摘要
随着油气勘探的不断深入,勘探目标已由大型构造油气藏勘探逐渐转向岩性地层油气藏的勘探.渤海盆地浅层油气藏中岩性因素占据着重要地位,进而对于砂体特征的把握显得越来越重要.目前砂体的预测方法多采用波阻抗反演和地震属性计算,但以上两种方法往往丢失了两个基本信息,即地震信号的总体变化以及这种变化的分布规律.因此,它很难给出井位处地震信号变化的可靠评估,也就很难进行可靠的信息外推.Stratimagic波形地震相分析技术可很好地解决上述砂体预测中存在的问题.前人在油气勘探中应用波形地震相的研究大多为确定目的区沉积、物源体系,并未实际建立起岩性发育与地震波形之间的关系,本文在黄河口凹陷B井区建立高频层序地层的基础上应用波形分类,尝试在浅水三角洲沉积背景下建立岩性与地震波形之间的联系.在建立岩性发育特征与地震波形之间的模式基础上,通过波形分类精细解析,对浅水湖盆砂体精细预测得到了较好的效果,进而探讨该模式的适用条件及其对砂体预测的指导意义.
With the deepening of oil and gas exploration, exploration target has been to gradually shift from large structural hydrocarbon reservoir to lithostratigraphic reservoir. Lithologic factors of shallow oii and gas reservoirs in the Bohai Basin occupied an important position, Grasp of the sandbody characteristics was becoming increasingly important. The current prediction methods of sandbody adopted wave impedance inversion and seismic attribute calculation, however, the above two methods frequently lost two basic information that is the overall changes in the seismic signal and the distribution of this change. Therefore, it is difficult to provide a reliable assessment of seismic signal changes in well location. Then also difficult to extrapolate reliable information. Stratimagic waveform analysis of seismic facies can be a good solution to the prediction of the sandbody problems. Previous researches and applications of Waveform seismic facies in the oil and gas exploration mostly are determine the depositional systems and provenance systems, the relationship which not actually to establish between lithologic characteristic and waveforms. This article on the basis of Establishment High frequency sequence stratigraphy applies waveform classification in block B of Yellow River mouth sag; Try to establish the links between lithologic and seismic waveform at the context of shallow-water delta deposits. Based on establishment relationships of I.ithologic characteristic and seismic wave, by way of waveform classification analysis, achieve excellent results by prediction of sandbody on the shallow-water basin. Further explore the applicability of the model and its guidance for the prediction of sandbody.
出处
《地球物理学进展》
CSCD
北大核心
2013年第5期2618-2625,共8页
Progress in Geophysics
基金
十一
五"国家科技重大专项<大型油气田及煤层气开发>之课题"近海隐蔽油气勘探技术"子课题"渤海海域黄河口凹陷新近系隐蔽油气藏勘探技术研究"(2008ZX05023-002)资助
