The technological development and innovative application of Polymer for Fracturing

I. Overview of Hydraulic Fracturing Technology

Gas well hydraulic fracturing refers to the principle of liquid pressure transmission. On the surface, high-pressure equipment is used to inject fracturing fluid with viscosity into the oil layer at a capacity greater than that the oil layer can absorb. When the wellbore pressure gradually increases and exceeds the formation fracture pressure, one or several horizontal or vertical fractures will form in the oil layer. This technology is currently an important technical measure for increasing the production of oil and gas Wells and injection Wells at home and abroad, and plays a key role in the development of unconventional oil and gas resources.

Ii. The Evolution History of Polymers for Fracturing

With the continuous development of fracturing technology, the drag reduction and thickening materials for fracturing fluid have also undergone significant changes:

●Early stage: The guanidine gum system (such as guar gum and its derivatives) was mainly used

●Modern development: Gradually transitioning to high-performance polymer products

●Future trend: Development towards intelligent, environmentally friendly and multi-functional composite materials

Iii. Innovative polymer Series Products for fracturing

In response to different geological conditions and engineering requirements, our company has developed and produced a variety of series of polymer products for fracturing, which can be widely applied to various water quality conditions such as groundwater, river and lake water, flowback fluid, seawater, and highly mineralized water:

1.Basic functional products

●Instant drag reducer for fracturing: Its rapid dissolution property significantly improves operational efficiency

●Salt-resistant drag reducers for fracturing: Maintain stable performance in high mineralization environments

●High-efficiency thickener: Significantly increases the viscosity of fracturing fluid and enhances the sand-carrying capacity

2.Special functional products

●Acid solution thickener: Specially designed for acid fracturing to increase the viscosity of acid solution

●Composite emulsion fracturing fluid system: A multiphase system with excellent comprehensive performance

●Clean fracturing fluid system: Environmentally friendly formula, reducing formation damage

3.Products adaptable to extreme conditions

●Temperature and salt resistant fracturing fluid system: Suitable for harsh formation conditions of high temperature and high salt

●Low-temperature gel breaking and fracturing fluid system: Achieving efficient gel breaking in a low-temperature environment

Iv. Product Technical Advantages and Applications

1.It has a wide range of applications

●It is applicable to the fracturing of conventional vertical Wells and large-scale large-displacement horizontal Wells

●It can adapt to various water quality conditions ranging from fresh water to highly mineralized water

●Meet the operational requirements of strata with different temperatures (from low to high)

2.Performance advantages

●The drag reduction efficiency has increased by more than 30%

●The dissolution speed is 50% higher than that of traditional products

●The salt resistance performance can reach a salinity of 200,000mg/L

●The temperature resistance performance can reach a high-temperature environment of 180℃

3.Economic benefits

●Reduce the amount of fracturing fluid used and lower the operation cost

●Increase the output of individual Wells and extend the validity period of production increase

●Reduce formation damage and protect reservoir productivity

V. Prospects for Technological Development

Polymers for fracturing in the future will develop in the following directions:

●Intelligent responsive polymer: It can automatically adjust its performance according to the formation conditions

●Supramolecular structure design: Enhancing material efficiency while reducing usage

●Fully biodegradable products: Further enhance environmental friendliness

●Multi-functional integration: Integrates multiple functions such as drag reduction, viscosity increase, and filtration loss reduction

Vi. Conclusion

Polymers used for fracturing, as the core materials of modern hydraulic fracturing technology, their performance directly affects the fracturing effect and the productivity of oil and gas Wells. The series of polymer products for fracturing developed by our company, through continuous technological innovation, have provided efficient, economical and environmentally friendly solutions for the development of various oil and gas fields, strongly supporting the efficient development of unconventional oil and gas resources at home and abroad. With the advancement of materials science, the next generation of polymers for fracturing will play a more significant role in enhancing oil recovery and reducing development costs.