High-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil and preparation process thereof

摘要

Disclosed is a high-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil, which is prepared from 3-8 wt. % of a modified nano-inorganic additive, 3-8 wt. % of petroleum sulfonate, 10-40 wt. % of a viscosity depressant, 5-15 wt. % of an emulsifier, 2-10 wt. % of a surface wetting agent, 2-10 wt. % of a penetrant, 5-10 wt. % of a polymer modifier, and 1-8 wt. % of a catalyst, with a balance being water. Also disclosed is a preparation process for the above-mentioned high-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil. The mining additive of the present invention has the advantages of a good high-temperature resistant performance, and an excellent emulsification performance and anti-salt performance, thereby significantly improving the efficiency of production and reducing the cost of mining.

主权项

1. A high-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil, characterized in that, it is prepared from the following components by weight percentage:
3-8% of a modified nano-SiO2 with a particle size of 1-100 nm; 3-8% of a petroleum sulfonate; 10-40% of a viscosity depressant, wherein the viscosity depressant is one of fatty alcohol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether carboxylate, and allyl polyether sulfonate, or mixture of any two or more thereof in any proportion; or one of a lignosulfonate surfactant, a heavy alkyl benzene sulfonate surfactant and a branch-alkylbenzene sulfonate surfactant or mixture of any two or more thereof in any proportion; 5-15% of an emulsifier, wherein the emulsifier is one of R—C6H4O—(CH2CH2)10H, wherein R is C8-C10 alkyl; R—C6H4O—(CH2CH2)12H, wherein R is C8-C10 alkyl; R—C6H4O—(CH2CH2)18H, wherein R is C8-C10 alkyl; R—C6H4O—(CH2CH2)9H, wherein R is C12-C18 alkyl; R—C6H4O—(CH2CH2)7H, wherein R is C12-C18 alkyl; R—C6H4O—(CH2CH2)3H, wherein R is C12-C18 alkyl; or mixture of any 2 or more thereof in any proportion; 2-10% of a surface wetting agent, wherein the surface wetting agent is one of dibutyl naphthalenesulfonic acid sodium salt, polyoxyethylene alkylated ether, polyoxyethylene(20) sorbitan monooleate, polyoxyethylene(20) sorbitan monostearate, sorbitanololeate and sorbitanmonostearate or mixture of any 2 or more thereof in any proportion; 2-10% of a penetrant; 5-10% of a polymer modifier, wherein the polymer modifier is one of sorbitol, xylose, gelatin, xanthan gum, soluble starch, sodium methyl cellulose, methylcellulose which degree of polymerization is 20, hydroxyethyl cellulose, hydroxy propyl cellulose, polyethylene glycol 600, polyethylene glycol 6000, polyvinylpyrrolidone and polyvinyl alcohol or mixture of any two or more thereof in any proportion; 1-8% of a promoter, wherein the promoter is one of polyamine sodium, acrylamide, sodium sulfate, sodium sulfite, isopropyl alcohol, n-butyl alcohol, normal propyl alcohol and ethyl alcohol or mixture of any two or more thereof in any proportion; and 1-8% of a catalyst, wherein the catalyst is organic base; and a balance being water.