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:
Jun. 23, 2015
Filed:
Apr. 15, 2010
Youhong Sun, Changchun, CN;
Jiangpeng Zhao, Changchun, CN;
Wei Guo, Changchun, CN;
Huiwen Xu, Changchun, CN;
Qinghua Wang, Changchun, CN;
Chen Chen, Changchun, CN;
Guosheng LI, Changchun, CN;
Rui Jia, Changchun, CN;
Jianguo Zhao, Changchun, CN;
Jun Xue, Changchun, CN;
Youhong Sun, Changchun, CN;
Jiangpeng Zhao, Changchun, CN;
Wei Guo, Changchun, CN;
Huiwen Xu, Changchun, CN;
Qinghua Wang, Changchun, CN;
Chen Chen, Changchun, CN;
Guosheng Li, Changchun, CN;
Rui Jia, Changchun, CN;
Jianguo Zhao, Changchun, CN;
Jun Xue, Changchun, CN;
JILIN UNIVERSITY, Changchun, Jilin, CN;
Abstract
A forced cooling circulation system for drilling mud, which includes a refrigeration unit (), a secondary refrigerant tank (), a coaxial convection heat exchanger () for mud and a mud pond (), is disclosed. The refrigeration unit () is in connection with the secondary refrigerant tank () and the coaxial convection heat exchanger () for mud via a pump (), and the coaxial convection heat exchanger () for mud is in connection with the mud pond () via a pump () and pipelines. Heat exchange tubes of the coaxial convection heat exchanger () for mud are disposed as a double-layer structure or a multi-layer structure, and the inner heat exchange tubes () are mounted inside of the outer heat exchange tubes (). The secondary refrigerant or the mud is circulated in the annular space between the inner heat exchange tubes () and the outer heat exchange tubes (), and the mud or the secondary refrigerant is circulated in the inner tubes (). The flow of the circulated mud is opposite to that of the circulated secondary refrigerant, and insulation material () is painted on the external wall of the outer tubes ().