IP Library Granted Patent US 10,669,468
Granted Patent B2
US 10,669,468 · App. 14/506,137 · Granted Jun 2, 2020

Reusable high performance water based drilling fluids

Inventors: César Misino (Rio de Janeiro, BR); Luc Leoni (Rio de Janeiro, BR); Shaohua Lu (Houston, TX); Gaston Wray Curtis (Houston, TX)
C09K8/28C09K8/08C09K8/26E21B7/00C09K2208/12
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Quick Facts
Patent No.
US 10,669,468
App. No.
14/506,137
Granted
Jun 2, 2020
Kind
B2
Abstract

Compositions emulate oil based fluids include an aqueous phase and an organic internal phase, which creates an osmotic membrane within the aqueous continuous phase. The osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid, where the non-aqueous phase is composed of glycerols, polyglycerols, poly hydroxyl alcohols, monosaccharide derivatives, polysaccharide derivatives, or mixtures and combinations thereof, while the aqueous phase contains additives that impart different inhibiting mechanisms to the overall composition, where the additives include, without limitation, amphoteric polymers, potassium and/or sodium salts up to saturation and/or acrylamides.

Claims (23)

1. A reusable fluid composition comprising:

an aqueous continuous phase comprising an additive composition to change certain properties of the aqueous continuous phase, the additive composition comprising an amphoteric polymer, a polyacrylamide, or a combination thereof; and

an organic internal phase comprising a glycerol, a polyglycerol, a poly hydroxyl alcohol, a monosaccharide derivative, a polysaccharide derivative, or a combination thereof, wherein the organic internal phase creates an osmotic membrane within the aqueous continuous phase, and wherein the osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid.

2. The fluid composition of claim 1 , wherein the fluid composition has a density between about 8.6 ppg and about 20 ppg, the aqueous continuous phase is present in an amount between about 51 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 49 wt.%.

3. The fluid composition of claim 2 , wherein the fluid composition has a density between about 8.6 ppg and about 16 ppg, the aqueous continuous phase is present in an amount between about 55 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 45 wt.%.

4. The fluid composition of claim 3 , wherein the fluid composition has a density between about 8.6 ppg and about 14 ppg, the aqueous continuous phase is present in an amount between about 65 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 35 wt.%.

5. The fluid composition of claim 1 , wherein the aqueous continuous phase further comprises a brine, the brine comprises a salt, and the salt comprises a sodium salt, a potassium salt, a calcium salt, or a combination thereof.

6. The fluid composition of claim 5 , wherein the brine comprises a fresh water brine and wherein the salt comprises NaCl, KCl, CaCl 2 , and/or equivalent sodium, potassium and/or calcium salts.

7. A reusable drilling fluid composition comprising:

an aqueous continuous phase comprising an additive composition to change certain properties of the aqueous continuous phase, the additive composition comprising a salt up to saturation and at least one of an amphoteric polymer or a polyacrylamide; and

an organic internal phase, which creates an osmotic membrane within the aqueous continuous phase, wherein the osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid, and wherein the organic internal phase comprises a glycerol, a polyglycerol, a poly hydroxyl alcohol, a monosaccharide derivative, a polysaccharide derivative, or a combination thereof.

8. The fluid composition of claim 7 , wherein the fluid composition has a density between about 8.6 ppg and about 20 ppg, the aqueous continuous phase is present in an amount between about 51 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 49 wt.%.

9. The fluid composition of claim 8 , wherein the fluid composition has a density between about 8.6 ppg and about 16 ppg, the aqueous continuous phase is present in an amount between about 55 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 45 wt.%.

10. The fluid composition of claim 9 , wherein the fluid composition has a density between about 8.6 ppg and about 14 ppg, the aqueous continuous phase is present in an amount between about 65 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 35 wt.%.

11. The fluid composition of claim 7 , wherein the aqueous continuous phase further comprises a brine, the brine comprises a salt, and the salt comprises a sodium salt, a potassium salt, a calcium salt, or a combination thereof.

12. The fluid composition of claim 11 , wherein the brine comprises a fresh water brine and wherein the salt comprises NaCl, KCl, CaCl 2 , and/or equivalent sodium, potassium and/or calcium salts.

