Diagnosing Well Integrity, An Industry Challenge
Transcript of Diagnosing Well Integrity, An Industry Challenge
© 2017 Halliburton. All rights reserved.
Diagnosing Well Integrity, An Industry
Challenge
David Lavery
Technical Sales Advisor
Wireline and Perforating
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Corrosion Management Impact
Operations Unit A
Operations Unit B
Aggressive
Corrosion monitoring
Corrosion mitigation
Planning
Minimum
Corrosion monitoring
Corrosion mitigation
Planning
3 200+
Spills/leaks due to corrosion
FIELD XYZ
SPE 168065 NACE 04441
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Monitoring
Inspection Planning
Intervention Planning
FINDING ISSUES
BEFORE THEY GET BIG
& EXPENSIVE
Diagnosing Well Integrity – An Industry Challenge
Top 3 Integrity Issues
Shallow Flow
Mechanical Leaks
Corrosion Leaks
Diagnostic Challenges
Location
Full Description
WHEN
INTEGRITY
FAILS
Metal loss based on
actual EPX™
V results
LOG
Corrosion Rate
FAILURE PROBABLE
TIME
Me
tal T
hic
kn
ess
% M
eta
l R
em
ain
ing
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Well Integrity on Mature Assets
Types of Integrity Issues
Internal:
Corrosion
• Electromechanical
• Chemical (organic, acetic acids, …)
• Stress
Damage
• Erosion
• Wear
Which cause pitting, general corrosion,
and cracks.
External:
Corrosion
• Electromechanical
• Electrochemical
• Chemical
• Bacterial
• Stress
Damage
• Stress
• Erosion
• Mechanical
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Well Integrity Monitoring Challenge
Growing number of aging wells
Industry emphasis well integrity monitoring
Most services only cover first tubular barrier
May provide internal diameter and thickness measurements
Unsatisfactory for evaluation of outer barriers
Current Limitations
Outer barriers shielded by the inner ones
Signal penetration and measurement in concentric barriers is
required
WHAT ABOUT
OUTER CASING??
ULTRASONIC
INTERNAL
CALIPER
MECHANICAL
CALIPER
ULTRASONIC
THICKNESS
MAGNETIC
THICKNESS
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Phased Corrosion Detection Tools
High frequencies employed for innermost pipe inspections
Low frequencies employed for outermost pipe inspections
sine wave
core
Pipe wall
Magnetic field
TX coil
RX coil
eddy currents
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Corrosion Inspection Tool: Configuration and Measurements
Traditional frequency-domain tools operate in
the remote-field EC regime; only sensitive to
the total metal thickness.
The corrosion inspection tool measures the EM
field in the three zones; from this complete
information and by using an inversion method,
the thickness of each individual pipe is
obtained.
Transmitter emits continuous wave at multiple
frequencies
Max eight freq. for primary array
Max eight freq. for high-resolution array
Receivers record complex-valued
measurements (amplitude and phase).
SPE-188932-MS • New High-Definition Frequency Tool for Tubing and Multiple Casing Corrosion Detection • Ahmed Fouda
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Specifications Electromagnetic Pipe Xaminer® V (EPXTM V) Performance Specifications
Benefits HDF (High-Definition Frequency) technology
provides accurate results
1 to 5 concentric pipes
One-trip diagnostics, reduces operating costs
Diagnose metal loss for each pipe
Tool OD 1-11/16 in. (42.86 mm)
15,000 psi, 350°F
Running Combinable
Continuous
SRO
Memory
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Full-Resolution Array Optimization for Overlapping Defects
Overlapping defects in pipes 4 and 5
blue: actual
red: inverted
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Corrections – Example 1 Red: before ecc correction.
Black: after ecc correction.
Pipe Eccentering Corrections
Inner pipe automatic
External pipes
Identified
Corrected
Collar Correction Included
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Field Log
VDL shows collars
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A
C
B
A, B, and C reference points for depth matching.
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7” pipe– logged when exposed, over 6 yrs ago.
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Collar effect in
3rd string
removed
when
compared
with original
log.
EPX V
MFC and
EPXV appear
to be a few
feet off
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Analysis Report
General well information
Summary of well integrity condition
Overall condition of each tubular
Analysis profile of well
Charts for further analysis
Detailed joint-by-joint analysis record for each string
3D view of points of interest