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Function and Usage of Polyacrylamide for Drilling Fluid
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1. Flocculation Effect: The product can flocculate drill cuttings and clay in drilling fluid.
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2. Lubricating Effect: The product can be absorbed on the surface of metal or clay particles to form liquid film to
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change friction on the solid surface into liquid frication, thereby lubricating drill bits and drills, lowering the mud
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cake frication coefficient, and reducing underground accidents.
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3. Leakage Plugging Effect: The product can generate crosslinking under the effect of A 13+, Fe 3+, Ca2+ and
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other ions, a part of high molecular compound is changed from linear shape into body shapes, the product is not
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water-soluble, and can be adsorbed on the well wall to plug ground layer gaps and to prevent leakage of drilling
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fluid.
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4. Filter Loss Reducing Effect: The hydrolyzing degree of the product is higher, the hydration radicals on the
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molecular chains are more, hydration is better, and it changes flocculating agent into filter loss reducing agent.
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5. The product can form space net rack structures with clay particles in drilling fluid, the effective viscosity is
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