13. A reusable fluid composition comprising:

an aqueous continuous phase comprising an additive composition to change certain properties of the aqueous continuous phase, the additive composition comprising a salt up to saturation, a hydratable polymer, and an amphoteric polymer; and

an organic internal phase comprising a glycerol, a polyglycerol, a poly hydroxyl alcohol, a monosaccharide derivative, a polysaccharide derivative, or a combination thereof, wherein the organic internal phase creates an osmotic membrane within the aqueous continuous phase, and wherein the osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid.

14. The fluid composition of claim 13 , wherein the salt is a potassium salt, a sodium salt, or a combination thereof.

15. The fluid composition of claim 13 , wherein the fluid composition has a density between about 8.6 ppg and about 20 ppg, the aqueous continuous phase is present in an amount between about 51 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 49 wt.%.

16. The fluid composition of claim 13 , wherein the fluid composition has a density between about 8.6 ppg and about 16 ppg, the aqueous continuous phase is present in an amount between about 55 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 45 wt.%.

17. The fluid composition of claim 13 , wherein the fluid composition has a density between about 8.6 ppg and about 14 ppg, the aqueous continuous phase is present in an amount between about 65 wt.% and about 95 wt.%, and the organic internal phase is present in an amount between about 5 wt.% and about 35 wt.%.

Assignments (10)
PATENT SECURITY INTEREST ASSIGNMENT AGREEMENT Recorded Apr 26, 2023
From: DEUTSCHE BANK TRUST COMPANY AMERICAS
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 063470/0629 →
RELEASE OF SECURITY INTEREST Recorded Oct 1, 2021
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY, INC.; PRECISION ENERGY SERVICES, INC.; WEATHERFORD CANADA LTD; WEATHERFORD SWITZERLAND TRADING AND DEVELOPMENT GMBH; PRECISION ENERGY SERVICES ULC; WEATHERFORD U.K. LIMITED
Reel/Frame 057683/0423 →
SECURITY INTEREST Recorded Oct 1, 2021
From: WEATHERFORD TECHNOLOGY HOLDINGS, LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY, INC.; PRECISION ENERGY SERVICES, INC.; WEATHERFORD CANADA LTD.; WEATHERFORD SWITZERLAND TRADING AND DEVELOPMENT GMBH; WEATHERFORD U.K. LIMITED
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 057683/0706 →
RELEASE OF SECURITY INTEREST Recorded Aug 28, 2020
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY, INC.; PRECISION ENERGY SERVICES, INC.; WEATHERFORD CANADA LTD.; WEATHERFORD SWITZERLAND TRADING AND DEVELOPMENT GMBH; PRECISION ENERGY SERVICES ULC; WEATHERFORD U.K. LIMITED
Reel/Frame 053838/0323 →
SECURITY INTEREST Recorded Dec 26, 2019
From: WEATHERFORD TECHNOLOGY HOLDINGS, LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY, INC.; PRECISION ENERGY SERVICES, INC.; WEATHERFORD CANADA LTD.; WEATHERFORD SWITZERLAND TRADING AND DEVELOPMENT GMBH; PRECISION ENERGY SERVICES ULC; WEATHERFORD U.K. LIMITED
To: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS ADMINISTRATIVE AGENT
Reel/Frame 051419/0140 →
SECURITY INTEREST Recorded Dec 18, 2019
From: WEATHERFORD TECHNOLOGY HOLDINGS LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY INC.; PRECISION ENERGY SERVICES INC.; WEATHERFORD CANADA LTD.; WEATHERFORD SWITZERLAND TRADING AND DEVELOPMENT GMBH; PRECISION ENERGY SERVICES ULC; WEATHERFORD U.K. LIMITED
To: WELLS FARGO BANK NATIONAL ASSOCIATION AS AGENT
Reel/Frame 051891/0089 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 24, 2019
From: THE LUBRIZOL CORPORATION
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Reel/Frame 048977/0357 →
MERGER Recorded Feb 4, 2019
From: LUBRIZOL OILFIELD SOLUTIONS, INC.
To: THE LUBRIZOL CORPORATION
Reel/Frame 048225/0511 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 9, 2015
From: CLEARWATER INTERNATIONAL, L.L.C.
To: LUBRIZOL OILFIELD SOLUTIONS, INC.
Reel/Frame 036822/0379 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2014
From: MISINO, CESAR; LEONI, LUC; LU, SHAOHUA; CURTIS, GASTON WRAY
To: CLEARWATER INTERNATIONAL LLC
Reel/Frame 034539/0864 →