Abstract :
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
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Flashing is a new problem in the production process of heavy oil steam flooding production wells, and it may cause pump air lock, tubing and pump damage, the amount of fluid production drop and other problem. But the difficult point of the flashing prediction is the temperature and pressure calculation of the bottom accurate or not. Based on the heat transfer, fluid Mechanics Computation establish wellbore temperature distribution model, stress distribution model, partial loss of pressure drop calculation model when the liquid flows fixed valve pump, combining the oil-water mixture correction of saturated steam critical temperature — pressure curve, establishing a heavy steam flooding production Wells braising prediction model. According to the fluid, moisture content, temperature and other production and wellbore structure parameters on the bottom and flashing situation inside pump achieves real-time monitoring. Test was carried out by Jin 45–22–K281 Wells, for example, through the comparative analysis of calculation results and the measured results, prove flashing prediction model can accurately forecast for bottom fluid. At the same time, the influencing factors of flashing is analyzed, may provide theoretical basis for prevention of flashing.
