Slug injection-type oily sludge profile control agent, profile control method, and applications of slug injection-type oil-containing sludge profile control agent
A profile control agent and sludge technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problem of low injection intensity of sludge profile control, oily sludge plugging failure, and consolidation strength Insufficient and other problems, to achieve the effect of increasing profile control intensity, increasing success rate of profile control, and good plugging performance
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Embodiment 1
[0037] This embodiment provides a slug-type oily sludge profile control agent, which includes a slug A component, a slug B component and a slug C component; by weight percentage,
[0038] The slug A component includes 95% oily sludge, 1% polyacrylamide, 0.1% formaldehyde, 0.05% resorcinol, 0.01% oxalic acid, 0.015% sodium hydroxide and the rest water;
[0039] Described slug B component comprises 78% oily sludge, 3% sodium soil, 8% rubber powder and the water of balance;
[0040] The slug C component includes 20% oil residue, 5% cement, 2% bentonite, 0.5% sodium tripolyphosphate and the balance water.
[0041] The present invention also provides a profile control method for the above-mentioned slug-type oily sludge profile control agent. Taking the Du 813-44-93 well in Shuguang Oilfield as an example, the above-mentioned slug-type oily sludge profile control agent is injected into the oil well for profile control operation , including the following steps:
[0042] Step 1, i...
Embodiment 2
[0048] This embodiment provides a slug-type oily sludge profile control agent, which includes a slug A component, a slug B component and a slug C component; by weight percentage,
[0049] The slug A component includes 93% oily sludge, 1.2% polyacrylamide, 0.12% formaldehyde, 0.08% resorcinol, 0.015% oxalic acid, 0.02% sodium hydroxide and the balance of water;
[0050] Described slug B component comprises 80% oily sludge, 3% sodium soil, 8% elm bark powder and the water of balance;
[0051] The slug C component includes 25% oil residue, 10% cement, 4% bentonite, 1.5% sodium tripolyphosphate and the balance water.
[0052] The present invention also provides a profile control method for the above-mentioned slug-type oily sludge profile control agent. Taking the Du 813-48-K57 well in Shuguang Oilfield as an example, the above-mentioned slug-type oily sludge profile control agent is injected into the oil well for profile control operation , including the following steps:
[0053...
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