JPS5926699A - Connecting device for submarine pipeline - Google Patents

Abstract

PURPOSE:To prevent a submarine pipeline from being cut, by a method wherein a submarine pipeline and a submarine bottomed oil-storing tank are connected to each other by two pipes jointed to each other by a flexible pipe joint, and a buoyancy body is fitted to the joint part of the two pipes. CONSTITUTION:A connecting end part 3A of the submarine pipeline 3 and a connecting end part 2A of the submarine bottomed oil-storing tank 2 are connected to each other by the two pipes 5A, 5B jointed to each other by the flexible pipe joint 4A, and the buoyancy body 6 is fitted to the pipe joint 4A. Accordingly, even when the position of the tank 2 is fluctuated, the displacement can be absorbed by the connecting device, so that the pipeline 3 can be prevented from being cut.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a submarine pipeline connection device for vessels.

For offshore oil production facilities, when the production site is far from the land and the construction cost of an offshore pipeline is not profitable considering the size of the oil field, it is best to temporarily store the oil on-site and then transport it by tanker. It will be done.

There are two ways to store this on-site: the floating type and (1) the seabed type, but the floating type is affected by wind and waves and has problems with its mooring method, so the seabed type is better. preferable.

However, if a submarine pipeline is used to connect a bottom-bottomed oil storage tank to production equipment installed on the seabed, or shipping equipment installed on the seabed, it will be affected by the ground and geology of the seabed, especially in earthquake-prone areas or soft geology. By the way, there is a risk that the oil storage tank, which is heavy, may move or tilt, and if the oil storage tank moves, the undersea pipeline connecting to the production equipment or shipping equipment will be severed, causing oil to spill out into the ocean. There is a problem of pollution.

Therefore, the present invention solves the above-mentioned conventional problems and flexibly connects the connecting part of submarine equipment such as submarine oil storage tanks to the submarine pipeline, thereby preventing the oil storage tank from moving or tilting. However, the purpose is to absorb it.

That is, the submarine pipeline connection device of the present invention has (9
) Connect the connecting end of the submarine pipeline and the connecting end of the submarine landing equipment to the other end of each of the two pipes connected with a flexible pipe joint. It is constructed by attaching a buoyant body near the joint of the two pipes.

An embodiment of the present invention will be described below with reference to the drawings.
The drawing is a schematic layout of the vicinity of a submarine oil storage tank to which the submarine pipeline connection device of the present invention is applied.

First, a submarine pipeline B is installed on the seabed in order to connect oil production equipment or shipping equipment (not shown) to the submarine oil storage tank 2, which is a submarine equipment installed on the seabed 1. The other end of two rigid pipes 5Al and 5B connected by a flexible pipe joint 4A and a flexible They are connected with flexible pipe joints 4B and 4C.

These flexible pipe joints 4A, 4B, and 4C may be any flexible pipe joint, such as a pole joint or a universal joint with a swivel joint.

Next, the flexible pipe joint 4B provided at the connection end 6A of the submarine pipeline B and the connection section 2 of the submarine oil storage tank 2
, The intermediate flexible pipe joints 4A other than 4C may not follow the movement of the bottom-bottomed oil storage tank 2 that has landed on the seabed 1, or the flexible pipe joints 4A may be contaminated with earth and sand. In order to prevent the seal from deteriorating, a buoyant body such as a float is placed near the flexible pipe joint 4A or the connection with the two pipes 5A and 5B. 6 is attached, and that part is constantly floating in the water.

Therefore, if the submarine pipeline connection device of the present invention is applied to the connection between a submarine pipeline and various submarine landing equipment such as an oil storage tank, even if the position of the submarine landing equipment moves, the connection It is effective in preventing ocean pollution accidents caused by oil spills, as it can be absorbed by equipment and prevent submarine pipelines from being cut.

[Brief explanation of the drawing]

The drawing is a schematic layout of the vicinity of a submarine oil storage tank to which the submarine pipeline connection device of the present invention is applied. 2... Submarine oil storage tank, 2A... Connection part, 3.
... Submarine pipeline, 3A... Connection end, 4h, 4
Bs4C...Flexible pipe joint, 5A, 5B...Pipe, 6...Floating body. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

[Claims] The connecting end of the submarine pipeline and the connecting end of the submarine landing equipment are connected using flexible pipe fittings to the other ends of two pipes that are connected with flexible pipe fittings. A submarine pipeline connecting device characterized in that a buoyant body is attached near the joint of the two pipes.