Sensorlink Company, Products and Markets · 2019-02-08 · Corrosion monitoring made easy 5...
Transcript of Sensorlink Company, Products and Markets · 2019-02-08 · Corrosion monitoring made easy 5...
Sensorlink
Subsea erosion monitoring of choke elbow using ultrasound
ISO 9001:2008 certifiedIECEx certified
Jan-Tore Ervik, CMOEmail: [email protected]: +47 900 69 640
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Company Facts
• Established in 1997
• We were a spinoff from SINTEF (one of Europe’s largest R&D foundation)
• Head office in Trondheim, Norway• Sensorlink specializes in innovative
solutions for pipeline integrity management based on ultrasound technology
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• Production of formation sand is one of the oldest problems in oil and gas industry.
• Sand control refers to managing/minimizing sand production during petroleum production.
• If you try to reach zero sand production it will in many cases put very high restrictions on the field production potential, which will lead to loss of revenue and possibly put projects on hold or abandoned.
• So you have to accept sand production, but manage the integrity of your production systems through design where at least these two factors are important:
• Erosion allowance on your production system/piping
• Sand production handling
Sand/particle control
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• Sand and fine particles produced with oil and gas can cause
• well plugging
• production downtime
• expensive repairs
• erosion and wear of production equipment
• and potentially loss of containment (serious safety risk).
• Sand control can be active and passive.
• Active sand control is the most common and implies the use of mechanical devices, typically a pipe with different types of slots or a screen
• Passive sand control is based on oriented perforation or controlled drawdown
Sand/particle control
Examples of mechanical sand control devices
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Intrusive, most common to use erosion probes
• Erosion probes wear, has to be replaced
• One spot/place, can not be moved. If put in the ‘wrong’ place it will give wrong readings
• Integrity of the production system – you need to drill a hole in the pipe and do welding. Has to remove pressure from the system or use high pressure tool to replace probe
• The erosive elements are normally made of materials with erosive properties similar to the pipework
• Often assumed that the particles are homogenously distributed over the pipe cross section, which may not be the case
Intrusive erosion monitoring
Flow
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UltraMonit® SEC Erosion Monitoring Non intrusive erosion monitoring using Single Element Pulse/Echo Transducers
• Non-Intrusive• Direct wall thickness measurement of pipe wall• Not sensitive to pipe wall thickness• Works through solid coatings (FBE, 3LPP, PE, etc.)• Possible to separate pipe wall front and back wall echo’s
when used on coating.• Does not discriminate between erosion and corrosion• Embedded temperature transducers enables temperature
compensation
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• No need for calibration:- speed of sound in steel is known - time of flight is measured using a crystal
• Fixed sensors combined with advanced signal processing detects wall loss of less than .1 mills (2.5 micrometres)
• Free forming sensor matrix to suit corrosion/erosion phenomena
Pulse-echo:
𝑑 =𝑡 ∙ 𝑐
2c – speed of sound in steelt – time d – wall thickness
UltraMonit® SEC Erosion Monitoring Non intrusive erosion monitoring usingSingle Element Pulse/Echo Transducers
www.sensorlink.noCorrosion monitoring made easyCorrosion monitoring made easy
UltraMonit® SEC Erosion Monitoring
• Based on an array of single element Pulse/Echo Transducers
• Provide real time online wall thickness data
• Subsea clamp with sealing
• Pressure compensated
• Retrieveable datalogger
• Can be stand alone system with batteries or connected to subsea control system
www.sensorlink.noCorrosion monitoring made easyCorrosion monitoring made easy
UltraMonit® SEC Erosion Monitoring
TECHNICAL DATAOutput data: Wall thickness, wall loss, erosion rate and temperature on pipeDesign life: 30 yearsTemperature range: -40 to +150 °C (-58 to 302 Fahrenheit)Water depth: up to 3 000 meters/ 9 000 ftPipe size: > 4 inches OD (0.1 meter)Wall thickness: >3 mmCoating materials: PE/PP/FBERepeatability: 2,5 µm (0.01 mils)Absolute accuracy: 0.1mm (4 mils)API 17F qualified: YESTransducer configuration: OptionalNon-intrusive: Yes
ELECTRICAL DATAPower supply: 9-36 VDC – battery solution possibleTypical power consumption: Idle mode <0,25W, measuring <3WCommunication options: Ethernet (SIIS level 3), Modbus TCP/IP, CanBus (SIIS Level 2), RS485
Array of transducersSubsea clamp with sealing
Retrieveable datalogger
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Data retrieval
Subsea connection
Topside network
Central Control System
Sensorlink service access
Modbus/Canbus/Ethernet/RS485
Sea level
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All installation in a choke has to be done dry, before deploying the choke subsea
To cover the bend thoroughly it is necessary to mark the position of each sensor cassette
UltraMonit® SEC Erosion Monitoring Installation
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UltraMonit® SEC Erosion Monitoring
Transducer holder assembly mounted on pipe
Transducer holders covering the bend
One half of the Retrofit clamp mounted on bend
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UltraMonit® SEC Erosion Monitoring
Both half’s of the retrofit clamp installed on the bend
Electronic box with i/o cards
Electronic box with lid and connectors
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UltraMonit® SEC Erosion Monitoring
Compensator added to withstand pressure
Design is made due to cramped space inside subsea choke module
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UltraMonit® SEC Erosion Monitoring
Erosion pattern example as per flow assurance analysis
Sensors placed for optimal coverage between 11-1 o’clock
Temperature sensors placed around the bend
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Absolute wall thickness
Green color- thicker pipe
Blue color – thinner pipe
This is according to specifcations of the bend due to the production method.
Absolute wall thickness measurements performed was according to wall thickness measured by producer of bend
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Erosion pattern
Green color – no, or very little, erosion
Blue color – highest wall loss
Reading the blue colors we find the erosion to be according to the pattern expected from flow analysis
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Erosion vs flow
Blue curve – wall thickness trend curve
Green curve – flow rate
You can see some correlation between flow rate and erosion, but the flow rate measurmeents has some uncertainty so it can not be 100% confirmed.
With confirmed data from both erosion monitoring and flow rate this tool could be used to adjust flow rate to find swet spot of production compared to erosion.
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• Sand/particle production is a problem for the industry
• There are several ways of controlling and monitoring sand production and erosion
• When monitoring erosion it is important to monitor the correct locations and get good areal coverage
• UltraMonit SEC® erosion monitoring has been installed and used with good results
• UltraMonit SEC® intrument will give high accuracy (2,5 µm resolution) and good areal coverage, which will give valuable input to production engineers
Summary
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Questions?
Email: [email protected]
Phone: +47 900 69 640
Thank you for the attention!
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With Sensorlink up and above!