Design of a Self-Adaptive Down-Hole Layered Steam Injector and Its Application
Data(s) |
10/09/2004
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Resumo |
Layered steam injection, widely used in Liaohe Oilfield at present, is an effective recovery technique to heavy oil reserves. Which makes the steam front-peak push forward uniformly, the amount of steam injection be assigned rationally, and the effect of injection steam be obtained as expected. To maintain a fixed ratio of layered steam injection and solve the problem of nonadjustable hole diameter with the change of layer pressure in the existing injectors, a new method is proposed in this paper to design layered steam injectors based on the dynamic balance theory According to gas-liquid two-phase flow theory and heat transfer theory, the energy equation and the heat conduction equation in boreholes are developed. By analyzing the energy equilibrium of water-steam passing through the injector hole, we find an expression to describe the relation between the cross-sectional area of injector hole and the layer pressure. With this expression, we provide a new set of calculation methods and write the corresponding computer program to design and calculate the main parameters of a steam injector. The actual measurement data show that the theoretically calculated results are accurate, the software runs reliably, and they provide the design of self-adjustable layered steam injectors with the theoretical foundation. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
MULTIPHASE, NON-NEWTONIAN AND REACTING FLOWS, VOL 2, Proceedings of the Second International Symposium on Multiphase,Non-Newtonian and Reacting Rows 04, Pages: 267-271 |
Palavras-Chave | #力学 |
Tipo |
会议论文 |