University of Kentucky Research Foundation

Minova International Limited

Robert Benjamin Jewell

Thomas Lee Robl

Peter Shelley Mills

Robert F Rathbone

Tristana Duvallet

Anne Elizabeth Oberlink

Lev Ring

Anne Oberlink

Tristana Duvallett

Lance Cook

Thomas L Robl

A method of hydraulic fracturing of a subterranean formation having a well bore includes steps of sequentially injecting different slurries with nano, micro and then macro sized proppants generated from coal ash into the well bore in order to enhance oil and gas production from fracking. A slurry useful in the method includes (a) water, (b) coal combustion fly ash particles that have a mean particle size (d50) of about 6 microns and (c) a surfactant.

Method of multi-stage fracturing of subterranean formation and slurry for that method

A concrete and asphalt repair coating formulation includes a cement component and an aggregate component. The cement component includes a calcium sulfoaluminate cement and a Portland cement. The aggregate component includes coarse aggregates between 125-500 microns in diameter and fine aggregates between 5-62.5 microns in diameter.

Concrete repair coating

The invention provides a cementitious composition comprising a cement component comprising (i) an accelerant, (ii) a calcium sulphate source and (iii) an ettringite forming cement; an aggregate; and optionally water; wherein the cement has a minimum unconfined compressive strength of 1500 psi when tested in accordance with ASTM C1140 and/or C1604 at 15 minutes after placement; methods for its use and concrete formed from it.

Cementitious compositions

Growing community of inventors

Lexington, KY, United States of America

Robert Benjamin Jewell