XF地区中生界砂岩储层预测技术及应用

在鄂尔多斯盆地XF地区地震资料解释中，应用了高检测度的地震层序处理解释、三叠系顶部古地貌解释技术，储层横向预测采用地震相自动分类定性识别、带限地震反演、模拟退火反演、能量体衰减分析等技术。利用该方法进行优质储层预测的关键，在于用好能量体衰减分析、伯格功率谱分析和小波变换瞬时频率分析等技术，揭示储层的结构、岩性变化及储集层与油气的关系。目前，该区已完钻X1等6口井，用这些井资料检验针对长8，段储层所做的预测，砂岩厚度符合的有4口井，预测成功率为66．7％，为该区三级石油储量含油面积的圈定提供了依据。

Mesozoic sandstone reservoir prediction technique and application in XF area.

In the seismic data interpretation in XF area of Erdos basin,the following techniques are used: high precision seismic sequence processing interpretation and Triassic top palaeogeomorphic interpretation technique;the following techniques are used for lateral reservoir prediction: automatic classification and qualitative identification of seismic facies,band-limited seismic inversion,simulated annealing inversion and energy body attenuation analysis technique.The key using the method for optimum reservoir prediction is to well-use the energy body attenuation technique,Bouguer power spectrum analysis and technique of instantaneous frequency analysis by wavelet transform and to reveal the structure and lithologic variation of reservoir and relation between the reservoir and oil-gas.Currently,there are 6 drilling holes such as the X1 well etc.that have been finished,using these boreholes data to examine the prediction of Chang 8 1 segment reservoir,the results showed that there are 4 wells where the thickness of sandstone is coincident with the predicted result,the successful predicted rate is about 66.7%,which provided the basis of defining the oil-bearing area of 3-level oil reserve in the region.