Stockholm Precision Tools

Gyroscopic and Magnetic Borehole Survey Instruments, and Downhole Survey Tools

Domherrevägen 11, 192 55 Sollentuna, Sweden



Stockholm Precision Tools is well-known for its downhole gyro-surveying systems, borehole survey instruments and subsystems used for directional surveying and navigation, including the GyroTracer Directional™ Continuous North-Seeking Gyro and the GyroLogic™ Fiber-Optic Gyro.

SPT systems are advanced, rugged, reliable and accurate downhole measurement tools designed for the global resources industry. From oil and gas wells to base and precious metals mining operations, our borehole downhole navigation tools are trusted across the globe.

High-speed continuous north-seeking gyro

The latest addition to SPT’s product range is the GyroTracer Directional North-Seeking High-Speed Continuous Gyro. This instrument can survey the wellbore at speeds of up to 150m/min while simultaneously sending data to the surface equipment.

It can accurately survey all well profiles, from vertical to horizontal, and can carry out continuous surveying at high latitudes or inclinations with no drop in accuracy.

The GyroTracer Directional does not require any surface alignment or calibration prior to use, making it one of the most efficient and versatile gyro instruments on the market.

Fiber-optic gyro for borehole surveying

Another new product in the SPT range is the GyroLogic Downhole Directional Survey Tool. This rugged and reliable instrument uses a Fiber-Optic-based Gyro to find direction and can accurately survey all well profiles at all inclination angles.

The device is controlled using a tablet PC supplied with the system and can provide directional data (azimuth and dip) at any interval from inside all types of drill rods.

The GyroLogic is easy to use and can be employed in a variety of applications including shallow borehole and deep borehole surveying, single shot/multi shot and continuous mode.

North-seeking gyro

The GyroTracer Directional is a highly accurate, extremely reliable downhole directional survey and orientation tool. Comprising the latest technology, the SPT system uses the gyro-compassing method to find direction.

As it is a north-seeking gyro, all measurements are in reference to geographic north and measure earth’s rotation directly. Unlike other downhole survey tools that use an indirect method or magnetic tools, the GyroTracer Directional North-Seeking Gyro is not affected by magnetic interference. It can be run inside casing, tubing, drill pipes and magnetically disturbed ground.

Borehole surveying instrument

The easy-to-use, 42mm diameter GyroTracer Directional system can be used for a variety of applications including shallow borehole to deep borehole surveying, high-speed continuous mode, single-shot / multi-shot applications, slim-hole casing, orientation, whip stock kick-off, and downhole motor orientation. The operating software used to run all SPT instruments is extremely reliable and user friendly.

The GyroTracer Directional package comes with both wireline and memory-mode option. It has become recognised as a benchmark technology when considering downhole gyro navigation.

Universal Calibration Stand

The Universal Calibration Stand for GyroTracer Directional is a simple to use, yet advanced design. This small, non-magnetic stand is light weight, durable and useful for testing many downhole survey instruments.

The purpose of the Universal Calibration Stand is to calibrate SPT instruments. Its second and just as important use is for highly accurate testing. Simply set the stand facing to geographic north. Once the frame has been leveled, place the tool in the stand and begin testing or calibrating.

The Universal Calibration Stand enables the customer to calibrate their own tools if required, on site, in a few hours. This saves on numerous days of down time and expensive freight costs. It also gives the customer the option of extremely accurate quality control checks of instruments in the stand and the option to simulate real situations as it has all the necessary positions.

Calibration of the SPT instruments is a very simple procedure. Tools can be tested in all inclinations (0-360º), toolface (0-360º) and azimuth angles (0-360º).

North-seeking gyro sales, rental and service

SPT’s other products include fiber-optic gyros, magnetic inclinometers with various diameters for different applications, and a portable calibration stand. With our experienced staff offering ongoing, non-stop customer support and training, the customer will always be working directly with the manufacturer and can always be confident when running SPT systems. For further information regarding sales and rental terms please contact us.

Gyro survey instruments for borehole applications

Our years of pioneering R&D and our wide-ranging experience in the industry gives us the expertise required to help you choose the correct gyro survey instrument for your requirements.

