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System and method for monitoring and managing transportation of natural gas hydrate slurry

A hydrate slurry and management system technology, applied in the pipeline system, gas/liquid distribution and storage, electrical digital data processing, etc., can solve problems such as riser hazards, annular pipeline blockage, etc., and achieve increased reliability and timely monitoring Analysis and Effects of Industrial Management

Active Publication Date: 2019-05-07
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The rapid release and diffusion of natural gas causes the flow rate ratio of the separated phases flowing through the pipeline, the pipe section ratio occupied by the separated phases, and the two-phase interface to change continuously, causing the change and vortex of the flow state of the multiphase flow; at the same time, the slurry hydration The accumulation of debris in the wellbore or pipeline will also block the annulus pipeline, bringing new hazards to submarine pipeline transportation, drilling technology, well control, riser design, etc.

Method used

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  • System and method for monitoring and managing transportation of natural gas hydrate slurry
  • System and method for monitoring and managing transportation of natural gas hydrate slurry
  • System and method for monitoring and managing transportation of natural gas hydrate slurry

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Embodiment 1

[0061] This embodiment provides a monitoring and management system for the transportation of natural gas hydrate slurry. The main functions of the system are as follows: firstly, the physical property representation, flow characteristic index and calculation formula of the hydrate slurry state parameters are obtained; The second is to analyze the flow pattern change law of hydrate slurry with phase change, and derive the multiphase flow model of hydrate slurry with phase change; the third is to realize the natural gas hydration Steady-state simulation of slurry transport.

[0062] Such as figure 1 As shown, the monitoring and management system for natural gas hydrate slurry transportation in this embodiment includes a first establishment module 1, a first calculation module 2, a test module 3, a first acquisition module 4, a second establishment module 5, a second Calculation module 6, judgment module 7, the third building module 8, steady-state simulation module 9 and monito...

Embodiment 2

[0089] Such as image 3 As shown, this embodiment provides a method for monitoring and managing natural gas hydrate slurry transportation, the method comprising the following steps:

[0090] S101. Establishing seawater and seabed stratum models.

[0091] S102. Calculating the unsteady state heat transfer value of the seabed formation.

[0092] S103, testing the viscosity of the natural gas hydrate slurry.

[0093] S104. Based on the viscosity test of the natural gas hydrate slurry, obtain flow characteristic parameters of the natural gas hydrate slurry.

[0094] S105. Establish a multiphase flow model of gas hydrate slurry with phase change according to the seawater and seabed formation model, the unsteady heat transfer value of the seabed formation, and the flow characteristic parameters of the gas hydrate slurry.

[0095] S106. Calculate the phase equilibrium parameters of the natural gas hydrate slurry.

[0096] S107. According to the multiphase flow model of the gas hydr...

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Abstract

The invention discloses a system and a method for monitoring and managing the transportation of the natural gas hydrate slurry. The system comprises a first establishing module, a first calculating module, a test module, a first obtaining module, a second establishing module, a second calculating module, a judging module, a third establishment module, a steady-state simulation module and a monitoring and management module. The method can meet the requirements of diversified types and intelligent management of the natural gas hydrate, and provides decision information for safety evaluation andoperation optimization of transportation; the problem that the pipeline is blocked due to the fact that the natural gas hydrate is generated in the pipeline in the development process of the marine oil gas can be relieved, the problem of flowing and phase change of the natural gas hydrate slurry can be solved, the low-cost development of deep sea oil and gas fields is realized, and the construction of a novel energy industrial structure is promoted.

Description

technical field [0001] The invention relates to a monitoring and management system and method for natural gas hydrate slurry transportation, belonging to the technical field of steady-state simulation. Background technique [0002] Natural Gas Hydrate (NGH) is also called combustible ice. One cubic meter of combustible ice can be converted into 164 cubic meters of natural gas and 0.8 cubic meters of water. Natural gas hydrate not only has the characteristics of convenient use, high combustion value, clean and pollution-free, but also facilitates transportation and storage, and is an important potential resource. Weng Shilie, an academician of the Chinese Academy of Engineering, pointed out at the World Energy Trends Forum: After 2050, there will be four major energy alternatives in the world, and natural gas hydrate ranks second. The development and research of gas hydrate is imperative. At the same time, with the deepening of offshore oil and gas development, the problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/00F17D3/01G06F17/50
Inventor 王海蓉
Owner SUN YAT SEN UNIV
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