RTM振幅(pre -和叠后)应与岩石物理性质?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 10 - t20:39:24z //www.hoelymoley.com/feeds/question/5229 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/5229 7 RTM振幅(pre -和叠后)应与岩石物理性质? 盲目的松鼠 //www.hoelymoley.com/users/3215 2015 - 07 - 21 - t14:01:38z 2015 - 11 - 14 - t16:22:12z < p >附近有巨大的隆起的图像质量和盐层下的机构(如中央深水墨西哥湾的中新世)通过使用反向迁移或RTM。我们现在可以作出准确的结构解释的地方,我们不能只看到使用基尔霍夫迁移。< / p > < p >是做一个适当的幅度分析RTM迁移数据转化为储层属性?RTM地平线振幅与岩石属性吗?< / p > < p >我想这取决于特定的供应商RTM的实现,以及加快代码所作的假设,但在其纯粹是RTM振幅友好吗?< / p > < p >请帮。任何有关这一课题的文献都是感谢。< / p > //www.hoelymoley.com/questions/5229/-/5230 # 5230 8 答案由马特·霍尔RTM振幅(pre -和叠后)应与岩石物理性质? 马特·霍尔 //www.hoelymoley.com/users/28050 2015 - 07 - 21 - t16:29:42z 2015 - 07 - 21 - t16:29:42z < p > <强>这取决于实现,但基本扭转时间偏移振幅通常不友好。< /强> < / p > < p >问题是理想的成像条件-反褶积是很难应用在时域或不稳定。所以使用互相关,这失去了相对振幅信息…所以振幅不再必然与反射系数有关。因为这是反演的假设(例如AVO反演),一个RTM卷可以给虚假的结果。< / p > < p >几个厂商设计方法可以弥补这一点。例如,张,太阳(2009;< a href = " http://www.cgg.com/technicalDocuments/cggv_0000005143.pdf " > < em >第一次打破< / em >, 26卷< / >)描述CGG的方法之一。张等人所写的最近(2013;< a href = " http://www.cgg.com/technicalDocuments/cggv_0000014832.pdf " > < / >)渴望伦敦如何这个过程的演变。 Cogan et al (2011; SEG Annual Meeting) have written about Schlumberger's normalization algorithms, which aim to achieve the same goal.

Those papers also contain nice explanations of why RTM is not ordinarily amplitude friendly.

My advice is to talk at length to your vendor about the processing applied, and the attention paid to phase and amplitude. Ask lots of questions. Most processors (generalizing horribly) are either over-enthusiatic about treatments, especially new and/or proprietary ones, or ignorant of your needs as an interpreter–analyst. So if you're actually in the middle of processing now, test everything, ideally against geological data (like a synthetic).

Lots of processing steps can hurt amplitudes, and inversion can work in surprisingly poor data... so assume nothing, and never give up!
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