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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 71 — 74, November — December, 2018.
Flashing is a new problem in heavy oil production technology with steam flooding. It can cause pump air locks, pump and pump tubing damage, reduced production, and other problems. A difficulty in predicting flashing parameters involves accurate calculation of the bottomhole temperature and pressure. Based on the principles of heat transfer and fluid dynamics, we have proposed the following models: a model for the wellbore temperature distribution, a model for the stress distribution, a model for calculating the partial loss of pressure when the fluid flows through a fixed valve, and also a model for calculating the parameters for steam flooding of heavy oil, taking into account corrections for the influence of the parameters of the oil — water mixture on the steam critical temperature vs. pressure curve. Taking into account the nature of the fluid, the moisture content, the temperature and other wellbore parameters, the model permits real-time monitoring of flashing in the pump. Experiments were conducted on Jin 45-22-K281 wells. We performed a comparative analysis of the calculated and experimentally measured values. We have shown that the model for calculating flashing parameters is sufficiently accurate for the bottomhole fluid conditions. Analysis of the factors influencing the flashing effect may be useful for providing a theoretical basis for steam flooding parameters.
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Yi Wang, "Calculation and analysis of wellbore temperature distribution in the super heavy oilfield." Dissertation, China University of Petroleum (East China) (2008).
Hong-zhi Zhou, "Accuracy analysis of crude oil viscosity-temperature equation," Refining and Chemicals, 3, No. 20, 8-9 (2009).
Shu-chu Feng, Kui-chang Guo, and Xue-min Wang, Oil and Gas Gathering, Petroleum University Press, Beijing (2004), pp. 54-55.
Jun Xie, "Calculation of the bottom pressure of oil wells by calculus," Journal of Shandong Inst. of Min. & Tech., 20-23 (2003).
Yue-ming Chen, Thermal Recovery of Heavy Oil, University of Petroleum Press, Dongying (1996), pp.136-153.
Dan Xiao, "Calculation method research and application of two-phase vertical wellbore temperature," Dissertation. China University of Petroleum (East China) (2007).
Hai-xiong Tang. Jun-bin Zhang, and Tang-qing Wang, "Temperature profile prediction of offshore high-temperature wells borehole." Journal of Daqing Petroleum Institute, 34, No. 3, 96-100 (2010).
Hai-xiong Tang, Jun-bin Zhang. and Tang-qing Wang, "Nonlinear borehole temperature profile prediction during the process of gas production test," Journal of Daqing Petroleum Institute, 34, No. 3,101-103 (2010).
- A New Prediction Method for Flashing Parameters in Heavy Oil Production by Steam Flooding
- Springer US