An epoxy-phenolic system water blocking agent used in oil and gas field exploitation
A technology of oil and gas field and water shutoff agent, which is applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of water outlet section plugging, etc., and achieve the advantages of reducing adverse effects, high strength after curing, and wide applicable temperature range Effect
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Embodiment 1
[0046] Melt and mix 45 parts of bisphenol F epoxy resin and 30 parts of novolak resin, add 0.03 parts of imidazole accelerator and 30 parts of methanol, and stir well. To simulate the underground curing environment, a hydrothermal kettle was used as the reaction vessel. Pour the resin slurry into a hydrothermal kettle filled with distilled water, seal it and cure it at 130°C.
[0047] Performance test: The epoxy resin slurry prepared in Example 1 has a viscosity of 48.5 mPa.s measured at 25° C., a curing time of 5 hours, and a compressive strength of 85 MPa.
Embodiment 2
[0049] Melt and mix 45 parts of bisphenol F epoxy resin and 30 parts of novolac resin, add 0.01 part of imidazole accelerator and 30 parts of methanol, and stir well. To simulate the underground curing environment, a hydrothermal kettle was used as the reaction vessel. Pour the resin slurry into a hydrothermal kettle filled with distilled water, seal it and cure it at 130°C.
[0050] Performance test: The epoxy resin slurry prepared in Example 2 has a viscosity of 48.5 mPa.s measured at 25° C., a curing time of 7 hours, and a compressive strength of 82 MPa.
Embodiment 3
[0052] Melt and mix 45 parts of bisphenol F epoxy resin and 30 parts of novolak resin, add 0.05 parts of imidazole accelerator and 30 parts of methanol, and stir well. To simulate the underground curing environment, a hydrothermal kettle was used as the reaction vessel. Pour the resin slurry into a hydrothermal kettle filled with distilled water, seal it and cure it at 130°C.
[0053] Performance test: The epoxy resin slurry prepared in Example 3 has a viscosity of 48.5 mPa.s measured at 25° C., a curing time of 3 hours, and a compressive strength of 90 MPa.
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