Sand-fixing and plugging-removing treatment fluid for oil well sand control in fine silt sand reservoirs, sand control treatment fluid system and sand control method using the same
A technology for treating liquid and fine silt, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as overhaul accidents, formation cold damage, and high operating costs, so as to avoid overhaul and salvage operations and meet production requirements. demand, effect of risk reduction measures
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Embodiment 1
[0046] The sand control treatment fluid system of this embodiment is composed of a pretreatment fluid, a pre-fluid, a sand-fixing and plugging-removing treatment fluid, and a displacement fluid. For: 50:10:20:10.
[0047] The pretreatment liquid is composed of the following components in mass content: 2% AE-121 cleaning agent, 98% water.
[0048] The pre-fluid is composed of the following components in mass content: 12% hydrochloric acid, 0.5% XT-05 drainage aid, 1.5% IS-130 corrosion inhibitor, 2% SCA iron ion stabilizer, 2% TH- 11 Mutual solvent, 2%NH 4 Cl, 80% water, and described hydrochloric acid is the hydrochloric acid that technical grade mass fraction is 31%.
[0049] The sand-fixing and plugging-removing treatment liquid is composed of the following components by mass content: 10% XT-68 sand-fixing and plugging-removing agent, 0.5% XT-05 drainage aid, 2% IS-130 corrosion inhibitor, 2% SCA iron ion stabilizer, 2% TH-11 mutual solvent, 1% NH 4 Cl, and the balance i...
Embodiment 2
[0053] The sand control treatment fluid system of this embodiment is composed of a pretreatment fluid, a pre-fluid, a sand-fixing and plugging-removing treatment fluid, and a displacement fluid. For: 45:12:30:15.
[0054] The pretreatment solution is composed of the following components in mass content: 2% AE-121 cleaning agent and 98% water are stirred and mixed in the liquid mixing tank.
[0055] The pre-fluid is composed of the following components in mass content: 10% hydrochloric acid, 0.5% XT-05 drainage aid, 1.5% IS-130 corrosion inhibitor, 2% SCA iron ion stabilizer, 2% TH- 11 mutual solvent, 2% NH 4 Cl and the rest of the water are evenly stirred in the mixing tank.
[0056] The sand-fixing and plugging-removing treatment liquid is composed of the following components in mass content: 12% XT-68 sand-fixing and plugging-removing agent, 0.5% XT-05 drainage aid, 2% IS-130 corrosion inhibitor, 2% SCA iron ion stabilizer, 2% TH-11 mutual solvent, 1% NH 4 Cl and the res...
Embodiment 3
[0060] The sand control treatment fluid system of this embodiment is composed of a pretreatment fluid, a pre-fluid, a sand-fixing and plugging-removing treatment fluid, and a displacement fluid. For: 60:20:25:20.
[0061] The pretreatment liquid is composed of the following components in mass content: 3.5% AE-121 type cleaning agent and 96.5% water are stirred and mixed in the liquid mixing tank.
[0062] The pre-fluid is composed of the following components in mass content: 8.0% hydrochloric acid, 1.0% XT-05 drainage aid, 0.5% IS-130 corrosion inhibitor, 1.0% SCA iron ion stabilizer, 1.8% TH- 11 mutual solvent, 1.0% NH 4 Cl and the rest of the water are evenly stirred in the mixing tank.
[0063] The sand fixing and plugging removal treatment liquid is composed of the following components in mass content: 8% XT-68 sand fixing and plugging removal agent, 1.0% XT-05 drainage aid, 1.5% IS-130 corrosion inhibitor, 1.2% SCA iron ion stabilizer, 1.0% TH-11 mutual solvent, 1.7% N...
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