东濮凹陷上古生界甜点储层地震预测技术

The technology of seismic prediction for sweet reservoir of the Upper Paleozoic
in Dongpu Depression

苏云,李令喜,孟凡冰,李传强,邓明霞,侯东濮,姚欣雨

中国石化中原油田分公司物探研究院，河南 郑州 450000 中国石化中原油田分公司，河南 濮阳 457001 中陕核工业集团
地质调查院有限公司，陕西 西安 710000

Geophysical Research Institute, Zhongyuan Oilfield Company, SINOPEC, Zhengzhou 450000, China Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China Geological Survey Co., Ltd., Sino Shaanxi Nuclear Industry Group, Xi′an 710000, China

东濮凹陷上古生界地层油气显示活跃，烃源条件较好，分布范围较广，特别是近年在文留、胡庆地区相继发现自生自储油气藏，展示了上古生界良好的勘探前景。目前上古生界油气勘探还未形成规模储量，尤其是有效储层的地震预测是上古生界勘探的卡脖子技术之一。文中以胡庆地区上古生界储层为例，首先，通过针对性资料处理提升古生界地震资料品质；然后，利用钻井试油结果、精细岩石物理分析与正演模拟，建立上古生界甜点储层识别标准及地震响应特征；最后，采用“分频振幅描河道、联合反演找砂体、频率属性检油气”等递进式技术对甜点砂岩进行预测。甜点砂岩预测结果与钻井资料吻合率达80%以上。

The Upper Paleozoic strata in Dongpu Depression have active oil and gas shows, while the conditions of the source rock are good and the source rocks are widely distributed. Especially in recent years, self-generating and self-storing oil and gas reservoirs have been discovered in Wenliu and Huqing areas, which showing a good exploration prospect of the Upper Paleozoic. However, there is no large-scale reserves which have been formed in the exploration of oil and gas in the Upper Paleozoic. Seismic prediction of reservoirs, especially effective reservoirs, is one of the "neck" technologies restricting the exploration of the Upper Paleozoic. This paper takes the Upper Paleozoic reservoir in Huqing area as an example. Firstly, the quality of Paleozoic seismic data through targeted data processing are improved; then, the effective reservoir identification criteria and seismic response characteristics of the Upper Paleozoic by using the results of drilling test are established, fine rock petrophysical analysis and forward modeling; finally, the effective sandstones are predicted by the progressive technique of frequency division amplitude tracing channel, intersection inversion for sand body and frequency attribute for oil and gas detection. The coincidence rate of effective sandstone prediction and drilling data is more than 80%.

10.6056/dkyqt202202003