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.:
Date of Patent:
Mar. 16, 2021
Filed:
Jul. 08, 2019
Shinda (Tangshan) Creative Oil & Gas Equipment Co., Ltd., Tangshan, CN;
Shujun Zhang, Tangshan, CN;
Bin Zheng, Tangshan, CN;
Jianliang Duan, Tangshan, CN;
Jian Dong, Tangshan, CN;
Yueqing Lin, Tangshan, CN;
Xiang Liu, Tangshan, CN;
Fengshou Shangguan, Tangshan, CN;
SHINDA (TANGSHAN) CREATIVE OIL & GAS EQUIPMENT CO., LTD., Tangshan, CN;
Abstract
A super-long thermal insulation steel jacket pipe and a machining process for making such a pipe are provided. The pipe is designed to exhibit good thermal insulation performance and corrosion resistance. An annular cavity of the pipe is in a vacuum state, and the pipe is internally provided with a support frame and filled with a phase change material. When the pipe is used for underground energy exploitation, temperature in a working steel pipe in the pipe can be effectively kept unaffected when external temperature decreases. The steel jacket pipe has long service life, and can greatly reduce costs of exploitation of petroleum and/or of an underground heat source, such as by reducing a heat loss in exploitation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile