Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oil shale in-place destructive distillation mining method and simulated experiment system thereof

A mining method and simulation experiment technology, applied in the direction of production fluid, earthwork drilling, measurement, etc., can solve the problems of low shale oil recovery rate, low accelerated heat transfer rate, etc., to improve fracture development and permeability, improve The effect of recovery factor and heat transfer rate improvement

Active Publication Date: 2012-05-23
PETROCHINA CO LTD
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the problems of low accelerated heat transfer rate and low recovery rate of shale oil in the existing technology of in-situ retort distillation, the embodiment of the present invention provides an in-situ retort distillation method for oil shale and its simulation experiment system

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
  • Oil shale in-place destructive distillation mining method and simulated experiment system thereof
  • Oil shale in-place destructive distillation mining method and simulated experiment system thereof
  • Oil shale in-place destructive distillation mining method and simulated experiment system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 , the embodiment of the present invention provides an oil shale dry distillation mining method in situ, according to the following steps,

[0037] Step 1, creating fractures in the shale layer, specifically, the present invention uses the fracturing technology in crude oil exploitation to create rock formation cracks 26 in the shale layer, so as to improve the fracture development and permeability of the shale layer;

[0038] Step 2, performing direct conduction heating on the oil shale, and simultaneously injecting gas into the direct conduction heating area.

[0039] Specifically, in this example, the electric heating rod 4 is used to conduct direct conduction heating to the oil shale, and at the same time, carbon dioxide 24 is passed into the vicinity of the heating well 27 to assist in convective heating, and the heat near the heating pipe is carried to the Far and deep oil shale layer 25, thereby improving the efficiency of heat conduction of oil shal...

Embodiment 2

[0041] Such as figure 2 As shown, the embodiment of the present invention also provides a simulation experiment system applied to the mining method, the system includes a heating device 100 and a measuring device 200 connected to the heating device 100, a gas injection device 300, a computer 400 and the control device 500. Wherein, the heating device 100 is used for heating the oil shale and deriving the pyrolysis product of the oil shale, and the measuring device 200 is used for condensation, collection and measurement of the pyrolysis product of the oil shale, so The gas injection device 300 is used to provide gas, the computer 400 is used to analyze data, and the control device 500 is used to control the heating temperature of the heating device 100 .

[0042] Specifically, the computer 400 includes computer data processing software and data input and output devices (such as a keyboard).

[0043] Specifically, such as image 3 As shown, the heating device includes a cyl...

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 discloses an oil shale in-place destructive distillation mining method and a simulated experiment system thereof, belonging to the field of oil shale mining. According to the oil shale in-place destructive distillation mining method, fracture creation is carried out on a shale layer, thus fracture development and permeability of the shale layer are improved, the oil shale layer is directly subjected to conduction heating, gas is introduced into a heating region to form direct convection heating, thus heat transfer rate can be effectively increased, and recovery ratio of shale oil is increased. The simulated experiment system comprises a heating device, a gas injection device, a measurement device, a computer and a control device. According to the simulated experiment system, the heating device and the gas injecting device complete direct conduction of heat in a process of heating the oil shale and convection conduction of the gas, thus the experiment system can carry out heat conduction rule and shale oil mining condition under different temperatures and pressures when carbon dioxide is injected into oil shale in different regions for assisting electric heating, and provide parameters and development conceptions for a process of injecting gas for assisting electric heating in different regions.

Description

technical field [0001] The invention relates to oil shale mining, in particular to an oil shale on-site dry distillation mining method and a simulation experiment system thereof. Background technique [0002] Oil shale is mostly deposited deep underground, and becomes oil shale layer through physical and chemical effects such as diagenesis and volatile matter loss, and shale oil can be obtained from oil shale by means of low-temperature dry distillation. [0003] At present, there are two main methods of oil shale development: surface dry distillation and in-situ dry distillation. [0004] Ground dry distillation means that oil shale is mined in the open pit or underground, transported to the ground, crushed and screened to the required particle size or block size, and heated in a dry distillation furnace to produce shale oil and gas, semi-coke or shale ash. [0005] In-situ dry distillation means that the oil shale buried in the ground is directly heated in the ground with...

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): E21B43/241E21B43/26E21B43/34E21B47/00
Inventor 郑德温薛华庆方朝合王红岩刘洪林葛稚新李小龙姚建军
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com