公开(公告)号：US09222902B2

公开(公告)日：2015-12-29

申请号：US13346468

申请日：2012-01-09

申请人： Fred K. Gruber ,  Lalitha Venkataramanan ,  Tarek M. Habashy ,  Philip M. Singer ,  Denise E. Freed

发明人： Fred K. Gruber ,  Lalitha Venkataramanan ,  Tarek M. Habashy ,  Philip M. Singer ,  Denise E. Freed

IPC分类号： G01V1/40 ,  G01N24/08 ,  G01R33/44 ,  G01V3/18

CPC分类号： G01N24/081 ,  G01R33/448

摘要： A nuclear magnetic resonance (NMR) related distribution is estimated that is consistent with NMR measurements and uses linear functionals directly estimated from the measurement indications by integral transforms as constraints in a cost function. The cost function includes indications of the measurement data, Laplace transform elements and the constraints, and a distribution estimation is made by minimizing the cost function. The distribution estimation may be used to find parameters of the sample. Where the sample is a rock or a formation, the parameters may include parameters such as rock permeability and/or hydrocarbon viscosity, bound and free fluid volumes, among others. The parameters may be used in models, equations, or otherwise to act on the sample, such as in recovering hydrocarbons from the formation.

摘要翻译： 估计核磁共振（NMR）相关分布与NMR测量一致，并且使用通过积分变换作为成本函数中的约束从测量指示直接估计的线性函数。 成本函数包括测量数据，拉普拉斯变换元素和约束的指示，并且通过最小化成本函数来进行分布估计。 分布估计可用于查找样本的参数。 在样品是岩石或地层的情况下，参数可以包括诸如岩石渗透性和/或烃粘度，结合和游离流体体积等参数。 这些参数可以用于模型，方程式或其他方式作用于样品，例如从地层回收碳氢化合物。

公开(公告)号：US10732314B2

公开(公告)日：2020-08-04

申请号：US13333232

申请日：2011-12-21

申请人： Lalitha Venkataramanan ,  Tarek M. Habashy ,  Fred K. Gruber ,  Denise E. Freed

发明人： Lalitha Venkataramanan ,  Tarek M. Habashy ,  Fred K. Gruber ,  Denise E. Freed

IPC分类号： G01V3/175 ,  G01R33/50 ,  G01N24/08 ,  G01V1/48 ,  G01V3/14 ,  G01V3/32

摘要： Apparatus and method of characterizing a subterranean formation including observing a formation using nuclear magnetic resonance measurements, calculating an answer product by computing an integral transform on the indications in measurement-domain, and using answer products to estimate a property of the formation. Apparatus and a method for characterizing a subterranean formation including collecting NMR data of a formation, calculating an answer product comprising the data, wherein the calculating comprises a formula K ⁡ ( x ) ≡ ∫ 0 ∞ ⁢ k ⁡ ( t ) ⁢ e - t / x ⁢ dt . and estimating a property of the formation using the answer product.