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US 10,526,520 B2Granted
Anti-bit balling drilling fluids, and methods of making and use thereof
AssigneeSaudi Arabian Oil Company
InventorsAbdullah Al-Yami, Abdulaziz A. Ba Hamdan, Saleh A. Haidary, Vikrant Wagle, Hussain AlBahrani, Ali Safran, Nasser AlHareth, Abdulla H. Awadh
Life of this patent
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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 a polyethylene glycol having the formula: H—(O—CH2—CH2)n—OH, where n is an integer from 1 to 50.
Claims6
A drilling fluid consisting of:
- water;
- from 50 to 700 lb/bbl of a clay-based component based on total weight of the drilling fluid;
- optionally including at least one or more additives selected from the group consisting of weighting agents, fluid loss control agents, lost circulation control agents, viscosifiers, dispersants, pH buffers, electrolytes, glycols, glycerols, dispersion aids, corrosion inhibitors, defoamers, starches, xanthan gum polymers, and combinations thereof, and
- a polyethylene glycol comprising Formula (I):
- where n is an integer from 1 to 50, and
- the drilling fluid has an accretion percentage of less than or equal to 18%.
3 more elements
Dependencies are inferred from the claim text.