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:
Jul. 30, 2024
Filed:
Jun. 10, 2020
Sinopec Petroleum Engineering Technology Service Co., Ltd, Beijing, CN;
Sinopec Shengli Petroleum Engineering Co., Ltd, Shandong, CN;
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd, Shandong, CN;
Huangang Zhu, Shandong, CN;
Jiancheng Li, Shandong, CN;
Haoyu Sun, Shandong, CN;
Qiang Cao, Shandong, CN;
Yong Chen, Shandong, CN;
Dejing Yang, Shandong, CN;
Zongqing Li, Shandong, CN;
Chang Wang, Shandong, CN;
Rongrong Song, Shandong, CN;
Ping Xu, Shandong, CN;
Abstract
A double-channel fluid injection apparatus includes a main shaft, a bearing box, and a sealing box. The main shaft includes an outer tube and an inner tube. An internal channel of the inner tube and a vertical through channel constitute a first fluid passageway. The inner tube and the outer tube form an annular gap, and a channel D is radially formed at a lower part of the outer tube and is in communication with the annular gap, thus constituting a second fluid passageway. The bearing box is mounted on a boss of the outer tube. The sealing box includes a sealing cylinder fixedly connected to a lower end of a lower end cap of the bearing box. A channel E in communication with the second fluid passageway is radially formed at a position of the sealing cylinder corresponding to the channel of the outer tube.