CaTS Technology – Reducing Reservoir Uncertainty...
Transcript of CaTS Technology – Reducing Reservoir Uncertainty...
CaTSTM Technology – Reducing Reservoir Uncertainty During Exploration & Appraisal
Roger Hunt – Sales Manager, Wireless Well Solutions NOG Tech Conference June 2013
The Expro Group
CaTS Presentation Overview
• Technology overview
• System Components
• Advanced Reservoir Testing
• Q&A
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Introducing the Expro WWS Business Unit
Aberdeen
Stirling
Great Yarmouth
Reading Wireless Well Solutions Ringwood, Hampshire
• A 2004 New Technology Acquisition - specialising in downhole wireless telemetry
• Focussed business unit with 60+ employees
• World class expertise in digital signal processing and harsh environment electronics design
• Pursuing an ambitious vision focused on delivering the “Wireless Reservoir” with a focus on solutions that provide:- Safety enhancement Production optimization An improved reservoir understanding
leading to the optimal exploitation of reserves
• The Wireless products and services are delivered to the global market via a team of WWS specialists working in close co-operation with the Expro regional teams
Expro UK Facilities
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What is the CaTS Technology?
CaTS is a field proven Cableless Telemetry System capable of transmitting
pressure and temperature data from a downhole transmitter to a surface receiver in real time using electro magnetic (EM) signals.
CaTS technology is retrofittable and can be installed into an existing well.
CaTS telemetry is duplex and thus also capable of transmitting commands from surface to a downhole receiver; this enables the control of downhole components.
CaTS technology is addressable which enables multiple system installations in a given well for multi-zone monitoring.
CaTS uses the metallic structure of the well as a conduit along which to transmit the electromagnetic signals.
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CaTS Technology Fundamentals
• This technology is based on Electro-magnetic (EM) through tubing / casing communications
• Uses standard completion hardware - No packer or plug penetrations required
• Does not require a tubing string in the well to communicate along
• Zero signal attenuation due to cemented pipe, cement or bridge plugs
• Works in flowing or shut-in wells and is independent of well fluid type
• Flexible deployment options Wireline / coiled tubing Externally mounted / casing conveyed Full bore mandrel for conveyance with a lower completion
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CaTS Technology Retrofit Installation Overview
Gauge is conveyed into the well on wireline / coiled tubing, or with the completion Set in a nipple profile or below a bridge plug Pressure / temperature data is encoded and transmitted up the completion via an Electromagnetic (EM) signal Signal is collected at surface using a topside receiver, decoded and stored locally, or transmitted onwards Signals can also be transmitted from topside-down to control downhole valves or to trigger the actuation of completion components
Reducing Reservoir Uncertainty During Exploration, Appraisal &
Development
CaTS Advanced Reservoir TestingTM
Applications
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E&A well testing is primarily about gathering data:- • Fluids - gas or oil, PVT properties, surface processing requirements and issues, pipeline design etc.
• Flow rates and how this relates to the permeability of the reservoir
• Flow rates and how this relates to the completion efficiency – skin, length and conductivity
• Reservoir Continuity – what is the drainage area, are there any nearby boundaries, is the reservoir compartmentalised? Reducing uncertainty in these areas is the key objective of ART
Why are Well Tests performed during E&A ?
