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1. 发明公开

EP2534505A1 METHODS FOR SUBSURFACE PARAMETER ESTIMATION IN FULL WAVEFIELD INVERSION AND REVERSE-TIME MIGRATION 审中-公开
标题翻译：法地下参数的测量在全波场转换及逆时偏移
公开(公告)号：EP2534505A1
公开(公告)日：2012-12-19
申请号：EP11742593.4
申请日：2011-01-05
申请人： ExxonMobil Upstream Research Company
发明人： LEE, Sunwoong , KREBS, Jerome, R. , ANDERSON, John, E. , BAUMSTEIN, Anatoly , HINKLEY, David, L.
IPC分类号： G01V1/28
CPC分类号： G01V1/00 , G01V1/28 , G01V1/282 , G01V1/301 , G01V1/306 , G01V1/368 , G01V2210/51 , G01V2210/614 , G01V2210/622 , G01V2210/663 , G01V2210/675 , G01V2210/679
摘要： Method for converting seismic data to obtain a subsurface model of, for example, bulk modulus or density. The gradient of an objective function is computed (103) using the seismic data (101) and a background subsurface medium model (102). The source and receiver illuminations are computed in the background model (104). The seismic resolution volume is computed using the velocities of the background model (105). The gradient is converted into the difference subsurface model parameters (106) using the source and receiver illumination, seismic resolution volume, and the background subsurface model. These same factors may be used to compensate seismic data migrated by reverse time migration, which can then be related to a subsurface bulk modulus model. For iterative inversion, the difference subsurface model parameters (106) are used as preconditioned gradients (107).

2. 发明授权

EP2067112B1 ITERATIVE INVERSION OF DATA FROM SIMULTANEOUS GEOPHYSICAL SOURCES 失效转让
标题翻译：同步地球物理资料的迭代反演
公开(公告)号：EP2067112B1
公开(公告)日：2017-10-18
申请号：EP07838026.8
申请日：2007-09-11
申请人： ExxonMobil Upstream Research Company
发明人： KREBS, Jerome, R. , ANDERSON, John, E. , NEELAMANI, Ramesh , JING, Charlie , HINKLEY, David , DICKENS, Thomas, A. , KROHN, Christine, E. , TRAYNIN, Peter
IPC分类号： G01V1/28 , G06F17/50
CPC分类号： G06F17/5009 , G01V1/28 , G01V2210/67

3. 发明授权

EP2553601B1 FULL WAVEFIELD INVERSION USING TIME VARYING FILTERS 有权
公开(公告)号：EP2553601B1
公开(公告)日：2019-05-01
申请号：EP11763192.9
申请日：2011-02-21
申请人： ExxonMobil Upstream Research Company
发明人： KREBS, Jerome, R. , ANDERSON, John, E.
IPC分类号： G01V1/28

4. 发明公开

EP3256886A1 EFFICIENT AND STABLE ABSORBING BOUNDARY CONDITION IN FINITE-DIFFERENCE CALCULATIONS 审中-公开
标题翻译：有限差分计算中高效稳定的吸收边界条件
公开(公告)号：EP3256886A1
公开(公告)日：2017-12-20
申请号：EP15820951.0
申请日：2015-12-15
申请人： ExxonMobil Upstream Research Company
发明人： BRYTIK, Valeriy , SHAW, Jason , JING, Charlie , ZHAO, Hong , ANDERSON, John, E.
IPC分类号： G01V99/00
摘要： Method for generating an effective, efficient, and stable absorbing boundary condition in finite-difference calculations, such as model-simulation of predicted seismic data. The top surface and optionally the bottom surface of the computational domain or grid are treated with one or more layers of PML (51), preferably 1D PML, assuming an orthorhombic medium in the PML implementation (52). The side surfaces are handled with one or more ABC layers (53). Further advantages may be realized by tapering earth model symmetry axis on the top and bottom of the model toward the vertical (54). The invention provides a beneficial compromise between reducing artifacts in the image or physical property model and computational efficiency and stability.

5. 发明公开

EP2572292A1 METHOD AND SYSTEM FOR CHECKPOINTING DURING SIMULATIONS 审中-公开
标题翻译： CHECKPOINTING工艺和系统在使用过程中模拟
公开(公告)号：EP2572292A1
公开(公告)日：2013-03-27
申请号：EP11783895.3
申请日：2011-03-14
申请人： Exxonmobil Upstream Research Company
发明人： TAN, Lijian , ANDERSON, John, E.
IPC分类号： G06F15/173
CPC分类号： G01V1/28 , G01V1/005 , G01V1/282 , G01V1/301 , G01V2210/675 , G01V2210/679
摘要： Method and system for more efficient checkpointing strategy in cross correlating (316) a forward (328) and backward (308) propagated wave such as in migrating (326) or inverting seismic data. The checkpointing strategy includes storing in memory forward simulation data at a checkpointed time step, wherein the stored data are sufficient to do a cross correlation at that time step but not to restart the forward simulation. At other checkpoints, a greater amount of data sufficient to restart the simulation may be stored in memory (314). Methods are disclosed for finding an optimal combination, i.e. one that minimizes computation time (1132), of the two types of checkpoints for a given amount of computer memory (1004), and for locating a checkpoint at an optimal time step (306, 1214, 1310). The optimal checkpointing strategy (1002) also may optimize (1408) on use of fast (1402) vs. slow (1404) storage.

