边底水稠油油藏蒸汽吞吐开采特征及开发优化数值模拟研究

研究区属于典型的边底水稠油油藏，采用蒸汽吞吐开采，目前处于开发的初期阶段。该油藏生产中出现了蒸汽吞吐产能较低、含水上升较快、采出程度较低的问题。对此研究了蒸汽吞吐的开采特征及边底水对开发的影响，并通过数值模拟开展了蒸汽吞吐开发优化研究。边底水对油藏蒸汽吞吐生产有较大影响，其吞吐开采既有稠油油藏蒸汽吞吐弹性降压开采特点，又具有特有的水驱开采特点。根据油藏地质特征，建立典型数值模拟模型，对蒸汽吞吐开发井型、井距、避水高度、注采参数（注汽速度、注汽强度、干度、焖井时间）进行了优化，为下一步改善蒸汽吞吐开发效果提供了技术支撑。

Study on steam throttling production characteristics and development optimization of edge-bottom-water heavy oil reservoirs

The study area is a typical edge-bottom-water heavy oil reservoir,which is steam-pumped and is currently in the early stages of development.The production of this reservoir has the problems of low steam throughput,rapid rise in water cut and low recovery.In this regard,the mining characteristics of steam throughput and the effect of side and bottom water on development were studied,and the optimization research of steam throughput development was carried out through numerical simulation.Bottom and bottom water have a great impact on the production of steam throughput in reservoirs.Its throughput and exploitation have the characteristics of steam pressure reduction and elasticity in heavy oil reservoirs and have unique characteristics of water flooding.Based on the geological characteristics of the reservoir,a typical numerical simulation model was established to optimize the steam well development pattern,well spacing,water avoidance height,and injection and production parameters(steam injection speed,steam injection intensity,dryness and manhole time).The next step is to provide technical support to improve the development effect of steam throughput.