Installation and guide device for underwater basal disc for blowout preventer

Abstract

The invention discloses an installation guiding device for an underwater template of a blowout preventer, which comprises a guiding rope inserted in a guiding pile of the blowout preventer, and a positioning piece, wherein the lower end of the guiding rope is provided with a hooking piece, the guiding rope is provided with a heave compensation tensioner, the positioning piece is arranged on the periphery of the well mouth of the template, and the hooking piece and the positioning piece are matched with each other to finish the installation guidance of the blowout preventer so that the blowoutpreventer is butted with the well mouth accurately. The device is completely capable of replacing a guiding base plate, and has the advantages of simple operation, speediness and convenience, low cost, and reusability.

Description

technical field [0001] The invention relates to a blowout preventer installation device, in particular to an underwater base plate installation guide device of a blowout preventer of an underwater cluster well. Background technique [0002] The underwater blowout preventer is a special wellhead pressure control equipment for floating drilling ships. It is lowered from the moon pool of the drilling ship and docked with the underwater wellhead head. For the safety and efficiency of the docking, it is necessary to install the corresponding BOP guide system. Usually offshore exploration well (single well) operations use permanent guide base plate (PGB) and guide rope as the guide system of the underwater blowout preventer, such as figure 1 , 2 Shown is the structure diagram of the permanent guide base plate. Before launching into the water, the guide base plate is locked on the 30" conduit head, and 4 guide ropes are installed in the 4 guide columns at the four corners of the g...

AI Technical Summary

Problems solved by technology

The guiding device of the above-mentioned blowout preventer group cannot be used in offshore oil fields developed with cluster wells (multi-wells). First, because the guiding base plate is locked on the 30 "pipe head, the 30 "pipe must be cut off when the well is abandoned. It is recovered together with the 30″ catheter head; if the guide base plate is not recovered, one guide base plate is installed at each wellhead, which will inevitably increase the well spacing, resulting in an increase in the size of the entire base plate, and the corresponding jacket platform area will also increase, which will Increase the investment of the entire project, and the second is not to recycle the guide device. With the increase of the number of wells, there are 4 guide ropes on each substrate. Many guide ropes are easy to entangle the control cables of the underwater robot, which greatly increases the number of underwater vehicles. Risks of working with robots

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