CN211573377U - Anti-reverse trip type anti-falling structure - Google Patents

Abstract

The utility model relates to the technical field of drilling tools, in particular to a reverse-trip prevention type drop-proof structure, which comprises a rotor, a novel drop-proof connecting rod and a reverse-trip prevention locking nut; the L department position of rotor is equipped with the left-hand thread, is equipped with the thread of just detaining in the R department position on the upper portion of left-hand thread, the front end of novel anti-falling connecting rod is screwed up on the left-hand thread of L department position, anti-reversing dropout lock nut screws up on the thread of just detaining of R department position, be equipped with spacing anti-falling step on the novel anti-falling connecting rod, spacing anti-falling step with anti-reversing dropout lock nut's terminal surface cooperation. The limiting anti-falling steps of the novel anti-falling connecting rod are in limited fit with the end face of the anti-reversing tripping locking nut, the possibility that the screw drill cannot reverse the tripping and fall into the well due to the L-shaped threads is further reduced, and engineering loss is reduced.

Description

Anti-reverse trip type anti-falling structure

Technical Field

The utility model relates to a drilling tool technical field especially relates to a prevent reverse trip formula structure of preventing falling.

Background

At present, the use of screw drilling tools in oil and gas drilling engineering has become conventional. The anti-drop assembly of one of the screw drill components aims to prevent the screw motor and the parts below the screw motor from being inadvertently disconnected due to underground complex conditions or improper operation so as to drop into the underground. In the conventional and traditional anti-falling structure at the present stage, when the anti-falling function is performed, the threads at the A position are still in a connected state, so that the screw drill can be prevented from falling into the well, but in actual work, the screw drill falling accident can be often seen because the threads at the A position are reversely buckled and even are released.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned technique, and provide a prevent that reversion dropout formula prevents falling structure.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a prevent that reversal trip formula prevents falling structure which characterized in that: comprises a rotor, a novel anti-falling connecting rod and an anti-falling tripping locking nut; the L department position of rotor is equipped with the left-hand thread, is equipped with the thread of just detaining in the R department position on the upper portion of left-hand thread, the front end of novel anti-falling connecting rod is screwed up on the left-hand thread of L department position, anti-reversing dropout lock nut screws up on the thread of just detaining of R department position, be equipped with spacing anti-falling step on the novel anti-falling connecting rod, spacing anti-falling step with anti-reversing dropout lock nut's terminal surface cooperation.

Preferably, the anti-reverse trip locking nut is provided with a sealing ring, and the sealing ring is matched with the novel anti-trip connecting rod.

Compared with the prior art, the utility model, increased the forward screw thread of rotor R department now, when the screw rod takes place the fracture accident in the pit and prevents falling the function and play a role, the reaction torque of screw rod drilling tool can make R department screw thread be in the state of tightening, novel spacing anti-falling step of preventing falling the connecting rod cooperates with the terminal surface restriction that prevents reversing dropout lock nut, further reduces the screw rod drilling tool and can not reverse the possibility that the dropout accident of falling into the well takes place because of L department screw thread, reduces the engineering loss.

Drawings

Fig. 1 is a cross-sectional view of the present device.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings. As shown in fig. 1, the anti-reverse trip type anti-drop structure comprises a rotor 1, a novel anti-drop connecting rod 2 and an anti-reverse trip locking nut 3; the L department position of rotor is equipped with the left-hand thread, is equipped with the thread of just detaining in the R department position on the upper portion of left-hand thread, the front end of novel anti-falling connecting rod is screwed up on the left-hand thread of L department position, anti-reversing dropout lock nut screws up on the thread of just detaining of R department position, be equipped with spacing anti-falling step 4 on the novel anti-falling connecting rod, spacing anti-falling step with anti-reversing dropout lock nut's terminal surface cooperation. And a sealing ring 5 is arranged on the anti-reverse tripping locking nut and is matched with the novel anti-drop connecting rod. The sealing ring is a conventional standard part; the rotor and the novel anti-falling connecting rod are innovative improved components; the anti-reverse tripping locking nut is a brand new component; the rotor is characterized in that a positive buckle (R position) is added on a reverse buckle (L position) at the top end of the original rotor.

The novel anti-drop connecting rod is characterized in that a limiting anti-drop step is added, and the novel anti-drop connecting rod is matched with the anti-drop tripping locking nut. When the screw rod is in the function of preventing the screw rod from falling down in the underground fracture accident, the reverse thread of the screw rod at the L position can be reversed due to the fact that the screw rod has the reactive torque in the underground, the screw rod is seriously even separated integrally, and the screw rod with the failure in the falling-down preventing function falls into the well. Now increased the forward screw thread of rotor R department, when the screw rod takes place the function of falling in the pit fracture accident prevention, the reaction torque of screw rod drilling tool can make R department screw thread be in the fastening state, and novel spacing anti-falling step of preventing falling the connecting rod cooperates with the terminal surface restriction of preventing reversing dropout lock nut, further reduces the screw rod drilling tool and can not reverse the possibility that the dropout well accident took place because of L department screw thread, reduces the engineering loss.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (2)

1. The utility model provides a prevent that reversal trip formula prevents falling structure which characterized in that: comprises a rotor, a novel anti-falling connecting rod and an anti-falling tripping locking nut; the L department position of rotor is equipped with the left-hand thread, is equipped with the thread of just detaining in the R department position on the upper portion of left-hand thread, the front end of novel anti-falling connecting rod is screwed up on the left-hand thread of L department position, anti-reversing dropout lock nut screws up on the thread of just detaining of R department position, be equipped with spacing anti-falling step on the novel anti-falling connecting rod, spacing anti-falling step with anti-reversing dropout lock nut's terminal surface cooperation.

2. The anti-reverse-rotation release-type anti-drop structure according to claim 1, characterized in that: the anti-reverse tripping locking nut is provided with a sealing ring, and the sealing ring is matched with the novel anti-drop connecting rod.

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