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Technical Data S ummary
6¾-in. AutoTrak eXact High-build Rate RSS
Improving well placement in complex environments
The Baker Hughes AutoTrak™ eXact drilling
system expands our service portfolio by
offering high build-up rates (BUR) with
advanced formation evaluation
measurements. Another step forward derived
from nearly two decades of experience in
rotary steerable system (RSS) development
and operation around the globe.
To maximize horizontal reservoir exposure
and avoid directional work in troublesome
formations, the service is capable of drilling
curves up to 12°/100 ft, straight tangent and
horizontal sections, or other complex
directional profiles with superior hole quality
and consistent performance, reducing overall
time on well and improving the efficiency of
completion operations.
The design of the AutoTrak eXact RSS is
based on our proven AutoTrak technology, the
industry's most advanced, accurate and
reliable RSS. The AutoTrak eXact service
takes this technology to the next level,
combining higher build rates, and compatibility
with the latest Baker Hughes measurement
while drilling (MWD) and logging while drilling
(LWD) services. This enables operators to
obtain accurate and comprehensive formation
evaluation and reservoir data and place the
well exactly where it needs to be. Baker
Hughes has designed the bottom-hole
assembly (BHA) with optimized Talon™ PDC
and Kymera™ Hybrid drill bits to work as a
system, ensuring operational efficiency,
reliability and consistency.
Real-time, near bit directional and vibration
measurements, inclination, rotating azimuth,
deep azimuthal resistivity, azimuthal gamma,
downhole pressure and multiple propagation
resistivity data is gathered to assure accurate
formation evaluation while drilling for optimum
wellbore placement, with maximum certainty.
Features
Benefits
High BUR capability
Maximizes reservoir exposure
Reduces overall time on well
Avoids directional work in troublesome
formations
Advanced formation evaluation package
Precise reservoir navigation
Exact wellbore placement
Early detection of bed boundaries
Geo-confirmation of sedimentary structures
Continuous drill string rotation from surface
Increases drilling performance and greater
horizontal reach with minimum risk and
nonproductive time
Precise closed loop steering with continuous,
smooth adjustment of steer direction and
advanced inclination hold mode
Offers a smooth wellpath and excellent hole
quality for faster completions and enhanced
production
Annular flow on/off pressure
Identifies hole cleaning problems and fluid
influx into the wellbore
Rugged design with near bit drilling dynamics
measurement
Optimizes drilling performance and reliability
6¾ AutoTrak eXact
©2014-2014 Baker Hughes Incorporated. All rights reserved.
ATK4-70-01-001 Rev. B
Technical Data S ummary
6¾-in. AutoTrak eXact High-build Rate RSS
Improving well placement in complex environments
General Tool Specifications
Tool size
Borehole size
Maximum build rate
Steerable stabilizer
Module length / weight
Length of steering sleeve
Flex Sub module length / weight
AziTrak length / weight
BCPM length / weight
Mod Flex Stab module length / weight
Stop sub module length / weight
Top connection
Bottom connection
8⅜-in. to 8¾-in. hole size
9½-in. to 10⅝-in. hole size
Operating Specifications and Limits
US Units
SI Units
6¾ in.
171.45 mm
8⅜ to 10⅝ in.
212.8 to 269.6 mm
12°/100 ft
12°/30 m
7916 in.
192.09 mm
37.8 ft / 1,173 lb
3.19 m / 532 kg
3.35 ft
1.02 m
6.9 ft / 550 lb
2.11 m / 250 kg
22.0 ft / 2,866 lb
6.72 m / 1,300 kg
10.5 ft / 2,976 lb
3.20 m / 1,350 kg
8.2 ft / 640 lb
2.50 m / 290 kg
2.6 ft / 287 lb
0.80 m / 130 kg
NC50
4½-in API Reg. box
6⅝-in. API Reg. box
US Units
SI Units
Flow rate
Extreme Low Flow
Low Flow
Medium Flow
Normal Flow
High Flow
gpm
lpm
200 (240)–325
757 (908)–1,230
265 (320)–450
1,000 (1,211)–1,703
330 (395)–570
1,249 (1,495)–2,157
375 (450)–660
1,419 (1,703)–2,498
500 (600)–900
1,893 (2,271)–3,407
() minimum flow rate for downlink operation
Maximum WOB
56,200 lb
250 kN
Maximum drilling torque (at bit)
15,500 ft-lb
21 kNm
Maximum torque to failure (at bit)
23,500 ft-lb
32 kNm
Maximum overpull to failure
697,000 lb
3,100 kN
Maximum DLS for tool passage
Rotating
13°/100 ft
13°/30 m
Sliding
20°/100 ft
20°/30 m
Maximum tool rotation
400 rpm
Maximum rpm variation
Maximum operating temperature
Maximum hydrostatic pressure
Maximum sand content
Maximum LCM
Maximum axial and lateral vibration
Sensor Specifications
Near Bit Inclination
Sensor type
Range
Accuracy
Bit-offset
Drilling Dynamics
Measurements
Sensor type
Acceleration range
Frequency range
RPM range
Drilling Services
2001 Rankin Road
Houston, Texas 77073
Phone: +1 713-625-4200
www.bakerhughes.com
Sensor Specifications - AziTrak
Measure point from Bottom of Tool
Resistivity
Pressure
Gamma
Directional
Azimuthal Gamma Ray
Range
Accuracy
Vertical resolution
2 MHz Resistivity
Range
Accuracy
Vertical resolution
400 kHz Resistivity
Range
Accuracy
Vertical resolution
Deep azimuthal propagation resistivity
Pressure (annular and flow off)
Range
Accuracy
Resolution
Directional sensor type
±50 maximum deviation from mean rpm (e.g.
