Composition and method of cement suspension preparation and method of oil well cement

摘要

Claim 1: A composition comprising: (i) water; (ii) an inorganic cement; and (iii) particles with a sphericity between 0.5 and 0.9 and a roundness of Krumbein between 0.5 and 0.9. Claim 7: A method for preparing a cement suspension, comprising: (i) preparing a mixture comprising water, an inorganic cement and particles with a sphericity between 0.7 and 0.9, and a Krumbein roundness between 0.7 and 0.9; and (ii) shear the mixture until the suspension becomes homogeneous, thus forming a suspension. Claim 13: A method for cementing an underground well, comprising: (i) preparing a composition comprising water,1. Inorganic cement and particles, spherical surface between 0.7 and 0.9, rounded to the nearest 0.7 and 0.9; (II) chopped until its composition becomes uniform, thus forming a suspended state; and (III) put the suspended matter into the well.