The In-pipe Transmission Trajectory Inclinometer Independently Developed by CCTEG Xi'an Research Institute Has Been Promoted And Applied for The First Time.

Recently, the Φ18 mm small-diameter in-pipe transmission trajectory measuring instrument independently developed by CCTEG Xi'an Research Institute has been put into its first promotion and application at Huaibei Mining Group. All performance indicators of the equipment meet or exceed those of similar international products, filling the gap in China’s small-diameter in-drillpipe while-drilling trajectory measurement equipment.

In engineering fields such as geological exploration, coal mine gas control, water exploration and drainage, and directional drilling, accurate measurement and control of borehole trajectories is a key link to ensure construction safety, improve borehole-forming quality and eliminate "false drilling and idle drilling". Conventional measurement methods require drilling to be halted, featuring low efficiency, delayed data, poor anti-interference performance and reliance on imported equipment, which severely restricts the intelligent and efficient development of drilling engineering in China.

Targeting the bottleneck problem of measurement while drilling (MWD), this equipment adopts an integrated in-drillpipe transmission design. It integrates high-precision inertial measurement units, miniaturized sensor modules and real-time 3D trajectory reconstruction technology. Capable of being conveyed directly inside the drill pipe, it enables trajectory measurement without tripping out the drill string, featuring rapid measurement and precise trajectory positioning.

The equipment boasts a number of prominent advantages: first, it requires no tripping operation, no extra wiring and no special non-magnetic drill pipes, and can withstand harsh working conditions; second, it supports real-time visualization of 3D trajectories and intelligent deviation early warning; third, drilling operations can continue without shutdown, eliminating frequent tripping and running of drill pipes by on-site personnel and saving more than 95% of working time. Thanks to these comprehensive advantages, the equipment can be widely used for trajectory measurement of gas drainage boreholes, water exploration and drainage boreholes, geological exploration boreholes and other types of boreholes.