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US 4,547,298 AGranted
Drilling mud composition which may be converted to cement upon irradiation
AssigneeExxon Production Research Company
InventorLucille H. Novak
Life of this patent
Estimating the term…
Abstract
This application relates to a composition containing a polymeric material which may be cross-linked in the presence of a monomeric cross-linking agent upon irradiation with a nuclear source. The composition is suitable for use as a well drilling fluid prior to irradiation and as a well cement after.
Claims4
A composition suitable for use as a drilling fluid in an oil or gas well and settable into a cementitious material upon radioactive irradiation comprising:
- at least one polymeric material selected from the group consisting of:
- vinyl-, hydroxyl-, carboxy-terminated butadiene-acrylonitrile copolymers;
- polyethylene;
- poly-acrylamide;
- polybutadiene;
- hydroxyl- or carboxyl-terminated polybutadiene;
- hydroxyl-terminated epichlorohydrin polymers;
- polybutadiene oxide;
- poly-vinyl alcohol;
- or butadiene-acrylonitrile-acrylic acid copolymer,
- at least one monomeric cross-linking agent selected from the group consisting of:
- ethylene glycol diacrylate, tetra-ethylene glycol diacrylate, neopentyl glycol diacrylate, tetra-propylene glycol diacrylate, trimethylolpropane triacrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, dicyclopentenyl oxyethyl methacrylate, divinyl benzene, 1,6-hexanediol diacrylate, tripropylene glycol diacrylate, diethyleneglycol divinyl ether,
- water, and
- at least one clay.
11 more elements
Dependencies are inferred from the claim text.