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US 10,767,097 B2Granted
Invert emulsion drilling fluids with fatty acid and fatty diol rheology modifiers
AssigneeSaudi Arabian Oil Company
InventorsVikrant Wagle, Abdullah Al-Yami
Life of this patent
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Abstract
Provided here are various invert emulsion drilling fluid compositions. The invert emulsion fluid is a water in oil emulsion, which can include an invert emulsifier to stabilize the water in oil emulsion, a 16 to 18 carbon carboxylic acid, a 36 carbon fatty dimer diol, a polymeric filter control agent, and an inorganic mineral including one or more of lime, calcium chloride, and barite. The invert emulsion drilling fluids can be formulated to be substantially free of clay.
Claims14
An invert emulsion drilling fluid, comprising:
- a water in oil emulsion;
- an invert emulsifier to stabilize the water in oil emulsion in an amount operable to stabilize the water in oil emulsion;
- a fatty acid mixture of C16 and C18 saturated linear alpha carboxylic acids;
- a 36 carbon fatty dimer diol;
- a filtration control agent;
- and
- an inorganic mineral including one or more of lime, calcium chloride, and barite;
- wherein the invert emulsion drilling fluid is formulated without clay.
5 more elements
Dependencies are inferred from the claim text.