Drilling mud composition with Aloe vera particles and a fracking process using the same

Patent metadata

Field	Value
Publication number	US-9879171-B2
Application number	US-201615041577-A
Country	US
Kind code	B2
Filing date	Feb 11, 2016
Priority date	Feb 11, 2016
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A drilling mud composition including Aloe vera particles with a largest dimension of 75-600 μm, an aqueous base fluid, and a viscosifier, where the Aloe vera particles are present in the drilling mud composition at a concentration of less than 150 ppm, relative to the total weight of the drilling mud composition. A process for fracking a geological formation, whereby the drilling mud composition is injected into the geological formation through a well bore at a pressure of at least 5,000 psi to fracture the geological formation.

First claim

The invention claimed is:

1. A drilling mud composition, comprising:
Aloe vera particles, which have a largest dimension of 75-600 μm;
an aqueous base fluid; and
a viscosifier;
wherein the Aloe vera particles are present in the drilling mud composition at a concentration of less than 150 ppm, relative to the total weight of the drilling mud composition; and
wherein the Aloe vera particles comprise 20-60 wt % carbon, 30-36 wt % oxygen, 2-14 wt % calcium, 1-9 wt % potassium, 1-8 wt % chlorine, 1-5 wt % aluminum, and 1-4 wt % phosphorous, relative to the total weight of the Aloe vera particles.

2. The drilling mud composition of claim 1 , wherein the viscosifier is bentonite.

3. The drilling mud composition of claim 2 , wherein the bentonite is present in 0.1-30 wt % relative to the total weight of the drilling mud composition.

4. The drilling mud composition of claim 1 , which has an apparent viscosity of 11-15 cP.

5. The drilling mud composition of claim 1 , which has a plastic viscosity of 7.5-10.5 cP.

6. The drilling mud composition of claim 1 , which has a yield point of 5-12 lb/100 ft 2 .

7. The drilling mud composition of claim 1 , which has a gel strength of 3-15 lb/100 ft 2 after 10 seconds.

8. The drilling mud composition of claim 1 , wherein the Aloe vera particles comprise vitamin A, vitamin B1, vitamin B2, vitamin B6, vitamin B12, vitamin C, vitamin E, folic acid, niacin, or combinations thereof.

9. The drilling mud composition of claim 1 , wherein the Aloe vera particles are present in the drilling mud composition at a concentration ranging from 0.1-100 ppb, relative to the total weight of the drilling mud composition.

10. The drilling mud composition of claim 1 , which reduces a % loss of the aqueous base fluid during filtration by 20-50% compared to a drilling mud composition that is substantially the same without the Aloe vera particles.

11. The drilling mud composition of claim 1 , further comprising at least one additive selected from the group consisting of an antiscalant, a thickener, a deflocculant, an anionic polyelectrolyte, a lubricant, a fluid loss additive, and a weighting agent.

12. A process for fracturing an underground geological formation, comprising:
injecting the drilling mud composition of claim 1 into the underground geological formation through a well bore at a pressure of at least 5,000 psi to fracture the underground geological formation and form fissures in the underground geological formation,
injecting a suspension of sand or quartz into the underground geological formation through the well bore to deposit the sand or the quartz in the fissures.

13. The process of claim 12 , wherein the drilling mud composition reduces a % loss of the aqueous base fluid in the underground geological formation during the injecting compared to a drilling mud composition that is substantially the same without the Aloe vera particles.

14. The process of claim 12 , further comprising circulating the drilling mud composition within the well bore after the injecting.

15. The process of claim 14 , wherein the drilling mud composition is circulated for at least 30 minutes.

16. The process of claim 12 , wherein the drilling mud composition further comprises at least one additive selected from the group consisting of an antiscalant, a thickener, a deflocculant, an anionic polyelectrolyte, a lubricant, a fluid loss additive, and a weighting agent.

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• Hossain Mohammed Enamul

Classifications

• C09K8/68

  containing organic compounds · CPC title

• C09K8/05

  containing inorganic compounds only, e.g. mixtures of clay and salt · CPC title

• C09K8/20

  Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives · CPC title

• E21B21/003

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

• C09K8/845

  containing inorganic compounds · CPC title