关键词: 稠油油藏, 水平井, 蒸汽吞吐, 采油参数, 非等温流入动态, 数学模型

Abstract: A coupling inflow performance model for describing the flow in the non-isothermal reservoir and the variable mass flow and temperature in horizontal well-bore was developed,on the basis of Marx-Langenheim heating theory and the 3D steady potential distribution in different types of reservoirs.The horizontal well-bore was divided into several discrete intervals with different flow rate and temperature under the supposition of different temperature distribution along the horizontal well bore.This model can be used to calculate the production and pressure distributions along the horizontal well-bore under the different temperature distribution and to analyze the factors affecting inflow performance,such as pressure drop,temperature distribution and length of horizontal section.The calculation results show that the non-isothermal condition along the horizontal well-bore can greatly affect the inflow performance.The pressure drop increased and the production capacity in the horizontal well-bore decreased with the increase of temperature difference between two ends of the horizontal section in a horizontal well.

Key words: heavy oil reservoir, horizontal well, steam soak, production parameters, non-isothermal inflow performance, mathematical model