Cementitious composition for the cementation of oil wells
AssigneesEniricerche S.p.A., AGIP S.p.A.
InventorsFausto Miano, Giuseppe Calloni, Nevio Moroni, Armando Marcotullio
Life of this patent
Estimating the term…
Abstract
A cementitious composition for oil well cementation able to prevent fluid migration comprises water, hydraulic cement, surfactant or organic dispersant, and carbon black.
Claims10
A cementitious composition for oil well cementation able to prevent fluid migration, consisting essentially of water, hydraulic cement and carbon black, this latter dispersed with the aid of a surfactant or an organic dispersant, the carbon black quantity varying from 2 to 20 parts per 100 parts of the hydraulic cement w/w.
A method for oil well cementation, consisting of positioning the cementitious composition in accordance with any of the preceding claims within the interspace between the well wall and the lining pipe and causing it to harden therein.
Dependencies are inferred from the claim text.