Patent · US Active

Dual function downhole tool

US10337323B2 · kind B2 · utility

3Cited by

9References

17Claims

0Family size

Assignee

WELLTEC A/S · DK

Inventors

Christian Krüger · Stuttgart, DE
Peter Gråbæk · Greve Strand, DK

Key dates

Filing date	Jun 10, 2015
Grant date	Jul 2, 2019
Priority date	—
Expiry date	Dec 5, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B23/001
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A wireline tool for sampling/jetting fluid in a well includes a pump with an opening, and a chamber for collecting/jetting fluid, the chamber having first and second ends. The chamber includes first and second pistons dividing the chamber into first, second and third chamber sections. The first and second pistons are attached to respective piston rods, and the rods are supported by respective supports. A first spring is provided between the first piston and its support and another spring is provided between the second piston and its support. When the pump operates, the pistons are forced in one direction, hence activating spring forces of the springs and allowing fluid to flow from one chamber section to another chamber section.

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