Patent · US Active

Method for wax removal and measurement of wax thickness

US8623147B2 · kind B2 · utility

4Cited by

6References

17Claims

0Family size

Assignee

STATOIL PETROLEUM AS · NO

Inventors

Rainer Hoffman · Langenfeld, DE
Lene Amundsen · Porsgrunn, NO

Key dates

Filing date	Oct 20, 2008
Grant date	Jan 7, 2014
Priority date	—
Expiry date	Sep 28, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28G15/003
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method for removal of wax deposited on an inner wall in contact with a fluid stream. The method includes the steps of cooling the inner wall and the fluid stream to a temperature of or below the wax appearance temperature, enabling wax to dissolve and precipitate on the inner wall, and heating of the inner wall for a short period of time to release the deposited wax from the surface of the inner wall, mainly in the form of solid parts. The thickness of wax deposits in a pipe section can be determined by computing the temperatures obtained upstream and downstream in the said pipe section, before and after applying heat pulse.

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