Development of anti-bit balling fluids
First Claim
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1. A method of producing a drilling fluid, the method comprising:
- mixing water, a clay-based component, a surfactant, and optionally one or more additives selected from the group consisting of weighting agents, dispersants, pH buffers, electrolytes, glycols, glycerols, dispersion aids, corrosion inhibitors, defoamers, starches, xanthan gum polymers, and combinations thereof, to form the drilling fluid consisting of;
from 28 to 850 lb/bbl water based on the total weight of the drilling fluid;
from 28 to 720 lb/bbl of the clay-based component based on the total weight of the drilling fluid; and
from 0.02 to 180 lb/bbl of the surfactant based on the total weight of the drilling fluid, the surfactant consisting of Formula (I);
R—
(OC2H4)x—
OH
Formula (I)where R is a hydrocarbyl group having from 10 to 20 carbon atoms,x is an integer from 1 and 10, andwhere the drilling fluid has an accretion percentage of less than or equal to 15%.
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Abstract
Anti-bit balling drilling fluids and methods of making and using drilling fluids are provided. The anti-bit balling drilling fluid contains water, a clay-based component, and at least one of a surfactant having the formula: R—(OC2H4)x—OH, where R is a hydrocarbyl group having from 10 to 20 carbon atoms and x is an integer from 1 and 10, or a polyethylene glycol having the formula: H—(O—CH2—CH2)n—OH, where n is an integer from 1 to 50. Methods of making and using these drilling fluids are also provided.
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Citations
8 Claims
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1. A method of producing a drilling fluid, the method comprising:
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mixing water, a clay-based component, a surfactant, and optionally one or more additives selected from the group consisting of weighting agents, dispersants, pH buffers, electrolytes, glycols, glycerols, dispersion aids, corrosion inhibitors, defoamers, starches, xanthan gum polymers, and combinations thereof, to form the drilling fluid consisting of; from 28 to 850 lb/bbl water based on the total weight of the drilling fluid; from 28 to 720 lb/bbl of the clay-based component based on the total weight of the drilling fluid; and from 0.02 to 180 lb/bbl of the surfactant based on the total weight of the drilling fluid, the surfactant consisting of Formula (I);
R—
(OC2H4)x—
OH
Formula (I)where R is a hydrocarbyl group having from 10 to 20 carbon atoms, x is an integer from 1 and 10, and where the drilling fluid has an accretion percentage of less than or equal to 15%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification