Natural gas hydrate occurrence type simulated exploitation experimental system

A technology for simulating mining and experimental systems, applied in the field of basic hydrate research to prevent sand clogging and ensure smooth progress

Active Publication Date: 2017-12-01
DALIAN UNIV OF TECH
View PDF6 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, gas hydrate depressurization recovery technology has both prospects and challenges

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
  • Natural gas hydrate occurrence type simulated exploitation experimental system
  • Natural gas hydrate occurrence type simulated exploitation experimental system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The specific implementation manner of the present invention will be described in detail below in combination with the technical scheme and accompanying drawings.

[0019] figure 1 Shown is the schematic diagram of the gas hydrate depressurization recovery experimental system.

[0020] (1) Sand filling process: Construct Class1 reservoir type skeleton: First, calculate the mass of sand and water required for a fully water-saturated layer at a certain height according to the porosity and density of the sand, and measure the sand and deionization required for the calculation Water, then put it into the reactor and mix evenly, place a layer of air-permeable and water-blocking film AA on the metal support of this layer, this layer is a completely water-saturated layer; then put a certain quality of dry sand into the reactor and pave it , but this layer does not need to add water, then place a layer of air-permeable and water-resistant film BB on the metal support layer, thi...

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of hydrate fundamental researches and relates to a natural gas hydrate occurrence type simulated exploitation experimental system. The system comprises a reaction still, a gas-liquid collection system and a data collection system. Natural gas hydrates are generated in the reaction still firstly, then pressure is reduced by regulating a back pressure regulating valve, the balance condition of the natural gas hydrates is destroyed, and the natural gas hydrates are decomposed. Through three different types including sand filling, water and permeable water resistance film, simulation of natural gas storage is achieved; an interior exploring well has three segments totally and is used for studying exploration characteristics of different depths of the exploring well; a screen mesh is used for conducting secondary sand prevention in the exploring well, sand blocking is prevented, and it is more effectively guaranteed that experiments are conducted smoothly; silica gel is put in a gas-liquid separator in a gas-liquid collection device and prevents the water from entering a bumper, the gas-liquid separator is arranged on a balance, a pressure gauge is connected to the bumper, the pressure gauge and the balance are both connected with the data collection system, and thus the gas-liquid explored condition in the exploration process can be collected in real time.

Description

technical field [0001] The invention belongs to the technical field of hydrate basic research, and relates to an experimental system for simulating exploitation of natural gas hydrate occurrence types. Background technique [0002] Natural gas hydrate is an ice-like crystalline substance composed of natural gas and water. Natural gas (such as methane, ethane, propane, and carbon dioxide, etc.) is bound as a guest molecule in a cage structure formed by water molecules connected by hydrogen bonds. Gas hydrates need to be stable under high pressure and low temperature conditions. Due to their special stability conditions, gas hydrate deposits are mainly distributed on oceanic continental shelves and permafrost. The occurrence types of natural gas hydrate deposits are mainly divided into three types, among which: Class1 is divided into two regions: the upper layer is a low-permeability hydrate area, and the lower layer is a two-phase flow area with free gas movement, for example...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B47/07
CPCE21B43/00E21B47/07
Inventor 宋永臣高祎杨明军刘卫国赵佳飞
Owner DALIAN UNIV OF TECH
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap