1. technology and computing

Technical Data Summary
AziTrak
Deep Azimuthal Resistivity
The AziTrak™ deep azimuthal resistivity
formation evaluation tool is a fully integrated
MWD/LWD suite, providing real time
directional, azimuthal gamma ray, multiple
propagation resistivity, deep azimuthal
resistivity, downhole pressure and vibration
measurements in a single sub. The tool is
designed to detect reservoir boundaries and
provide accurate formation evaluation
simultaneously while drilling for precise
wellbore placement. When utilized with
Reservoir Navigation Services, real time
distance-to-bed boundary and apparent-dip
calculations with deep azimuthal resistivity
data and gamma ray images are available for
informed decision making in meeting the
challenges present in the most demanding
applications in order to deliver optimal
wellbore placement for increasing production
in horizontal and multilateral wells.
Combined with the Baker Hughes downhole
advanced drilling systems, the AziTrak tool
delivers precise directional control, accurate
formation evaluation.
The AziTrak resistivity sensors use innovative
crossed (orthogonal) receiver coils to enhance
the azimuthal sensitivity of the measurement
for determining the direction of approaching
resistivity boundaries. This technology
expands the current limits of extended reach
drilling, formation evaluation logging and
wellbore placement.
Features
Benefits
Innovative All in One Design
Optimum directional control with close to the
bit sensor spacing in a fully integrated sub
Enhanced azimuthal resistivity sensitivity
Early detection of bed boundary and non
productive reservoir avoidance capability in
real-time
Determine the apparent dip of an approaching
bed to avoid reservoir exit and confirms
geological structure models
Azimuthal Gamma Ray
Geo confirmation of bed boundaries and
sedimentary structure
Multiple propagation resistivity
Eight compensated multi-depth resistivity
measurements
Annular flow-on/off pressure
Identification of hole cleaning problems, fluid
influx in the wellbore, avoidance of stuck pipe
Vibration dynamics and Stick-Slip monitoring
Avoidance of stuck pipe, twist offs, and
reduction in tool failures
AziTrak
©2010-2011 Baker Hughes Incorporated. All rights reserved.
AOA-70-01-001 Rev. A
Technical Data Summary
AziTrak
Deep Azimuthal Resistivity
General Tool Specifications
SI Units
Nominal Tool (OD)
Hole Size Range
Length
Weight
Connections
Integral Stabilizer Sleeve
Primary Power Source
121 mm
146 mm - 172 mm
7,16 m
950 kg
Wear Band 136 mm
Operating Specifications and Limits
Nominal Tool (OD)
Flow Rate Range
Maximum WOB
Maximum Tool Rotation
Maximum Operating Temperature
Maximum Hydrostatic Pressure
Maximum Bit Pressure Drop
Maximum DLS for Tool Passage
Maximum RPM Variation
Maximum Axial & Lateral Vibration
US Units
SI Units
4-3/4"
172 mm
5-3/4" - 6-3/4"
216 mm - 270 mm
23.5 ft
6,72 m
2,094 lbs
1300 kg
Up & Down Baker Hughes Modular Connection w/ M30
Wear Band 5.33"
213 mm
Drilling fluid driven turbine
US Units
6-3/4"
8-1/2" - 10-5/8"
22.1 ft
2,866 lbs
8-3/8"
SI Units
US Units
SI Units
US Units
121 mm
475 - 1325 lpm
1120 kN
4-3/4"
125 - 350 gpm
251 klbs
172 mm
757 - 3407 lpm
2990 kN
6-3/4"
200 - 900 gpm
672 klbs
400 RPM
302°F
150°C
302°F
1380 bar (20,000 psi) - 1725 bar (25,000 psi) and 2070 bar (30,000 psi) tools available on request
No Limitation
Based on BHA configuration.
±80% Max deviation from mean RPM, (e.g. RPM=100: RPM range = 20 - 180), limited by Max. Tool Rotation Specification, (from recorded
memory or as flagged by corresponding real-time severity level)
Refer to Supplemental Technical Specification document TDS-20-60-0000-00.
Regarding RPM, Sand Content, and LCM please refer to Technical Data Sheet of the OnTrak™ MWD platform.
150°C
Sensor Specifications
SI Units
US Units
SI Units
US Units
Nominal Tool (OD)
Measure point from Bottom of Tool
Pressure
Azimuthal Gamma Ray
MPR & APR
Directional Vibration
Gamma / Resistivity
121 mm
4-3/4"
172 mm
6-3/4"
Range
Accuracy
Vertical Resolution
Deep Azimuthal Propagation Resistivity
Pressure (Annular and Flow Off)
Directional
Range
Resolution
Accuracy1
Vibration
Acceleration Range / Frequency Range
Real-time log options
Post Run / Memory log options
Rotation & Stick-Slip
Rotation Speed
Real-time log options
Post Run / Memory log options
1
All Sensor accuracies are 2 Sigma confidence
Drilling & Evaluation
2001 Rankin Road
Houston, Texas 77073
Phone: +1 713-625-4200
www.bakerhughes.com
2,80 m
4,00 m
1,40 m
5,40 m
9.1 ft
2,60 m
8.5 ft
13.2 ft
3,55 m
11.6 ft
4.6 ft
1,55 m
5.1 ft
17.8 ft
5,01 m
16.4 ft
2 MHz Resistivity
400 kHz Resistivity
Azimuthal Gamma Ray
Phase Difference
Attenuation
Phase Difference
Attenuation
0 - 500 API
0.1 - 3000 ohm-m
0.1 - 500 ohm-m
0.1 - 1000 ohm-m
0.1 - 200 ohm-m
±0.85% (0.1 - 50 ohm-m) ±0.85% (0.1 - 25 ohm-m) ±0.85% (0.1 - 25 ohm-m) ±4.0% (0.1 - 10 ohm-m)
±2.5 API @ 100 API and
±0.4 mS/m
±0.85 mS/m
±0.8 mS/m
±4.0 mS/m
ROP = 18,3 m/hr (60 ft/hr)
(>50 ohm-m)
(>25 ohm-m)
(>25 ohm-m)
(>10 ohm-m)
15,24 cm (6")
20 cm (8") for 90 % response in conductive beds
30 cm (12") for 90 % response in conductive beds
Detection of Boundary: Up to 5,2 m (17 ft)
Range: 0 - 2070 bar (30,000 psi) / Accuracy: ± 0.25% of full scale / Resolution: 0,35 bar (5 psi)
Sensor Type: Tri-axial Accelerometer and Tri-axial Flux Gate
Magnetic2 Toolface &
Inclination
Azimuth2,3
Total Magnetic Field
Dip Angle2
Gravity3 Toolface
0° - 180°
0° - 360°
0° - 360°
0 - 100,000 nT
-90° - +90°
0.09°
0.35°
1.4°
35
0.04°
±0.1°
±1.0°
±1.5°
±100
±0.2°
Sensor Type: Axial Vibration: One Accelerometer, z direction / Lateral Vibration: 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 & Max. lateral and axial vibration in g-RMS and as severity level
Sensor Type: Two Axis Magnetometer
0 - ±1000 RPM (±1% Accuracy)
Downhole RPM, Stick-Slip transmitted as severity level
Min., Max., Average RPM, Stick-Slip & Backward Rotation severity
2
For a typical magnetic field value at 30° latitude
3
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 Documentation & Records Management System(s) Group.
AOA-70-01-001