Multivariable-condition seabed shallow-layer gas seepage simulating method
A simulation method and technology of shallow gas, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of seabed shallow gas leakage simulation, and achieve the effect of simple and reliable simulation method and accurate simulation results
Active Publication Date: 2019-04-19
GUANGZHOU MARINE GEOLOGICAL SURVEY
View PDF12 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0010] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for simulating shallow seabed gas seepage under multivariable conditions, which can solve the problem of simulating seabed shallow gas seepage
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:
[0038] Such as figure 1 As shown, a method for simulating shallow seabed gas leakage under multivariate conditions includes the following steps:
[0039] Step 1: Each layer of simulation chambers inside the water tank 3 is covered with quartz sand, and the particle size of the quartz sand in each layer of simulation chambers increases sequentially from top to bottom, that is, the particle size of the quartz sand in the uppermost simulation chamber is the smallest , the particle size of the quartz sand in the simulation chamber of the lowest layer is the largest, but the particle size of the quartz sand inside each layer is the same;
[0040] Step 2: The water in the reservoir 10 is sprayed from the water injection nozzle 2 after passing through the water injection pipe 4, and injected into the water tank 3, and the water passes through the simulation c...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a multivariable-condition seabed shallow-layer gas seepage simulating method which comprises the following steps of 1, laying quartz sands in each-layer simulating chamber ina water chamber, wherein the particle sizes of the quartz sands gradually increase from top to bottom; 2, injecting water in a reservoir into the water chamber and make water penetrate into the quartzsand; 3, making simulating gas seep into the quartz sand, upwards conveying the simulating gas and entering into water, and finally escaping from water; 4, collecting the simulating gas escaped fromwater by a gas collecting cover and conveying into a gas collecting tank for storage; 5, through a simulating gas reconstruction function which causes deformation to topmost quartz sand, recording a quartz sand deformation process and measuring deformation data of the quartz sand; and 6, continuously recording a quartz sand deformation processing and measuring deformation data of the quartz sand until the experiment is over. According to the method of the invention, an ocean seabed environment is simulated through laying the quartz sand; and methane is used as the simulating gas, thereby realizing the convenient and reliable simulating method and higher accuracy of the simulating result.
Description
technical field [0001] The invention relates to the technical field of shallow gas simulation devices, in particular to a method for simulating seabed shallow gas seepage under multivariable conditions. Background technique [0002] Shallow gas refers to all kinds of natural gas resources with relatively shallow burial depth (generally within 1500m) and relatively small reserves. Therefore, shallow gas exists in many seabeds, and shallow gas may be the biogenesis of shallow biological processes. It may also be the thermogenic gas that the deep gas enters the shallow layer along the migration channel, or the gas released by the decomposition of the hydrate accumulated in the shallow layer due to the change of temperature and pressure conditions. [0003] The geological conditions of the shallow seabed are unstable, and shallow gas usually migrates to the seabed in the form of diffusion or leakage, which will cause changes in the topography of the shallow seabed. Due to the c...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01N33/22
CPCG01N33/225
Inventor 黄伟梁金强陆敬安尚久靖张伟赖洪飞郭依群林霖徐梦婕杨承志孟苗苗单晨晨
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY