Experimental Research on Low-temperature Gathering of Crude in Extra-high Water Cut Stage

摘要

In order to control production costs and reduce energy consumption, experimental research on single-pipe gathering without heating was developed which used low viscosity of produced fluid in combined station N II -2 of Sabei oilfield. Trial lasted for 3 years which showed that single-pipe gathering without heating was feasible through liquid-producing capacity, water content, standard of flow line, polymer flooding and water flooding well of flow line's lengthen, nonmetallic flow line well and small diameter flow line well, except plugging caused by oil extractor. Technology limit of single-pipe gathering without heating was given in extra-high water cut stage.