Porous composites containing hydrocarbon-soluble well treatment agents and methods for using the same
First Claim
1. A composite comprising a porous particulate and a hydrocarbon-soluble well treatment agent wherein the porosity and permeability of the porous particulate is such that the hydrocarbon-soluble well treatment agent is absorbed into the interstitial spaces of the porous particulate material and further wherein the composite is prepared by the addition of the well treatment agent in an organic solvent to the porous particulate and the porous particulate is an aluminosilicate, silicon carbide, alumina or silica-based material.
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Abstract
Composites containing a hydrocarbon-soluble well treatment agent may be supplied to a well using a porous particulate. Such well treatment agents may for example inhibit the formation of paraffins, salts, gas hydrates, asphaltenes and/or other deleterious processes such as emulsification (both water-in-oil and oil-in-water). Further, other well treatment agents include foaming agents, oxygen scavengers, biocides and surfactants as well as other agents wherein slow release into the production well is desired.
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Citations
17 Claims
- 1. A composite comprising a porous particulate and a hydrocarbon-soluble well treatment agent wherein the porosity and permeability of the porous particulate is such that the hydrocarbon-soluble well treatment agent is absorbed into the interstitial spaces of the porous particulate material and further wherein the composite is prepared by the addition of the well treatment agent in an organic solvent to the porous particulate and the porous particulate is an aluminosilicate, silicon carbide, alumina or silica-based material.
- 8. A composite comprising a porous proppant and a hydrocarbon-soluble oilfield chemical well treatment agent, the porosity of the porous particulate being no greater than 30% and sufficient to at least partially absorb into its interstitial spaces the hydrocarbon-soluble oilfield chemical well treatment agent.
Specification