An underwater umbilical cable with the ability of temperature measurement and vibration measurement and three-dimensional shape reshaping

A three-dimensional shape and umbilical cable technology, which is applied in the measurement of force, measurement of the change in optical properties of the material when it is stressed, and thermometers, etc., can solve problems such as short circuits, gnawing umbilical cables, and aging of umbilical cables

Active Publication Date: 2022-07-26
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in the process of long-term use, due to the corrosion of seawater, the umbilical cable will gradually age, and if it is not remedied in time, it may lead to serious consequences of short circuit
And there are a lot of fish on the bottom of the sea, there is a risk of gnawing on the umbilical cable

Method used

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  • An underwater umbilical cable with the ability of temperature measurement and vibration measurement and three-dimensional shape reshaping
  • An underwater umbilical cable with the ability of temperature measurement and vibration measurement and three-dimensional shape reshaping

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Experimental program
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Effect test

Embodiment 1

[0034] figure 1 It is a schematic structural diagram of the underwater umbilical cable with the capability of temperature measurement and vibration measurement and three-dimensional shape reshaping according to an embodiment of the present invention. The underwater umbilical cable is used to connect underwater equipment and water equipment; the underwater umbilical cable includes outer sheath, armored steel wire, inner sheath, cable, communication optical cable, steel pipe, three stress-measuring optical fibers, and three temperature-measuring variable cables. Optical fiber, distributed optical fiber strain demodulator, distributed optical fiber temperature demodulator and processor; the cable is used to provide the working voltage required for the normal operation of underwater equipment; the communication optical cable is used to establish underwater equipment and water equipment communication link between.

[0035] The outer sheath is concentrically sleeved on the outer s...

Embodiment 2

[0044] The embodiment of the present invention proposes a working method of the aforementioned underwater umbilical cable with the capability of temperature measurement and vibration measurement and three-dimensional shape reshaping, including the following steps:

[0045] S1, select the umbilical cable of the corresponding length according to the seawater depth. For example, an umbilical cable with a length of 300m is selected, and the length of the built-in cable, communication optical cable, stress-measuring optical fiber and temperature-measuring optical fiber is also 300m. The wavelength of the laser used is 1550nm, the pulse width is 32ns, and the pump current is 500mA; the distributed optical fiber strain demodulator can use BOTDA or φ-OTDR.

[0046] S2, connect the upper production control module and the lower production equipment with an umbilical cable, wherein the optical fiber is connected with a flange; the cable is connected with industrial electricity.

[0047]...

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Abstract

The invention discloses an underwater umbilical cable with the capability of temperature measurement and vibration measurement and three-dimensional shape reshaping, which is characterized in that the underwater umbilical cable is used for connecting underwater equipment and water equipment; Outer sheath, armored steel wire, inner sheath, cable, communication optical cable, steel pipe, three stress-measuring optical fibers, three temperature-variable optical fibers, distributed optical fiber strain demodulator, distributed optical fiber temperature demodulator and processor. The invention can collect the operation state data of the umbilical cable for a long time, the collected data has strong objectivity, can truly reflect the real-time operation state of the umbilical cable, and has an important guarantee function for the long-term submarine petroleum gas exploitation.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to an underwater umbilical cable with the capability of temperature measurement and vibration measurement and three-dimensional shape reshaping. Background technique [0002] In deep-sea oil and gas development, underwater production systems are widely used because of their adaptability to various floating platforms and related sea conditions, efficient and economical exploitation methods, and relatively mature technologies. The underwater production system installs production equipment such as Christmas trees on the seabed. It is a development and production mode that can effectively improve production reliability and save platform maintenance costs. It is mainly composed of subsea production equipment, upper control module, and umbilical cable. [0003] Subsea production system is the main development mode of deepwater oil and gas fields. As the "lifeline" connectin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/24G01K11/322
CPCG01L1/242G01K11/322G02B6/4427H01B7/324H01B7/045G02B6/506G02B6/4432G01K11/32H01B11/22
Inventor 张益昕熊菲陈龙张旭苹王顺陈晓红张驰王峰
Owner NANJING UNIV
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