Cement Class G-Type HSR is another type of cement that uses base cement from the ground up to a depth of 8,000 feet. In the production process of Cement Class G-Type HSR, except for calcium sulfate, no other material is used as an additive during and after wear. Hence, this cement is known as low strength cement or HSR.
Cement Class G-Type HSR is used for physical and chemical protection of oil and gas extraction pipes against pressures caused by ground layers and attacks of destructive substances in soil and groundwater. This cement is produced according to the American API standard and one of the characteristics of a good oil well cement is its low viscosity and high pumping capability. Among the different kinds of this type of cement, we can mention the two main types of medium sulfate resistance (MSR) and high sulfate resistance (HSR).
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