Guar gum is a natural polymer compound obtained from the roots of the Astragalus membranaceus plant. Guar gum has good thickening and gelling properties, and is also salt-resistant and pollution-resistant. Due to these characteristics, guar gum is widely used in the preparation of various drilling fluids.

The main role of guar gum in drilling fluids

1. Thickening effect: Guar gum can increase the content of polymer substances in drilling fluid and improve its rheological properties, making it have greater viscosity and fluidity. This can reduce the loss of liquid on the drill belt and improve drilling efficiency.

2. Filter loss reduction: Guar gum can reduce mud loss during drilling. The main function of mud in drilling is to deposit drill cuttings to maintain the stability of the drilling. Guar gum can make the mud particles more stable and less likely to run off, thereby reducing waste.

3. Suppress expansion: In some natural gas and oil wells, the formation pressure is very high, which easily causes the mud to expand during drilling. Guar gum can reduce the clay content in the mud, reduce mud expansion, and maintain the stability of the holes.

4. Improve drilling fluid performance: Guar gum has good chemical stability and high temperature resistance, and can improve the performance of drilling fluid within a certain range. For example, guar gum can maintain its stability under acidic or alkaline conditions and is less susceptible to failure.

Applications

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