6. 发明公开

EP2553601A1 FULL WAVEFIELD INVERSION USING TIME VARYING FILTERS 审中-公开
标题翻译：到时间变化滤波器全波场反演
公开(公告)号：EP2553601A1
公开(公告)日：2013-02-06
申请号：EP11763192.9
申请日：2011-02-21
申请人： Exxonmobil Upstream Research Company
发明人： KREBS, Jerome, R. , ANDERSON, John, E.
IPC分类号： G06F17/10
CPC分类号： G01V1/282
摘要： An improved method for reducing the accuracy requirements on the starting model when performing multi-scale inversion of seismic data (65) by local objective function optimization (64). The different scales of inversion are brought about by incorporating a low-pass filter into the objective function (61), and then decreasing the amount of high- frequency data that is filtered out from one scale to the next. Moreover, the filter is designed to be time varying, wherein the filter's low-pass cutoff frequency decreases with increasing traveltime of the seismic data being filtered (62). The filter may be designed using Pratt' s criterion for eliminating local minima, and performing averages (or other statistical measure) of the period and the traveltime error only with respect to source and receiver location but not traveltime (63).

7. 发明授权

EP3256886B1 EFFICIENT AND STABLE ABSORBING BOUNDARY CONDITION IN FINITE-DIFFERENCE CALCULATIONS 有权
公开(公告)号：EP3256886B1
公开(公告)日：2020-01-29
申请号：EP15820951.0
申请日：2015-12-15
申请人： ExxonMobil Upstream Research Company
发明人： BRYTIK, Valeriy , SHAW, Jason , JING, Charlie , ZHAO, Hong , ANDERSON, John, E.
IPC分类号： G01V1/28 , G06F17/10 , G01V99/00

8. 发明公开

EP2067112A1 ITERATIVE INVERSION OF DATA FROM SIMULTANEOUS GEOPHYSICAL SOURCES 失效转让
标题翻译： ITERATIVE UMKEHRUNG VON DATEN AUS同时代地球物理学家QUELLEN
公开(公告)号：EP2067112A1
公开(公告)日：2009-06-10
申请号：EP07838026.8
申请日：2007-09-11
申请人： ExxonMobil Upstream Research Company
发明人： KREBS, Jerome, R. , ANDERSON, John, E. , NEELAMANI, Ramesh , JING, Charlie , HINKLEY, David , DICKENS, Thomas, A. , KROHN, Christine, E. , TRAYNIN, Peter
IPC分类号： G06F19/00
CPC分类号： G06F17/5009 , G01V1/28 , G01V2210/67
摘要： Method for reducing the time needed to perform geophysical inversion by using simultaneous encoded sources in the simulation steps of the inversion process. The geophysical survey data are prepared by encoding (3) a group of source gathers (1), using for each gather a different encoding signature selected from a set (2) of non- equivalent encoding signatures. Then, the encoded gathers are summed (4) by summing all traces corresponding to the same receiver from each gather, resulting in a simultaneous encoded gather. (Alternatively, the geophysical data are acquired from simultaneously encoded sources.) The simulation steps needed for inversion are then calculated using a particular assumed velocity (or other physical property) model (5) and simultaneously activated encoded sources using the same encoding scheme used on the measured data. The result is an updated physical properties model (6) that may be further updated (7) by additional iterations.
摘要翻译：用于在反演过程的仿真步骤中通过使用同时编码的源来减少执行地球物理反演所需的时间的方法。通过对（3）一组源集合（1）进行编码来准备地球物理勘测数据，每组采集从非等效编码签名的集合（2）中选出的不同编码签名。然后，通过将来自每个聚集的相同接收者的所有跟踪相加，将编码的聚集相加（4），导致同时编码的聚集。（或者，从同时编码的源获取地球物理数据。）然后使用特定的假设速度（或其他物理属性）模型（5）计算反演所需的模拟步骤，并使用与之相同的编码方案同时激活编码的源测量数据。结果是可以通过附加迭代进一步更新（7）的更新的物理属性模型（6）。

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