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In oil extraction, drilling is the core process, and drilling fluid is a key element in this process, assisting in the smooth progress of drilling operations and ensuring the effective exploitation of oil resources.Sodium carboxymethyl cellulose (CMC) plays a crucial role in drilling fluids.&n
In oil extraction, drilling is the core process, and drilling fluid is a key element in this process, assisting in the smooth progress of drilling operations and ensuring the effective exploitation of oil resources.
Sodium carboxymethyl cellulose (CMC) plays a crucial role in drilling fluids.
CMC and Oil Drilling
Can be used as a viscosity enhancer and filtrate reducer: CMC, as a viscosity enhancer and filtrate reducer for water-based drilling fluids, can significantly increase the viscosity of the drilling fluid, reduce liquid leakage into the formation, maintain wellbore stability, and prevent collapse.
At the same time, it helps to carry and suspend drilling cuttings, making drilling operations more efficient and smooth.
Reduce friction and torque: By adjusting the amount of CMC added, the rheological properties of the drilling fluid can be effectively controlled, reducing the friction and torque between the drilling tool and the wellbore, and improving drilling efficiency.
Protecting oil and gas reservoirs from contamination: During the drilling process, CMC can promote the formation of a thin and tough filter cake layer on the wellbore, which has low permeability and can effectively prevent formation fluids from invading the wellbore, thereby protecting the oil and gas reservoirs from contamination.
In short, CMC plays multiple roles in oil drilling, promoting efficient drilling operations by increasing viscosity, reducing filtration, and optimizing rheological properties, and constructing protective layers to protect oil and gas reservoirs from pollution.
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