针对高含水油田开发后期地震油藏描述的目标尺度小、井网密、资料时间跨度大等特点,提出了以井控处理、井控解释和井震联合反演为核心的油藏描述技术思路,系统开展了地震油藏描述关键技术研究.总结形成了5项关键技术:①地震岩石物理分析,包括面向地震储集层预测的测井资料处理和解释,地震岩石物理建模及其应用,岩性、物性和含油气性敏感因子优选等；②井控地震资料处理,包括井控高分辨率处理和保幅处理及其质控等；③井控精细构造解释,包括井控小断层解释、井控层位追踪和井控构造成图等；④井震联合地震反演,包括确定性反演和随机反演；⑤地震约束油藏建模和数值模拟.尽管高含水油田井网密度大,但仅通过已知井对井间储集层分布进行推断,其结果仍然是不准确的,只有充分发挥密井网资料优势,通过多学科结合才能明显改善地震油藏描述的效果.%Reservoir characterization in mature oil fields with high water cut faces the challenges of small geological bodies, large well density, and data acquisition spreading over long periods. To solve these problems, systematic research on seismic reservoir characterization was carried out, and a technical solution was proposed based on well-controlled seismic data processing, well-controlled seismic data interpretation and well constrained seismic inversion. This technical route includes five suites of key technologies. (1) Rock physics analysis, including seismic reservoir-prediction-oriented well log processing and interpretation, rock physics modeling and its application, selection of parameters sensitive to lithology, physical property and hydrocarbon. (2) Well-controlled seismic data processing, including well-controlled high-resolution data processing, amplitude-preserved data processing and quality control. (3) Well-controlled fine structure interpretation, including well-controlled minor fault interpretation, well-controlled seismic horizon tracing and well-controlled structure mapping. (4) Well-constrained seismic inversion, including deterministic inversion and stochastic inversion. (5) Seismic-constrained reservoir modeling and numerical simulation. Although well density is large in a high water cut oil field, reservoirs between wells cannot be clearly defined by known well data. The effect of seismic reservoir characterization can be improved significantly only by bringing dense well data into full play and by combination of multi-disciplinary.
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