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Well Integrity and Control

Presented by: Martin Geddes

Offshore Completion Systems Meeting the Reservoir Needs

©2013 Weatherford International Ltd. All rights reserved. Incorporates proprietary and patented technology.

We start our Completions from the reservoir up.

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Convention #27

Some Completion teams can only

operate down to the reservoir level.


To implement tailored Completions that…

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Our philosophy:

©2013 Weatherford International Ltd. All rights reserved. Incorporates proprietary and patented technology. 5 ©2013 Weatherford International Ltd. All rights reserved. Incorporates proprietary and patented technology.

Maximise your return.


Reduce Your risk.


Meet the life of field needs of your asset.


We do this by…

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Targeting multiple zones per well to minimise drilling and completion costs.


Reliable Open Hole Zonal Isolation

Proven Open Hole Sealing Capability

Less than 180psi radial stress exerted on the borehole

Capable of supporting high axial loads.

Operate up to 150oC Bottom Hole temperature

Proven sealing capability at minimum and maximum

temperature and over multiple temperature swings in

excess of 100oC

Capable of operating in low and high temperature

swing conditions.

Set without washpipe

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Compression/Propped Packer High Stress Loading on the Rock Face

Cup Seal Element is shown to induce very low stress on the Rock Face

Conventional Set Packer vs. Weatherford Cup Packer


Assisting with selection of the most appropriate sand control technique for your application.


Technical Centre of Excellence

Petroleum and Reservoir Engineering

Sand Control Expertise

Rock Mechanics

Lab testing and Research

Materials Engineering

Pre and post-job analysis for improved performance

In-flow performance modelling – initial set-up based on reservoir model, updated in field from reservoir characteristics as drilled

Laboratory Studies & Capabilities

©2013 Weatherford International Ltd. All rights reserved. Incorporates proprietary and patented technology. 14

10 Steps Sand Control Selection Process


Due-Diligence Engineering – Step 1


Due-Diligence Engineering – Step 2 to 10


Providing technology which can autonomously manage water production throughout well life.


Functions as Passive ICD during oil production

Delays water or gas breakthrough

Balances inflow profile in long horizontal wells

Additional restriction unwanted water or gas production

at breakthrough when compared to Passive ICD

Increases ultimate recovery

Extends well life

No intervention or connection to surface required

Each unit functions independently joint-to-joint

Technology licensed to Weatherford

A number of wells completed to date

Autonomous ICD (RCP Valve)


Principle of operation

Functions per Bernoulli principle

One moving part – disk

Free floating disk rests during oil production allowing maximum flow area

As Water-Oil or Gas-Oil Mobility Ratio increases high mobility fluid velocity increases

Pressure is lower at the flowing side of the disc due to the large velocity of high mobility fluid

Higher pressure behind the disc will lift it towards its seat

Upward movement of the disk restricts the flow of high mobility fluid (water or gas)

Reference papers

SPE-146737 & SPE-159634

Autonomous ICD (RCP Valve) - Concept

Standard ICD/AICD

Oil production

Standard ICD

Gas production

AICD

Gas or Water production


Passive ICD Autonomous ICD

Homogeneous reservoirs

Preset to delay coning at the heel

Improved mud clean-up at the toe

Heterogeneous reservoirs

Preset to delay coning at high permeable zones

Improved mud clean-up across low permeable zones

Heavy oil reservoirs

Provides limited restriction to flow of high mobility fluids

Homogeneous reservoirs

RCP Valve further restricts high mobility fluid flow to favour oil production

Heterogeneous reservoirs

RCP Valve will further restrict high mobility fluid flow to favour oil production.

RCP Valve provides best solution in wells with high reservoir uncertainty

Heavy oil reservoirs

Provides active restriction to flow of high mobility fluids

Additional

Benefits

Additional

Benefits

Additional

Benefits

Autonomous ICD (RCP Valve) – Well Applications


We have the solutions and capabilities to deliver.

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Each reservoir brings Its own challenges.


We strive to understand what is best for your reservoir.


Ensuring you find

a system with

Well Integrity

and Control built in.

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Questions?

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