Natural gas hydrate dissociation gas release rate calculation method and apparatus

A technology of hydrate decomposition and gas release, which is applied in computing, special data processing applications, instruments, etc., and can solve the problem of few researches on hydrate decomposition.

Active Publication Date: 2016-03-23
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

At present, there are few domestic and foreign studies on the decomposition mechanism of hydrates in multiphase mixed transportation systems. There are very few studies on hydrate decomposition in the system

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  • Natural gas hydrate dissociation gas release rate calculation method and apparatus
  • Natural gas hydrate dissociation gas release rate calculation method and apparatus
  • Natural gas hydrate dissociation gas release rate calculation method and apparatus

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0027] Please refer to figure 1 As shown, the present invention specifically provides a method for calculating the gas release rate of natural gas hydrate decomposition. The method includes: S101, according to the relevant theoretical basis of hydrate decomposition, establish a hydrate slurry decomposition kinetic model and fit the hydrate decomposition model Corresponding parameter values; S102 performs phase flash evaporation according to the natural gas components to calculate and obtain natural gas related parameters; S103 obtains the amount of natural gas hydrat...

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Abstract

The invention provides a natural gas hydrate dissociation gas release rate calculation method and apparatus. The method comprises: according to a hydrate dissociation related theory basis, establishing a hydrate slurry dissociation kinetic model and fitting values of related parameters in the hydrate dissociation model; according to natural gas components, performing phase-state flash evaporation and performing calculation to obtain natural gas related parameters; obtaining an amount of substances of natural gas hydrate during initial natural gas hydrate dissociation and real-time temperature and pressure data after a dissociation reaction is performed; and according to the hydrate slurry dissociation kinetic model, the values of the related parameters in the hydrate dissociation model, the natural gas related physical parameters, the amount of the substances of the natural gas hydrate during the initial natural gas hydrate dissociation and the real-time temperature and pressure data after the dissociation reaction is performed, obtaining a natural gas hydrate dissociation gas release rate. The calculation method and apparatus are mainly applied to the aspects of natural gas hydrate mineral development, flow assurance of removal of natural gas hydrate freezing and plugging, natural gas hydrate storage and transport technology, hydrate separation and the like.

Description

technical field [0001] The invention relates to the field of fluid calculation, in particular to a calculation method and device for calculating the gas release rate of natural gas hydrate decomposition, which can realize the prediction of the gas release rate of natural gas hydrate, and is mainly used in the development of natural gas hydrate deposits and flow guarantee, natural gas Removal of hydrate freeze blockage, natural gas hydrate storage and transportation technology, and hydrate separation. Background technique [0002] With the development of the petroleum industry, fields such as drilling, oil extraction, and oil and gas transportation extend to the deep sea. In the offshore oil industry, after oil and gas are extracted from the seabed, they are transported from the wellhead to FPSO, offshore platform or land for post-processing through pipelines. Most of the media transported by submarine pipelines, especially submarine gathering and transportation pipelines, h...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 史博会吕晓方宋尚飞宫敬
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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