Hydrogen-bonding hydrogel suitable for plugging cracks and caves
A hydrogel and hydrogen bond technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of difficult plugging, complicated well bottom, affecting construction progress, etc., achieving good elasticity, convenient and quick preparation, adaptable effect
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Embodiment 1
[0047] The raw materials of the hydrogen-bonded hydrogel 1 suitable for crack and cave plugging consist of 10g of polyvinyl alcohol PVA17-88, 20g of polyethylene glycol, 3g of diethylenetriamine, 20g of potassium chloride, 50g of limestone and 100g of water, wherein the density of the hydrogen-bonded hydrogel 1 is 1.20g / cm 3 .
Embodiment 2
[0049] The raw materials of the hydrogen-bonded hydrogel 2 suitable for crack and cave plugging consist of 10g of polyvinyl alcohol PVA17-99, 20g of polyethylene glycol, 3g of diethylenetriamine, 20g of potassium chloride, 50g of limestone and 100g of water, wherein the density of the hydrogen-bonded hydrogel 2 is 1.20g / cm 3 .
Embodiment 3
[0051] The raw materials of the hydrogen-bonded hydrogel 3 suitable for crack and cave plugging consist of 10g of polyvinyl alcohol PVA26-99, 20g of polyethylene glycol, 3g of diethylenetriamine, 20g of potassium chloride, 50g of limestone and 100g of water, wherein the density of the hydrogen-bonded hydrogel 3 is 1.20g / cm 3 .
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