预测井间储集层参数的相控模型法

Facies-controlled model for predicting reservoir parameters of between wells

在后期成岩作用影响不大的情况下 ,砂岩储集层物性与沉积微相之间关系密切。据此 ,针对砂岩储集层进行井间参数预测 ,研究砂岩厚度、孔隙度、渗透率的平面分布 ,提出建立井间储集层参数模型的相控模型法 ,其实质是进行带地质约束的井间参数预估 ,即由井间沉积相地质信息提取储集层参数软信息 ,增补井间约束条件 ,与井点数据共同预测井间储集层参数。该方法适用于井控不足情况下的储集层描述。图 4参

Physical properties of sandstone reservoirs have close relations with sedimentary microfacies under the conditions of no strong epidiageneses. Using sedimentary facies control of reservoir physical properties, the paper puts forward a facies-controlled model to predict physical property parameters of sandstone reservoirs between wells and to research sandstone thickness as well as lateral distribution of reservoir porosity and permeability by building a model of reservoir physical property parameters. The essence of the method is to achieve parameter prediction between wells with geological control, that is, the data of soft information of reservoir parameters (not 100% certainty) extracted from the geological information of sedimentary facies between wells are used as the supplemented controlling condition between wells to predict reservoir parameters between wells together with well-site data. The method is suitable for the reservoir discription without enough well data and is a practical and technical method of reservoir discription.