Salt-cavern gas storage twin-well building method

A technology for gas storage and salt caverns, which is applied in earthwork drilling, mining equipment, mining equipment, etc. It can solve problems such as thick interlayers in salt layers, high-grade salt rocks, difficult problems, etc., so as to increase the speed of cavity building and increase the The effect of dissolution volume and increasing water injection displacement

Active Publication Date: 2014-06-11
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF5 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, foreign countries build reservoirs for salt mounds. Compared with domestic stratified salt reservoirs, the salt rocks are of high grade, thi...

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
  • Salt-cavern gas storage twin-well building method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Please refer to figure 1 , the salt cavern gas storage double well construction method of the present invention comprises the following steps:

[0021] The first step S1: Drill the first well and the second well respectively, and the horizontal distance between the centerlines of the first well and the second well is 15m-30m. In this embodiment, the first well and the second well are two open vertical wells.

[0022] Preferably, in this embodiment, the inclination angles of the first well and the second well are both less than or equal to 1.3 degrees to 1.5 degrees, and the maximum full angle change rate does not exceed 1.25 degrees / 25m; the boreholes of the first well and the second well The horizontal displacement of any poi...

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 salt-cavern gas storage twin-well building method, and belongs to the technical field of technology for building salt-cavern gas storages. The salt-cavern gas storage twin-well building method comprises the steps of: first, respectively drilling a first well and a second well, wherein the distance between the center lines of the first and second wells is 15m-30m; second, communicating the first and second wells through a natural dissolution method, and circularly building cavities for the first and second wells; third, injecting gas into the first well, discharging brine water from the second well; fourth, performing gas injection and recovery to the first or second well, or simultaneously performing gas injection and recovery to the first and second wells. According to the salt-cavern gas storage twin-well building method, respectively through injecting water into the first well and discharging brine water from the second well, the water injection volume is increased, the cavity building speed is enhanced, and the storage building period is shortened; respectively performing solution mining to the cavities of first and second wells by a single well convection method, the storage is built by fully utilizing salt beds, the dissolution volume of the cavity is enlarged, the cavity form and stability are ensured, and thus the gas storage is ensured to operate safely.

Description

technical field [0001] The invention relates to the technical field of salt-cavern underground gas storage construction, in particular to a double-well construction method for a salt-cavern gas storage. Background technique [0002] Most of the salt-cavern gas storages in my country are built on layered salt layers, with low-grade salt rocks and many interlayers. The single-well convection method is mostly used for cavity construction, and the cavity construction speed is slow. It takes about 4 years, can not meet the needs of my country's underground gas storage construction. [0003] Salt cavern gas storage has a history of more than 50 years in foreign countries. In order to speed up the dissolution rate of salt caverns, foreign countries have developed and used a variety of solubilization tools and techniques, such as the use of fluid dynamics conversion cavity construction, jet countercurrent hydraulic Install cavity-making and other promoting tools and technological me...

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): E21F17/16
Inventor 袁光杰申瑞臣班凡生夏焱田中兰董胜祥金根泰蓝海峰路立君庄晓谦
Owner BC P INC CHINA NAT PETROLEUM CORP
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