Well treatment fluid having an acidic nanoparticle based dispersion and a polyamine

Patent metadata

Field	Value
Publication number	US-10731069-B2
Application number	US-201816185742-A
Country	US
Kind code	B2
Filing date	Nov 9, 2018
Priority date	Sep 11, 2017
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

A well treatment fluid is provided having an acidic nanosilica dispersion and a polyamine activator. The acidic nanosilica dispersion and the polyamine activator may form a gelled solid after interaction over a period. Methods of reducing water production using the well treatment fluids are also provided.

First claim

What is claimed is:

1. A treatment fluid for reducing water production in a treatment zone in a wellbore, comprising:
an acidic nanosilica dispersion; and
a polyethylene polyamine, the polyethylene polyamine selected to form a gelled solid after interaction with the acidic nanosilica dispersion for a period.

2. The treatment fluid of claim 1 , wherein the period comprises a range of 0.5 hours to 24 hours.

3. The treatment fluid of claim 1 , consisting of the acidic nanosilica dispersion and the polyethylene polyamine.

4. The treatment fluid of claim 1 , wherein the polyethylene polyamine comprises at least one of diethylenetriamine, ethylenediamine, tetraethylenepetamine (TEPA), triethylentetramine, pentaethylenehexamine (PEHA), and hexaethyleneheptamine (HEHA).

5. The treatment fluid of claim 1 , wherein the polyethylene polyamine comprises an amount in the range of 0.1 percent by volume of the total volume (v/v %) to 20 v/v %.

6. The treatment fluid of claim 1 , wherein the acidic nanosilica dispersion is stabilized by a cationic polymer.

7. The treatment fluid of claim 1 , wherein the acidic nanosilica dispersion is stabilized by a carboxylic acid.

8. The treatment fluid of claim 1 , wherein the acidic nanosilica dispersion is stabilized by acetic acid.

9. A solid gelled material useful for reducing water production where the solid gelled material forms by introducing an acidic nanosilica dispersion and a polyethylene polyamine to a treatment zone, the acidic nanosilica dispersion comprising amorphous silicon dioxide and water, such that the nanosilica dispersion and the polyethylene polyamine contact the treatment zone having an elevated temperature for a period such that the solid gelled material forms.

10. The solid gelled material of claim 9 , wherein the polyethylene polyamine comprises at least one of diethylenetriamine, ethylenediamine, tetraethylenepetamine (TEPA), triethylentetramine, pentaethylenehexamine (PEHA), hexaethyleneheptamine (HEHA).

11. The solid gelled material of claim 9 , wherein the polyethylene polyamine comprises an amount in the range of 0.1 percent by volume of the total volume (v/v %) to 20 v/v %.

12. The solid gelled material of claim 9 , wherein the polyethylene polyamine is introduced separately from the acidic nanosilica dispersion to the treatment zone.

13. The solid gelled material of claim 9 , wherein the polyethylene polyamine and the acidic nanosilica dispersion are introduced simultaneously to the treatment zone.

14. The solid gelled material of claim 9 , wherein the acidic nanosilica dispersion has an acidic pH, wherein the pH value is increased after contact with the polyethylene polyamine.

Assignees

• Saudi Arabian Oil Co

Inventors

• Wagle Vikrant
• Al-Yami Abdullah
• Alsaihati Zainab
• Alhelal Abdulaziz

Classifications

• C09K8/508 Primary

  macromolecular compounds {(C09K8/512 takes precedence)} · CPC title

• E21B21/003

  Means for stopping loss of drilling fluid (plastering the borehole wall E21B33/138) · CPC title

• C09K8/5083 Primary

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09K2208/10

  Nanoparticle-containing well treatment fluids · CPC title

• E21B33/138

  Plastering the borehole wall; Injecting into the formation · CPC title