石油物探2012，Vol.51Issue(5)：493-501,9.DOI:10.3969/j.issn.1000-1441.2012.05.011
玉北地区碳酸盐岩储层地震响应特征研究
Study on seismic response characteristics of carbonate reservoir in Yubei area
摘要
Abstract
Carbonate is one of the most important targets of hydrocarbon exploration in Tarim. Ordovician carbonate in Yubei area distributes widely with large thickness,and its exploration prospect is excellent. However, the exploration degree is low. The surface is desert with rugged sand dunes and deep buried target intervals, which is characterized by strong heterogeneity,rapid longitudinal and lateral variation,unclear seismic response, so the reservoir is difficult to predict. Therefore, by integrating multi-logging and core data, the reservoirs were classified. By crossplot analysis, the petrophysi-cal characteristics of reservoirs and host rock were analyzed. By seismic attributes extraction and forward modeling, the seismic responses of carbonate reservoirs were studied, and some seismic attributes were identified as the sensitive parameters for reservoir prediction (wave impedance, amplitude, amplitude variation ratio, coherence). Caves larger than 10 m shows strong-amplitude string reflection, which can be predicted by using conventional seismic data volume for extracting amplitude and its variation ratio. Fractured and cavern reservoirs to some thickness and scale may lead to obvious variation of seismic amplitude, which can be effectively predicted by utilizing conventional seismic data volume for extracting amplitude , its variation ratio and coherent attribute combining with wave impedance inversion.关键词
碳酸盐岩/储层预测/地震响应特征/溶洞/裂缝Key words
carbonate rock/ reservoir prediction/ seismic response/ cave/ fracture分类
天文与地球科学引用本文复制引用
张旭光..玉北地区碳酸盐岩储层地震响应特征研究[J].石油物探,2012,51(5):493-501,9.基金项目
国家科技重大专项(2011ZX05049-001-002)资助. （2011ZX05049-001-002）
