升平气田营城组火山岩储层分布预测
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摘要
火山岩储层是松辽盆地北部深层天然气勘探的主要储层 ,是深层实现突破的主要目标。针对升平气田探明储量的需要 ,在钻井岩心分析的基础上 ,应用地质、测井、地震等多学科资料对升平气田白垩系营城组火山岩的波阻特征和地震反射特征进行了较全面的分析 ,并以此为基础对火山岩储层的地震振幅异常、频率异常、速度异常、地震记录特征异常进行研究 ,预测了火山岩的平面分布。在储层预测方面 ,应用基于地质模型的波阻抗反演方法识别出火山岩储层 ,实现了储层的横向预测及含气面积圈定。该方法与传统波阻抗反演方法相比 ,具有独特的优点 ,把地质、测井、地震等多元地学信息统一到模型上 ,实现了各类信息在模型空间的结合 ,提高了反演的信息使用量、信息匹配精度和反演结果的可信度。
The reservoir of the volcanic rock is the main reservoir of deep gas exploration in the north of Songliao Basin .Aim at the requirement of proved natural gas reserve in Shengping gas field, on the basis of analysis of core and application of geological, logging, seismic and many other informations, we have carefully analyzed the wave impedance characteristics and reflective characteristics of volcanic rocks of Yingcheng Formation of Cretaceous in Shengping gas field, consequently we have successfully studied the abnormity of seismic amplitude,velocity,frequency and characteristic of seismic record of volcanic rocks. We have successfully forecasted the planar distribution of volcanic rocks. Furthermore, we have applied wave impedance inversion which is based on geological model, by using of this method to identify the reservoir of the volcanic rock and forecast the reservoir transverse distribution and trap the containing gas area. This method which combined geological, logging, seismic and many other informations into a model and realized the combination of all kinds of formations in the model space, has its particular advantages compared with conventional methods, it has improved using quantity of inversion information, precision of information match and credit of the results of inversion.
The reservoir of the volcanic rock is the main reservoir of deep gas exploration in the north of Songliao Basin .Aim at the requirement of proved natural gas reserve in Shengping gas field, on the basis of analysis of core and application of geological, logging, seismic and many other informations, we have carefully analyzed the wave impedance characteristics and reflective characteristics of volcanic rocks of Yingcheng Formation of Cretaceous in Shengping gas field, consequently we have successfully studied the abnormity of seismic amplitude,velocity,frequency and characteristic of seismic record of volcanic rocks. We have successfully forecasted the planar distribution of volcanic rocks. Furthermore, we have applied wave impedance inversion which is based on geological model, by using of this method to identify the reservoir of the volcanic rock and forecast the reservoir transverse distribution and trap the containing gas area. This method which combined geological, logging, seismic and many other informations into a model and realized the combination of all kinds of formations in the model space, has its particular advantages compared with conventional methods, it has improved using quantity of inversion information, precision of information match and credit of the results of inversion.
引文
[1]邱家骧,陶奎元火山岩[M ]北京:地质出版社,1996
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