A special sealing packing applied to the wellhead of the pumping unit under the condition of high water-cut production fluid
A technology of sealing packing and produced fluid, applied in the directions of sealing/isolation, earth-moving drilling, wellbore/well components, etc., can solve the problems of water leakage, poor sealing effect of wellhead packing box, etc. Effect
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Embodiment 1
[0026] (1) Heat 15 kg of rubber particles, 5 kg of bentonite, and 5 kg of SAP resin in agitator A to 45-50°C in proportion, and send them into the agitator for continuous pre-mixing;
[0027] (2) Heat 5kg of 46-58# industrial paraffin to 80-90°C, add it into the mixer A, mix it with the pre-mixed raw materials, continue to stir until it is completely absorbed and mixed, and at the same time continue to cool down to 40-50°C ;
[0028] (3) Heat 5 kg of vinyl chloride copolymer resin, 1 kg of polyurethane foaming agent, 2 kg of epoxy resin, and 0.5 kg of curing agent isocyanate to 45-50 °C in the mixer B, stir for 15-30 min, and pour in talc powder 5kg is mixed and moved to A mixer to continue stirring for 30-60min;
[0029] (4) The above-mentioned mixed material is poured into a long groove-shaped mold with a preset release agent, and it can be taken out after 24 hours after it is basically solidified.
Embodiment 2
[0031] (1) Heat 45kg of rubber particles, 15kg of bentonite, and 15kg of SAP resin in agitator A to 45-50°C in proportion, and send them into the agitator for continuous pre-mixing;
[0032] (2) Heat 15 kg of 46-58# industrial paraffin to 80-90°C, add it into the mixer A, mix it with the pre-mixed raw materials, continue to stir until it is completely absorbed and mixed, and at the same time continue to cool down to 40-50°C ℃;
[0033] (3) Heat 10kg of vinyl chloride copolymer resin, 2kg of polyurethane foaming agent, 5kg of epoxy resin, and 1kg of curing agent isocyanate to 45-50°C in mixer B, stir for 15-30min, pour 10kg of talc powder into the mixture After uniform, move to A mixer and continue to stir for 30-60min;
[0034] (4) Pour the mixed material into a long groove-shaped mold with a preset release agent, and wait for 24 hours to basically solidify before use.
[0035] The special sealing packing applied to the wellhead of the pumping unit prepared in Example 1-2 un...
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