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弹性阻抗反演
相关语句
  elastic impedance inversion
     Elastic impedance inversion and its application
     弹性阻抗反演及应用研究
短句来源
     2. By processing and inverting synthetic seismic data and then by comparision of Zoeppritz Elastic Impedance inversion result with Elastic Impedance inversion result and Reflection Impedance inversion result, the main facters that affact Elastic Impedance inversion result and Reflection Impedance inversion result are found.
     利用人工合成地震资料,将佐普里兹弹性阻抗反演结果与弹性阻抗反演结果和反射率阻抗反演结果进行比较,并对弹性阻抗反演结果和反射率阻抗反演结果进行分析,研究影响弹性阻抗反演结果和反射率阻抗反演结果误差的主要原因。
短句来源
     So this paper proves that elastic impedance inversion is the preferable method of using pre-stack seismic data. Finally,several cases about the elastic impedance inversion are presented to be compared.
     最后就弹性阻抗反演应用的几个实例进行了比较,说明了弹性阻抗的应用范围和适用条件,要想更好地利用叠前信息必将使得声阻抗反演与弹性阻抗反演相结合、AVO分析与弹性阻抗反演相结合。
短句来源
     For the complicated reservoir description of the GD oilfield, P-wave and S-wave elastic impedance inversion was carried out using pre-stack seismic data to accurately identify the lithology of the reservoir.
     在GD油田复杂油藏描述中应用叠前纵横波弹性阻抗反演,精确地进行了油藏岩性的划分。
短句来源
     Based on analysis of elastic impedance concept,the procedure of elastic impedance inversion was presented by use of the traditional poststack seismic inversion methodology and software package because of similarity between acoustic impedance and elastic impedance definition.
     给出了弹性阻抗的概念,并根据弹性阻抗与波阻抗定义的相似性,提出了利用叠后测井约束反演方法实现弹性阻抗反演的思想。 利用Gassmann方程对渤海湾地区上第三系储层进行了流体替代模拟,得出横波速度随水饱和度变化很小,纵波速度和密度随水饱和度变化较大,对流体变化较敏感的结论。
短句来源
更多       
  inversion of flexible impedance
     The inversion of flexible impedance and the factors influence on it— base on the connolly formula
     弹性阻抗反演及影响因素分析—基于connolly公式
短句来源
     Compare with traditional inversion of wave impedance,the inversion of flexible impedance have these characteristics: abundant imformation and high resolution;
     与传统的波阻抗反演相比,弹性阻抗反演具有信息丰富、分辨率高的特点;
短句来源
  “弹性阻抗反演”译为未确定词的双语例句
     3. This thesis also discusses how noise affact seismic inversion by processing and inverting synthetic seismic data with various ratios of signal to noise.
     本文还利用不同信噪比的地震资料进行佐普里兹弹性阻抗反演,讨论噪声对地震反演结果的影响。
短句来源
     The ordinary seismic trace inversion based on the hypothesis of vertical incidence of reflected P-wave can't get reliable velocity or other lithologic information, but using prestack seismic data for stack by partial angular gathers can obtain many seismic sections with AVO characters, where the S/N ratio can also be greatly improved, so partial angular stack gathers can act as basic gathers of e-lastic impedance inversion or simultaneous inversion of P- and S-wave velocities.
     基于反射P波垂直入射假设的常规地震道反演方法不能得到可靠的速度或其他岩性信息,而利用叠前地震资料按部分角度道集叠加后,可以获得多个具有AVO特性的地震剖面,信噪比也得到显著改善,因此角度部分叠加道集可以作为弹性阻抗反演或纵、横波速度同步反演的基础道集记录。
短句来源
     The prestack elastic wave impedance inversion technique is to use data of different offsets gathers and S-wave, P-wave and density logging data for joint inversion of lithologic and oil/gas-bearing-related multi-elastic parameters for integrative recognition of reservoir nature and oil/gas-bearing ability.
     叠前弹性阻抗反演是利用不同炮检距道集数据及横波、纵波、密度等测井资料,联合反演出与岩性、含油气性相关的多种弹性参数,综合判别储层物性及含油气性。
短句来源
     In this paper,the development of elastic impedance is discussed in details,the main points of the elastic impedance are analyzed deeply,the precision of its recursive reflection coefficient,the physical meaning,connotation and extension of its formula itself,its capability of distinguishing fluid from lithology and the realization of the inversion process are explored.
     本文详细叙述了弹性阻抗的发展,对弹性阻抗的各个概念的出发点和侧重点进行了深刻的剖析; 并对弹性阻抗递推反射系数的精度、弹性阻抗公式本身的物理意义、内涵、外延以及它们对流体和岩性的区分能力、反演过程的可实现性等方面进行了讨论,得出了弹性阻抗反演是目前较好的利用叠前数据的有效方法的结论;
短句来源
     EI inversion,as a pre-stack inversion technique,compared with poststack AI inversion,includes such more information about fluids and lithology that EI inversion has developed as an effective technique for the fluid detection and recognition.
     弹性阻抗反演属于叠前反演技术,相对叠后声阻抗而言,它包含了更为丰富的储层岩性和含流体信息,并逐步发展成为一种有效的流体检测与识别技术。
短句来源
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  elastic impedance inversion
Application of joint elastic impedance inversion in the GD Oilfield
      
