Device and method for shifting a port collar sleeve

Device and method for the determination of fracture...

Device and method of lining a wellbore

Device and method of lining a wellbore

Device and method to control the path of a drill hole

Device and method to seal boreholes

Device and sample holder disk for measuring the permeability...

Device at rock drill equipment for mechanized drill bit...

Device by a retrievable bridge plug

Device comprising two elements hinged in a plane, used in...

Device for a curved conductor pipe for a pull wire

Device for a downhole apparatus for machining of casings and...

Device for a rock wall

Device for adjusting the path azimuth of a rotary drilling tool

Device for an opening in an outer sleeve of a sleeve valve...

Device for analysing at least one gas contained in a liquid,...

Device for anchoring a drill string in a borehole

Device for anchoring a probe in a well by means of spreading...

Device for anchoring an oil well tubing string within an oil...

Device for annular well isolation