Petroleum-grade PAC

Basic Properties and Working Mechanism of PAC

High-purity polyanionic cellulose (PAC) is a natural polymer chemical with strong suspending and stability properties, commonly used in the production of oilfield drilling mud, acid fracturing fluids, and fracturing fluids. One of its most prominent characteristics is its excellent dispersing properties, which effectively maintain the uniform distribution of solid particles in the liquid, preventing sedimentation and thus ensuring the stability of the fracturing fluid in complex environments.

During fracturing, PAC acts as a thickener, significantly increasing the viscosity of the fracturing fluid, enhancing its proppant-carrying capacity, and improving oil and gas production. Simultaneously, PAC maintains good stability under harsh conditions such as high temperature, high salinity, and strong alkali, which is crucial for deep well operations and oilfield development under special conditions.
 

Wide Applications of PAC

1. Enhancing Fracturing Efficiency: PAC increases the rheological properties and viscosity of fracturing fluids, ensuring they can carry more proppant during fracturing operations and enhancing the conductivity of fractured rock formations. This effect makes PAC an indispensable additive in fracturing operations.

2. Suspension Stabilizer for Oil Drilling Mud: PAC acts as a stabilizer in drilling mud, preventing the sedimentation of solid particles and maintaining its good fluidity and stability. By increasing mud viscosity, PAC helps drilling operations proceed more smoothly, reducing operational risks caused by mud instability.

3. Improving Acid Fracturing Fluid Performance: Adding PAC to acid fracturing fluids can effectively control the fluid's viscosity, enhance its proppant-carrying capacity, and improve fracturing success rates. Especially in deep wells and under high temperature and high pressure conditions, PAC provides necessary support, ensuring operations are not affected by fluctuations in fluid properties.

4. Environmental friendliness and clean production: As an environmentally friendly chemical, PAC has a minimal impact on the environment during its production and application, meeting current environmental protection requirements. Therefore, PAC not only plays a role in oil extraction but also demonstrates its advantages in complying with environmental regulations.
 

In practical applications, the dosage and formulation design of polyanionic cellulose (PAC) need to be adjusted according to specific geological conditions and drilling operation requirements. Typically, the dosage of PAC is between 0.5% and 2%, which can be flexibly adjusted according to different operational needs to achieve ideal performance. PAC has a relatively low cost and good cost-effectiveness, making it widely used in the oil drilling industry.

It is important to note that the performance of polyanionic cellulose powder is affected by various factors, including temperature, pH, and salinity. In high-salt environments, the performance of PAC may be affected; therefore, appropriate formulation adjustments are necessary to ensure good performance under various conditions. With the development of technology, research on the modification of PAC is continuously deepening, and more efficient and environmentally friendly new PAC materials may emerge in the future.