80results about How to "High viscosity reduction rate" patented technology

The invention belongs to the field of treating heavy oil, and relates to a preparation and application method of a surfactant. The surfactant is characterized by comprising the following components: 10-20% of phosphatide, 5-20% of tween-80, 5-20% of diethanolamine, 5-20% of AES (acrylonitrile), and the balance of water. The preparation method comprises the following steps: pouring the water into a reaction kettle, adding the quantitative diethanolamine and phosphatide to the reaction kettle at the same time, raising the temperature to 80 DEG C, and stirring the mixture for 2 hours at a constant temperature until the diethanolamine and the phosphatide are fully dissolved; adding the quantitative AES, raising the temperature to the range of 75 DEG C to 85 DEG C, and stirring for an hour at the constant temperature; then adding the tween-80, stirring for an hour at the constant temperature of 80 DEG C, reducing the temperature to 40 DEG C, and loading finished products into packing buckets according to measurement so as to obtain the finished products of the surfactant. The surfactant can be used as a thick oil viscosity-reducing agent, an asphalt emulsifying agent or an oil mixing agent for use. The surfactant has good emulsifiability and is wide in application field, heavy oil can be easily emulsified into the water through the surfactant, the viscosity reducing rate is as high as 99.99%, and the oil-water interfacial tension can be greatly reduced.

The invention relates to a thick-oil viscosity reducer. The thick-oil viscosity reducer contains an alkene amide polymer, an alkylaryl sulfonic acid and lower alcohol, wherein the weight ratio of the alkene amide polymer to the alkylaryl sulfonic acid to the lower alcohol is 1 to (0.5 to 3) to (1 to 5), and the carbon atom number of the lower alcohol is 1 to 4; and the thick-oil viscosity reducer is applied to the viscosity reduction of thick oil with high metal content, the viscosity of the thick oil with high metal content at the temperature of 30 DEG C is not lower than 10,000mPa.s, the content of asphaltenes is not lower than 10%, and the content of metals, i.e., Ni and V is not lower than 260mg / kg. The invention further relates to an application of the thick-oil viscosity reducer in the viscosity reduction of the thick oil with high metal content. The invention further relates to a thick-oil viscosity reduction method. The thick-oil viscosity reducer and the thick-oil viscosity reduction method, disclosed by the invention, have relatively high viscosity reduction rate to the thick oil with high metal content, and particularly, the viscosity reduction rate can reach up to 75% to 95%.

The invention provides a high molecular weight oil emulsification viscosity reducer and its preparation method and application. The high molecular weight oil emulsification viscosity reduction agent comprises the following components: acrylamide, sulfobetaine monomer and itaconic acid double long chain Ester monomer; the molar ratio of acrylamide, sulfobetaine monomer and itaconic acid double long-chain ester monomer is 65-70:30-45:1-5. The polymer heavy oil emulsifying viscosity reducer of the present invention contains a quaternary ammonium cationic structure, so that the foaming ability is strong, and the heavy oil can be effectively emulsified, and the preparation method is simple and easy to control, with few by-products, effectively solving the problem of viscosity reduction. Poor effect, poor temperature and salt resistance, and weak emulsifying effect.