Well treatment fluids and methods utilizing nano-particles

摘要

Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, simulation fluids, and well clean-up fluids.

主权项

1. A stimulation fluid comprising particles, wherein the particles are included as proppant in the stimulation fluid, wherein the particles have three size ranges disjointed from one another, wherein a first size range includes nano-particles from about 7 nm to about 50 nm, wherein a second size range includes particles from about 0.05 microns to about 0.5 microns, and wherein a third size range includes particles from about 200 microns to about 800 microns, wherein the nano-particles consist of a particulate nano-silica and nano-boron, wherein the nano-particles are non-colloidal and coated, wherein the coating is degradable; wherein the nano-particles prevent fractures in a subterranean formation from fully closing upon the release of pressure therefrom and form conductive channels through which a fluid flows from or to the wellbore; and wherein the stimulation fluid has a density from about 12 pounds per gallon to about 20 pounds per gallon.