塔里木盆地缝洞型碳酸盐岩储层地震描述技术进展与需求  

Progress and Demands of Seismic Description Technology for Fracture-cavity Carbonate Reservoirs in Tarim Basin

作　　者：高宏亮[1] 范秋海[1] 段文胜[1] 李国会[1] 郑多明[1] 高莲花[1] 

机构地区：[1]中国石油塔里木油田分公司勘探开发研究院

出　　处：《岩性油气藏》2010年第F07期8-12,共5页Lithologic Reservoirs

摘　　要：针对碳酸盐岩油气藏的勘探开发工作，塔里木盆地主要集中在塔北和塔中地区的奥陶系地层．资源量预计可达（35-40）×10^8t。塔里木盆地奥陶系碳酸盐岩目的层埋藏深度在5000-7000m．岩性主要为灰岩，储层非均质性非常强。原有地震资料主频低、信噪比低、分辨率低．地震储层预测、流体检测成果精度不能完全满足非均质性油气藏“精雕细刻”的需求。近年来．塔里木油田在碳酸盐岩储层描述、地震资料处理、储层反演、裂缝预测（叠前、叠后）、缝洞定量雕刻、烃类检测方法（AVO，WVD，MDI，VVA方法）等方面开展了大量的攻关研究，取得了一系列勘探成果：缝洞钻遇率〉90%；烃类预测吻合率〉75％。尽管如此．塔里木油气勘探仍然存在诸多问题，还需要进一步攻关。At present, carbonate reservoir exploration and development in Tarim Basin focuses on Ordovician formation in Tabei and Tazhong areas with the total resources expected up to 3.5-4.0 billion tons. The target reservoir of Ordovician carbonate rock in Tarim Basin is buried in 5 000 -7 000 m, with limestone of the main lithology and strong reservoir heterogeneity. The original seismic data has low main frequency, low resolution and low S/N ratio, so the accuracy of reservoir prediction and fluid detectio can＇t meet the demands for fine description of inhomogeneous reservoirs. Recently, many studies have been conducted in Tarim Oilfield, such as carbonate reservoir description, seismic data processing, reservoir inversion, fracture prediction （pre-stack and post-stack）, quantitative description of fracture and cavity, hydrocarbon detection （AVO, WVD, MDI, VVA）. Some achievements are obtained such as fracture-cavity encountering ratio 〉90%, hydrocarbon prediction match ratio 〉75%. Nevertheless, there are still many problems to be resolved in hydrocarbon exploration.

关 键 词：碳酸盐岩 地震描述 非均质性 定量雕刻 塔里木盆地 

分 类 号：TE132.14[石油与天然气工程—油气勘探]