100 rpm: rpm range = 50 rpm - 100 rpm), limited
by the maximum tool rotation specification
302°F
150°C
25,000 psi
1,725 bar
1% maximum volume, according to
API 13B (<0.5% recommended)
40 ppb (114 kg/m³) medium nut plug, cedar fiber
(any pumping of LCM must be carried out
according to AutoTrak eXact operations manual)
Refer to Supplemental Technical Specification
(TDS-20-60-0000-00)
US Units
SI Units
Tri-axial accelerometer
0°–180°
0°–30° ±1.0°
30°–90° ±0.3°
5.9 ft
1.8 m
Axial vibration, lateral vibration, tangential
acceleration, downhole rpm, stick slip
4-axis accelerometer, 2-axis
magnetometer
0–50 g-RMS
0–460 Hz
-200 rpm to 1,000 rpm
Inclination
Azimuth2,3
Range
0°–180°
0°–360°
Resolution
0.09°
0.35°
Accuracy1
±0.1°
±1.0°
Range
0°–180°
0°–360°
Vibration
Sensor type
Axial Vibration
Lateral Vibration
Acceleration range / frequency range
Real-time log options
Post run / memory log options
Rotation and stick-slip
Sensor type
Rotation speed
Real-time log options
Post run / memory log options
1
3
US Units
SI Units
22.4 ft
25.9 ft
29.0 ft
32.9 ft
6.84 m
7.89 m
8.84 m
10.03 m
0–500 API
±2.5 API @ 100 API and
ROP = 60 ft/hr (18.3 m/hr)
6 in. (15.24 cm)
Phase Difference
Attenuation
0.1–3,000 ohm-m
0.1–500 ohm-m
±0.85%
±0.85%
(0.1–50 ohm-m)
(0.1–25 ohm-m)
±0.4 mS/m
±0.85 mS/m
(>50 ohm-m)
(>25 ohm-m)
8 in. (20 cm) for 90% response in
conductive beds
Phase Difference
Attenuation
0.1–1,000 ohm-m
0.1–200 ohm-m
±0.85%
±4.0%
(0.1–25 ohm-m)
(0.1–10 ohm-m)
±0.8 mS/m
±4.0 mS/m
(>25 ohm-m)
(>10 ohm-m)
12 in. (30 cm) for 90% response in
conductive beds
Detection of boundary: Up to 17 ft (5.2 m)
0–30,000 psi
0–2,070 bar
±0.25% of full scale
5 psi
0.35 bar
Tri-axial accelerometer and flux gate
Magnetic2
Toolface &
Gravity3
Toolface
0°–360°
1.4°
±1.5°
0°–360°
Total Magnetic
Field
Dip Angle2
0–100,000 nT -90° – +90°
35
0.04°
±100
±0.2°
0–100,000 nT -90° – +90°
One Accelerometer, z direction
Two Accelerometer, x-y direction
0 – ±15 g / 0 – 82 Hz
Lateral and Axial vibration; transmitted as
severity level (scaled to g-RMS)
Min., max., average and max. lateral and
axial vibration in g-RMS and as severity
level
Two Axis Magnetometer
0 – ±1,000 rpm (±1% Accuracy)
Downhole rpm, stick-slip transmitted as
severity level
Min., max., average rpm, stick-slip and
backward rotation severity
All Sensor accuracies are 2 Sigma confidence 2 For a typical magnetic field value at 30° latitude
Accuracy applies to inclinations greater than 5.0°
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.
ATK4-70-01-001