Well cementing methods and apparatuses

A well cementing method comprising:

• drawing a liquid from a liquid source to a liquid pump using the liquid pump;
• pumping a portion or all of the liquid to a first mixer using the liquid pump;
• and
• while pumping the portion or all of the liquid to the first mixer, simultaneously performing the following:
• supplying a cement additive to the first mixer and therein combining the cement additive and the liquid pumped to the first mixer and producing a cement additive blend;
• supplying bulk cement materials to a second mixer separate from the first mixer and therein combining the bulk materials and the cement additive blend and producing a wellbore cement;
• and
• pumping the wellbore cement into a well using a product pump.

A well cementing method comprising:

• drawing a liquid from a liquid source to a liquid pump using the liquid pump;
• pumping a portion of the liquid to a first mixer using the liquid pump;
• pumping another portion of the liquid into a tank using the liquid pump;
• while pumping the portion of the liquid to the first mixer, simultaneously performing the following:
• supplying a dry spacer polymer to the first mixer and therein combining the dry spacer polymer and the liquid pumped to the first mixer and producing a spacer polymer blend;
• adding the spacer polymer blend into the tank, the spacer polymer blend having a ratio of spacer polymer to liquid, and therein using the other portion of the liquid for decreasing the ratio of spacer polymer to liquid within the tank;
• producing a spacer from the spacer polymer blend;
• and
• pumping the spacer into a well using a product pump;
• and
• after the supplying of the spacer polymer, the adding of the spacer polymer blend, the producing of the spacer, and the pumping of the spacer and while pumping the portion of the liquid to the first mixer, simultaneously performing the following:
• supplying a dry cement additive to the first mixer and therein combining the dry cement additive and the liquid pumped to the first mixer and producing a cement additive blend;
• adding the cement additive blend into the tank, the cement additive blend having a ratio of cement additive to liquid, and therein using the other portion of the liquid for decreasing the ratio of cement additive to liquid within the tank;
• supplying a bulk cement material to a second mixer separate from the first mixer and therein combining the bulk cement material and the cement additive blend to produce a wellbore cement;
• and
• pumping the wellbore cement into the well following the spacer using the product pump.