Improving Borehole Survey Accuracy in Mining Exploration The importance of using the correct gyro survey tools and quality controls for borehole trajectory accuracy in mining
During the execution of this job, there were three main challenges
CHALLENGE #1 - Perforation Zone
Be able to run the whipstock assembly through the perforation zone.
Challenge #2 - Dimensions
2 7/8in Drill pipe with ID 50mm. The available Gyro tool for the orientation has an OD of 49 mm. A clearance of 1 mm is too low to guaranty the passage of the Gyro tool.
CHallenge #3 - Survey Data
There was no prior survey data of the current well.