Methods of cementing

A method of cementing comprising the steps of:

• preparing a cement composition comprising a hydraulic cement, a water reducing additive comprised of a sulfonated naphthalene formaldehyde condensate, a dispersing additive comprised of the condensation product of acetone, formaldehyde and sodium bisulfite, a compressive strength enhancing and set retarding additive comprising a copolymer of acrylic acid and 2-acrylamido-2-methylpropane sulfonic acid, a set accelerating additive and water present in an amount sufficient to form a pumpable slurry;
• and
• allowing said cement composition to set.

A method of cementing comprising the steps of:

• preparing a cement composition comprising a hydraulic cement, sufficient water to form a pumpable slurry, an environmentally degradable water reducing and dispersing additive, an environmentally degradable set retarding additive selected from the group consisting of sodium lignosulfonate, calcium lignosulfonate and ammonium lignosulfonate, said set retarding additive being present in an amount in the range of from about 0.0165% to about 0.165% by weight of cement in said composition, and an environmentally degradable compressive strength and set accelerating additive;
• and
• allowing said cement composition to set.

A method of cementing comprising the steps of:

• preparing a composition comprised of a single hydraulic cement, sufficient water to form a pumpable slurry, a gas present in an amount sufficient to form a foam, an environmentally degradable foaming and foam stabilizing additive, an environmentally degradable water reducing and dispersing additive, an environmentally degradable set retarding additive and an environmentally degradable compressive strength and set accelerating additive;
• and
• allowing said cement composition to set.