Following-drilling plugging agent and preparation technology thereof
A plugging-while-drilling and preparation technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of softening failure, easy gelatinization of resin, etc., achieve low cost, convenient operation, and reduce leakage Effect
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Embodiment 1
[0027] The invention provides a plugging agent while drilling, comprising limestone powder, aluminum oxide, quicklime powder, sodium bentonite, expansion agent, methyl glucoside and mineral fiber, the diameter of the mineral fiber is 50-60 μm, and the length is 0.5- Between 1mm, the temperature resistance is 180°C.
[0028] Preferably, the mass ratio of the limestone powder, alumina, quicklime powder, sodium bentonite, swelling agent and methyl glucoside to the mineral fiber is 85:15.
[0029] Preferably, the mass proportions of limestone powder, alumina, quicklime powder, sodium bentonite, expansion agent and methyl glucoside are respectively: 35%, 20%, 20%, 15%, 5%, and 5%.
[0030] Preferably, the preparation process of the lost circulation agent while drilling comprises the following steps:
[0031] (1) Mixing: First mix 35kg of limestone powder, 20kg of alumina, 20kg of quicklime powder, 15kg of sodium bentonite, 5kg of expansion agent, and 5kg of methyl glucoside;
[0...
Embodiment 2
[0036] The invention provides a plugging agent while drilling, comprising limestone powder, aluminum oxide, quicklime powder, sodium bentonite, expansion agent, methyl glucoside and mineral fiber, the diameter of the mineral fiber is 40-50 μm, and the length is 0.5-50 μm. Between 1mm, the temperature resistance is 190°C.
[0037] Preferably, the mass ratio of the limestone powder, alumina, quicklime powder, sodium bentonite, swelling agent and methyl glucoside to the mineral fiber is 85:15.
[0038] Preferably, the mass proportions of limestone powder, alumina, quicklime powder, sodium bentonite, expansion agent and methyl glucoside are respectively: 34%, 19%, 21%, 14%, 6%, and 6%.
[0039] Preferably, the preparation process of the lost circulation agent while drilling comprises the following steps:
[0040] (1) Mixing: First mix 34kg limestone powder, 19kg alumina, 21kg quicklime powder, 14kg sodium bentonite, 6kg expansion agent, and 6kg methyl glucoside;
[0041] (2) Gri...
Embodiment 3
[0045] The invention provides a plugging agent while drilling, comprising limestone powder, aluminum oxide, quicklime powder, sodium bentonite, expansion agent, methyl glucoside and mineral fiber, the diameter of the mineral fiber is 30-40 μm, and the length is 0.5- Between 1mm, the temperature resistance is 180°C.
[0046] Preferably, the mass ratio of the limestone powder, alumina, quicklime powder, sodium bentonite, swelling agent and methyl glucoside to the mineral fiber is 85:15.
[0047] Preferably, the mass proportions of limestone powder, alumina, quicklime powder, sodium bentonite, expansion agent and methyl glucoside are respectively: 36%, 21%, 19%, 16%, 4%, 4%.
[0048] Preferably, the preparation process of the lost circulation agent while drilling comprises the following steps:
[0049] (1) Mixing: First mix 36kg of limestone powder, 21kg of alumina, 19kg of quicklime powder, 16kg of sodium bentonite, 4kg of expansion agent, and 4kg of methyl glucoside;
[0050]...
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