Accessories
Technidrill offers a wide range of useful accessories and / or necessary for the realization of your cores.
Triplex inner tube
To improve recovery of undisturbed cores in soft, non-homogeneous or fractured formations, the triplex inner tube made of transparent plastic is most commonly used. The core barrel, mentionned in the list can be equipped with the liners. The core barrel are then fitted with bottom discharge bits. The drilling mud flushing through the holes on the surface of the bit
reduces considerably erosion of the cores. The transparent liner, not attached to the inner tube, is easily extracted, reducing so down times. To upgrade a double tube core barrel to a triple tube, only 3 parts are to be replaced : core lifter, core lifter case and the drill bit.
Outer & inner tube core barrel wrenches
To extract the core when the inner tube of the core barrel is full, the driller has to unthread the inner and outer tubes of the core barrel (except for wireline core barrels).
So as not to damage the tubes with the wrong type of wrenches, we propose a complete range of wrenches, adapted for each diameter.
Recovery Taps
Our recovery taps are heat treated. Our range covers all sizes of drill rods and casing tubes, core barrels, bits and reaming shells.
A recovery tap will catch the tubular object from the inside. The recovery tap must have a working range (ex.: small diameter 34mm / big diameter 54mm) which covers the I.D. of the rod (ex. : 44mm). The thread connection should be the same as that of the fishing rod string. Choose: right hand threading or left hand threading.
Right hand threaded taps are intended to pull out the complete string from the hole. If the string is stuck a left hand tap is used for unscrewing the free part of the string.
Recovery Bell Taps
A recovery bell tap will catch the tubular object from the outside and is therefore recommended when an item of relatively small diameter is lost in a large diameter drill hole. The recovery bell tap must have a working range (ex.: small diameter 43mm / big diameter 74mm) which covers the O.D. of the rod (ex. : 60mm). Also, the O.D. of the bell tap should be the largest available but should not exceed the hole diameter.
The type of thread connection chosen should be the same as that of the fishing rod string. A choice: right hand threading or left hand threading?
Right hand threaded bell taps are intended to pull out the complete string from the hole. If the string is stuck a left hand bell tap is used for unscrewing the free part of the string.
Hoisting Swivel
