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Technical Data S ummary
AutoTrak Curve High Build Rate Rotary Steerable System
Reliable Drilling Performance in Rugged Environments
The Baker Hughes AutoTrak Curve™ highbuild rate rotary steerable system expands our
unrivalled expertise of more than a decade of
rotary steerable system (RSS) development
and operation around the globe.
The design is based on the proven AutoTrak
steering principle, the industry's most accurate
and reliable RSS. AutoTrak Curve takes this
technology to the next level with a unique, allnew system solution of Bottom Hole Assembly
(BHA) and drill bit, optimized for development
drilling operations.
To maximize horizontal reservoir exposure in
small leases, it is capable of drilling curves up
to 15°/100 ft, straight horizontal sections, or
other directional profiles in one fast run. It
enables precise directional drilling with
continuous drillstring rotation from the surface
and allows change of direction on the fly,
without interruption to the drilling process.
Real-time near-bit inclination and azimuthal
Gamma ray measurements assure optimum
wellbore placement, with maximum certainty.
Besides faster drilling and better wellbore
placement, the superior hole quality delivered
by the AutoTrak Curve System reduces the
overall time on well by improving the efficiency
of completion and fracturing operations.
Knowing that drilling environments are often
rough, the system’s rugged design provides
the ability to operate with high LCM
concentrations.
Combining the Baker Hughes superior
technology with our application engineers'
intimate knowledge of specific application
requirements in your environment, the
AutoTrak Curve system adds value to all
stages of your drilling project.
Features
Benefits
Continuous drill string rotation from surface—
no slide drilling
Increased drilling performance and greater
horizontal reach
High buildup rate capability
Maximizes reservoir exposure in small leases
Rugged design for challenging environments
Tolerates high LCM content
Reduce risk at rigsite
BHA arrives in one piece ready to drill
Fast and efficient
Drill curve and lateral sections in one run,
minimizing trip time
Continuously adjusted steering vector
Smooth wellpath and excellent hole quality for
faster completions and enhanced production
Integrated azimuthal gamma ray
Critical information for reservoir navigation at
short distance-to-bit
Survey-while-connection-capability
Minimize flat time throughout the drilling
process
AutoTrak Curve High Build Rate RSS
©2012-2014 Baker Hughes Incorporated. All rights reserved.
ATC-70-01-001 Rev. D
Technical Data S ummary
AutoTrak Curve High Build Rate Rotary Steerable System
Reliable Drilling Performance in Rugged Environments
General Tool Specifications
Tool size
Borehole size
Maximum build rate
Maximum collar OD
Steerable stabilizer
BHA length — typically
BHA weight — typically
Length of steering sleeve
Primary power source
Top connection
Bottom connection
8⅜-in. to 8¾-in. hole size
9½-in. to 9⅞-in. hole size
Operating Specifications and Limits
Flow Range
Maximum WOB
Maximum drilling torque (at Bit)
Maximum torque to failure (at Bit)
Maximum overpull to failure
Maximum pass-through dogleg
Rotating
Sliding
Maximum tool rotation
Maximum rpm variation
Maximum operating temperature
Maximum hydrostatic pressure
Pressure drop across bit
Maximum sand content
Maximum LCM
Maximum axial and lateral vibration
Sensor Specifications
Near bit inclination
Sensor type
Range
Accuracy
Azimuthal gamma ray
Sensor type
Range
Accuracy
Azimuthal measurement
Vertical resolution
Drilling & Evaluation
2001 Rankin Road
Houston, Texas 77073
Phone: +1 713-625-4200
www.bakerhughes.com
US Units
SI Units
6¾ in.
171.45 mm
8⅜ in. to 9⅞ in.
212.8 to 250.8 mm
15°/100 ft
15°/30 m
7 in.
178.00 mm
79/16 in.
192.09 mm
37.8 ft
11.5 m
3,090 lb
1,400 kg
3.35 ft
1.02 m
Drilling fluid driven alternator
NC 50 Box
4½-in. API Reg. Box
6⅝-in API Reg. Box
US Units
SI Units
300–750 gpm
56,200 lb
15,500 ft-lb
23,500 ft-lb
764,000 lb
1,135–2,840 lpm
250 kN
21 kNm
32 kNm
3,400 kN
15°/100 ft
30°/100 ft
15°/30 m
30°/30 m
Sensor Specifications (continuation)
Directional survey
Sensor type
Range
Inclination
Azimuth
Accuracy
Inclination
Azimuth
Dynamics
Measurements
Range
Vibration
RPM
US Units
SI Units
Triaxial accelerometer and magnetometer
0–180°
0–360°
±0.2°
±1.0°
Axial vibration, lateral vibration, rpm,
stick-slip severity
0–25 g-rms, DC 0–120 Hz
-200 to +1,000 rpm
250 rpm
±50% maximum deviation from mean rpm (e.g.
100 rpm: rpm Range=50-150), limited by
maximum tool rotation specification.
150°C
302°F
1,380 bar
20,000 psi
No limitation
1% max. volume, acc. to API 13B
(<0.5% recommended)
50 ppb (143 kg/m³) Medium Nut Plug, Cedar
Fiber (Any pumping of LCM must be carried out
according to AutoTrak Curve operations manual)
Refer to Supplemental Technical Specification
document TDS-20-60-0000-00.
US Units
SI Units
Tri-axial Accelerometer
0°–180°
0°–30° ±1.0°
30°–90° ±0.3°
NaI Scintillation
0–500 API
±5 API @ 100 API and 60 ft/hr
4 sectors
6 in.
153.0 mm
Although the information contained herein is believed to be accurate, no other representations are made concerning the information. Under no circumstances shall Baker Hughes be liable for any incorrect or incomplete
information. All technical specifications and commercial information concerning the product and/or services described herein may be changed at any time without further notice. Refer to Supplemental Technical Specifications
(TDS-20-60-0000-00) for further environmental specific specifications and information on the application, operation, and handling of Baker Hughes tools. Technical Data Summaries are controlled documents and can only be
released through the BHOS – Global OPS/AMO Documentation Group.
ATC-70-01-001