Feasibility research and application of low-temperature gathering and transportation technology in oilfield
As Daqing oilfield enters the late stage of production gradually,the average water cut of pro-duced fluid is more than 95%.The existing water blending oil gathering technology will cause a large amount of heat loss in the surface gathering and transportation system.In order to realize energy conservation and con-sumption reduction in the oil and gas collection and transportation system,the critical viscous wall tempera-ture of the production of different liquid production and water-containing oil rings is obtained by adopting low-temperature gathering and transportation technology and referring to the critical viscous wall temperature empir-ical algorithm and exploration test.According to the innovative management model of"one well,one policy,one meter,one water blending",the viscous wall temperature is referred to as gathering and transportation limits to guide the work of low-temperature gathering and transportation.A total of 174 water-driven and 10 poly-driven oil wells are tested.The cumulative water blending volume is reduced by 29.6×104 m3,and the an-nual gas is saved by 103.6×104 m3,which achieves energy conservation and consumption reduction in oilfields.
low temperature gathering and transportationcritical viscous wall temperaturereturn oil pres-surereturn oil temperaturewater blending volume
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