Patent · US Active

Method and apparatus for reducing liquid pressure

US11655914B2 · kind B2 · utility

0Cited by

19References

6Claims

0Family size

Assignee

EQUINOR ENERGY AS · NO

Inventors

Christian Rosenkilde · Porsgrunn, NO
Patrick MÜLLER · Porsgrunn, NO

Key dates

Filing date	Sep 26, 2017
Grant date	May 23, 2023
Priority date	—
Expiry date	Sep 23, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01F2101/505
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of reducing the pressure of a liquid includes the steps of providing a conduit containing a packing material, such that a large number of small passages are formed in the packing material, and passing the liquid through the conduit and the packing material. The amount of packing material through which the liquid flows can be varied to vary the pressure drop experienced by the liquid passing through the packing material. The reduction in pressure achieved may be stepwise (discrete) or continuous. The method may be used to reduce the pressure of an aqueous polymer solution for use in a polymer flood technique for oil extraction, and allows the pressure to be reduced without damage to the polymer.

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