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SAGD技术是开采超稠油油藏的有效技术。但D块超稠油油藏隔夹层比较发育,影响了SAGD开采的效果。为了进一步提高采收率,提出了蒸汽驱和SAGD复合开采的方式(即驱泄复合开采)来改善其效果。根据相似原理设计建立了驱泄复合开采二维比例物理模型,完成了多组比例物理模拟实验,认识了驱泄复合开采的蒸汽腔发育特点和温度场扩展情况,认识了隔夹层长度对驱泄复合开采的影响。驱泄复合开采为具有隔夹层的稠油油藏进行开发设计以及现场方案的实施提供了可靠的依据,有利于更加经济有效地开发稠油资源。
SAGD technology is an effective technique for extracting ultra-heavy oil reservoirs. However, the D block super heavy oil reservoir interbed is relatively developed, affecting the SAGD mining effect. In order to further enhance oil recovery, a combination of steam flooding and SAGD mining is proposed to improve its effectiveness. Based on the principle of similarity, a two-dimensional proportional-physical model of driven-discharge composite mining was designed and completed, and many sets of proportional physical simulation experiments were completed. The development characteristics of steam chamber and the expansion of temperature field were recognized. Impact of compound mining. Flooding and compounding exploitation provides a reliable basis for the development and design of heavy oil reservoirs with interbedded layers and the implementation of on-site programs, which is beneficial to the development of heavy oil resources more economically and effectively.