Sperry Drilling services' Evader® MWD gyro service was developed to fill a critical industry need: to provide faster, safer, more accurate drilling from offshore multi-well platforms. In the past, a wireline gyro was used to take a gyro shot to orient the pipe and survey the well. This activity can be time-consuming, as well as pose a health, safety and environments (HSE) risk. In between shots, the tool was steered without real-time orientation, increasing the possibility that the motor toolface could change direction and drill into a nearby well.
Eliminates the need to use wireline gyros to orient or steer the drilling assemblies, which saves considerable rig time and provides for safer operations
Rate gyro accuracy assures precise wellbore guidance for collision avoidance and precise trajectory placement
Unaffected by magnetic interference, the sensors can run closer to the bit in the MWD string by eliminating the need for non-magnetic spacing collars for the gyro sensor
The tool's modular design allows it to be placed anywhere in the drill collar
The tool may be run with either positive pulse or negative pulse telemetry systems
The service utilizes the InSite® rig information system and complements Sperry's suite of LWD tools