Simulated experiment testing method of gas hydrate in porous medium

A gas hydrate and simulation experiment technology, applied in the field of oil and gas exploration, can solve the problems of joint (fusion) processing of measurement data that cannot be used by sensors, without considering the combination of electrical sensors and acoustic sensors, and ignoring capacitive reactance information. and waveform can be adjusted flexibly, the sensor coverage is wide, and the information rich effect

Active Publication Date: 2016-02-17
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
View PDF4 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with the application number 2013102252657 announced "Experimental device and method for dynamic triaxial mechanical-acoustic-electrical simultaneous testing of natural gas hydrate deposits", but its testing system and method have the following characteristics: traditional resistivity testing technology is used, That is, only the resistance information of the measured medium is obtained and the capacitive reactance information is ignored; only a pair of electrodes is used as t

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Simulated experiment testing method of gas hydrate in porous medium
  • Simulated experiment testing method of gas hydrate in porous medium
  • Simulated experiment testing method of gas hydrate in porous medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] The gas hydrate simulation experiment test method in porous media of the present invention mainly includes two parts: the step of obtaining experimental and measurement data and the step of analyzing and processing the measurement signal;

[0129] Among them, the steps of experiment and measurement data acquisition include:

[0130] 1) Fill the porous medium into the reactor;

[0131] 2) Inject water and methane gas into the reactor to fully dissolve the methane gas in the water;

[0132] 3) Put the reaction kettle in the incubator, set the temperature of the incubator to a certain lower temperature so that the gas hydrate can be generated, turn on the measurement and control software and hardware interface equipment, and perform data collection and display;

[0133] 4) Gradually increase the temperature of the incubator at a certain temperature interval to decompose the gas hydrate. After each temperature setting, wait for the temperature and pressure in the reactor t...

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

PropertyMeasurementUnit
Amplitudeaaaaaaaaaa
Sampling rateaaaaaaaaaa
Login to view more

Abstract

The invention discloses a simulated experiment testing method of gas hydrate in a porous medium. The method mainly comprises an experimental and measured data acquiring step and a measured signal analysis processing step, and specifically comprises generating the gas hydrate in the porous medium in a reaction vessel, increasing temperature step by step, decomposing the gas hydrate, acquiring the temperature, the pressure, and the electric and acoustic signals of different test points in a decomposition process, computing the saturation of the gas hydrate according to the temperature and the pressure, and establishing gas hydrate saturation models based on acoustic characteristics, electric characteristics, and acoustoelectric fusion characteristics respectively. The acoustoelectric combined test method achieves safe and radiation-free signals and low system interference, provides an effective detection technical means for the research of the dynamics law of a natural gas hydrate generation/decomposition process and a spatial distribution state change rule of phase materials in the porous medium, and provides a theoretical base for development of new logging technology.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration, in particular to an exploration technology of natural gas hydrate reservoirs, in particular to a gas hydrate simulation test method in porous media. Background technique [0002] Gas hydrate is an energy resource with great potential, mainly distributed in land permafrost and seabed sediments on the edge of the continental shelf. It has the characteristics of wide distribution, large reserves, high energy density, and cleanness. The exploration and development of resources has attracted extensive attention from all over the world. [0003] Gas hydrate reservoirs are a special type of reservoirs. At present, their evaluation mainly follows oil and gas evaluation theories and methods, that is, gas hydrates are treated as fluids. In fact, natural gas hydrate exists in solid form, and its physical and chemical properties, occurrence state, and accumulation mode are quite different fr...

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
no application Login to view more
IPC IPC(8): G01V11/00G01V13/00G01N33/24
CPCG01N33/241G01V11/00G01V13/00Y02A90/30
Inventor 邢兰昌陈强刘昌岭耿艳峰华陈权祁雨
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products