地质统计学反演在八面河沟谷带中段的应用

Application of Geostatistics Inversion in Mid Section of Gully Region in Bamianhe Area

八面河地区岩性组合复杂、储层厚度薄且横向变化快,常规地震储层预测技术难以有效识别。近两年,针对八面河地区储层特点开展地质统计学反演,取得了较好的勘探效果。结合八面河地区地质特点,以沟谷带中段沙三上、沙四段2砂组薄储层为例,利用地质统计学反演技术开展储层预测,精细描述了沟谷带储层纵、横向分布特征,优选m4东岩性圈闭内的m4-x11井进行钻探,在沙四段2、4、5砂组钻遇油层9.2m/8层,取得良好勘探效果。

Conventional seismic reservoir prediction technology is not effective in Bamianhe Area due to its complex lithological combination and thin reservoir with fast lateral variation.A better exploration result has been achieved for the past two years by carrying out geostatistics inversion aiming at reservoir characteristics in Bamianhe Area.Taking thin Sand Group 2 reservoir of Upper Sha 3Member and Sha 4 Member in mid section of gully region as the research subject,this paper launches reservoir prediction based on geostatistics inversion technology.It elaborates the reservoir distribution features in lateral and vertical direction in gully region.M4-x11 well within lithologic trap in eastern M4 is selected for drilling and a good exploration result is achieved.