Preparation and use of drilling fluids with date seed powder fluid loss additive

Patent metadata

Field	Value
Publication number	US-9957433-B2
Application number	US-201615135057-A
Country	US
Kind code	B2
Filing date	Apr 21, 2016
Priority date	Apr 23, 2015
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Date seed powder can be used as a fluid loss additive for drilling fluids by mixing a quantity of date seed powder with a volume of fluid resulting in a mixture. The date seed powder or the mixture can be added to a drilling fluid. The drilling fluid that includes the date seed powder or the mixture can be used to drill a wellbore.

First claim

The invention claimed is:

1. A method comprising:
combining a date seed powder and water;
suspending the date seed powder in the water with a homogenizer to yield a water-based drilling fluid; and
providing the water-based drilling fluid to a wellbore.

2. The method of claim 1 , wherein the water-based drilling fluid is a clay-free water-based drilling fluid.

3. The method of claim 1 , wherein the homogenizer comprises at least one of psyllium husk, modified starch, and xanthan gum.

4. The method of claim 1 , wherein the homogenizer is present at a concentration of about 0.1% w/v to about 5% w/v.

5. The method of claim 1 , further comprising adding an alkaline salt to the water-based drilling fluid to increase a pH of the water-based drilling fluid.

6. The method of claim 5 , wherein a quantity of the alkaline salt is sufficient to increase the pH of the water-based drilling fluid to greater than about 9.

7. The method of claim 1 , wherein the date seed powder has a size distribution of less than about 150 μm.

8. The method of claim 1 , wherein the date seed powder is present at a concentration of about 1% w/v to about 5% w/v.

9. A method comprising:
providing a water-based drilling fluid to a wellbore, the water-based drilling fluid comprising:
water;
a date seed powder; and
a homogenizer,
wherein the homogenizer suspends the date seed powder in the water; and

drilling the wellbore.

10. The method of claim 9 , wherein the water-based drilling fluid is a clay-free water-based drilling fluid.

11. The method of claim 9 , wherein the homogenizer comprises at least one of psyllium husk, modified starch, and xanthan gum.

12. The method of claim 9 , wherein the homogenizer is present at a concentration of about 0.1% w/v to about 5% w/v.

13. The method of claim 9 , further comprising adding an alkaline salt to the water-based drilling fluid to increase a pH of the fluid.

14. The method of claim 13 , wherein a quantity of the alkaline salt is sufficient to increase the pH of the water-based drilling fluid to greater than about 9.

15. The method of claim 9 , wherein the date seed powder has a size distribution less than about 150 μm.

16. The method of claim 9 , wherein the date seed powder is present at a concentration of about 1% w/v to about 5% w/v.

17. A drilling fluid comprising:
a date seed powder;
a homogenizer; and
water,
wherein the homogenizer suspends the date seed powder in the water, and the drilling fluid is a water-based drilling fluid.

18. The drilling fluid of claim 17 , wherein the water-based drilling fluid is a clay-free water-based drilling fluid.

19. The drilling fluid of claim 17 , wherein the homogenizer comprises at least one of psyllium husk, modified starch, and xanthan gum.

20. The drilling fluid of claim 17 , wherein the homogenizer is present at a concentration of about 0.1% w/v to about 5% w/v.

21. The drilling fluid of claim 17 , further comprising an alkaline salt.

22. The drilling fluid of claim 17 , wherein the water-based drilling fluid has a pH of greater than about 9.

23. The drilling fluid of claim 17 , wherein the date seed powder has a size distribution less than about 150 μm.

24. The drilling fluid of claim 17 , wherein the date seed powder is present at a concentration of about 1% w/v to about 5% w/v.

Assignees

• Saudi Arabian Oil Co

Inventors

• Amanullah Md
• Ramasamy Jothibasu
• Alsubaie Turki Thuwaini Mohammed
• Fuwaires Omar A

Classifications

• C09K2208/04

  Hulls, shells or bark containing well drilling or treatment fluids · CPC title

• E21B21/003

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

• C09K8/08 Primary

  containing natural organic compounds, e.g. polysaccharides, or derivatives thereof · CPC title

• C09K8/50

  Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls (compositions for consolidating loose sand or the like around wells C09K8/56) · CPC title