6 weaterhford optimized steam control final m12 2012

© 2010 Weatherford. All rights reserved.

PTAC Optimized Steam Control

Scott Hobbs / Peter Ficocelli March 12 2012

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© 2010 Weatherford. All rights reserved. 2

Disclaimer

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• The items, advice, recommendation or opinions delivered hereunder are delivered for informational purposes only and client acknowledges it is accepting all "as is". Client further agrees to not disclose except as expressly permitted by Weatherford.

• Weatherford makes no representation or warranty, express or implied, of any kind or description in respect thereto, including, but not limited to the warranties of merchantability and/or fitness for a particular purpose, and such is delivered hereunder with the explicit understanding and agreement that any action client may take based thereon shall be at its own risk and responsibility. Client shall have no claim against Weatherford as a consequence thereof. The foregoing disclaimer of warranties and representations shall apply to any entity receiving by, under or through client and client shall indemnify Weatherford for any claims arising from any entity so receiving from client.


Agenda

• LxDATA Systems FBG Technology

• LxDATA System Architecture - PTAC TIS

• LxDATA System OPT - PTAC TIS II

• Real-Time Thermal Profile & Pressure

• Thermal ICD / Inflow Control Device

• Steam Splitters & GDA’s

• Modeling Steam Distribution & Inflow Control

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LxDATA System FBG Technology

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• Write-On™ FBG Array Process

• High proof strength & reliability• High reflectivity / power budget• High temperature coatings• Lowest loss Hydrogen tolerant

fiber

Product lifetime results from fully automated FBG laser writing process in clean room environment

FBG Write sensors


LxDATA System FBG Technology

• Reliable proven sensor technology• Works in SAGD • Immune to EMI & Vibration

• Large Power /Frequency Encoded• Reduce Hydrogen effect

• High accuracy & precision• Temperature = 10X10-12 per °C• Pressure = 1X10-12 per PSI • Use during conditioning period

Insensitive to power changes Operates effectively in SAGD hydrogen environment


Surface Fiber CableMCC

OTC /OPT sensing region

LxIQ™

OPT – Optical Pressure Temperature

ESP

LxIQ™ OTC / OPT

Coil Tube deployed Strap on to ESP Capillary inserted

LxIQ™ Downhole cable

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• Common downhole technology − Injector, Producer, Observation & ESP for Temperature & Pressure

• Common DAU simplified data analysis and automation− Server architecture with simple SCADA / DCS/ Historian interfaces

• Common surface cabling − Multiplexed distribution with greater than 5Km range

LxDATA System Common Architecture


LxDATA System Capillary

• LxDATA Systems FBG Sensors• OTC distributed temperature• OPT single pressure & temperature• OTC distributed temp with OPT at tip

• Capillary (1/4 inch 6.35 mm)• SS316, alloy 825, alloy 625

• Capillary integrity tests– Torsion test mechanical & gas hermetic test – Tip hermetic testing

• Insert gas and test for leak when under torsion test

– X-rays 7

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LxDATA System OTC string

• Downhole sensing string– OTC configuration with 10, 20 or 40 thermal sensors – Custom sensors & spacing or equalized spacing – Real time accurate and precise temperature monitoring – No calibration of downhole or surface fiber– Re-useable / deployable string – Survives shut-ins / Thermal expansion

1. Sensing String

2. Surface Cable System3. MCC Cabinet

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LxDATA System Fiber Optic Pressure Gauge

• Corrosion resistant Inconel 718/625

• Maintains ¼ inch OD of capillary

• Temperature range to 280° C

• Pressure range 1,200 psi (8,500 kPa)

• Feld-proven FBG technology

• Multiple FBG enhances sensitivity &

resolution

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Data Acquisition & Processing

• Real time monitoring & GUI

• Three-month Data Storage

• Remote configurations & soft updates

• Broadband DWDM Laser & multiplexor

• Web-enabled access

Surface cable

• No recalibrations required for accuracy

• Multiplexed distribution & 5 Km range

MCC 19” Equipment RackUL/CSA Listed

LxIQ™ DAU simplified interface to DCS / Historian via TCP/IP, Ethernet, SCADA / MODBUS


Reservoir Management with Real Time Alarms

Our customers employ continuous temperature profile and pressure readings to control processes and enhance efficiencies

• Steam start up from heel to toe• Shut-in communications / producing zones • Thermal profile Injector / Producer • Pump fluid levels to maximize rate


Optimize Circulation

Steam start up and Shut-In for communications

Use of data to safely optimize temperature and pressure


Pump Management • Temperature profiles and intake pressure during production

– Bitumen / Liquid level

– Motor temperature, pump discharge pressure , intake pressure Bitumen level temperature Sensors

Temperature profile

Toe Pressure + Toe Temperature

ESP

Pump Intake pressure


Optimize production rate

ESP Bitumen level to safely optimize production

Use of data to safely optimize temperature and pressure


LxDATA OTC Multipoint Temperature String Scale = 6 hours from 120oC to 240oCMovement of puff along horizontalEnergy dissipation as moves from heel to toeCalculate velocity & amount of energy dissipated

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Optimized Steam Control

THERMAL ICD

(Injection/Inflow Control Devices)

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• Benefits

– Steam Management - chamber growth, faster recovery

– Reduced CSOR (Cumulative Steam Oil Ratio)

– Inflow Control Management – decrease ∆P drops

– Simpler completions

– Extended well-bores

– Increased ESP run-life

– Surface pressure constraints

Thermal Injection / Inflow Control Devices


Thermal ICD Background

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Source: Weatherford

Source: Weatherford


Steam Splitter – Standard Design

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Steam Splitter – How does it work?

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GDA SuperShiftable™ Design

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• Based on standard SteamSplitter design

• Increased capabilities

– Designed for multiple device deployment

– Reduces intervention significantly


Modeling – Steam Distribution

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Modeling – Steam Distribution

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Modeling – Inflow Control

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Steam Rate flowing into segment, m3/d CWE

Fluid Rate, m3/d


Design Considerations & QA-QC

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Thank you

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6 weaterhford optimized steam control final m12 2012

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