Simulation study on low-speed oil-water two-phase flow based on thermal constant power

Existing phase holdup measurement methods are mainly based on contact measurement, and long-term monitoring is easily affected by strong downhole interference environment. In order to solve this problem, a non-contact thermal oil-water twophase flow phase holdup measurement method is proposed in this paper. The thermal conduction downhole oil-water twophase flow holdup measurement model based on graphene electric heating belt is established using fluent, and the phase distribution characteristics of oil-water two-phase flow with different moisture contents at low flow rates are analyzed. The results show that the non-contact thermal flowmeter can realize the measurement of low flow rate fluid phase holdup, which lays a foundation for the measurement of two-phase flow holdup and production logging.