Well head system for geothermal tertiary system sandstone recharge

A geothermal and sandstone technology, applied in the field of geothermal resources development and utilization engineering, can solve physical, chemical, gas blockage and other problems

Inactive Publication Date: 2005-03-02
TIANJIN UNIV
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of physical, chemical and gas clogging, the purpose of the present invention is to

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
  • Well head system for geothermal tertiary system sandstone recharge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The present invention will be further described below by means of the accompanying drawings and examples.

[0008] my country began to pay attention to Tertiary sandstone recharge in the early 1980s, and conducted experiments in geothermal wells such as Tanggu and Dagang. However, due to the unsolved blockage problem, the recharge rate will become lower and lower with time, and the recharge rate is only up to About 20-30%, some even can't recharge. Through the implementation of the present invention in the geothermal demonstration project of Huatai Agricultural Garden in Dongli District, Tianjin, the production rate is 60t / h, the recharge rate is 50t / h, and the recharge rate can reach more than 80%. Since there may be metal slag particles or sediments with large particle sizes in the production well pipeline, the use of filter elements with the same precision in the filtration process will increase the filtration load and increase operating costs. Therefore, for this em...

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 concretely relates to reinjection technique of geothermal well of geothermal resource exploitation and utilization engineering can be used in geothermy tertiary sandstone reinjection collar system mainly use two-staged coarse filter group4 reinjection system linked in series of coarse filter group and secondary filter group with parallel connection, pressurizing reinjection pump and enforced exhaust tank geothermic fluid flows into the first stage of coarse filter group with filtration accuracy of 50 to 80mum, then the second stage of secondary filter group with filtration accuracy of 3to5mum, the filter element material is the third generation polyethylene sintered filter element or filtration bag, after two filtration stages water quality can be guaranteed basically. The invention can prevent air resistance caused by physical, microbe, chemical factors, increase microbe higher than 30%. The system is installed and adjusted conveniently, maintained simple, its monitoring method complete, although it is aimed at sandstone formation, it can also be adopted for other layer like and can exploit and utilize tertiary geothermal resource reasonably.

Description

technical field [0001] The geothermal resources development and utilization project of the invention specifically relates to the recharge technology of geothermal wells. Background technique [0002] At present, the development and utilization of geothermal resources has formed a relatively mature industry, especially the utilization of geothermal heating and water resources, which has greatly stimulated the development of related industries. The development targets of geothermal resources are mainly concentrated in Wumishan Formation and Tertiary sandstone thermal reservoirs. However, due to the characteristics of sandstone thermal reservoir rocks, during the recharge process, due to the mass transfer between the dissolution of unsaturated minerals and the formation of secondary minerals at a given temperature, as well as the dissolution and precipitation of minerals as the temperature increases, the sandstone thermal reservoir There are great...

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): E21B43/34F24J3/08
CPCY02E10/10
Inventor 朱家玲蔡建新李春华王学芬李连举
Owner TIANJIN UNIV
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