Patent · US Active

In situ exploitation-separation-backfilling integration apparatus used for natural gas hydrates

US11434727B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Inventors

Yang Tang · Pleasanton, US
Zeliang LI · Chengdu, CN
Guorong Wang · Chengdu, CN
Qingyou Liu · Chengdu, CN
Jinhai Zhao · Houston, US
Guangjie Yuan · Chengdu, CN
Jinzhong Wang · Chengdu, CN
Yufa He · Beijing, CN
Qingping Li · Hangzhou City, CN
Chuanhua Ma · Chengdu, CN
Yuan Huang · Tangxia, CN

Key dates

Filing date	Nov 29, 2021
Grant date	Sep 6, 2022
Priority date	—
Expiry date	Nov 29, 2041

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B43/40
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An in situ exploitation-separation-backfilling integration apparatus for natural gas hydrates is disclosed, consisting of a cyclonic suction device for coarse fraction, a jet flow device for sand discharge and a spiral cyclone device for fine fraction. The cyclonic suction device for coarse fraction is provided with a vortex trough and a cyclonic auxiliary flow channel; the jet flow device for sand discharge mainly consists of a sand discharge sliding sleeve, a sand discharge jet cylinder and a spring, wherein the sand discharge sliding sleeve can control the spraying out of hydraulic fluid and it is provided with a sand discharge butting head; inside the spiral cyclone device for fine fraction is a tapered structure and its upper portion is provided with a centering bracket.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.