The sliding base of the guide arm of the guide tooling for lowering the Christmas tree

Abstract

A guide arm sliding base of a Christmas tree-running guide tool is disclosed. The guide arm sliding base comprises a main structure and a sliding base backboard, wherein the main structure is connected on a sliding rail integrally and movably; the main structure comprises a head portion and a tail portion; the head portion is provided with a connecting-arm plug groove, connecting holes are formed in the two ends, in the axial direction, of a connecting arm, and connecting holes matched with the connecting arm are formed in the connecting-arm plug groove correspondingly; the guide arm sliding base is connected with a Christmas tree guide arm or a drilling pipe guide arm to be a whole in a positioning mode through the connecting arm which is connected with the guide arm sliding base in a plugged mode, and the whole forms an independent-function structural member which can accompany and guide a Christmas tree or a drilling pipe to be put downhole in the vertical direction of the sliding rail; the tail portion of the main structure of the sliding base is movably connected with a head-portion structural member of the sliding rail through the sliding base backboard; and the tail portion of the main structure of the sliding base is connected with the sliding base backboard in a positioning mode, and mounting lifting lugs are arranged on the main structure of the sliding base and the sliding base backboard. According to the guide arm sliding base of the Christmas tree-running guide tool, the manufacturing cost is low, and repeat using can be achieved; and strong guarantee is provided for stable running of the Christmas tree, guiding and supporting are provided for running of the Christmas tree, and stable running and safe working of the Christmas tree are ensured.

Description

technical field [0001] The invention belongs to the technical field of offshore production operation equipment, and relates to a guide tool for lowering a Christmas tree by using a semi-submersible platform, in particular to a guide arm sliding base of the guide tool for lowering a Christmas tree. Background technique [0002] The semi-submersible platform has become one of the most important offshore tooling for exploration, drilling, oil production and other production operations in deep sea and far sea due to its advantages such as wide deck space, stable offshore operation, and large variable load. It is an important wellhead control equipment for testing oil (gas) after completion of oil (gas) wells, or when producing oil from gushing wells. [0003] The christmas tree is lowered to the seabed through the drill pipe. During the process of lowering the christmas tree, the entire platform will be affected by the harsh environment such as wind, waves, and air currents at s...

AI Technical Summary

Problems solved by technology

[0005] The fixed guide structure will interfere with other operations under the condition of non-decentralized tree, and occupy the deck space for a long time, which is a great waste of limited space;

[0006] However, a single guiding device cannot effectively play a guiding role in the entire lowering space, and it is difficult to be adopted due to the high cost of equipment

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