G-grade oilfield cement

G-grade oil well cement is a type of cement specifically used for oil well cementing engineering, characterized by high density, high compressive strength, and impermeability. Its density is usually between 1.9-2.3 g/cm ³, which is higher than that of ordinary cement. This high-density characteristic enables G-grade oil well cement to meet some special downhole environmental requirements, especially in high-pressure oil and gas reservoir cementing engineering, which performs well and can effectively resist the backflow and leakage of high-pressure oil and gas

Composition and Performance
The main components of G-grade oil well cement include minerals such as tricalcium silicate (CS), tricalcium aluminate (CA), and tetracalcium aluminate (CAF). The heavy fillers added to its formula, such as heavy mineral powder and barite, not only increase the density of cement, but also improve its compressive strength and impermeability. In addition, G-grade oil well cement also has high sulfate resistance and can maintain stable performance in harsh environments

Application scenarios
G-grade oil well cement is mainly used in oil well cementing engineering, with specific applications including:
Preventing oil and gas spillage: Due to its high-density characteristics, G-grade oil well cement can form a large cementing pressure, effectively preventing oil and gas spillage
Forming effective cement annulus isolation: can prevent cross interference of oil and gas from different layers
Suitable for cementing engineering in high-pressure oil and gas reservoirs: Especially suitable for cementing engineering in high-pressure oil and gas reservoirs, it can effectively resist the backflow and leakage of high-pressure oil and gas

Production process and quality control
The production of G-grade oil well cement requires strict control over the quality and proportion of raw materials. The main raw materials include limestone, sandstone, iron ore, and raw coal, which have strict requirements for their chemical composition and physical properties. During the production process, it is also necessary to control indicators such as f-CaO, vertical weight, and mineral composition of clinker to ensure the quality of cement