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Electric Compression Applicationat the WellheadBill Elmer, P.E.Engineering AdvisorEOG Resources, Inc.EOG Master-1
Compression Application at the WellheadGas Sales:25 to 1000 HPGaslift:75 to 250 HPEOG Master-2
Gas Engines Predominant– Electric Driven Compressors a RarityWhy?Fuel Gas Readily Available- Makes for quick startup- Little time to plan power linesRental compression with engine onlyfleets utilized by most all E&PCompanies despite disadvantages of:- Air Permitting- Emission Control Testing- Emission Equipment Maintenance- NoiseMost E&P Companies lackengineering staff to tackle electricinfrastructure issuesEOG Master-3
Typical Electric Driven Compressor Installations- Usually done when infrastructureconstruction is minimal (lower costand quicker timing)- Older compressors converted fromgas engine drive very common- Rental companies usually requirelong term rental contracts thatessentially buy the compressor- Rental fees not loweredcommensurate with the loweredpackage cost (motors far cheaperthan engines)-Rental fees not loweredcommensurate with the lowermaintenance costsEOG Master-4
What is changing to make electric drivencompressors more common?Technology: Variable Frequency Drivesmore cost effective No inrush current allowsexisting electricinfrastructure to supportload Speed control capabilitiesallow far greater turndownthan turbo-charged enginesallow (50% vs 25%)EOG Master-5
What is changing to make electric drivencompressors more common?Regulations: Noise levels withengines often requireexpensive sound walls orbuildings to mitigate.Electric compressors arequieter. Air regulations requirenew engines to meet lowemission standards evenat low horsepower,elevating their cost anddecreasing their reliabilityEOG Master-6
What is changing to make electric drivencompressors more common?Availability: Some rental companieswilling to build electricdriven packages with shortterm (1 year) contracts New products beingoffered to serve thewellhead, such as the newCameron Ajax C-202EOG Master-7
What is changing to make electric drivencompressors more common?ElectricalInfrastructureAssistance: Marketers of electricpower see untappedmarket potentialEOG Master-8
Cameron Ajax C-202 CompressorTwo Throw Separable 250 HPEOG Master-9
Cameron Ajax C-202 CompressorQuiet cooler with independent VFD controlled fan motorsEOG Master-10
Cameron Ajax C-202 CompressorConventional 1185 RPM electric motor operates compressor at 440 RPMEOG Master-11
Cameron Ajax C-202 CompressorProven Ajax long stroke 11” stroke cylinders provide efficiency and loading versatilityEOG Master-12
Cameron Ajax C-202 CompressorWalkaround VideoEOG Master-13
Cameron Ajax C-202 CompressorHorizontal opposed cylinder design provides smooth operationEOG Master-14
Electric Compression Application at the Wellhead Thanks to EOG Resources for supporting this project andpresentation. Thanks to Cameron and Tristar, who worked together tomake are really nice product for industry.EOG Master-15
gas engine drive very common - Rental companies usually require long term rental contracts that essentially buy the compressor - Rental fees not lowered commensurate with the lowered package cost (motors far cheaper than engines)-Rental fees not lowered commensurate with the lower maintenance costs. EOG_Master-5 What is changing to make electric driven compressors more common?
