Multiple protection devices for fast locking wire ropes at the wellhead for oil development

Abstract

The invention discloses a well mouth quick locking steel wire rope multiple protection device for petroleum exploitation. The device comprises a steel wire rope roller (1), a well mouth high-pressure injection preventing pipe (4) and a well mouth injection preventing machine (6), and is characterized by further comprising a roller contact device (2), a first locking steel wire rope device (3) and a second locking steel wire rope device (5); the first locking steel wire rope device (3), the well mouth high-pressure injection preventing pipe (4), the second locking steel wire rope device (5) and the well mouth injection preventing machine (6) are fixedly connected in sequence; the roller contact device (2) and the second locking steel wire rope device (5) are correspondingly arranged; and a steel wire of the steel wire rope roller (1) penetrates through the roller contact device (2) to extend to the first locking steel wire rope device (3). The device can prevent such accidents as falling of salvaging tools into a well due to sudden rupture of the steel wire rope, can detect rupture of the steel wire rope and lock the steel wire rope for the first time to prevent the well falling accidents, and simplifies the accident processing procedures.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation, and in particular relates to a multiple protection device for fast locking steel wire ropes at the wellhead for petroleum exploitation. Background technique [0002] During well testing operations such as downhole testing and wax removal in oil production, the steel wire rope is affected by various factors, such as not being arranged neatly on the mud logging steel wire drum, and mutual extrusion causes the steel wire rope to wear out. After the worn steel wire rope is separated from the drum, it cannot bear the load, and the steel wire rope will break, resulting in the accident of the steel wire rope and tool string falling into the well. [0003] The Chinese utility model patent with the application number of 201320759249.1 discloses a wire rope anti-detachment device including a cylinder body, an upper oil collection chamber, bolts, a top plate, a rubber pad, and a lower oil collection ch...

AI Technical Summary

Problems solved by technology

[0002] During well testing operations such as downhole testing and wax removal in oil production, the steel wire rope is affected by various factors, such as not being arranged neatly on the mud logging steel wire drum, and mutual extrusion causes the steel wire rope to wear out. After the worn wire rope is separated from the drum, it cannot bear the load, and the wire rope will break, causing the wire rope and tool string to fall into the well.

[0003] The Chinese utility model patent with the application number of 201320759249.1 discloses a wire rope anti-detachment device including a cylinder body, an upper oil collection chamber, bolts, a top plate, a rubber pad, and a lower oil collection chamber. The cylinder body adopts two symmetrical half-cylinder splits The form of fastening after processing, after fastening, the upper part is a cylinder, the lower part is a cylindrical boss, and the cylinder is provided with a through hole along the axial direction for installing the locking parts. The locking parts include bolts, top plates and rubber pads. The bolts pass through The threaded holes opened on the barrel press the top plate and the rubber pad on the wire rope; the response speed and reliability of the wire rope anti-loosening device disclosed in the prior art still need to be improved

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