Blowout control pipe string wellhead alignment device and alignment method thereof

Abstract

The invention discloses a blowout control pipe string wellhead alignment device and an alignment method thereof. The blowout control pipe string wellhead alignment device comprises a base, and a swingarm capable of adjusting length is connected to the base. Lifting devices are connected to the swing arm, one ends of the lifting devices are hinged to the outer wall of the swing arm, and the otherends of the lifting devices are hinged to the base. The end portion of the swing arm is connected with a blowout control pipe string through the lifting devices, and the outer wall of the swing arm isprovided with a plurality of pushing devices for controlling positioning of the blowout control pipe string. The end portion of the base is provided with a wellhead positioning and connecting device,and after the swing arm enabling the blowout control pipe string to be vertical, the blowout control pipe string is aligned with a wellhead through the pushing devices. Special equipment in the blowout control pipe string wellhead alignment device replaces large-scale lifting general equipment in the prior art, the purchase and use fees are saved, and at the same time, rotary lifting and swing alignment are used, so that the installation and use of the blowout control pipe string are safer, more reliable and more efficient.

Description

technical field [0001] The invention relates to the technical fields of well logging, well testing and perforation in oil and gas fields, in particular to a wellhead aligning device for a blowout preventer string and an aligning method thereof. Background technique [0002] In conventional wireline logging, perforation and steel wire testing, the wellhead blowout string is a common surface wellhead pressure control device, mainly composed of blowout boxes, traps, blowout preventers, blowout preventers, etc., oil and gas fields During well logging, well testing and perforating work, it is often necessary to align the port of the blowout preventer string with a length of tens of meters to the wellhead for positioning and installation. The conventional operation method uses large-tonnage hoisting equipment, and the following problems exist: [0003] 1. In the process of hoisting the connected pipe string with a length of tens of meters from the horizontal state to the state per...

AI Technical Summary

Problems solved by technology

[0003] 1. In the process of hoisting the connected pipe strings with a length of tens of meters from the horizontal state to the state perpendicular to the ground, large deflection deformation will occur, which will have a certain impact on the service life and operation safety of the pipe strings

[0004] 2. After the pipe string is lifted vertically, the port of the pipe string swings back and forth freely, making it difficult to align with the wellhead, and the work efficiency is low

[0005] 3. The purchase and use of large hoisting equipment is expensive

Images