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1. Stockholm Precision Tools - Downhole Gyro-
Surveying Systems and Borehole Survey
Instruments
Stockholm Precision Tools is a leading manufacturer of
downhole gyro-surveying systems, borehole survey instruments,
and directional surveying and navigation products. SPT products are ideal for the tough
conditions and demanding requirements of the offshore/onshore oil and gas industry. Industry
professionals around the world rely on our rugged, reliable and accurate downhole measurement
and navigation tools to provide outstanding performance time after time.
SPT's product range includes the GyroTracer™ North-Seeking Gyro, the GyroTracer
Directional™ Continuous North-Seeking Gyro and the GyroLogic™ Fiber-Optic Gyro. All these
instruments can be calibrated by the operator with the SPT Universal Calibration Stand.
High-speed continuous gyro
The newest product in SPT's GyroTracer range is the GyroTracer Directional North-Seeking,
High-Speed Continuous Gyro. This versatile tool can survey a wellbore at speeds up to
150m/min while simultaneously sending data to surface equipment.
The GyroTracer Directional is well suited to offshore applications as it can accurately survey all
well profiles, from vertical to horizontal. It is a highly reliable instrument, able to handle
continuous surveying at high latitudes or inclinations with no loss of accuracy, and it does not
require any surface alignment or calibration prior to use, making it one of the most efficient and
flexible gyro instruments available.
Fiber-optic gyro
SPT's new GyroLogic Downhole Directional Survey Tool uses a fiber-optic-based gyro to find
direction. This rugged, easy-to-use instrument can be employed in a variety of offshore
applications, including shallow / deep borehole surveying, single shot / multi shot and
continuous mode.
The GyroLogic fiber-optic giro can accurately survey all well profiles at all inclination angles,
and can provide directional data (azimuth and dip) at any interval from inside all types of drill
rods.
North-seeking gyro

2. The original GyroTracer North-Seeking Gyro is extremely reliable. Featuring the latest
technology, this accurate downhole directional survey and orientation tool uses the gyro-
compassing method to find direction.
Unlike other downhole survey tools that use an indirect method or magnetic tools, the
GyroTracer North-Seeking Gyro is not affected by magnetic interference so it can be run inside
casing, tubing, drill pipes and magnetically disturbed ground.
Downhole gyro navigation
The 42mm diameter GyroTracer Directional™ system is ideal for use in a range of applications
in the offshore industry, including shallow borehole and deep borehole surveying, high-speed
continuous mode, single-shot / multi-shot applications, slim-hole casing, orientation, whip stock
kick-off, and downhole motor orientation.
Supplied with both wireline and memory-mode options, the GyroTracer product is established as
a benchmark technology for downhole gyro navigation, and the operating software that runs it is
extremely user friendly.
Calibration and testing stand
The Universal Calibration Stand for the GyroTracer Directional is designed for testing and
calibration. It is lightweight and hard-wearing, ideal for accurate testing of a range of downhole
survey instruments. It is a compact, non-magnetic stand that features advanced design while
remaining incredibly easy to use.
The Universal Calibration Stand allows customers to calibrate their tools on site, in just a few
hours, saving time and money. It also enables accurate Quality Control checks of instruments in
the stand and the option to simulate real situations. Tools can be tested in all inclinations (0-
360º), toolface (0-360º) and azimuth angles (0-360º).
Magnetic inclinometers and portable calibration stands
SPT offers a variety of other products, including magnetic inclinometers and portable calibration
stands. In addition, our friendly and experienced staff offers ongoing customer support and
training so you can be confident that SPT is always on hand to support you. For further sales and
rental information please contact us to discuss your specific requirements.
Gyro instruments for borehole surveying
SPT has dedicated a huge amount of resources, time and energy to R&D, and we constantly push
ourselves to explore new areas, giving us wide-ranging expertise that can help you choose the
correct gyro survey instrument for your project.

3. The GyroTracer Directional provides continuous reliable and accurate data for all types of
borehole profiles. It can be utilized for various applications, including:
 Borehole directional surveying
 Wedge and motor orientation
 Side tracking
 Collision avoidance
Contact Details
Stockholm Precision Tools AB
Domherrevägen 11
192 55 Sollentuna
Sweden
Tel: +46 859 073 310
Fax: +46 8 590 73155
Email: sales@stockholmprecisiontools.com
URL: GyroLogic downhole directional survey tool
URL: GyroTracer Directional north-seeking gyro
URL: GyroTracer north-seeking gyro
URL: MagCruiser magnetic inclinometer
URL: www.stockholmprecisiontools.com
SPT is a specialist manufacturer of downhole gyro-surveying systems,
borehole survey instruments, and directional surveying and navigation products.
The GyroTracer Directional north-seeking, high-speed continuous gyro.
The rugged GyroLogic downhole directional survey tool.
The GyroTracer can provide reliable and accurate data for all types of
borehole profiles.

4. Universal Calibration Stand for calibration and testing of downhole
survey instruments.
Offshore professionals worldwide rely on our borehole downhole
measurement and navigation tools.
Ensure drilling accuracy and efficiency with SPT products.
Our friendly and experienced staff offer ongoing customer support and
training.
Make An Enquiry