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Real-time monitoring device for underwater pig operation based on optical fiber detection

A real-time monitoring and pigging technology, applied in the direction of cleaning equipment, measurement, wellbore/well components, etc., can solve the problem of inability to accurately judge whether to pass a specific key road section, unable to monitor the real-time position and operating status of the pipe pig, and unable to real-time Detect problems such as pig speed and position

Pending Publication Date: 2019-02-05
MEIZUAN SHENHAI ENERGY TECH RES & DEV SHANGHAI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional pigging operation is to use the pressure of the oil and gas in the oil and gas transmission pipeline to push the pig to move forward. Generally, it is impossible to detect the speed and position of the pig in real time.
When the pig is blocked, the position of the pig can only be comprehensively evaluated based on the upstream and downstream pressure, the speed of the pig, and the operating time, and it is impossible to accurately determine whether it has passed a specific key section, and it is impossible to monitor the pig real-time location and operating status of the

Method used

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  • Real-time monitoring device for underwater pig operation based on optical fiber detection
  • Real-time monitoring device for underwater pig operation based on optical fiber detection

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Embodiment Construction

[0016] Such as figure 1 , figure 2 As shown, the underwater pig operation real-time monitoring device 22 of the present invention is installed on the seabed central manifold 11 . The oil and gas produced by the oil and gas wells are collected into the subsea central manifold 11, and are transported to the offshore oil storage platform or offshore processing facility through the steel jumper 16, the pipeline terminal 12 and the subsea oil pipeline 13. The bottom of the pig operation real-time monitoring device 22 is provided with an optical fiber interface, and is connected to the optical fiber grating 21 . The fiber grating 21 surrounds and covers the surface of the jumper pipe 16 and the submarine oil pipeline 13, and is covered and fixed with a waterproof adhesive tape.

[0017] During the pigging operation, the offshore platform lifts the pig launching tube 15 into the water and connects it to the subsea manifold 11, and launches the pig 14 to start the pigging operation...

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Abstract

The invention provides a real-time monitoring device for underwater production facility pipeline pig operation of offshore oil and gas fields, which comprises optical fiber grating arranged on an oiland gas transportation pipeline, and optical fiber grating arranged on central manifold at the bottom of the sea. The size of the pig is matched with the inside diameter of the pipeline, and the pipeline wall vibrates when the pig is pushed forward by oil and gas pressure. The optical fiber grating detects the vibration signal and transmits the signal to a detection device fixed on the manifold inreal time. After signal collection and processing, the vibration signal is transmitted to an underwater control module of an oil production tree. The underwater control module is connected to a sea platform by a submarine cable; the detection device can install the optical fiber grating in the whole pipeline section of the underwater production facility and monitor the operating status information of the pig in the pigging operation section in real time. The operators on the sea surface can monitor the operating status information of the pig in pigging operation in real time through a man-machine interface.

Description

technical field [0001] The invention belongs to oil exploitation equipment, and relates to a real-time monitoring device used for pipeline pigging operations of underwater production facilities in offshore oil and gas fields. Background technique [0002] The traditional pigging operation is to use the pressure of the oil and gas in the oil and gas transmission pipeline to push the pig to move forward. Generally, it is impossible to detect the speed and position of the pig in real time. When the pig is blocked, the position of the pig can only be comprehensively evaluated based on the upstream and downstream pressure, the speed of the pig, and the operating time, and it is impossible to accurately determine whether it has passed a specific key section, and it is impossible to monitor the pig The problem of the real-time location and operation status of the controller. Contents of the invention [0003] The purpose of the present invention is to provide a real-time monitor...

Claims

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Application Information

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IPC IPC(8): E21B47/001E21B47/12E21B37/00
CPCE21B37/00E21B47/12E21B47/001
Inventor 宋小海
Owner MEIZUAN SHENHAI ENERGY TECH RES & DEV SHANGHAI CO LTD
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