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地震反演技术是储层预测的核心技术,测井约束反演是开展储层预测常用的反演技术之一。本文介绍了测井约束反演的技术原理,以滨里海盆地A油田为例,首先从岩性、测井响应和地震剖面特征三方面,对工区内储层的基本特征进行了描述。然后分析了测井约束反演中测井曲线的标准化、合成记录与标定、子波提取和建立地质模型等一些关键技术环节,结合得到的反演结果,对有利储层砂体的展布、厚度等进行初步分析,发现砂体发育的总体趋势为西南侧厚,东北侧薄。最后认为工区的西南部埋藏较深处为有利的目标区域,为该区今后的井位部署提供了重要的依据。
Seismic inversion technique is the core technology of reservoir prediction. Well logging constrained inversion is one of the commonly used inversion techniques for reservoir prediction. This paper introduces the technical principle of logging constrained inversion. Taking the oilfield A of the Caspian Basin as an example, the basic characteristics of reservoirs in the work area are described from three aspects: lithology, logging response and seismic profile features. Then, some key technologies such as standardization of logging curves, synthetic recording and calibration, wavelet extraction and geological model establishment in well logging constrained inversion are analyzed. Combining the obtained inversion results, the distribution, Thickness and other preliminary analysis found that the overall trend of sand body development is thick on the southwest side, northeast thin. Finally, it is considered that the deeper burial area in the southwestern part of the work area is a favorable target area, which provides an important basis for the future deployment of the wellsite in this area.