For the complicated reservoir description of the GD oilfield, P-wave and S-wave elastic impedance inversion was carried out using pre-stack seismic data to accurately identify the lithology of the reservoir.
      
The application of elastic impedance inversion in reservoir prediction at the Jinan area of Tarim Oilfield
      
Based on meticulous well-tie calibration, elastic impedance data volumes for 10°, 20°, and 30° emergence angles are obtained using pre-stack elastic impedance inversion.
      


Conventional seismic trace inversion method is based on the assumption of P-wave striking interface normally. However,conventional multi-channel seismic data records are oblique reflections,reflection amplitude is the average value of CDP gathers. Using conventional seismic trace inversion method,we can not obtain reliable acoustic impedance (AI) or reservoir properties. Following the idea of Patrick Connolly's (1999) Elastic Impedance (EI),I further approximated the Zoeppritz equation,derived the P-wave reflectivity...

Conventional seismic trace inversion method is based on the assumption of P-wave striking interface normally. However,conventional multi-channel seismic data records are oblique reflections,reflection amplitude is the average value of CDP gathers. Using conventional seismic trace inversion method,we can not obtain reliable acoustic impedance (AI) or reservoir properties. Following the idea of Patrick Connolly's (1999) Elastic Impedance (EI),I further approximated the Zoeppritz equation,derived the P-wave reflectivity recursive formula,suitable for the post-stack and seismic data of oblique reflection,and proposed Generalized Elastic Impedance (GEI). The key problem of forward modeling and inversion of seismic trace is solved better than ever. GEI not only include AI,but also include V P,V S and other lithological parameters. It will have high value when applied in practice. By means of GEI inversion,we can obtain more and more reliable information of fluids,porosity,sand to mud ratio and other lithological. It is helpful to interpret the pitfall in conventional seismic trace inversion and trace integration. It is also helpful to decrease non-uniqueness in conventional seismic trace inversion and improve the accuracy of reservoir prediction.

常规的地震道反演方法建立在反射P波垂直入射假设的基础上 ,而实际地震资料采集时多数是非零炮检距的 ,反射振幅是共中心点道集叠加的结果 .因此 ,利用常规地震道反演方法就不能得到可靠的波阻抗或其他岩性信息 .本文利用PatrickConnolly弹性阻抗的思想 ,通过对Zoeppritz方程的进一步简化 ,推导出适合常规叠后资料的、非零炮检距条件下纵波反射系数递推公式 ,提出了广义弹性阻抗的概念 ,解决了非零炮检距条件下 ,常规叠后地震道正反演的关键问题 .广义弹性阻抗不仅包含波阻抗 ,还包含了纵横波速度等岩性信息 ,具有很好的实用价值 .进行广义弹性阻抗的反演 ,能较常规地震道反演获得更多、更可靠的流体、孔隙度、砂泥含量等信息 ,有助于解释常规地震道反演和道积分剖面中的假象 ,降低反演的多解性 ,提高储层预测的精度 .

