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

©Copyright Expro 2013 WELL FLOW MANAGEMENTTM

4

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



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.


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


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


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 ?


Copyright Expro 2013 WELL FLOW MANAGEMENTTM

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

®Copyright Expro 2010 WELL FLOW MANAGEMENT

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


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


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


Debris Cap Deployed Subsea Receiver


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



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


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



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


XX00

XX10

XX20

XX30

XX40

XX50

XX60

Feb-06 Apr-06 Jun-06 Aug-06 Oct-06 Dec-06 Feb-07 Apr-07 Jun-07 Aug-07

Pres

sure

(ps

ia)

4

6

8

10

12

14

16

18

20

Cum

ulat

ive

Void

age

defic

it at

Cla

ir A

(mill

ion

bbls

)

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

XX00

XX10

XX20

XX30

XX40

XX50

XX60

Feb-06 Apr-06 Jun-06 Aug-06 Oct-06 Dec-06 Feb-07 Apr-07 Jun-07 Aug-07

Pres

sure

(ps

ia)

4

6

8

10

12

14

16

18

20

Cum

ulat

ive

Void

age

defic

it at

Cla

ir A

(mill

ion

bbls

)

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


Thank you for your attention

Any Questions?


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