Continuous pendulum shock tool

Abstract

The invention relates to a continuous pendulum shock tool used for drilling string and jam release of fishing operation in the petroleum and nature gas industry, aiming at solving the problem that drilling tools jammed by downhole falling objects can not be fished out in the fishing operation. The continuous pendulum shock tool is technically characterized in that a rubber stator is fixed in an inner cavity of a stator shell, and a screw rotor is arranged in an inner cavity of the rubber stator; the upper end of a universal shaft is connected with the lower end of the screw rotor by screw threads, and the lower end of the universal shaft is connected with the upper end of a rotating cylinder by screw threads; the upper end of a cam drum is connected with the lower end of the rotating cylinder by screw threads; the lower end of a reciprocating barrel is connected with the upper end of an upper flow distribution body by screw threads, and the lower end of the upper flow distribution body is connected with the upper end of a lower flow distribution body by screw threads; the upper end of a swing shell is connected with the lower end of a connector by screw threads, and the lower end of the swing shell is connected with an anti-drop end cover by screw threads; the upper end of a swing barrel is connected with the lower end of a bearing seat by screw threads, and the lower end of the swing barrel is connected with the upper end of an output barrel by screw threads; the lower end of the output barrel is connected with the upper end of a lower connector by screw threads. The continuous pendulum shock tool can be controlled by using drilling fluid flow, can realize jam release by means of continuous pendulum shock, and effectively realizes free fishing operation of the downhole falling objects.

Description

technical field [0001] The invention relates to a continuous pendulum jarring tool used for unblocking drill strings in the oil and gas industry. Background technique [0002] In the oil and gas industry, during the development of oil and gas reservoirs, accidents of fish falling to the bottom of the well due to drill strings and tubing string breaks occur from time to time. In the case of such fish falling accidents, it will hinder the normal development operation process, and even cause more serious derivative accidents, resulting in huge economic losses. Therefore, it is necessary to deal with such fish falling accidents immediately. The simple and effective way to deal with it is salvage operation. [0003] The conventional method of salvage operation is to use fishing tools such as spears and canisters to catch the fallen fish, and then lift the salvage string to recover the fallen fish to complete the processing of the salvage operation. However, it happens from time...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a continuous pendulum jarring tool in order to solve the problem that the fish is stuck in the drill and cannot be salvaged.

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