In order to reduce the temperature of paraffin-based crude oil,is applied low-temperature dehydration performance of the AE8051, is the good effects of high viscosity crude oil dehydration polyether polyol-based SAA and polyoxyethylene polyoxypropylene glycol ether BP28 for "coordination" recovery distribution is also applied. As result , a small amount of C-F surfactant will make the system active and increase the solubility of paraffin-based demulsifier in crude oil at low temperature FYR-015. The basic formula, which by low-temperature synthesis of a series of demulsifier samples at concentration of 200mg / L(in water) and 30% of the joint stand of the mixed oil at 40 °C, has been the relative dehydration rates of 90 minutes over 93% of the 3 a formula of low-temperature demulsifier, the dual temperature demulsifier compound obtained in the same temperature, the same dosage effect of the case of dehydration and a single dose equivalent in dosage trials are three formulations of low temperature demulsifier in 40 °C are the best dosage 100mg / L. Xuanze solid content of 55% of finished emulsion breaker formulation 5 into field use, dosage to 60 mg / L when the water content of crude oil were isolated less than 0.2%, to reach the standard of foreign crude oil output quality, extrusion sewage oil is less than 50 mg / L, water clear.
The high water content of heavy oil emulsions are O / W or W / O unstable estate, to solve the problem of heavy oil wells in the viscosity, after a large number of laboratory tests, a water-soluble drag reduction agent(DRA) with excellent drag reducing effect for high water heavy oil well is developed. The water-soluble DRA does not have combustible nature and solves also the problem of the security risk commonly used lower flash point viscosity reducing agent in paraffin oil well. The formulations and preparation method of the water-soluble drag reduction agent are introduced and the field applications are evaluated in this paper. The applications of more than 110 oil wells in Fifth Oil Production Plant in North China Oilfield have shown that the heavy oil viscosity reduction and drag reduction effects of water-soluble DRA are remarkable, and the hot wash cycle of oil well is prolonged.
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