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在深水勘探中,由于缺乏钻井信息,地震资料就成为储层预测和油气预测的主要手段。AVO是烃类检测最流行的方法。然而,压力、岩性和薄层效应因素却能引起假的AVO效应。在墨西哥湾深水勘探中,除了这些复杂的因素之外,还有从简单到复杂的盐岩席状体古地貌特征。整个地质时期,这些盐岩席状体对深水沉积物的聚集和运移通道产生了重大的影响。本文提出将有关孔隙流体压力、有效应力、岩性和地震波能量衰减等信息综合起来就能更好地了解油气运移的通道和封闭层的完整性。
In deepwater exploration, seismic data becomes the main means of reservoir prediction and hydrocarbon prediction because of lack of drilling information. AVO is the most popular method of hydrocarbon detection. However, pressure, lithology and lamellar effects can cause false AVO effects. In the deepwater exploration of the Gulf of Mexico, in addition to these complex factors, there are paleogeomorphic features from simple to complex salt mantle. Throughout the geological period, these salt-rock mats have had a significant impact on the accumulation and migration of deep-water sediments. This paper presents a better understanding of the integrity of channels and sealing layers for hydrocarbon migration by combining information on pore fluid pressure, effective stress, lithology and seismic energy attenuation.