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Spherical pig receiving-sending device and method

A technology of transceiver device and pigging ball, which is applied in cleaning methods and appliances, chemical instruments and methods, cleaning hollow objects, etc., can solve problems such as unsatisfactory, displacement, and stability cannot be guaranteed, and achieve seawater corrosion prevention, The effect of ensuring safety and reducing the workload of underwater construction

Active Publication Date: 2014-04-16
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology

Therefore, it is impossible to meet the requirements for cleaning, measuring diameter and purging air of the subsea hose within the specified time
[0005] And since the subsea hose is laid to the bottom of the sea, the air in the subsea hose is atmospheric pressure, and its stability cannot be guaranteed without water injection, and it may be displaced due to the impact of the water flow, so the hose should be completed as soon as possible. water injection

Method used

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  • Spherical pig receiving-sending device and method
  • Spherical pig receiving-sending device and method

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Embodiment Construction

[0033] Such as figure 1 , figure 2 As shown, the present invention includes: a serving cylinder and a receiving cylinder, wherein the serving cylinder is provided with a cap cylinder 102, a cylinder body 108 docked with the cap cylinder 102, a welding neck flange 107 docked with the cylinder body 108, installed on the cylinder body 108 outside the protection frame 109 used to ensure the safety of its hoisting, wherein a lifting lug 101 is installed on the cap tube 102 by welding, the cap tube 102 is also provided with a detection hole 110, and a water injection tube is installed inside the cap tube 102, and the water injection tube A water injection port 103 is provided at the port of the water injection cylinder, and the water injection cylinder is divided into several water injection pipelines through several two-way valves on the pipeline of the water injection cylinder.

[0034] In this embodiment, three two-way valves (104, 105, 106) are respectively arranged on the pip...

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Abstract

A spherical pig receiving-sending device comprises a spherical pig sending barrel and a spherical pig receiving barrel which are provided with cap barrels, barrel bodies in abutting connection with the cap barrels, flanges in abutting connection with the barrel bodies and protecting frames mounted on the outer portions of the barrel bodies respectively. The cap barrels are provided with detecting holes. Water injection barrels and water outlet barrels are arranged in the cap barrels. Water injection openings and water outlets are formed in end openings of the water injection barrels and the water outlet barrels. The water injection barrels and the water outlet barrels are divided into a plurality of water injection pipelines and water outlet pipelines through a plurality of double-way valves. The spherical pig sending barrel and the spherical pig receiving barrel are arranged at the starting end and the tail end of a sea floor soft pipe respectively, and through the connection, a spherical pig receiving-sending structure is formed. According to the spherical pig receiving-sending device, by controlling the closing state of a valve, underwater spherical pigging is achieved, water injection, spherical pigging and exhausting in the sea floor soft pipe are carried out quickly, and accordingly sea floor soft pipe inner material seawater corrosion resistance and sea floor soft pipe stability are effectively achieved.

Description

technical field [0001] The invention relates to a sending and receiving device, in particular to a pigging ball sending and receiving device and a sending and receiving method used for pressure testing of underwater oil and gas pipelines. It belongs to the field of offshore oil engineering. Background technique [0002] In recent years, more and more flexible umbilicals have been applied in offshore oil fields. Compared with steel sea pipes, flexible pipes have the advantages of easy installation, good corrosion resistance, high laying efficiency, convenient transportation and recyclable reuse. Submarine hose manufacturers have carried out pigging and pressure testing on the hose before leaving the factory. After the construction contractor lays it on the seabed, in order to verify the state of the submarine hose after laying and remove the air in the submarine hose, it is still necessary to Restart the pigging work. [0003] Conventional pigging technology is generally a...

Claims

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Application Information

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IPC IPC(8): B08B9/057
CPCB08B9/057
Inventor 王勇刘书胜苗春生张印桐高原宋春娜魏行超叶永彪张牧汪智峰
Owner CHINA NAT OFFSHORE OIL CORP
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