135191 ⎘
Special methods or apparatus for drilling; Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means using down-hole drives
Downhole force generating tool
#2Bypass valve
#3System and method for laying underground cables or underground lines in the ground near the surface
#4Method of using a downhole force generating tool
#5Downhole force generating tool
#6WELL COMPLETION SYSTEM AND METHOD, DRILLED WELL EXPLOITATION METHOD, USE OF SAME IN THE EXPLOITATION/EXTRACTION OF DRILLED WELLS, PACKAGING CAPSULE, TELESCOPIC JOINT, VALVE AND INSULATION METHOD, AND VALVE ACTUATION SYSTEM, SELECTION VALVE AND USE OF SAME, CONNECTOR AND ELECTROHYDRAULIC EXPANSION JOINT
#7Latchable casing while drilling systems and methods
#8Center-pillared full-face shaft drilling machine
#9Liner drilling using retrievable directional bottom-hole assembly
#10Method of using a downhole force generating tool
#11Downhole force generating tool
#12Downhole force generating tool
#13Method of using a downhole force generating tool
#14Methods and apparatus for wellbore construction and completion
#15SLOTTED LINER DRILLING
#16WELLBORE REAMING TOOL HAVING LOCKING CLUTCH FOR DRILL OUT AFTER RUNNING WELLBORE TUBULARS
#17One trip casing or liner directional drilling with expansion and cementing
#18Wellbore completion system with reaming tool
#19Methods and apparatus for wellbore construction and completion
#20Apparatus and method for cutting a wellbore
#21Running bore-lining tubulars
#22Construction of a Tubular at a Downhole Location
#23Method and apparatus for wellbore construction and completion
#24Downhole fluid loss control apparatus
#25Apparatus for selective placement of auger or rod type anchors