Treatment fluids containing high density iodide brines

Patent metadata

Field	Value
Publication number	US-11130898-B2
Application number	US-201916568951-A
Country	US
Kind code	B2
Filing date	Sep 12, 2019
Priority date	Nov 29, 2018
Publication date	Sep 28, 2021
Grant date	Sep 28, 2021

Abstract

The present disclosure provides methods and systems for treatment fluids including an iodide brine. In some embodiments of the present disclosure, an oil-based treatment fluid in the form of an invert emulsion comprising an aqueous internal phase and an oil external phase, wherein the aqueous internal phase comprises an iodide brine is provided. The treatment fluid may be introduced into at least a portion of a well bore penetrating at least a portion of a subterranean formation.

First claim

What is claimed is:

1. A method comprising:
providing a treatment fluid in the form of an invert emulsion comprising an aqueous internal phase and an oil external phase, wherein the aqueous internal phase comprises an iodide brine having a density at or above about 13 lb/gal, and wherein the iodide brine comprises at least one salt selected from the group consisting of: lithium iodide, sodium iodide, potassium iodide, rubidium iodide, cesium iodide, magnesium iodide, calcium iodide, barium iodide, and any combination thereof; and
introducing the treatment fluid into at least a portion of a well bore penetrating at least a portion of a subterranean formation.

2. The method of claim 1 , wherein the treatment fluid further comprises a crystallization inhibitor.

3. The method of claim 2 wherein the crystallization inhibitor is selected from the group consisting of: alcohols, glycols, sugar alcohols, aldoses, ketoses, inorganic salts, amides, amino acids, sugar acids, any derivative thereof, and any combination thereof.

4. The method of claim 1 wherein the iodide brine has a density of about 13.3 lb/gal to about 18 lb/gal.

5. The method of claim 1 , wherein the treatment fluid further comprises an emulsifier.

6. The method of claim 5 , wherein the emulsifier is selected from the group consisting of: fatty amines, ethoxylated nonylphenols, fatty acids, fatty acid esters, tail oil, oxidized tall oil, modified tall oil, rosin acid, resin acid, any derivative thereof, and any combination thereof.

7. The method of claim 1 , wherein the treatment fluid further comprises an additional brine.

8. The method of claim 7 wherein the additional brine comprises at least one salt selected from the group consisting of: sodium chloride, sodium bromide, sodium formate, potassium formate, cesium formate, lithium bromide, potassium bromide, rubidium bromide, magnesium bromide, calcium bromide, calcium chloride, strontium bromide, zinc bromide, manganese (II) bromide, or any combinations thereof.

9. A method comprising:
providing a water-based drill-in fluid, wherein the water-based drill-in fluid comprises an iodide brine, wherein the water-based drill-in fluid further comprises a viscosifier, and wherein the iodide brine comprises at least one salt selected from the group consisting of: lithium iodide, sodium iodide, potassium iodide, rubidium iodide, cesium iodide, magnesium iodide, calcium iodide, barium iodide, and any combination thereof;
introducing the water-based drill-in fluid into at least a portion of a well bore penetrating at least a portion of a subterranean formation; and
using the water-based drill-in fluid to drill at least the portion of the well bore to penetrate at least a reservoir portion of the subterranean formation.

10. The method of claim 9 wherein the water-based drill-in fluid has a density over about 14 lb/gal.

11. The method of claim 9 wherein the viscosifier is selected from the group consisting of: xanthan gum, crosslinked starch, modified starch, modified hydroxyethylcellulose, crosslinked hydroxyethylcellulose, biopolymers, synthetic polymer, any derivative thereof, and any combination thereof.

12. The method of claim 9 wherein the water-based drill-in fluid further comprises a crystallization inhibitor selected from the group consisting of: alcohols, glycols, sugar alcohols, aldoses, ketoses, inorganic salts, amides, amino acids, sugar acids, any derivative thereof, and any combination thereof.

13. The method of claim 9 , wherein the water-based drill-in fluid further comprises a fluid loss control additive.

14. The method of claim 9 , wherein the water-based drill-in fluid further comprises a weighting agent selected from calcium carbonate, magnesium carbonate, magnesium oxide, magnesium hydroxide, barite, manganese tetroxide, ilmenite, any derivative thereof, and any combination thereof.

15. The method of claim 9 , wherein the water-based drill-in fluid further comprises an additional brine.

16. The method of claim 15 wherein the additional brine comprises at least one salt selected from the group consisting of: sodium chloride, sodium bromide, sodium formate, potassium formate, cesium formate, lithium bromide, potassium bromide, rubidium bromide, magnesium bromide, calcium bromide, calcium chloride, strontium bromide, zinc bromide, manganese (II) bromide, or any combinations thereof.

17. A method comprising:
providing an oil-based treatment fluid in the form of an invert emulsion comprising an aqueous internal phase and an oil external phase, wherein the aqueous internal phase comprises an iodide brine having a density at or above about 13 lb/gal, wherein the iodide brine comprises at least one salt selected from the group consisting of: lithium iodide, sodium iodide, potassium iodide, rubidium iodide, cesium iodide, magnesium iodide, calcium iodide, barium iodide, and any combination thereof;
wherein the treatment fluid further comprises a crystallization inhibitor selected from the group consisting of: alcohols, glycols, sugar alcohols, aldoses, ketoses, inorganic salts, amides, amino acids, sugar acids, any derivative thereof, and any combination thereof; and
introducing the treatment fluid into at least a portion of a well bore penetrating at least a portion of a subterranean formation.

Assignees

• Halliburton Energy Services Inc

Inventors

• Zhou Hui
• Davis Chesnee Lae

Classifications

• C09K8/82

  Oil-based compositions (C09K8/64 takes precedence) · CPC title

• C09K8/74

  combined with additives added for specific purposes · CPC title

• C09K8/64

  Oil-based compositions · CPC title

• C09K8/565

  Oil-based compositions · CPC title

• C09K8/502

  Oil-based compositions · CPC title