The cost of using CMC (carboxymethyl cellulose) in the oil field can be reduced from the following aspects. Combined with the information in the search results for analysis:

1. Optimize the amount of CMC used

• Reasonable control of concentration: In oil drilling, the concentration of CMC needs to be optimized according to specific working conditions (such as temperature, pressure, well depth, etc.). By accurately controlling the amount of CMC, it is possible to reduce waste while ensuring the performance of the drilling fluid, thereby reducing costs.
• Compound use: Compound with other additives (such as high molecular polymers or surfactants). The amount of CMC can be reduced without reducing performance, further reducing costs.

2. Choose the right type of CMC

• Reasonable combination of high viscosity and low viscosity CMC: Choose the right type of CMC according to drilling needs. For example, high viscosity CMC is suitable for drilling fluids that require high strength and stability. Low viscosity CMC is suitable for scenarios with higher fluidity requirements. Reasonable selection can both meet performance requirements and reduce costs.
• Heat-resistant and salt-resistant CMC: Develop or select CMC products that are resistant to high temperatures and salts. It can reduce the amount used under complex geological conditions while improving efficiency, thereby reducing overall costs.

3. Improve production processes

• Improve raw material utilization: Improve the utilization of raw materials such as cellulose by improving production processes. Reduce the production cost per unit product.
• Develop efficient preparation technology: Research more efficient CMC preparation technology. For example, by optimizing reaction conditions or using new catalysts, improve yield and reduce costs.

4. Reduce supply chain costs

• Localized production: Establish CMC production bases in areas where oil production is concentrated to reduce transportation costs and time. At the same time, improve the stability of the supply chain.
• Raw material substitution: Explore the use of low-cost cellulose sources (such as agricultural waste) as raw materials for CMC to reduce raw material costs.

5. Optimize drilling design

• Reduce drilling fluid usage: Reduce the overall usage of drilling fluid by optimizing drilling design and processes (such as increasing drilling speed, reducing the number of cycles, etc.). Thereby reducing the consumption of CMC.
• Recycling and reuse: Develop drilling fluid recycling technology to treat and reuse used drilling fluid. Reduce CMC waste.

6. Promote technological innovation

• Develop new CMC: Develop new CMC through modification technology, such as improving its temperature resistance and salt resistance. It can be used efficiently under more complex geological conditions, thereby reducing the amount used.
• Intelligent monitoring: Use intelligent monitoring technology to monitor drilling fluid performance in real time and dynamically adjust the amount of CMC. Avoid excessive use.

7. Industry cooperation and resource sharing

• Establish a joint R&D mechanism: Cooperate with universities, research institutions and enterprises. Jointly develop low-cost, high-performance CMC products.
• Share data and experience: Share CMC usage experience and best practices through industry exchange platforms to optimize usage strategies. Reduce overall costs.

8. Policy support and market optimization

• Strive for tax incentives: Use the tax reduction and fee reduction policies provided by the government to reduce the tax burden on CMC production and use.
• Develop international markets: Increase the added value of CMC and reduce cost pressure in the domestic market through exports and technical cooperation.

Summary

By optimizing usage, selecting appropriate product types, improving production processes, optimizing supply chains and drilling designs, promoting technological innovation, and strengthening industry cooperation. The cost of using CMC in the oil field can be significantly reduced without reducing performance. These methods need to be considered comprehensively in combination with specific application scenarios and economic conditions.