Low temperature geothermal energy production technique method

A geothermal energy and technology technology, which is applied in the fields of fluid extraction, earth-moving drilling, wellbore/well components, etc., can solve the problems of no specific plan and construction technology, low utilization efficiency of geothermal energy, etc., to increase the heat storage space , Solve the effect of recharge and increase the heating area

Inactive Publication Date: 2015-06-10
王作韬
View PDF7 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the said heat storage layer is only 2000-5000 cubic meters, the water storage capacity is only 500-750 cubic meters, if calculated according to the permeability of 200-500 mD, the daily mining volume is less than 100 cubic meters, and the utilization efficien

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
  • Low temperature geothermal energy production technique method
  • Low temperature geothermal energy production technique method
  • Low temperature geothermal energy production technique method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] A technical method for low-temperature geothermal energy extraction is:

[0037] ① Well location determination: Determine the occurrence, burial depth and contact relationship of weathered fractures and formations by means of geophysical prospecting, and determine the well location, well depth, well diameter, fracturing location and connection mode; the well location is selected in sandstone, metamorphic sandstone, glutenite 1. Areas with large thickness of metamorphic glutenite and large burial depth; well depth 1000m-2500m, well diameter r≥150mm, sandstone, metamorphic sandstone, glutenite and metamorphic glutenite with formation temperature greater than T≥30℃ for the fracturing site;

[0038] ② Drilling method: use positive circulation drilling rig or positive and negative circulation drilling rig, first lower the retaining pipe in the upper ...

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 a low temperature geothermal energy production technique method, and belongs to a geothermal energy utilization technique. According to the method, fracturing and communication are performed in a heat storage stratum section through drilling, fracturing and directional drilling techniques on the premise that geological environment stability is ensured according to a geothermic gradient theory, so that subsections of a heat storage stratum are communicated in a certain depth underground, a relatively independent fluid circulation space system is formed, and the purpose of low temperature geothermal energy production is achieved in an extraction and filling combined linkage manner. The method and techniques are scientific and reasonable, the production and utilization problems of low-temperature geothermal energy in a vast underground water area are solved, the technical target that hot springs exist anywhere is achieved, geothermal energy resources are sufficiently utilized, and the geological environment is not damaged.

Description

technical field [0001] The invention belongs to geothermal energy utilization technology, and mainly relates to a low-temperature geothermal exploitation technology method. Background technique [0002] According to data from the Ministry of Land and Resources, the geothermal energy stored within 2,000 meters from the surface of the country's major sedimentary basins is equivalent to the heat of 250 billion tons of standard coal. There are 103 geothermal fields nationwide that have been formally surveyed and approved by the land department, and the submitted recoverable geothermal resources are 332.83 million cubic meters per year; 214 geothermal fields have been preliminarily evaluated. According to the current level of development and utilization, the total amount of geothermal water that can be developed and utilized in the country is about 6.845 billion cubic meters per year, which is equivalent to the calorific value of 32.848 million tons of standard coal per year. Ho...

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): E21B43/26
CPCE21B43/00E21B43/17E21B43/20E21B43/26
Inventor 祁福利王作韬
Owner 王作韬
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