Deep-thin layer natural alkali, salt and saltpeter well-to-well multi-layer connection exploitation process

A trona, thin-layer technology, applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc., to achieve good economic and social benefits

Inactive Publication Date: 2009-07-08
桐柏安棚碱矿有限责任公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve this mining problem, the present invention summarizes the production experience over the years and the actual mining situation of Anpeng Alkaline Mine, and comprehensiv...

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
  • Deep-thin layer natural alkali, salt and saltpeter well-to-well multi-layer connection exploitation process
  • Deep-thin layer natural alkali, salt and saltpeter well-to-well multi-layer connection exploitation process

Examples

Experimental program
Comparison scheme
Effect test

example

[0026] Example: For a pair of wells with a depth of about 2500 meters and a well spacing of 425 meters, the water injection wells are drilled first. After the stratum direction is basically determined and the principal stress direction is determined, single fracturing and fracture direction determination are started, and then normal production construction begins. groove. According to the formation trend and principal stress direction, the location of the brine extraction well is determined. After the completion of brine extraction wells, production and construction of tanks began.

[0027] The operating index for production tank construction is; water injection for 6 hours (the water injection volume is ∽40m 3 / h, pressure ∽30MPa), boring well for 4 hours (water injection ∽0m 3 / h, pressure ∽20MPa or so), circulating water return for 2 hours (return water volume is 40-100m 3 / h, pressure 12-20MPa), such reciprocating cycle of fracturing and pressure relief, the two wells w...

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 process for the communicated multi-bed exploitation of deep thin-bed natural alkali, salt and saltpeter cross wells which are buried more deeply and have thinner ore beds. The process is characterized in that the well distance is enlarged to be about between 400 and 500 meters by using the stratum cracks and vertical cracks at a depth of more than 1,200 meters underground, the characteristics that the vertical cracks extend in different directions, but the main crack direction extends longer, and techniques for detecting trend, ground stress and crack direction of the ore beds, and the wells can be communicated within a proper time period so as to prolong the service life of brine wells and improve the economy of the brine exploitation. Meanwhile, natural alkali beds on both sides of each crack can effectively contact with and be dissolved in injecting miscellaneous water by making use of the characteristics that the water solubility of dunn bass and top bottom plates of the alkali ore beds is much smaller than that of the alkali bed, and the ore beds and the top bottom plates can be cracked by multiple fractures so as to furthest make use of natural alkali resources. The deep-thin bed natural alkali, salt and saltpeter which are buried more deeply and have thinner ore beds can be explored by using the process, and favorable economic benefit and social benefit can be obtained.

Description

Technical field [0001] The invention relates to the technical field of trona, salt and nitrate mining which are deeply buried, and in particular to a multi-layer connected mining process for deeply thin layers of trona, salt and nitrate wells. Background technique [0002] The mining technology of soluble natural salt, alkali and nitrate buried in the ground has been studied for many years, and many important achievements have been obtained. The currently prevailing method is: when the burial is relatively shallow, mechanical dry mining technology is adopted, and the ore is dug out mechanically and then dissolved to produce the required products (such as the Green River alkali mine in the United States); when the burial is deep and the ore layer is thick , the horizontal well technology can be used to connect the two wells (currently the method of most wells in domestic salt mines), so as to achieve the purpose of economical and effective mining; , because the ore seam is t...

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): E21B43/28E21B43/26
Inventor 齐铁新任保祥董峰任钱云刘九喜王上行张少宇张健
Owner 桐柏安棚碱矿有限责任公司
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