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:
Apr. 28, 2026
Filed:
Nov. 28, 2023
Petrochina Company Limited, Beijing, CN;
Cnpc Engineering Technology R&d Company Limited, Beijing, CN;
Guangjie Yuan, Beijing, CN;
Jingcui Li, Beijing, CN;
Yan Xia, Beijing, CN;
Jifang Wan, Beijing, CN;
Gentai Jin, Beijing, CN;
Guotao Li, Beijing, CN;
Hong Zhang, Beijing, CN;
Tianen Liu, Beijing, CN;
Pan Fu, Beijing, CN;
Yuhan Pang, Beijing, CN;
PetroChina Company Limited, Beijing, CN;
CNPC Engineering Technology R&D Company Limited, Beijing, CN;
Abstract
A lost circulation detection device includes a first detection member and a second detection member, a first signal transmitter and a first signal receiver are disposed on the first detection member, and the first signal transmitter transmits a signal along an axial direction of a rockshaft so that the first signal receiver acquires data information of drilling fluid in the axial direction of the rockshaft; a fluid channel penetrating through the second detection member is disposed in the second detection member, and the fluid channel is configurable to be in communication with the rockshaft; a second signal transmitter and a second signal receiver are disposed oppositely on two sides of the fluid channel, and the second signal transmitter transmits a signal along a center line of a second accommodating groove, so that the second signal receiver acquires data information of drilling fluid in a circumferential direction of the rockshaft.