Patent ID: 7343974

Claim:
A method for strengthening a wellbore with an exposed gelogical formation comprising the steps of: determining or estimating material properties of the exposed geoiogical formation; determining changes necessary in material properties of the exposed geologic formation to achieve desired improvements in property of the exposed geologic formation; and treating the geological formation to improve material property values by injecting a formulation that hardens in-situ to form a geosynthetic composite; wherein the formulation comprises melamine-formaldehyde resin; and wherein the melamine-formaldehyde resin is soluble in non-aqueous drilling fluids and invert emulsion drilling fluids containing C 7 to C 20 olefins, esters, paraffinic oils and blends thereof, and also soluble in diesel and mineral oils and blends thereof with C 7 to C 20 olefins, esters, and paraffinic oils.