Journal of the Association of Engineers, India

Ajit Singh ¹, B. K. Banerjee ¹

Affiliations
1 Geological Survey of India, IN

Abstract

In a fishing operation at a Borehole in Bankipur Drilling Camp at Malda (West Bengal), there were frequent failures of taps (a conventional tool for recovery of casings, rods etc.), which gave rise to the design and manufacture of a wedge type casing recovery tool. Though in a somewhat crude form in the beginning (the tool was fabricated in the camp), it successfully recovered 84 mm. casings. The design was further improved and the tool later put to general use in the drilling camps where such an emergency arose.

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