135152 ⎘
Special methods or apparatus for drilling; Drilling with mechanical conveying means with helical conveying means combined with a bucket-type container
Cryogenic core collection
#2Axially separating drill bucket
#3Portable modular earth boring machine
#4Wireline drilling system
#5Drilling device and method for producing a borehole
#6System and method for controlling steering in a rotary steerable system
#7Earth drilling device
#8Boring system and method therefor
#9Pile boring tool for producing a pile bore
#10Bedrock drilling and excavating apparatus