IP Library › Patent Application 15577109
Patent Application
App. No. 15/577,109

NANOFIBRILLATED CELLULOSE FOR USE IN FLUIDS FOR PRIMARY OIL RECOVERY

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Quick Facts
Patent No.
US None
App. No.
15/577,109
Abstract

The present invention relates to nanofibrillated cellulose (NFC) for use in drilling fluids, fracturing fluids, spacer fluids etc. The fluids contain NFC as a viscosifier with an aspect ratio of more than 100 and where the nanofibrils have a diameter between 5 and 100 nanometer and a length of more than 1 μm.

Claims (4)

1 . A fluid containing nanofibrillated cellulose (NFC) as a viscosifier, wherein the fluid is a drilling fluid, a fracturing fluid, or a spacer fluid, wherein the NFC has an aspect ratio of more than 100 and where the nanofibrils have a diameter between 5 and 100 nanometer and a length of more than 1 μm.

2 . A fluid as claimed in claim 1 , wherein the aspect ratio of NFC is more than 500 and where the nanofibrils have a diameter between 5 and 50 nanometer and a length of more than 5 μm.

3 . A fluid as claimed in claim 1 , wherein the NFC is nanofibrillated lignocellulose having a lignin content of up to 20 wt % based on dry matter.

4 . A fluid as claimed in claim 3 , wherein the NFC is nanofibrillated lignocellulose having a lignin content of up to 10 wt % based on dry matter.

Assignments (2)
CHANGE OF NAME Recorded Mar 19, 2019
From: ELKEM AS
To: ELKEM ASA
Reel/Frame 048639/0477 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 27, 2017
From: AL-BAGOURY, MOHAMED
To: ELKEM AS
Reel/Frame 044837/0541 →