Scientific Drilling’s Gyro Measurement While Drilling (gyroMWD) systems are built upon decades of experience and offer complete peace of mind in an accurate and dependable survey program from a partner you can trust. Whether navigating offset wellbores in a congested field, orientating a whipstock for kick-off, or using multiple MWD data sets for survey validation, Scientific Drilling’s gyroMWD systems hold the solution.


SDI’s gyroMWD technologies eliminate hazards and personnel from the rig and offer significant time savings, allowing for an optimized drilling program. Therefore, the technology enables high accuracy drilling in magnetic interference and offers survey redundancy in non-interference zones.


Our gyroMWD technologies define SDI as the ultimate partner in wellbore positioning, meeting industry demand, and exceeding expectations. Recent projects have involved:

/ Batch set top hole drilling with ZeroPOB in a remote region.

/ Deepsea whipstock orientations and casing exits.

/ High inclination / high latitude operations on offshore platforms.

/ Complex collision avoidance in high-angle trajectories.

/ Advanced wellbore surveying in a relief well intercept.

Our gyroMWD tools can connect to the leading directional providers’ MWD/ LWD and RSS systems or run within Scientific Drilling’s Falcon MP and Falcon EM systems.



URSA is Scientific Drilling’s state-of-the-art high-angle solid-state gyroMWD sensor. Built using SDI’s proprietary solid-state gyro sensors, URSA gyroMWD redefines survey accuracy with an optimized system built on experience. A robust and ruggedized system named for its association with one of humanity’s most historic navigational aids, URSA represents strength and resilience.

Available in a range of configurations as an integrated module within our directional partner’s MWD systems or utilizing SDI telemetry, with service packages ranging from complete to ZeroPOB, URSA gyroMWD enables the ultimate flexibility in precision wellbore placement while delivering industry-leading angle capability.


Keeper gyroMWD

Powered by Scientific Drilling’s proven north-seeking spinning mass Keeper Gyro, the Keeper gyroMWD system delivers drilling confidence by enabling precision surveying even in magnetic interference. Providing preventative measures for collision avoidance and allowing peace of mind in an advanced survey system, Keeper gyroMWD is available as an integrated module within our directional partner’s MWD systems or utilizing SDI’s proven telemetry. SDI’s Keeper gyroMWD systems provide a robust and dependable while-drilling solution, adaptable to many drilling environments and backed by over twenty years of industry use and acceptance.


Scientific Drilling’s gyroMWD module systems incorporate our industry-leading north-seeking rate gyro technologies into the leading MWD suppliers’ equipment, saving significant rig time and providing a safer working environment in an optimized package.

Scientific Drilling’s gyroMWD Module designs provide seamless compatibility with existing MWD and rotary steerable systems. Compatible with our Keeper and URSA technology, gyroMWD Modules offer reliable measurements and are backed by our robust quality system, extending from our manufacturing and calibration centers to our global operations network.


The gyroMWD Module delivers the precision, productivity, and peace of mind that the industry demands, as it:

/ Ensures precision downhole surveying in areas with heavy magnetic interference

Provides precision, dependable and repeatable measurements using a stabilized sensor platform, high-accuracy survey inclination, and azimuth. Real-time steering true gyro tool face and high side tool face, temperature, Earth Rate Horizontal, and advanced QA Parameters measurements

/ Allows precision continuous gyro tool face for complex steering

/ Reduces cost through rig time savings and drilling optimization

/ Enables operational efficiency through flexible BHA configurations



As a modular add-on to industry-leading MWD/ LWD and RSS systems, Scientific Drilling’s URSA gyroMWD Module combines state-of-the-art high-accuracy solid-state gyro surveys with dependable quality assurance you can trust. Designed with industry needs both now and in the future at the forefront, SDI’s URSA solid-state technology provides the most accurate gyroMWD system in a flexible package. Delivering world-class accuracy even in the presence of magnetic interference and offering peace of mind preventative measures for collision avoidance, URSA gyroMWD Modules are adaptable to suit global requirements. SDI offers a reduced footprint, significant rig time savings, and an ever-expanding feature set. URSA gyroMWD represents the ultimate solution in wellbore placement.


Keeper gyroMWD

As a modular add-on to industry-leading MWD/ LWD and RSS systems, SDI’s Keeper gyroMWD Module delivers accuracy in magnetic interference, providing preventative measures for collision avoidance and allowing drilling operations to remain on time and target.