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SAGD开发效果对储层非均质性十分敏感,泥页岩夹层对双水平井SAGD的泄油通道有一定的影响。以新疆风城某SAGD区块为研究目标区,建立了表征注采井间及井对上方夹层的多因素油藏数模模型,分别模拟了不同夹层展布形态、水平及垂向位置下的SAGD开发效果并进行对比研究,得到了夹层非均质油藏SAGD部署的临界夹层展布形态特征参数。同时可通过产油曲线所展现的典型特征,反推出诸如泥页岩夹层长度以及垂向位置等夹层展布情况,从而进一步掌握目标层系的地质体系结构,对指导下一步双水平井SAGD部署,规避地质风险,实现SAGD高效开发具有重要指导意义。
The effect of SAGD development is very sensitive to reservoir heterogeneity, and the shale interbed has a certain influence on the SAGD drainage channel of bi-horizontal wells. Taking a SAGD block in Fengcheng, Xinjiang as a research target area, a multi-factor reservoir numerical model was set up to characterize the inter-well production and well-to-well intercalation, and to simulate the distribution patterns of different interlayers, horizontal and vertical positions respectively SAGD development results and comparative studies have been made of sandwich dissemination heterogeneous reservoir SAGD deployment of the critical dissemination of the distribution of morphological characteristics of parameters. At the same time, through the typical characteristics exhibited by the oil production curve, the dissemination of interlayer distributions such as the length of the shale interlayer and the vertical position can be deduced to further understand the geological structure of the target layer and guide the further SAGD deployment of the bi-horizontal well , To avoid geological risks and achieve SAGD efficient development has important guiding significance.