Scale and corrosion inhibitor for oil field system
A scale and corrosion inhibitor, oilfield technology, applied in the field of water treatment, can solve problems such as secondary pollution of oilfield water, achieve high scale inhibition efficiency, improve scale and corrosion inhibition effect, and good compatibility.
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Embodiment 1
[0028] Embodiment 1: a kind of antiscaling and corrosion inhibitor for oil field system, its batching weight percentage is composed of:
[0029]
[0030] Wherein, the average molecular weight of the high molecular weight polymaleic anhydride is greater than 6000; the polyepoxysuccinic acid is an aqueous solution of polyepoxysuccinic acid with a mass fraction of 46%.
[0031] The steps of the preparation method of the present invention are:
[0032] (1) adding solid polymaleic anhydride and water into the reactor at room temperature and stirring for 20 to 30 minutes to fully hydrolyze the solid polymaleic anhydride;
[0033] (2) Put zinc sulfate, sodium diethyldithiocarbamate, thiourea, and disodium ethylenediaminetetraacetate in sequence in the reaction kettle, and stir for 20 to 30 minutes to fully dissolve the ingredients;
[0034] (3) Finally, polyepoxysuccinic acid is added into the reaction kettle, and the product is obtained after stirring evenly.
Embodiment 2
[0035] Embodiment 2: a kind of antiscaling and corrosion inhibitor for oil field system, its batching weight percentage is composed of:
[0036]
[0037] Wherein, the average molecular weight of the high molecular weight polymaleic anhydride is greater than 6000; the polyepoxysuccinic acid is an aqueous solution of polyepoxysuccinic acid with a mass fraction of 46%.
[0038] The steps of the preparation method of this embodiment are the same as those in Example 1.
Embodiment 3
[0039] Embodiment 3: a kind of antiscaling and corrosion inhibitor for oil field system, its batching weight percentage is composed of:
[0040]
[0041] Wherein, the average molecular weight of the high molecular weight polymaleic anhydride is greater than 6000; the polyepoxysuccinic acid is an aqueous solution of polyepoxysuccinic acid with a mass fraction of 46%.
[0042] The steps of the preparation method of this embodiment are the same as those in Example 1.
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