Patent · US Active

Dart detector for wellbore tubular cementation

US9957794B2 · kind B2 · utility

2Cited by

12References

20Claims

0Family size

Assignee

WEATHERFORD TECHNOLOGY HOLDINGS, LLC · US

Inventors

Burkhard Zippel · Lehrte, DE
Martin Helms · Burgdorf, DE
Mark Chandler · Austin, US
Simon J. Harrall · Inverurie, GB

Key dates

Filing date	May 20, 2015
Grant date	May 1, 2018
Priority date	—
Expiry date	Mar 13, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B47/138
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A detector for use in cementing a tubular string in a wellbore includes: a tubular mandrel; an electronics package fastened to an outer surface of the mandrel; a first transducer: fastened to the mandrel outer surface, in communication with the electronics package, and operable to generate ultrasonic pulses; a second transducer: fastened to the mandrel outer surface, in communication with the electronics package, and operable to receive the ultrasonic pulses; and an antenna fastened to the mandrel outer surface and in communication with the electronics package.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.