Theoretical And Experimental Studies Of Collection And Transport In High Water Cut Oil Well At Normal Temperature

Because of the petroleum with high paraffin content and high solidifying point in Daqing oil field, the oil well with low produces oil temperature and colder climatic conditions in winter, in a long time the Daqing oil field adopt heating technology of collection and transport. The fuel is oil field gas and this has caused unreasonable use of valuable oil field gas. With the development of the Daqing oil field, some oil fields have already been in high water cut or ultrahigh water cut, and so it is realized to collect and transport well fluid at normal temperature in the whole year or some season. The collection and transport at normal temperature can lower cost and economize the energy. The paper study the collection and transport in high water cut oil well at normal temperature with experimental and theoretical methods. The temperature limit is confirmed by the experiment of temperature conglutinated on pipeline and filed-experiment. The limits of collection and transport radius, liquid yield, water cut are confirmed by theoretical analyse and filed-experiment. The restarted pressure gradient and safe stopping time are confirmed by room-experiment and filed-experiment. The thermodynamic model of paraffin deposition is set up, and has proved. The paper is important for the oil field to collect and transport at normal temperature, lower cost, and economize the energy.