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:
May. 18, 2021
Filed:
Mar. 05, 2020
Southwest Petroleum University, Sichuan, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
The present invention discloses an ultrasonic wellbore anti-collision monitoring system, comprising a downhole ultrasonic monitoring device and a ground control system, wherein the ultrasonic monitoring device includes a cylindrical body, at least three centralizers are fixed on the cylindrical body at an equal interval, the mounting groove 1 is cut into the cylindrical body surface between two adjacent centralizers, one electrically controlled expansion device is installed in the groove 1 and includes electric push rods placed horizontally and a ribbed plate perpendicular to the electric push rods, the bottom ends of the electric push rods are fixedly connected to the bottom surface of the mounting groove, the front ends of the electric push rods are connected with the ribbed plate, the mounting groove 2 is cut into the ribbed plate, and one ultrasonic transducer is installed in the groove 2. The ground control system controls the ultrasonic transducer to emit S wave and receive the reflected wave, and calculates the distance between the two wells by monitoring the time difference between the emission time and the reflection time in combination with the travel velocity of S wave in the formation. The wellbore anti-collision monitoring system is simple in structure and easy in monitoring operation.