The Taper Tap is an internal catch fishing tool designed to retrieve bubular members from the well bore. It is the most economical tool of its kind for freeing fish.

Construction:

The Taper Tap is manufactured from high grade alloy and specially heat treated. The basic Taper Tap is a single piece construction. The hardened cutting teeth (wickers) are carbo-nitrided and machined on a shallow taper (approximately 3/4 inch per food) to provide an excellent grip for light duty pick-up jobs. Plain water-tight wickers are furnished as standard equipment. Fluted wickers are also available on request. Taper Taps are furnished either plain or threaded for skirts.

Assembly and operation:

Assemble the Taper Tap to the bottom of the fishing string. Run in the hole until reaching the fish. Apply mimimum weight(less than one point) and rotate sufficiently to allow the wicker threads to be embedded in the interior surface of the fish.(be careful not to apply excessive weight or to ratate excessively. This could cause damage to the wicker.) once the fish has been securely engaged, it can be lifted from the hole.

Taper Tap for Drilling
Type		I.D Mm(in)	Connection			Fishing Range mm(in)
GZ/NC31(LH)		20(4/5)	NC31			48~66
GZ/NC38(LH)		20(4/5)	NC38			60~77
GZ/NC50(LH)		25(1)	NC50			89~103
GZ/NC50(LH)		25(1)	NC50			90~113
Taper Tap for Workover
Type	I.D.mm(in)			Connection	Fishing Range Mm(in)
GZ/NC26(LH)	13.5(1/2)			NC26	39(1 1/2)~67(2 5/8)
GZ/NC31(LH)	20(4/5)			NC31	54(2 1/8)~77(3 1/32)
GZ/NC31(LH)	25(1)			NC31	72(2 7/8)~93(3 5/8)
GZ/NC38(LH)	30(1 1/5)			NC38	88(3 1/2)~103(4 1/16)