The GyroTracer Directional provides continuous reliable and accurate data for all types of borehole profiles due to the high sensitivity of a spinning mass gyro and its design. It can be utilized for various applications for the end user, including:

  • Borehole directional surveying
  • Wedge and motor orientation
  • Side tracking
  • Collision avoidance

STP Building for the Future

We are proud to announce that one of the first Omani companies that will be providing Gyro Services with 100% local workforces has acquired SPT's GyroTracer™ North Seeking Gyro instrument and has raised the bar of its directional surveying capacity and capabilities.

SPT Gyro Market Growth Set To Surge

Established in November 2006, Altain Khuder is a Mongolian registered mining and mineral exploration company with the primary objective to survey, explore, develop and mine iron ore at the Tayan Nuur mine in Mongolia, and to sell, store, transport and export iron ore products to steel mills in China.

SPT Expanding North American Markets

Stockholm Precision Tools' (SPT) state-of-the-art North-seeking GyroTracer™ has recently been acquired by a leading well logging company based in North America.

GyroTracer – A Reliable Investment

ABIM Solutions, an Australian-based company providing high quality downhole directional surveying and geophysical logging services to the West Australian mining, exploration and civil construction industries, updates its set of GyroTracer™ equipment to the latest version to continue offering high quality drillhole surveying services to its ever growing satisfied clients.

SPT Offers Unrivalled Customer Support

Stockholm Precision Tools (SPT) are proud to deliver a second to none 24/7 customer support service, which not only provides confidence to our clients but also a significant competitive edge, in that it helps them to minimise tool downtime as well as securing valuable commercial contracts.

SPT Assistance in Chilean Mine Rescue Featured in Swedish Media

The largest financial newspaper in Scandinavia, Dagens Industri, interviewed SPT general manager Orlando Ramírez on a range of subjects regarding the company's growth since its inception and the cutting-edge technology in downhole surveying that helped rescuers find the 33 trapped miners in the S

SPT Introduces Flexible Rental and Sales Options on a Range of Products

Since 1 October 2009 Stockholm Precision Tools (SPT) has been offering flexible rental and sales options for its GyroTracer, MagCruiser and other geophysical tools. Call SPT's sales team now to find out more information about the flexible and competitive rental and sales prices that are now on of

Introducing SPT’s New High-Speed Continuous Gyro

Stockholm Precision Tools (SPT) has developed an inertial north-seeking gyro that is now ready for the world market. This new generation product is the result of many hours of hard work, research and development and will meet the demand of the continuous gyro market. The GyroTracer Dire

SPT Succeeds with North-Seeking Gyro Survey Tool

High above the deep valleys and canyons in Colorado’s Piceance Basin, Frank Westcott, the president of Colorado-based Native Navigation, faces a challenge. He’s listening to his directional driller’s plan to navigate a new borehole through 16 other wells already spudded from the drill pad they’re

Gyro Survey Tool Outshines MEMS Survey Instrument

With millions of dollars on the line, even the smallest mistake can cost precious time and money. In the drilling industry mistakes cost more than money; they can result in significant damage to a company’s reputation or the environment. Most drilling contractors rely on a downhole sur

Drillog PDL of Nigeria to Improve Drilling Efficiency

Drillog Petro-Dynamics Limited (PDL), a 100% Nigerian company, is the leading oil and gas drilling service company in Nigeria, specializing in directional / horizontal drilling, rotary steerable drilling, MWD / LWD, bore hole surveys, well planning and design and formation evaluation while drilli

SPT’s MagCruiser HT Goes East to West

The newly introduced MagCruiser HT™ by SPT is a new and improved high temperature version of the MagCruiser™. Sales of the instrument have now gone global, reaching as far east as Australia and as far west as South America. Since late 2008 the introduction of the MagCruiser

Stockholm Precision Tools Makes its Mark in Canada

SPT has added to its existing customers in Canada, after two large Canadian mining companies acquired the SPT north seeking gyro system in December 2007 and January 2008. The order from Goldcorp was made in December 2008, following an inquiry from Goldcorp's senior surveyor. In January