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US 2026/0062601 A1Published application
Method of using graphite or graphene in spacer fluid for displacing non-aqueous drilling fluid
AssigneeBaker Hughes Oilfield Operations LLC
InventorsAngela Anh Doan, Radhika Suresh, Violeta Ramos-Edwards
Life of this patent
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Abstract
A method includes injecting a spacer fluid into a wellbore that contains a non-aqueous drilling fluid, the spacer fluid including a liquid carrier and carbon particles which includes at least one of a graphite or graphene; and displacing the drilling fluid with the spacer fluid.
Claims16
A method comprising
- injecting a spacer fluid into a wellbore that comprises a non-aqueous drilling fluid, the spacer fluid comprising a liquid carrier and carbon particles comprising at least one of a graphite or graphene, wherein graphite comprises graphite nanoplates (GNPs) having a thickness of greater than 0 nanometers (nm) to about 40 nm and graphene comprises graphene nanoplatelets having less than about 10 single sheet layers;
- and
- displacing the drilling fluid with the spacer fluid.
(canceled)
A spacer fluid comprising:
- an aqueous carrier;
- 0.1 pound per barrel to about 10 pounds per barrel of graphite nanoplates, graphene nanoplatelets, or a combination thereof;
- 0.1 pound per barrel to 5 pounds per barrel of a gelling agent, the gelling agent comprising at least one of a guar gum, a hydropropyl guar, a carboxymethyl guar, a carboxymethylhydroxypropyl guar, a hydratable polysaccharide, a xanthan gum, a galactomannan gum, a glucomannan gum, a cellulose, a hydroxyethylcellulose, a carboxymethylcellulose, a hydroxypropylcellulose, a carboxymethylhydroxyethylcellulose, a poly((meth)acrylic acid), a poly((meth)acrylamide), a copolymer of (meth)acrylic acid and (meth)acrylamide, a C1-8 alkyl poly(meth)acrylate, or a clay;
- about 100 pounds per barrel to about 600 pounds per barrel of a weighting agent, the weighting agent comprising at least one of barium sulfate, silica flour, fly ash, calcium carbonate, hematite, ilmenite, or siderite, and
- about 0 gallon per barrel to about 10 gallons per barrel of a surfactant.
2 more elements
Dependencies are inferred from the claim text.