CMC is a commonly used drilling fluid additive with many properties that are beneficial to offshore drilling operations. The following are the main applications and advantages of sodium carboxymethyl cellulose in offshore oil drilling:
Thickener and rheology control
Stabilize the well wall: CMC can effectively increase the viscosity of the drilling fluid, which helps to form a stable filter cake on the well wall to prevent the well wall from collapsing.
Control rheology: By adjusting the rheology of the drilling fluid, CMC ensures that the drilling fluid has suitable fluidity and cuttings carrying capacity, thereby improving drilling efficiency.
Reduce filtration loss
Filter cake formation: The filter cake formed by CMC on the well wall can reduce the filtration loss of the drilling fluid, protect the formation, and prevent well leakage.
Protect the formation: Reducing filtration loss also means reducing the amount of drilling fluid invading the formation, reducing formation pollution and damage.
Ecological and environmentally friendly
Environmentally friendly properties: CMC is a natural polymer compound with non-toxic and non-polluting characteristics, which meets environmental protection requirements. For offshore drilling operations, environmental protection is very important to protect the marine environment.
Biodegradable: The biodegradable properties of CMC make it safer in the marine environment and will not cause long-term impacts on the ecosystem.
Improved lubrication performance
Lubricated drill tools: CMC can improve the lubrication performance of drilling fluids, reduce friction between drilling tools and well walls, extend the life of drill bits, and improve drilling efficiency.
Reduce the risk of stuck drills: By providing better lubrication, reduce the risk of stuck drills, and improve the continuity and safety of drilling operations.
High temperature and high pressure resistance
Adapt to offshore deep wells: In offshore deep well and ultra-deep well drilling, CMC has good high temperature and high pressure resistance, can maintain stable performance under extreme conditions, and ensure the effect of drilling fluids.
Actual application cases
Offshore oilfield drilling fluids: In some offshore oilfield projects, CMC has been successfully used in drilling fluid systems to improve the performance of drilling fluids and ensure efficient and safe drilling operations.
Environmentally friendly drilling: In offshore drilling operations with strict environmental requirements, the use of CMC as an additive can reduce pollution to the marine environment and meet international environmental standards.