The post-stack inversion can’t obtain reliable impedance and other lithologic information. This paper does analysis on an area seismic data using elastic impedance inversion theory. The case indicates that elastic impedance inversion can obtain ideal inversion result and from the inverted impedance section we can extract lithologic parameters which can reflect lithology and fluid character. More information and higher revolntion than traditional invevsion are obtained through the elastic impedance inversion,...

The post-stack inversion can’t obtain reliable impedance and other lithologic information. This paper does analysis on an area seismic data using elastic impedance inversion theory. The case indicates that elastic impedance inversion can obtain ideal inversion result and from the inverted impedance section we can extract lithologic parameters which can reflect lithology and fluid character. More information and higher revolntion than traditional invevsion are obtained through the elastic impedance inversion, and it is more quantitative and fast than AVO inversion.

利用常规叠后波阻抗反演方法不能得到可靠的波阻抗和其它岩性信息.本文运用弹性阻抗反演理论对某地区的地震资料进行了分析研究,应用实例表明,用弹性阻抗反演方法可得到较理想的反演结果,且从反演所得到的波阻抗剖面中能提取出许多岩性参数,这些岩性参数能反映岩性和流体特征.与传统的波阻抗反演相比,弹性阻抗反演具有信息量丰富、分辨率高的特点;与定性的AVO反演相比,该方法达到了定量的程度,而且速度快.

Based on analysis of elastic impedance concept,the procedure of elastic impedance inversion was presented by use of the traditional poststack seismic inversion methodology and software package because of similarity between acoustic impedance and elastic impedance definition. Synthetic gathers generated by fluid replacement modeling and seismic verified the validity and reliability of this procedure forward modeling with elastic wave equation.The potential of elastic impedance in predicting lithology and fluid...

Based on analysis of elastic impedance concept,the procedure of elastic impedance inversion was presented by use of the traditional poststack seismic inversion methodology and software package because of similarity between acoustic impedance and elastic impedance definition. Synthetic gathers generated by fluid replacement modeling and seismic verified the validity and reliability of this procedure forward modeling with elastic wave equation.The potential of elastic impedance in predicting lithology and fluid properties was analyzed. In the SLG area.due to good comparability between elastic impedance log with 16 incidence angle and gamma ray log the effective reservoir can be identified by elastic impedance inversion which provides a most efficient way of seismic reservoir description.

给出了弹性阻抗的概念,并根据弹性阻抗与波阻抗定义的相似性,提出了利用叠后测井约束反演方法实现弹性阻抗反演的思想。利用Gassmann方程对渤海湾地区上第三系储层进行了流体替代模拟,得出横波速度随水饱和度变化很小,纵波速度和密度随水饱和度变化较大,对流体变化较敏感的结论。用不同饱和度的纵、横波速度和密度参数,利用波动方程正演模拟得到叠前合成道集,并提取角道集剖面,然后反演得到弹性阻抗剖面。反演结果表明,利用叠后测井约束反演方法实现弹性阻抗反演是有效和可靠的。对弹性阻抗和波阻抗与水饱和度的关系进行了对比分析,结果表明,弹性阻抗可以更好地反映流体饱和度的变化,在岩性和流体的识别和预测中具有很大的潜力。对鄂尔多斯苏里格气田的实际资料进行了处理,发现入射角为16°时弹性阻抗与自然伽马有很好的相似性,因此利用16°入射角对应的弹性阻抗可以识别有效储层。此外,通过井点弹性阻抗与自然伽马的对比分析,可以确定区分有效储层的门槛值,如苏里格地区有效储层的弹性阻抗门槛值为2900。

 
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