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WHAT? - The conversion of “To be Abandoned” subsea appraisal wells, zones or pilot holes into long term reservoir monitoring assets WHY? - To reduce uncertainties regarding reservoir boundaries, connectivity / compartmentalisation
DELIVERS? - High value data at low incremental cost to steer the field development plans and validate reserves forecasts ART has applications from E&A through Development
CaTS Advanced Reservoir Testing (ART)
Advanced Reservoir Testing
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CaTS Abandoned Subsea Well Monitoring System
Key system components comprise:-
CaTS Gauge
Signal Pick-up
Connection
Subsea Receiver and Remote Reference
Topside Data Retrieval unit with Dunking Sonde
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1-11/16” CaTS Gauge
• Thru-tubing gauge • Modular design • Lithium Battery powered • ~28ft long • 1 11/16” OD • Quartz crystal pressure sensor
Excellent long term stability High accuracy & resolution
• Corrosion resistant alloy • Full metal-metal primary sealing • Additional battery sections can be added • On board memory capacity (100,000 data
sets) • CaTS Relay Station means no limit to
achievable transmission range
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ARTTM
Expro can adapt the CaTS subsea receiver funnel receptacle for deployment on any 3rd party vendor’s debris cap
Debris Cap Deployed CaTS Subsea Receiver
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Debris Cap Deployed Subsea Receiver
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CaTS Equipment – Data Upload
Portable Command System (PCS) Dunking Transceiver
Dunking Cable (70m) Data Recovery
• Data from the seabed receiver is uploaded using the surface transceiver system, shown opposite
• The transceiver is connected to the PCS via the dunking and deck cables
• On the MODU, the transceiver can be deployed through the moonpool or over the side or the rig
• A support or supply vessel is normally used for routine data uploads
• The transceiver is deployed on a winch or crane line approx 10m below the surface
• P, T, date and time are decoded by the PCS and presented in Excel
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Advanced Reservoir Testing- A Case History
CaTS Wireless Communications for ART
Clair Field and 206/8-13y (T) well location (Ref. SPE 108435)
T well withCaTS gauge
8km
Structure map attop reservoir
Phase 1 Area
Clair Ridge
T well withCaTS gauge
8km
Structure map attop reservoir
Phase 1 Area
Clair Ridge
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Tool Schematic and Lower Completion (Ref. SPE 108435)
404.45” (32.75’) to 413.85 (34.48’) excluding bottom bull nose (additional 6”)
1-1/16” - 10 UN PIN Top of toolstring
Max OD of gauge = 2.5”
Weight = upto 275lbs (125 kg)
Top centraliser
Bottom centraliser
1-1/16” 10 UN Box
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Wireless Reservoir Monitoring of Permanently Abandoned Subsea Appraisal Wells (Ref. SPE 108435)
• Gauge installed through-tubing at the end of the DST - No repeater stations required
• Cement and bridge plugs set in accordance with UKOOA Cat 1 requirements
• No further well intervention required
• Only remaining abandonment liability is severance and recovery of the well head and recovery of the seabed logger - A DSV operation – no semi-sub intervention required
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206/8-13Y bottom hole pressureCum Voidage Clair A
13Z MDT pressure corrected to 13Y DST datum
13Y MDT pressure corrected to DST datum
13Y DST P initial pressure
CaTS pressure corrected to 13Y DST datum
A08Z WI came on lineA04 WI came on line
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Feb-06 Apr-06 Jun-06 Aug-06 Oct-06 Dec-06 Feb-07 Apr-07 Jun-07 Aug-07
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Cum
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206/8-13Y bottom hole pressureCum Voidage Clair A
13Z MDT pressure corrected to 13Y DST datum
13Y MDT pressure corrected to DST datum
13Y DST P initial pressure
CaTS pressure corrected to 13Y DST datum
A08Z WI came on lineA04 WI came on line
Wireless Reservoir Monitoring of Permanently Abandoned Subsea Appraisal Wells (Ref. SPE 108435)
Conclusions
• CaTS is being applied throughout the well life cycle from E&A, through development, production and even post-final abandonment.
• Where existing wells have no permanent monitoring installed, then the retrofit capability of CaTS enables field-wide, real time reservoir monitoring of mature fields to become a reality
• The highest value reservoir information often comes from places in the wellbore where cables cannot be used - CaTS provides a solution to gather this data
• CaTS can be used to control downhole devices, opening the door to the delivery of both retrofit and completion based Smart Well Wireless Solutions
• CaTS new technology is contributing to Safety Enhancement and Value Realization throughout the well lifecycle Reduced frequency of well interventions means less wire in the well Real time data to desk allows for effective reservoir management An improved reservoir understanding enables optimal exploitation of reserves Verification of pressure barrier sealing provides assurance of abandonment
integrity
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Thank you for your attention
Any Questions?
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