1. Excellent thickening performance
CMC has good thickening ability and can effectively increase the viscosity of drilling fluid. This thickening effect can enhance the suspension ability of drilling fluid, prevent drilling cuttings from settling, and ensure the cleanliness of the wellbore during drilling.
2. Good filtrate control
During the drilling process, the intrusion of filtrate can cause damage to the formation. CMC can significantly reduce the loss of filtrate and form a dense filter cake to prevent filtrate from entering the formation pores, thereby protecting the oil and gas layer and improving well wall stability.
3. Stable temperature and salinity tolerance
CMC maintains good performance in high temperature and high salt environments. During the drilling process, changes in formation temperature and salinity have a greater impact on the performance of drilling fluids. CMC's temperature and salinity tolerance make it widely used in deep wells and complex formations to ensure stable drilling fluid performance.
4. Eco-friendly
CMC is a green and environmentally friendly polymer compound that is non-toxic and harmless to the environment. In the oil drilling process, environmental protection requirements are becoming increasingly strict. The use of eco-friendly CMC is in line with the development trend of the modern petroleum industry and reduces environmental pollution.
5. Economy and ease of use
Compared with other polymer additives, CMC has a higher cost performance. In addition, CMC is easily soluble in water and easy to use. It does not require complex dissolution equipment and processes, which reduces the cost of use and the difficulty of operation.
6. Improve the rheological properties of drilling fluid
CMC can adjust the rheological properties in drilling fluids so that the drilling fluid has high viscosity at low shear rates and low viscosity at high shear rates. This shear thinning characteristic helps to improve the rock-carrying capacity of drilling fluid, reduce pump pressure loss, and improve drilling efficiency.
7. Strong anti-pollution ability
During the drilling process, drilling fluids are often contaminated by formation minerals and other impurities. CMC has strong anti-pollution ability and can maintain good performance when contaminated, ensuring the stability and effectiveness of drilling fluids.
8. Improve the stability of the well wall
CMC improves the stability of the well wall by forming a dense filter cake, reducing filtrate invasion and protecting the formation. Well wall stability is crucial to drilling safety and efficiency. The use of CMC can help reduce the risk of well wall collapse and ensure the smooth progress of drilling operations.
9. Strong compatibility
CMC has good compatibility with other drilling fluid additives and can be used with a variety of drilling fluid systems to enhance the comprehensive performance of drilling fluids. This compatibility allows CMC to play an excellent role in different types of drilling fluids and meet the needs of various complex drilling conditions.
10. Reduce frictional resistance
The lubrication performance of CMC can effectively reduce the frictional resistance between drilling tools and well walls, reduce stuck and stick-slip phenomena, and improve drilling speed and efficiency. Especially in horizontal wells and complex wells, the lubrication effect of CMC is particularly important.
As an efficient and multi-functional drilling fluid additive, CMC has many functions such as thickening, filtration control, temperature and salt resistance, environmental protection, economy, rheology adjustment, anti-pollution, well wall stabilization, strong compatibility and friction reduction. Advantage. These characteristics make CMC widely used in modern oil drilling processes, providing a strong guarantee for the smooth progress of drilling operations. In the future, with the continuous advancement of technology and the continuous optimization of drilling processes, the application prospects of CMC in drilling fluids will be broader.
Post time: Jul-23-2024