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Composite material for fracturing easily-drillable bridge plug in oil-gas well
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A technology for composite materials and oil and gas wells, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of drillability, chemical stability, and processing costs that have not reached a high level
Inactive Publication Date: 2017-03-22
顺泰能源科技发展有限公司
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Problems solved by technology
The self-developed composite bridge plugs in China have not reached a high level in terms of air tightness, drillability, chemical stability and processing cost, and it is urgent to realize the localization of easy-drillable composite bridge plugs
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Embodiment 1
[0022] Embodiment 1 Preparation of composite material of the present invention
[0024] Preparation process: Heat and melt the curing agent, mix it with bisphenol A epoxy resin at the same temperature, stir evenly, then add the remaining raw materials, then cure at 70-110°C for 2-4 hours, then raise the temperature to 130-170°C Cure for 3 to 5 hours at ℃ to obtain a composite material.
Embodiment 2
[0025] Embodiment 2 Preparation of composite material of the present invention
[0027] Preparation process: Heat and melt the curing agent, mix it with bisphenol A epoxy resin at the same temperature, stir evenly, then add the remaining raw materials, then cure at 70-110°C for 2-4 hours, then raise the temperature to 130-170°C Cure for 3 to 5 hours at ℃ to obtain a composite material.
Embodiment 3
[0028] Embodiment 3 Preparation of composite material of the present invention
[0030] Preparation process: Heat and melt the curing agent, mix it with bisphenol A epoxy resin at the same temperature, stir evenly, then add the remaining raw materials, then cure at 70-110°C for 2-4 hours, then raise the temperature to 130-170°C Cure for 3 to 5 hours at ℃ to obtain a composite material.
[0031] Physical property parameter table of materials used in composite bridge plugs
[0032]
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Abstract
The invention provides a composite material for a fracturing easily-drillable bridge plug in an oil-gas well. The composite material comprises the following raw materials by weight: 40 to 60 parts of bisphenol type A epoxy resin, 40 to 60 parts of aliphatic epoxy resin, 1 to 3 parts of an acid anhydride curing agent, 1 to 3 parts of a curing accelerator and 1 to 3 parts of a flexibilizer. The invention also provides a preparation method for the composite material. The composite material provided by the invention reaches an international advanced level, is resistant to high temperature and high pressure and meets needs of high-temperature deep-well construction.
Description
technical field [0001] The invention relates to a composite material for easy-drilling bridge plugs for oil and gas downhole fracturing. Background technique [0002] With the development of oil and gas fields and the continuous depletion of energy, unconventional oil and gas will become an important substitute for future oil and gas energy. Statistics show that the reserves of unconventional natural gas resources such as tight sandstone gas, shale gas and coalbed methane are higher than those of conventional natural gas. However, due to the characteristics of low porosity and ultra-low permeability of unconventional natural gas reservoirs, for such unconventional oil and gas reservoirs, multi-level and multi-stage fracturing technology is the first choice for reservoir stimulation and effective increase of single well production. At present, the commonly used multi-stage fracturing technologies at home and abroad mainly include staged fracturing technology with open hole p...
Claims
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Application Information
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