波阻抗反演及相控砂体雕刻技术在滨5断块储层预测中的应用

The Application of Wave Impedance Inversion and Phase Control Sand Body Carving in Reservoir Forecasting of Fault Block Bin 5

滨南油田滨5断块具有砂岩较高波阻抗,泥岩较低波阻抗的特点,波阻抗成为预测砂体发育区的有效属性,通过关键井的波阻抗反演,实现了砂体的精细标定。在砂体标定的基础上,针对研究区砂体分布受沉积相带控制的特点,采用相控砂体雕刻技术对砂体进行了描述,并通过确定相应的绝对波阻抗门槛值,进行了砂体厚度的预测,提高了储层的定性识别能力。

The sandstone had the characters of high wave impedance,and mud rock had low wave impedance in Fault Block Bin 5,so the wave impedance became the effective attribute for forecasting the sandbody development,by using the wave impedance inversion of major wells,the accurate calibration of sand bodies was implemented.And on the base of the calibration,and in allusion to the characters of the sand body distribution controlled by sedimentary facies,it was described by using the technique of phase-controlled sand-body carving,the sand-body thickness was predicted by determining the corresponding and absolute wave impedance threshold value,by which the qualitative recognition ability is improved.