Overcoming the retardation of cement hydration from dispersing agents used in suspension of additives

A wellbore cementing system comprising:

• a cementitious material;
• an aqueous base fluid;
• a surfactant;
• nano-reinforcement articles selected from the group consisting of single-wall carbon nanotubes, multi-wall carbon nanotubes and combinations thereof;
• a pozzolanic material selected from the group consisting of micro-pozzolanic material, nano-pozzlanic material, and combinations thereof;
• and
• an apparatus, including a mixer and a pump, configured to:
• form a cement composition comprising:
• the cementitious material;
• and
• the aqueous base fluid;
• form a cement slurry by combining the cement composition and a nano-reinforcement particle suspension, the nano-reinforcement particle suspension comprising the surfactant, the nano-reinforcement particles selected from the group consisting of single-wall carbon nanotubes, multi-wall carbon nanotubes, and combinations thereof, and the pozzolanic material selected from the group consisting of micro-pozzolanic material, nano-pozzolanic material, and combinations thereof, wherein a rate of hydration of surfaces of the cementitious material in the cement slurry is less retarded by the surfactant than an equivalent cement slurry without pozzlanic material;
• introduce the cement composition into a subterranean formation;
• and
• allow the cement composition to set in the subterranean formation.

A method of cementing in a subterranean formation comprising:

• combining materials to form a cement composition, the materials comprising:
• a cementitious material;
• an aqueous base fluid;
• and
• a nano-reinforcement particle suspension comprising;
• a surfactant;
• nano-reinforcement particles wherein the nano-reinforcement particles are selected from the group consisting of single-wall carbon nano tubes, multi-wall carbon nanotubes, and combinations thereof;
• and
• a pozzolanic material wherein the pozzolanic material is selected from the group consisting of micro-pozzolanic material, nano-pozzolanic material, and combinations thereof, wherein the surfactant, nano-reinforcement particles, and pozzolanic material are combined together before combining with the cementitious material and aqueous base fluid;
• introducing the cement composition into a subterranean formation;
• and
• allowing the cement composition to set in the subterranean formation, wherein a rate of hydration of surfaces of the cementitious material in the cement composition is less retarded by the surfactant than an equivalent cement composition without pozzolanic material.