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Underwater umbilical cable with temperature and vibration measurement and three-dimensional shape remodeling capabilities

A three-dimensional shape, umbilical technology, applied in the measurement of force, force measurement by measuring the change of optical properties of materials when they are stressed, thermometers, etc., can solve problems such as gnawing of umbilicals, short circuits, and aging of umbilicals

Active Publication Date: 2022-02-25
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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  • Underwater umbilical cable with temperature and vibration measurement and three-dimensional shape remodeling capabilities
  • Underwater umbilical cable with temperature and vibration measurement and three-dimensional shape remodeling capabilities

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Embodiment 1

[0034] figure 1 It is a structural schematic diagram of an underwater umbilical cable capable of temperature measurement, vibration measurement and three-dimensional shape remodeling according to an embodiment of the present invention. The underwater umbilical cable is used to connect underwater equipment and above-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, three temperature-measuring optical fibers Optical fiber, distributed optical fiber strain interrogator, distributed optical fiber temperature interrogator 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 sheathed concentrically on the outer side of the i...

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, 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, if an umbilical cable with a length of 300m is selected, the length of the built-in cable, communication optical cable, stress measurement optical fiber and temperature measurement optical fiber is also 300m. The wavelength of the laser used is 1550nm, the pulse width is 32ns, and the pumping current is 500mA; the distributed optical fiber strain interrogator can use BOTDA or φ-OTDR.

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

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Abstract

The invention discloses an underwater umbilical cable with temperature and vibration measurement and three-dimensional shape remodeling capabilities, the underwater umbilical cable is characterized in that the underwater umbilical cable is used for connecting underwater equipment and water equipment, the underwater umbilical cable comprises an outer sheath, an armored steel wire, an inner sheath, a cable, a communication optical cable, a steel pipe, three stress measurement optical fibers, three temperature change measurement optical fibers, a distributed optical fiber strain demodulator, a distributed optical fiber temperature demodulator and a processor. The operation state data of the umbilical cable can be collected for a long time, the collected data are high in objectivity, the real-time operation state of the umbilical cable can be truly reflected, and the umbilical cable has an important guarantee effect on long-term seabed petroleum gas exploitation work.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to an underwater umbilical cable capable of temperature measurement, vibration measurement and three-dimensional shape remodeling. 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, high efficiency and economy of exploitation methods, and relatively mature technologies. The subsea production system installs production equipment such as Christmas trees on the seabed. It is a development and production model that can effectively improve production reliability and save platform maintenance costs. It is mainly composed of subsea production equipment, upper control modules, and umbilical cables. [0003] The subsea production system is the main development mode of deepwater oil and gas fields. As the "lifeline" connecting the...

Claims

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Application Information

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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