Temporary blocking gel for low-pressure oil-gas well and preparation method thereof
A low-pressure technology for oil and gas wells, applied in the field of temporary plugging gel and its preparation for low-pressure oil and gas wells, which can solve the problems of temporary plugging agent pollution, killing fluid loss, etc., and achieve the effects of safe and convenient construction, low cost, and wide application range
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Embodiment 1
[0021] Embodiment 1, the raw material of the low-pressure oil and gas well temporary plugging gel includes 0.25% to 0.35% polyacrylamide, 0.2% to 0.25% oxidizing agent, 0.2% to 0.3% reducing agent, 0.1% to 0.3% % of gel breaker and the balance of water.
Embodiment 2
[0022] Embodiment 2, the raw material of the low-pressure oil and gas well temporary plugging gel includes 0.25% or 0.35% polyacrylamide, 0.2% or 0.25% oxidizing agent, 0.2% or 0.3% reducing agent, 0.1% or 0.3% % of gel breaker and the balance of water.
Embodiment 3
[0023] Embodiment 3, as a preference of the above embodiment, the polyacrylamide is an anionic polyacrylamide with a molecular weight of 10 million to 1200 and a degree of hydrolysis of 25% to 30%.
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