Using Pump Pressure Calculate Wax-layer Thickness of Mixing Light Oil Pipeline

Lukeqin oilfield is an ultra-deep heavy-oil reservoir,larger oil viscosity,larger oil density which make oil flow in well-bore very difficult,well-bore viscosity reduction in need of oil field development.Lukeqin oilfield has 126 oil wells,more than 95% of oil wells using mixing light oil to reduce oil viscosity.As the amount of light oil with high wax,pipeline wall easy to deposit wax,must be hot washed regularly in order to maintain the normal operation of pipelines.This paper consider of effect of such factors,the amount of light oil rare,pipeline length,viscosity of crude oil,pipeline elevation at both ends;using of mixing light oil pipeline pump pressure and the well-head back pressure after hit back to calculate wax-layer thickness of mixing light oil pipeline,and to guide the daily hot-wash of mixing light oil pipeline.