地层厚度校正地震属性值方法研究及应用

Research and Application of Method for Correcting Seismic Attribute Values of Formation Thickness

摘要: 针对地震属性预测河道砂体受地层厚度影响大、沉积砂体描述精度低的问题，开展了地层厚度与河道砂体地震响应特征之间的关系研究，研究了地层厚度校正地震属性值的属性校正方法，降低了地层厚度对河道砂体预测的干扰，提高了河道砂体的预测精度。利用该方法研究区井震结合储层预测精度由过去的73.7%提高到86.2%，利用该技术指导研究区措施方案调整86井次，累计增油1.8万吨，取得较好的开发效果。该方法对指导储层预测精度具有较好的指导意义。

Abstract: In view of seismic properties, it is predicted that the river sand body is greatly affected by the formation thickness and the low precision of sedimentary sand body description. Aiming at this problem, the relationship between the thickness of the stratum and the seismic response characteristics of the channel sand body is studied. The attribute correction method for correcting seismic attribute values of formation thickness is studied. This method reduces the interference of formation thickness on river channel sand prediction. This method improves the prediction accuracy of the river sand body. Using this method to study the accuracy of reservoir-seismic combined reservoir prediction from the past 73.7% to 86.2%. The research results guide the adjustment of the measures in the study area to 86 wells. Applying this result, the cumulative oil increase is 18,000 tons. This method can improve the development of oil fields. This method has a good guiding significance for reservoir prediction accuracy.