069482211801389755Short Binary0.33665441291633227020814583665540416291166
8 Data Scan on low speed Links 4/17/2017Data Scan on low speed LinksSCADA Communication NetworkSerial, UHF RadioPDHMMPFMESP
9 Data Scan on low speed Links 4/17/2017Data Scan on low speed LinksSCADA Communication NetworkSerial, UHF RadioPDHMMPFMESP
10 Challenges and Opportunities 4/17/2017Challenges and OpportunitiesCurrent RealityFunctional Specification Document for each project.Different approach for the same requirement.Communication Protocol features.Tele-Control Communication Network by IT.Multiple services on the same network.Impact on real time data.Segregation of Process Data/IT servicesI-Field requirements.1 sec Data Update Time, No data lost, Data storage at field device.Several Specialized DevicesScan rate for each application.
11 Saudi Aramco Initiatives 4/17/2017Saudi Aramco InitiativesStandardizationStandard Functional Specifications Document.Identify specific requirement for each application.Provide Standard Implementation methodology.New Engineering StandardStandard Communication Protocol.SCADA Communication Architecture Best practices.International Initiatives such as Intelligent Well Instrumentation Standardization (IWIS).
12 Summary Standardize Functions Implementation methodology. 4/17/2017SummarySCADA Applications are Evolving.Demand for more Reliable at High scan rate DATA is increasing.Communication Infrastructure Plays Major role on the over all SCADA Performance.User looks for Fully Integrated solution (SCADA+RTU).User Support Open Industry Standard communication Protocols.Standardize Functions Implementation methodology.