Solid paraffin inhibitor and corrosion inhibitor compositions
AssigneeChampionX USA Inc.
InventorsSaugata Gon, Jeremy Moloney, Boyd Anthony Laurent, Andrew Robert Neilson
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Abstract
The present disclosure describes solid compositions comprising a paraffin inhibitor and a corrosion inhibitor. The paraffin inhibitors include polymers having various repeat units containing one or more ester moieties. The corrosion inhibitors can be imidazoline compounds, quaternary ammonium compounds, or a combination thereof. These solid compositions can be used to treat subterranean hydrocarbon-containing reservoir and can inhibit or reduce paraffin deposition in the reservoir and/or inhibit or reduce corrosion in a piece of equipment in contact with the reservoir.
Claims20
A solid composition comprising a paraffin inhibitor and a corrosion inhibitor, the paraffin inhibitor comprising a polymer having the structure corresponding to Formulae 1, 2, or 3
- wherein
- R1 and R5 are independently hydrogen, alkyl, or alkaryl;
- R2 and R3 are independently selected from C10 to C30 alkyl or C10 to C30 alkenyl;
- R4 and R6 are independently selected from alkyl or alkenyl;
- n1 is an integer from 2 to 200;
- n2 is an integer from 30-50,000;
- n3 is an integer from 50-2000;
- m is an integer from 1 to 12;
- and
- the corrosion inhibitor comprising:
- (i) an imidazoline compound having the structure of Formula 4:
- wherein
- R10 is C1 to C20 alkyl or C10 to C20 alkenyl;
- R12 and R13 are independently hydrogen or C1 to C6 alkyl;
- and
- R11 is C1 to C6 alkyl substituted with —N(R21)(R22) or —C(O)OR24,
- R21 is hydrogen or —(CO)R23;
- R22 is —(CO)R23;
- R23 is C10 to C20 alkyl or C10 to C20alkenyl;
- and
- R24 is hydrogen or C1 to C6 alkyl;
- or a tautomer thereof;
- (ii) an imidazole compound having the structure of Formula 5:
- wherein
- R10 is C1 to C20 alkyl or C10 to C20 alkenyl;
- R12 and R13 are independently hydrogen or C1 to C6 alkyl;
- and
- R11 and R14 are independently C1-C6 alkyl substituted with —N(R21)(R22) or —C(O)OR24;
- R21 is hydrogen, —(CO)R23, or C1-C6 alkyl substituted with —C(O)OR24;
- R22 is —(CO)R23 or C1-C6 alkyl substituted with —C(O)OR24;
- R23 is C10 to C20 alkyl or C10 to C20 alkenyl;
- and
- R24 is hydrogen or C1 to C6 alkyl;
- or a tautomer thereof;
- (iii) a quaternary ammonium compound having the structure of Formula 6
- wherein
- R25 is C6 to C20 alkyl or C6 to C20 alkyl wherein one or more —CH2— is replaced with —O—;
- or —(iv) a combination thereof.
Dependencies are inferred from the claim text.