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:
Jun. 23, 2020
Filed:
Feb. 27, 2015
Resman As, Trondheim, NO;
RESMAN AS, Trondheim, NO;
Abstract
A petroleum well tracer release flow shunt chamber in an annulus space about a base pipe and method of estimating one or more pressure differences or gradients, wherein the flow shunt chamber extending generally axial-parallel with the base pipe, and provided with a shunt flow passage for holding a shunt chamber fluid, and including: a tracer carrying system designed to release shots of tracer molecules or particles according to some control to the shunt chamber fluid, a first inlet aperture for receiving a first fluid, a second outlet aperture for releasing the shunt chamber fluid to a fluid, a flow restrictor nozzle unit allowing a pressure gradient between the inlet and outlet apertures driving the shunt chamber fluid out via the flow restrictor nozzle unit, topside recording the tracer transient response from the shunt chamber after tracer shots, extracting pressure gradients from recoded tracer transient response and tracer transient model, deriving wellbore inflow profile information from pressure gradients.