Well testing steel wire releasing tool

Abstract

The invention discloses a well testing steel wire releasing tool which comprises a salvage head, a mandrel, an outer spring, a transposition pin, an upper torque ring, a rotary nut, an outer cylinder,a lower torque ring, an inner spring and a duckbill. The well testing steel wire releasing tool is connected into a well testing tool string and lowered into a well with all tools simultaneously, when the tool is clamped and cannot be unclamped through other unclamping tools, a well testing steel wire can be gently lifted and lowered up and down, when the number of lifting and lowering times reaches a certain numerical value, downhole tool releasing is achieved, all the tools above the well testing steel wire releasing tool can be safely lifted to the ground, the construction loss is reducedto the largest limit, and well testing steel wire fatigue caused by multiple-time shock can also be avoided.

Description

technical field [0001] The invention relates to the technical field of workover construction equipment for oil and water wells in oil fields, in particular to a hand-off tool for well testing steel wires. Background technique [0002] During the well testing construction process in the oil field, when the downhole well testing tool is stuck, the commonly used treatment measures are to use various jars to jar upwards, including mechanical jars, spring jars, hydraulic jars, etc. If the problem cannot be solved through the above measures, put the cutter into the well to cut the steel wire and then lift the steel wire to the ground. The problem with the above method is that the strength of the steel wire near the pulley is reduced and broken due to repeated shocks. The well tool is left in the well and cannot be removed; while the delivery cutter can only take out the steel wire in the well, and all other well testing tools in the well still remain in the well. Contents of the...

AI Technical Summary

Problems solved by technology

[0002] During the well testing construction process in the oil field, when the downhole well testing tool is stuck, the commonly used treatment measures are to use various jars to jar upwards, including mechanical jars, spring jars, hydraulic jars, etc. If the problem cannot be solved through the above measures, put the cutter into the well to cut the steel wire and then lift the steel wire to the ground. The problem with the above method is that the strength of the steel wire near the pulley is reduced and broken due to repeated shocks. Well tools are left in the well and cannot be removed; while the delivery cutter can only take out the steel wire in the well, all other well testing tools in the well remain in the well

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