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

In-situ dynamic separation backfill device for submarine natural gas hydrate

A technology for hydrates and natural gas, which is applied to the driving device for drilling in boreholes, underwater drilling, and drilling with liquid/gas jets, etc. It can solve the problems of low separation effect, limited processing capacity, and slow backfilling speed. Small structure, fast backfill speed, and the effect of backfill speed protection

Active Publication Date: 2018-10-30
SOUTHWEST PETROLEUM UNIV
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an in-situ dynamic separation and backfill device for marine natural gas hydrate, which mainly solves the problems of limited processing capacity, low separation effect, slow backfill speed and small backfill volume in the static separation and backfill device in the prior art

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
  • In-situ dynamic separation backfill device for submarine natural gas hydrate
  • In-situ dynamic separation backfill device for submarine natural gas hydrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Such as figure 2 As shown, at the beginning, the drilling fluid is injected into the pipeline gap of the upper double-layer pipe 12, and the drilling fluid enters the inner pipe of the conversion joint 13 and the dynamic sealing joint 2 through the bridge channel 18 provided, and drives the screw motor 15 to rotate. Drive the dynamic separation and backfill system 3 at the back end and the drill bit 4 to rotate. Since the dynamic sealing joint 2 is hollow, the drilling fluid enters the dynamic separation and backfill system 3 and enters the separator 8 from the flow hole 9. The outlet at the lower end enters the drill nozzle of the drill bit 4 to realize the drilling process of the drill bit.

[0022] Such as figure 1 , 2 As shown, after the drilling process of the drill bit is completed, the seawater enters the dynamic separation and backfill system 3 from the pipeline gap of the upper double-layer pipe 12 through the bridge channel. Under the action of pressure, th...

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 in-situ dynamic separation backfill device for submarine natural gas hydrate. The device is mainly used for solving the problems in the prior art that static backfill devices are limited in disposal amount, poor in separation effect, low in backfill speed and small in backfill amount. The device includes a power device, a dynamic sealing connector, a dynamic separation backfill system and a drill, wherein one end of the power device is connected to other hydrate exploitation dual-layer pipes and equipment, the dynamic sealing connector is connected to the other end of the power device, the dynamic separation backfill system connected to the dynamic sealing connector is in butt joint with the power device and can be driven by the dynamic sealing connector to rotate, and the drill is connected to the dynamic separation backfill system. According to the scheme above, the purpose of fast in-situ backfill is achieved, and the device has a high practical value anda high popularization value.

Description

technical field [0001] The invention relates to the technical field of natural gas hydrate exploitation, in particular to an in-situ dynamic separation and backfill device for marine natural gas hydrate. Background technique [0002] Natural gas hydrate, also known as combustible ice, is an ice-like solid compound formed by methane-based hydrocarbon gas and water under certain temperature and pressure conditions. The global natural gas hydrate reserves are huge, and it is a clean and high-quality energy, which occupies an important position in the future energy strategy. [0003] The main forms of hydrates are sandstone type, sandstone fissure type, fine-grained fissure type and dispersed type, among which the fine-grained fissure type and dispersed type hydrates account for the vast majority. The process can easily lead to geological and environmental disasters. At present, the traditional mining methods mainly include thermal shock method, decompression method, chemical ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/02E21B7/12E21B7/18E21B21/00
CPCE21B4/02E21B7/12E21B7/185E21B21/001E21B21/002
Inventor 邱顺佐王国荣钟林唐洋刘清友周守为李清平付强王雷振王广申李学峰黄蓉
Owner SOUTHWEST PETROLEUM UNIV
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