Process for sand and proppant consolidation
AssigneeOil Chem Technologies
InventorsPaul Daniel Berger, Christie Huimin Berger
Life of this patent
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Abstract
A process for consolidating sand, proppant and other suspended particles present in a subterranean reservoir using an aqueous emulsion particle consolidation system is described. Surfactants with cloud points at or below the reservoir temperature are used to make a low viscosity aqueous external emulsion system with resin and curing agent as the internal phase. As the surfactant reaches its cloud point, it loses its emulsification ability and releases the resin and curing agent to consolidate the sand. The aqueous phase of the system then functions as a spacer to maintain the permeability needed for oil and gas production without additional post flush required.
Claims6
A process for the consolidation of particles that includes preparing an aqueous emulsion particle consolidation composition containing:
- a. one or more surfactants having a cloud point at or below the reservoir temperature,
- b. one or more resins,
- c. one or more curing agents,
- e. an aqueous solvent,
- dissolving the one or more surfactants in the one or more resins adding the aqueous solvent to form a water external emulsion, adding one or more curing agents, introducing the composition into a subterranean reservoir;
- and;
- allowing sufficient time for the composition to cure.
Dependencies are inferred from the claim text.