Static gelatinous leaking stoppage liquid for stopping vicious leakage
A plugging liquid and gelling technology, which is applied in the field of oil drilling and cementing, can solve problems such as low plugging success rate, difficult handling, and inability to solidify, and achieve high plugging success rate, good plugging effect, and slow down the leakage rate Effect
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Embodiment 1
[0028] 1. Based on the weight of the mud, mix the following components evenly to make a bearing fluid:
[0029]
[0030] The properties of the prepared bearing fluid are shown in Table 1.
[0031] Table 1
[0032] performance parameters
Experimental conditions
Design requirements
Experimental data
Density, g / cm 3
1.15～1.25
1.22
Funnel viscosity, s
≥100
102
Static shear force, pa
75℃
≥30
31
[0033] 2. Mix the following components evenly to make plugging cement slurry:
[0034] Grade G cement + fly ash + fluid loss reducer + tartaric acid + water, of which:
[0035] The amount of fly ash is 75% of the cement mass;
[0036] The dosage of fluid loss reducer and tartaric acid is 3% and 0.2% of the total weight of G grade cement and fly ash respectively;
[0037] The fluid loss reducer used is a copolymer of acrylic acid, 2-acrylamido-2-methylpropanesulf...
Embodiment 2
[0047] 1. Based on the weight of the mud, mix the following components evenly to make a bearing fluid:
[0048]
[0049] The properties of the prepared bearing fluid are shown in Table 4.
[0050] Table 4
[0051] performance parameters
Experimental conditions
Design requirements
Experimental data
Density, g / cm 3
1.20～1.25
1.21
Funnel viscosity, s
room temperature
≥90
96
Static shear force, pa
95℃
≥30
33
[0052] 2. Mix the following components evenly to make plugging cement slurry:
[0053] Grade G cement + fly ash + fluid loss reducer + tartaric acid + water, of which:
[0054] The amount of fly ash is 75% of the cement mass;
[0055] The dosage of fluid loss reducer and tartaric acid is 5% and 0.5% of the total weight of G grade cement and fly ash respectively;
[0056] The fluid loss reducer used is a copolymer of acrylic acid, 2-acrylamido-2-methylpropanesulfon...
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