热采井不同注汽速率的储层压力场数值模拟

Numerical Simulation of Influence of Different Steam Iijection Rates on Pressure Field of Oil Reservoir in Thermal Recovery Well

在注蒸汽热采井中,注汽速率是影响油藏压力场分布的重要因素。基于油藏温度场与渗流场耦合理论,通过数值模拟的手段研究了热采井不同注汽速率对油藏压力场的影响。研究表明:注汽速率越大对储层压力的影响范围越大,而当注汽速率达到一定值后,储层压力场的影响范围增幅较小。该研究结果为油田现场选择合理的注汽速率提供了理论依据。

Steam injection rate was the important factors in influencing reservoir pressure distribution in thermal recovery well. The influence of different Steam injection rates on pressure field of oil reservoir in thermal recovery well was studied by numerical simulation based on theory of T-H coupling. The simulation results show that the greater the rate of steam injection, the greater influence sphere on pressure field. However, and when steam injection rate reached a certain value, increase of influence sphere on pressure field was small. The simulation results are verv helnful to choose reasonable the rate of steam injection in nil fields.