Preparation And Performance Evaluation Of Anti-temperature And Salt Heavy Oil Viscosity Reducer

High viscosity and poor flow of heavy oil bring great difficulties to mining and transportation .By comparing the advantages and disadvantages of various heavy oil viscosity reduction, Thesis pointed out that the conventional emulsion viscosity reduction method cost-effective,.The Gudao oil field study the heavy oil, a comprehensive analysis of the basic properties and chemical composition and structural characteristics of heavy oil, developed for the Gudao's resistance temperature and salt type heavy oil viscosity reducer. Experimental data using mathematical correlation method to analyze the structure of Gudao heavy oil, because of high viscosity,resin content on asphalt and the transition metal elements and non-metallic elements, such as N, O, S and other higher levels result. Transition metals with N, O, S and other atoms to form complex structures reinforced resin and asphaltene molecules formed by association of hydrogen bonds, so that the heavy oil with high viscosity. Structural characteristics of heavy oil for the island to epichlorohydrin, OP-15 and anhydrous sodium sulfite as the reagent, through the optimization of synthesis conditions, the development of heavy oil that can effectively reduce the viscosity of the emulsion drop Gudao adhesive.The effects of reaction temperature, chlorination reaction reaction temperature 100℃, time is 1.5h, the acidic clay is 0.1%,m(OP-15):m(epichlorohydrin) was 1:1.05. Viscosity Reducer best conditions,The temperature of sulfonation reaction is 140℃, reaction time was 4h, m(intermediate):m (sodium sulfite) was 1:1.5. viscosity reducer strengthen the role of their polarity, weakened the heavy oil through the formation of association of hydrogen bonds, so easy to be heavy oil emulsion. Experimental results show that the developed viscosity reducer viscosity at 210℃, the following good results, salinity tolerance of up to 74000 mg?L-1. To provide for the Gudao heavy oil, when the volume of viscosity reducer plus 0.125%, the ratio was 70:30, more than 95%, After 2 hour, dehydration rate of 90% or more,.