石油物探2017，Vol.56Issue(6)：853-862,10.DOI:10.3969/j.issn.1000-1441.2017.06.011
基于地震岩石物理分析与叠前地质统计学反演技术的齐家地区致密薄储层预测
Tight thin-bed reservoir prediction using rock physics analysis and prestack geostatistical inversion in the Qijia area
赵海波 1唐晓花 1李奎周 1杨志会 1边婧2
作者信息
- 1. 大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712
- 2. 大庆油田有限责任公司第六采油厂,黑龙江大庆163712
- 折叠
摘要
Abstract
The reservoirs of the Qingshankou formation in the Qijia area have developed tight sand oil in Songliao basin,but the reservoirs exhibit complex lithology and poor petrophysical properties.The reservoirs are thin interbed,and the distribution of the P-wave impedance of sandstone and shale under investigation overlaps to some extent.The reservoir characterization of the tight thin-bed reservoirs using crosswell seismic data faces great challenges.Moreover,"sweet spots" delineation and horizontal well placing are limited.In view of the situation,through the integrated analysis of core plug ultrasonic laboratory restlts and well logging data,a rock physics model suitable for the tight sand reservoirs of interest is defined.Under the model,a rock physics template is established,and the characterizations of different lithologies and "sweet spots" are revealed in the crossplot of the P-wave impedance and vp/vs.The results greatly support not only the geostatistical analysis in the prestack inversion procedure,but also the quantitative interpretation of the outputs of the seismic inversion.Through combining prestack AVO inversion and geostatistical modeling,a high-resolution prestack geostatistical inversion is used for tight thin-bed reservoir characterization and horizontal well optimum design in the region of interest.Results showed that the average drilling rate of oil-bearing sandstones in the five horizontal wells was above 95 ％,which verified the effectiveness of the integrated rock physics analysis and prestack geostatistical inversion for tight thin-bed reservoir prediction.关键词
致密砂岩油/地震岩石物理分析/叠前地质统计学反演/甜点/薄储层Key words
tight sand oil/rock physics analysis/prestack geostatistical inversion/"sweet spots"/thin-bed reservoir分类
天文与地球科学引用本文复制引用
赵海波,唐晓花,李奎周,杨志会,边婧..基于地震岩石物理分析与叠前地质统计学反演技术的齐家地区致密薄储层预测[J].石油物探,2017,56(6):853-862,10.
