Maximum accuracy in intersect drilling with Radar

The underground infrastructure is becoming increasingly complex. As a result, the demand for longer drillings continues to grow. However, with longer bores, the annular pressure inside the borehole increases, raising the risk of blowouts and other damages. By using the intersect method, where drilling is performed from both sides toward a meeting point, the total bore length is effectively halved, keeping pressure levels safely below the danger zone.

To meet the specific demands of intersect drilling, Brownline developed Radar: an integrated technology within our Drillguide steering service. Radar is used in combination with the Drillguide Gyro Steering Tool, the industry’s leading tool for real-time, highly accurate position determination during drilling. Radar makes it possible to drill from both sides with maximum precision. How does it work?

• During drilling, the surveyors on both sides stay in constant communication about their progress. Because both systems are connected to the internet, they can also monitor each other’s measurements. The point and timing of the intersect are determined in consultation.

• On one side, the bore is pulled back, and an attempt is made to intersect “blindly” toward the opposing borehole.

• If the borehole is not found, both sides continue drilling forward until the Radar tools come within range.

• As the two drill heads approach each other, the Radar modules establish communication. The relative distance between the boreholes is then automatically and accurately measured.

• Thanks to these precise measurements, our surveyors can determine exactly how to drill into the opposing borehole while maintaining the minimum radius. This ensures that the boreholes connect smoothly, without abrupt bends in the drilled path (known as doglegs).

Watch the video below for a clear explanation of this process.

The Radar enables long-distance drilling with the highest accuracy for the entry point. In the video below, we'll explain the operation of the Radar while applying the intersect method. We have worked out another example where drills have been carried out over a length of 5 km.

Are you curious about our projects where the intersection method and our Radar have been used? Then read our case about the record-breaking drilling project in Texel.

Since 1994, Brownline has been developing measurement and navigation technologies that stand out for their accuracy, reliability and ease of use. With our Drillguide steering service, we provide a solution that makes navigating through increasingly complex underground infrastructure significantly safer and more efficient. The tool is part of our complete steering service. With our advanced technology and years of experience, we ensure that every drilling project can be executed with precision.

More than 25,000 projects around the world have already been successfully completed using our tools and add-on modules. Want to know how our steering service can enhance your drilling project? We’re happy to help.