Sea-region natural gas hydrate seabed methane monitoring system and method

A monitoring system, a technology for natural gas, applied in geophysical measurements, measurement devices, and analysis of fluids using sonic/ultrasonic/infrasonic waves, etc., can solve problems such as inaccurate monitoring of seawater methane, and achieve the effect of avoiding measurement errors

Active Publication Date: 2018-02-09
ZHONGTIAN TECH MARINE SYST CO LTD
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Problems solved by technology

[0009] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a sea area natural gas hydrate seabed methane monitoring system and method, which can solve the problem of inaccurate monitoring of seawater methane

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  • Sea-region natural gas hydrate seabed methane monitoring system and method
  • Sea-region natural gas hydrate seabed methane monitoring system and method

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[0026] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments: the mining platform or monitoring vessel can be used to set up a monitoring platform, connect with all submarine submerged marks 111 using underwater acoustic communication technology, and receive all monitoring data of the submarine submerged marks 111. A production well site 101 is set in the seabed mining area, and one or more test production well sites 102 are set equidistant from the production well site 101 for test production of natural gas hydrate.

[0027] Two circles with unequal radii are set with the production well location 101 as the center, namely the first monitoring circle 110 and the second monitoring circle 120 . The radius settings of the first monitoring circle 110 and the second monitoring circle 120 need to be set after analysis according to specific conditions in actual work. And preferably, the radius of the first monito...

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Abstract

The invention discloses a sea-region natural gas hydrate seabed methane monitoring system and a method. A mining well position is taken as a center and pilot production well positions are arranged inan equidistance mode. The mining well position is taken as the center and a first monitoring circle and a second monitoring circle are arranged. The first monitoring circle and the second monitoring circle are provided with multiple groups of seabed subsurface buoys used for monitoring a seabed methane concentration so as to form a seabed methane data matrix. The system and the method have advantages that bottom-supported seabed subsurface buoys are used to make up disadvantages in the prior art; through a underwater control technology, physical and chemical sensors capable of measuring a plurality of parameters are integrated together; long-period in-situ observation is performed on a seabed environment of a seabed boundary of a seabed natural gas hydrate reservoir forming area so that ameasurement error which may be caused by an existing method is avoided; and through a underwater acoustic communication technology, a seabed environment parameter is transmitted to a sea surface monitoring platform, real-time seabed methane leakage monitoring is provided for hydrate mining and an important meaning is possessed.

Description

technical field [0001] The invention relates to a marine monitoring system, in particular to a sea area natural gas hydrate submarine methane monitoring system. [0002] The invention also relates to a marine monitoring method, in particular to a sea-area natural gas hydrate seabed methane monitoring method. Background technique [0003] Gas hydrate is a solid substance formed by combining gases such as methane, ethane, and carbon dioxide with water molecules under high-pressure and low-temperature environments. It mainly exists in land permafrost and marine sediments with a water depth of more than 300m. The total amount of carbon contained in the global natural gas hydrate is equivalent to twice that of the known carbon reserves of coal, oil and natural gas, and when completely burned, only almost pollution-free carbon dioxide and water are produced. It is one of the most promising new green energy sources in the future. [0004] However, natural gas hydrate also has a st...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01N29/02G01D21/02
CPCG01D21/02G01N29/02G01V1/00
Inventor 董一飞梁前勇杨江平钟超
Owner ZHONGTIAN TECH MARINE SYST CO LTD
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