WIRELINE DCN: W17R007.
A1
SEGMENTED
BOND TOOL (SBT)
WELL INTEGRIT Y
EVALUATION SERVICE
Confirm hydraulic isolation and avoid remedial work by evaluating cement bond integrity.
The Baker Hughes Segmented Bond Tool (SBT™) well integrity
evaluation service quantitatively measures the cement bond
integrity in six angular segments around the casing, delivering the
information needed to confirm hydraulic isolation and determining
whether remedial work is required before any completions are
attempted. The SBT service operates at the ultrasonic frequency
range, and quantitatively measures the cement bond integrity
in six angular segments around the casing to ensure a strong
hydraulic seal in these locations, thus improving productivity and
well life span. The service can find and define channels in the
cement annulus, enabling the operator to determine next steps.
Conversely, the SBT service can reliably find zones of uniform
bonding within a few feet of casing. Under conditions where
a short-bonded interval produces an adequate hydraulic seal,
squeeze jobs can be avoided.
The SBT service offers significant operating advantages over
conventional and pulse-echo tools due to its insensitivity to
heavy or gas-cut borehole fluids, dense muds, emulsions, fast
formations, temperature and pressure variations, and moderate
tool eccentering. The service can evaluate cement in heavyweight
casings up to 1-in. thick.
The field deliverable is a real-time, non-processed log that is not dependent on
For ease of interpretation, SBT measurements are displayed in two the logging engineer’s input.
log presentations. Both presentations are available in the logging
mode, as the SBT data are acquired, processed, and plotted in
real time. The secondary presentation consists of six continuous behind casing sizes larger than 133/8 in., which is unique in the
segmented arrays, a variable-attenuation cement map, and a tool- industry. Combined with the benefit of this wide casing thickness
orientation trace overlay—a field deliverable that does not require range of the SBT service (up to 1-in. thickness), the SBT Beyond
engineer interaction. It also provides a 5-ft-spaced variable-density service addresses challenges in segments where pulse-echo
log measurement, used to qualitatively understand the bonding devices cannot perform.
between cement and the formation. For more information on how the SBT service can help you
The SBT™ Beyond service enables the SBT service to extend determine if remedial work is required before completions are
the maximum casing size from 16 in. to 24 in., thus offering a tool attempted, contact your Baker Hughes representative today or
covering the widest casing size range in the cement evaluation visit bakerhughes.com/SBT.
segment. The SBT Beyond service is capable of evaluating cement
WIRELINE COMPLETIONS M U LT I - S TA G E LINERS
WIRELINE DCN: W17R007.A1
SEGMENTED BOND
TOOL (SBT)
WELL INTEGRIT Y EVALUATION SERVICE
FEATURES & BENEFITS
Pad-mounted
• Identifies intervals of uniform bonding and detects cement
channels or voids Strong
casing
• Identifies channeling and poor cement bond sections to Near arrivals
free-pipe
reduce risk response
• Reduces analysis time, using a 360° easy-to-interpret
cement map Formation
arrivals
• Provides accurate measurement in any type of formation Top of
cement
condition, up to 1-in.-thick casing
• Provides accurate measurement, even in fast formations,
heavy mud, and thick wall casing No casing
~11 dB/ft =
~ 1,500 psi arrivals
• Evaluates multiple-size casing strings in one logging pass
Insensitive to moderate eccentering
• Enables deployment in the most challenging scenarios
Fully compensated measurement
• Unaffected by varying wellbore fluid conditions, pressure, SBT Beyond service log of casing with 20-in. outside diameter
and temperature (OD) and 0.984-in. wall thickness
Casing range from 4.5 to 24 in.
• Provides the widest casing range coverage in the industry
APPLICATIONS
Provides quantitative analysis of cement bond to the casing
around the borehole
Provides qualitative analysis of cement bond with the formation
13 dB/ft
Length 32.1 ft. indicating
>3,000 psi
Diameter 3.38 in. cement
Pressure rating 20,000 psi
Temperature 350°F 177°C
Weight 481 lb.
Min. casing size 4.5 in.
Max. casing size 24 in.
Measurement range 0–25 dB/ft
Radial resolution 360° coverage
Indication
Vertical resolution 3 in. 76.2 mm of
channeling
SBT Beyond service log of casing with 24-in. outside diameter
(OD) and 0.75-in. wall thickness
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