Patent · US Active

Tool assembly with a fluidic agitator

US10450819B2 · kind B2 · utility

1Cited by

8References

16Claims

0Family size

Assignees

CNPC USA Corporation · US
Beijing Huamei, Inc. · CN

Inventors

Ming Zhang · Beijing, CN
Chris Cheng · Houston, US
Dengxiang Bai · Beijing, CN
Xiongwen Yang · Beijing, CN
Kuangsheng Zhang · Beijing, CN
Yuming Wang · Beijing, CN
Peiyuan Hu · Shanxi, CN

Key dates

Filing date	Nov 21, 2017
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Dec 22, 2037

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B28/00
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The tool assembly vibrates a casing string or drill string in a wellbore. The tool assembly includes a housing, an insert mounted in the housing as a fluidic agitator, and a cover fitted over the insert. The insert includes an inlet chamber, a vortex chamber, and a feedback chamber, and the fluid flow through the insert has a pressure profile with a plurality of levels determined by the feedback chamber. The strength and frequency of the pressure profile can be regulated by the feedback chamber according to position, size and asymmetry of the transition channels connected to the feedback chamber. The high strength and low frequency pressure pulses can be achieved in the limited space of the housing for placement of the inlet and outlet.

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