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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11021943 B1

PDFFull Text
Date of Patent:
Jun. 01, 2021

Filed:

Aug. 24, 2016

Ignition device for underground coal gasification process, and applications thereof

Applicant:

Zhongwei (Shanghai) Energy Technology Co. Ltd, Shanghai, CN;

Inventors:

Zhenhua Min, Shanghai, CN;

Yuanli Wang, Shanghai, CN;

Casper Jan Hendrik Burger, Shanghai, CN;

Assignee:

ZHONGWEI (SHA GHAI) ENERGY TECHNOLOGY CO. LTD, Shanghai, CN;

Attorneys:

Dunlap Bennett & Ludwig, PLLC

Brendan E. Squire

Primary Examiner:

Catherine Loikith

Int. Cl.
CPC ...
E21B 43/295 (2006.01); E21B 43/1185 (2006.01); E21B 43/243 (2006.01); E21B 19/22 (2006.01); E21B 43/248 (2006.01); E21B 43/30 (2006.01);
U.S. Cl.
CPC ...
E21B 43/295 (2013.01); E21B 19/22 (2013.01); E21B 43/1185 (2013.01); E21B 43/243 (2013.01); E21B 43/248 (2013.01); E21B 43/305 (2013.01);
Abstract

An ignition device for an underground coal gasification process, and an underground coal gasification method for carrying out ignition. The ignition device comprises a conveying device, a cut-off device (), an ignition detonator () and one or more fuel packs (), sequentially connected. The fuel packs are serially connected with each other. The conveying device is a coiled tubing/conjugation tube (), or an integrated signal cable (). The ignition detonator runs through one or more fuel packs and ignites the one or more fuel packs starting from the top of the device in a delayed manner. The cut-off device breaks off after the ignition detonator is started, so that ignition device components comprising the conveying device are at least withdrawn to a safe position. Each fuel pack comprises thermite and is used for igniting an underground coal seam () after the fuel pack is ignited.

Find Patent Forward Citations

Min, Zhenhua. (2021). Ignition device for underground coal gasification process, and applications thereof (U.S. Patent No. 11021943). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11021943

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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