Multiple functional wellbore fluid additive

Patent metadata

Field	Value
Publication number	US-11643588-B2
Application number	US-201715830553-A
Country	US
Kind code	B2
Filing date	Dec 4, 2017
Priority date	Dec 4, 2017
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

The embodiments described herein generally relate to methods and chemical compositions for use with wellbore treatment processes. In one embodiment, a composition is provided comprising a cementitious material, a drilling fluid, or combinations thereof, and an additive composition comprising one or more components selected from the group of an aqueous insoluble lignin, a coke fine, a random tetracopolymer having the formula styrene-butadiene-acrylic-fumaric acid, a polyvinyl acetate, a surfactant composition, and combinations thereof.

First claim

What is claimed is:

1. A composition, comprising:
a cementitious material, and
an additive composition comprising:
an aqueous insoluble lignin,
a random tetracopolymer comprising monomers of styrene, butadiene, acrylic acid, and fumaric acid,
a polyvinyl acetate, and
a surfactant composition comprising a nonionic surfactant disposed in a microporous carrier.

2. The composition of claim 1 , wherein the composition comprises:
from about 90 wt. % to about 99.9 wt. % of the cementitious material; and
from about 0.1 wt. % to about 10 wt. % of the additive composition.

3. The composition of claim 2 , wherein the additive composition comprises from about 0.1 to about 50 wt % of the aqueous insoluble lignin.

4. The composition of claim 1 , wherein the cementitious material comprises one or materials selected from the group consisting of cement, fly ash, clay, silica flour, and combinations thereof.

5. The composition of claim 1 , wherein the cementitious material further comprises water and is in the form of a slurry.

6. The composition of claim 5 , wherein the aqueous insoluble lignin comprises Kraft lignin.

7. The composition of claim 1 , wherein the additive composition comprises:
from about 0.1 to about 99.7 wt % of the aqueous insoluble lignin;
from about 0.1 to about 99.7 wt % of the random tetracopolymer;
from about 0.1 to about 99.7 wt % of the polyvinyl acetate; and
from about 0.1 to about 99.7 wt % of the surfactant composition, wherein the total wt. % is 100 wt. % of the additive composition.

8. The composition of claim 1 , wherein the aqueous insoluble lignin comprises Kraft lignin.

9. The composition of claim 1 , further comprising one or more additives selected from the group consisting of defoaming agent, dispersant, free water control agent, and combinations thereof.

10. The composition of claim 1 , wherein the surfactant composition further comprises an ionic surfactant.

Assignees

• Hexion Inc

Inventors

• Jiang Li
• Beetge Jan
• Zou Fenglou

Classifications

• C04B14/022

  Carbon · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title

• C09K8/035

  Organic additives · CPC title

• C04B24/2688

  Copolymers containing at least three different monomers · CPC title

• C04B2103/46

  Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents · CPC title