Preparation method of horizontal well self-adaptive sand control material
A raw material, self-expanding technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of easy deformation and damage of screen pipes, easy blockage of screen pipes, easy collapse of screen pipes and well walls, etc. The effect of less sand, preventing formation collapse, and strong adaptive performance
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Embodiment 1
[0026] Embodiment 1 The preparation method of self-expanding polyurethane material
[0027] Take 44 parts of bisphenol A polyether diols with a hydroxyl value of 200, add powdered sodium chloride accounting for 9% by mass, and stir to completely disperse the sodium chloride in the bisphenol A polyether diols , then add 1.59 parts of triethanolamine, 0.37 parts of deionized water, 1 part of stabilizer β-8532, 7 parts of pore opening agent Ortegol 501 and 0.04 parts of catalyst stannous octoate. After stirring evenly, add 37 parts of PM200 and stir rapidly for about 10s , and then pour the mixture into a mold, place it in a 60°C oven for reaction and aging for 6 hours, then place it in a 120°C oven for aging for 2 hours, and finally remove the mold. The cell size of the sand control material is measured to be 510um; the volume expansion rate at 100°C is 270%; the recovery rate is 99.1%; the permeability is 193×10 -3 μm 2 ; Compressive strength 1.8MPa.
Embodiment 2
[0028] Embodiment 2 The preparation method of self-expanding polyurethane material
[0029] Take 42 parts of bisphenol A polyether diols with a hydroxyl value of 200, add powdered sodium chloride accounting for 9% by mass, and stir to completely disperse the sodium chloride in the bisphenol A polyether diols , then add 1.5 parts of triethanolamine, 0.3 parts of deionized water, 0.9 parts of stabilizer β-8532, 8 parts of cell opener Ortegol 501 and 0.04 parts of catalyst stannous octoate, stir well, add 37 parts of PM200 and stir rapidly for about 10s , and then pour the mixture into a mold, place it in a 60°C oven for reaction and aging for 6 hours, then place it in a 120°C oven for aging for 2 hours, and finally remove the mold. The cell size of the sand control material is measured to be 570um; the volume expansion rate at 95°C is 110%; the recovery rate is 99.8%; the permeability is 200×10 -3 μm 2 ; Compressive strength 1.3MPa.
Embodiment 3
[0030] Embodiment 3 The preparation method of self-expanding polyurethane material
[0031] Take 41 parts of bisphenol A polyether diols with a hydroxyl value of 200, add powdered sodium chloride accounting for 8.5% by mass, and stir to completely disperse the sodium chloride in the bisphenol A polyether diols , then add 1 part of triethanolamine, 0.35 parts of deionized water, 0.8 parts of stabilizer β-8532, 6.5 parts of cell opener Ortegol 501 and 0.03 parts of catalyst stannous octoate, stir well, add 36.5 parts of PM200 and stir rapidly for about 10s , and then pour the mixture into a mold, place it in a 60°C oven for reaction and aging for 6 hours, then place it in a 120°C oven for aging for 2 hours, and finally remove the mold. The measured cell size of the sand control material is 440um; the volume expansion rate at 90°C is 400%; the recovery rate is 99.9%; the permeability is 180×10 -3 μm 2 ; Compressive strength 1.7MPa.
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