水平井开发储层地质建模

RESERVOIR GEOLOGIC MODELING FOR HORIZONTAL WELL EXPLOITATION

水平井的开发技术关键之一是建立油气藏的精细三维地质模型,据此可以确定明确的地质目标。常规的储层地质建模忽视了水平井与地层在空间上的独特配置关系,无法体现和充分利用其在表征储层属性空间展布特征上的优势。这里着重讲述了针对水平井开发的储层地质建模,引入了水平井储层概念模型,探讨了平面单元网格划分模式,并以塔河1区三叠系下油组为例建立了储层地质模型。经过对比检验,表明在该划分模式下建立起的模型更接近真实地质情况,与动静态资料吻合较好,可作为油藏数值模拟的基础,为储层改造、已探明储量的合理利用及油气藏开发方案制定,提供有力的技术支撑。该划分模式提高了储层描述的精度,实现了计算资源的合理配置,尤其适用于平面非均质性较严重的油气藏。

The key technology of horizontal well development is to establish a detailed reservoir geological model,whereby you can determine the specific geological targets.Conventional reservoir geological modeling neglects the unique disposition relationship between the horizontal wells and strata in the space,which cannot reflect and make full use of its advantage in the spatial distribution characteristics of reservoir attributes.This paper mainly tells the reservoir geological modeling for the horizontal wells,introduces the reservoir conceptual model of horizontal wells and discusses the partition mode in the graphic element grid.Based on the Triassic lower oil formation in the 1st block of Tahe oilfield as an example,the reservoir geologic model is established.Through the contrast test,it is suggested that the model based on dividing the modes is more close to the true geological condition,and is coincident with the dynamic and static data better,so that it can be used as the basis of reservoir numerical simulation.It can provide the powerful technical support to the reservoir renovation,the reasonable use of the proven reserves,and the reservoir development scheme.The mode elevated the precision of reservoir description,and realized the reasonable deployment of computing resources,especially is suitable for reservoir which is heavy heterogeneity.