王场油田北区储层横向预测

Lateral prediction of reservoirs in the north area of Wangchang Oilfield

王冲 陈恭洋 徐论勋

长江大学地球科学学院，湖北 荆州 434023

College of Geosciences, Yangtze University, Jingzhou 434023, China

采用Jason地震反演软件对王场油田北区储层进行横向分布预测。储层横向预测的关键是波阻抗反演，波阻抗反演综合利用了地质、钻井、测井和地震等资料，是预测描述油气藏行之有效的方法,各种基础资料品质的好坏直接关系到反演精度。文中综合研究多种资料，以波阻抗反演得到的砂体分布范围为依据，预测、寻找各油组、砂组、储层有利的含油气区；在预测的有利区范围内隐藏着岩性尖灭或构造圈闭油藏，这些地区可作为今后滚动开发的优选地区，也是今后扩展油气勘探新领域的有利地区。

In this study, Jason seismic inversion software is used to directly predict the horizontal distribution of reservoir in the north part of Wangchang Oilfield. Acoustic impedance inversion is the key of lateral prediction of reservoirs. It is an effective method for predicting and describing reservoirs by integrating geology, drilling, logging and seismic data. But the quality of those data will have a direct impact on the accuracy of inversion. According to the comprehensive study on geology, seismic, and other information inversion,we take the boundary of sand body distribution in the impedance inversion as the foundation to look for the predicting range of favorable hydrocarbon-bearing reservoir zones in various sand groups. Reservoirs of lithologic pinchout and structural closure are hidden in these favorable areas, where can be preferred rolling development areas and also be favorable areas for expanding oil and gas exploration in the future.