油气开发阶段基于Petrel软件的碳酸盐岩储层白云石含量平面预测方法——以川东北C地区应用为例

A PETREL-based Plane Prediction Method of Dolomite Volume Percentage in Carbonate Reservoirs during Petroleum Development——A Case of Application in Area C,Northeastern Sichuan Basin

将地震与测井技术相结合,对已经进入油气开发阶段、有一定测井资料的地区,提出了地震属性约束测井插值预测碳酸盐岩储层白云石体积含量平面分布的方法。方法分三个步骤:(1)利用多矿物模型测井解释技术,计算得到单井白云石含量;(2)利用地震属性与测井白云石含量曲线进行相关分析,找出相关性最好的地震属性;(3)利用Petrel软件的Convergent插值算法,在相关性最好的地震属性约束下,进行井间测井插值。该方法在川东北C地区进行了预测应用,效果较好。准确计算单井白云石含量和优选最相关地震属性,是该方法的关键。

For an oil field that are during petroleum development and some relative logging data are available in the field area, a new method of using seismic attribute constraint and logging interpolation between wells can be applied to predict the plane distribution of dolomite volume （%） in the reservoir. It includes three steps ： （1） Using the multi-mineral model logging interpretation technique to calculate the volume percentage of dolomite in a single well; （2） Analyzing the relativi- ty of seismic attribute with dolomite V（%） curve from logging calculation to find out the best relevant attribute; （3） Using the ＂Convergent＂ interpolation method in the PETREL software to interpolate the volume percentage of dolomite between wells under the constraint of the chosen seismic attribute. The application of this method shows good results at Area C in northeastern Sichuan Basin. An accurate calculation of volume percentage of dolomite in a single well and the choice of the best relevant seismic attribute are the two key factors for this method.