The sliding track of the guide tooling for lowering the Christmas tree

Abstract

The invention discloses a sliding rail of a Christmas tree lowering guide tool. The sliding rail is vertically arranged between a drilling table of a semi-submersible platform and a lower trolley in a moon pool area of the semi-submersible platform. A head structural component and a tail structural component are included in the two longitudinal sides and are two square steel pipes arranged side by side in a spaced manner. A common pipe head and pipe tail are fixedly connected to the upper ends and the lower ends of the two square steel pipes. The tail structural component is a connecting rod of an upper base and a lower base. The head structural component is a motion guide rail of a guide arm sliding base. The upper base, the lower base and the guide arm sliding base each comprise a back plate. A function groove of the sliding rail is formed by a longitudinal clearance between the head structural component and the tail structural component of the sliding rail in space and comprises locating mounting grooves of the upper base back plate and the lower base back plate, a movable connecting groove and a longitudinal sliding groove, wherein the movable connecting groove and the longitudinal sliding groove are between the guide arm sliding base and the sliding rail. The sliding rail is a core supporting part of the Christmas tree lowering guide tool, and powerful equipment guarantees are provided for stable Christmas tree lowering.

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 sliding track for a 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 sea, and mu...

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

Images