Recovery taps
A complete range of recovery taps is available to cover all sizes of drill rods. The recovery taps are typically fitted with female (box) threads and are classified with a double number that corresponds to the smallest and largest diameter of their pike cone, named the working range.
The inner diameter of the tool to be fished must fall within the range of the selected recovery pipe working range. The pikes are fitted with either a right hand or left hand threading. Right hand threaded pikes are intended to retrieve a complete string from the bore-hole, whereas left hand versions are used when the purpose is to unscrew the free part of the string.
Recovery bell taps
Bell type recovery tools are designed to retrieve lost tools in a bore-hole by griping on their outside. For that reason, bell taps are usually selected over recovery taps when the lost tool is of relatively small diameter compared to the diameter of the bore-hole.
The recovery bell taps are typically fitted with female (box) threads and are classified with a double number that corresponds to the smallest and largest diameter of their inverted threaded cone, named the working range.
The outer diameter of the tool to be fished must fall within the range of the selected bell tap working range. The bell cones are fitted with either a right hand or left hand threading. Right hand threaded pikes are intended to retrieve a complete string from the bore-hole, whereas left hand versions are used when the purpose is to unscrew the free part of the string.
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For additional details, download relevant technical catalogue. |
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