Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Kurang Mehta"'
Autor:
Denis Kiyashchenko, Jorge Lopez, Kurang Mehta, Patsy Jorgensen, Javier Ferrandis, Michael Costello
Publikováno v:
The Leading Edge. 29:712-723
The virtual source method is a useful tool for redatuming a seismic survey below complicated overburden by creating virtual sources at downhole receiver locations, hence generating data independent of the overburden and the time-lapse changes therein
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51c1a379e1d7c8c4b6ae4917f39eb5a6
https://doi.org/10.1190/1.3447785
https://doi.org/10.1190/1.3447785
Publikováno v:
GEOPHYSICS. 73:S73-S80
Time-lapse monitoring is a powerful tool for tracking subsurface changes resulting from fluid migration. Conventional time-lapse monitoring can be done by observing differences between two seismic surveys over the surveillance period. Along with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99c5a3b7340b07ec384f19ed41130f25
https://doi.org/10.1190/1.2894468
https://doi.org/10.1190/1.2894468
Publikováno v:
The Leading Edge. 27:620-629
Using model and field data, this article reviews the virtual-source method and its acquisition geometry requirements. Before we go into the details of the acquisition geometry requirements, let us briefly review the basic concept and the advantages o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac327cab18281600828fc6fb23f56e6e
https://doi.org/10.1190/1.2919580
https://doi.org/10.1190/1.2919580
Publikováno v:
Bulletin of the Seismological Society of America. 97:1396-1403
Receiver function is defined as the spectral ratio of the radial component and the vertical component of the ground motion. It is used to characterize converted waves. We extend the use of the receiver function to downhole data using waves recorded i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::020a6a6b72de7bab1c3e391f04e31e76
https://doi.org/10.1785/0120060256
https://doi.org/10.1785/0120060256
Autor:
I. Sinha Herhold, Patsy Jorgensen, Jorge Lopez, Andrey Bakulin, Javier Ferrandis, Albena Mateeva, Kurang Mehta
Publikováno v:
The Leading Edge. 26:732-740
The virtual source method is a breakthrough that allows us to image and monitor the subsurface in cases where surface seismic or VSP fail to deliver. In settings where the overburden is complex or changing, traditional time-lapse signals are weak or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5406d235a402781b6a4869981fdc9304
https://doi.org/10.1190/1.2748490
https://doi.org/10.1190/1.2748490
Publikováno v:
Geophysical Journal International. 169:271-280
SUMMARY Near-surface properties play an important role in advancing earthquake hazard assessment. Other areas where near-surface properties are crucial include civil engineering and detection and delineation of potable groundwater. From an exploratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f437e41a631f1deba7f1aee9dd7079b
https://doi.org/10.1111/j.1365-246x.2006.03303.x
https://doi.org/10.1111/j.1365-246x.2006.03303.x
Autor:
Roel Snieder, Kurang Mehta
Publikováno v:
American Journal of Physics. 74:224-231
In time reversed imaging a pulse is propagated through a medium, the signal is recorded, and then the time reversed signal is back-propagated through the same medium to refocus the energy at the original location of the source. The refocusing is inde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21c9fca568ab7059b253b803ac8d16c9
https://doi.org/10.1119/1.2166365
https://doi.org/10.1119/1.2166365
Publikováno v:
Natural Product Letters. 16:329-334
The effect of photo-stabilization of Azadirachtin-A (Aza-A) was examined when exposed to sunlight and ultraviolet light in the presence of four structurally different ultraviolet stabilizers namely 4-aminobenzoic acid, 2,4-dihydroxybenzophenone, 4,4'
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2f1ddfa54787d4453ec939364c5d3e1
https://doi.org/10.1080/10575630290031981
https://doi.org/10.1080/10575630290031981
Publikováno v:
Journal of Liquid Chromatography & Related Technologies. 23:2225-2235
An improved reverse phase high performance liquid chromatography (HPLC) procedure has been described to estimate azadirachtin-A content in crude methanolic extracts of neem seed kernels using valley-to-valley integration techniques. The present paper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::901ab36838c9be1ea0082976eedc64c6
https://doi.org/10.1081/jlc-100100484
https://doi.org/10.1081/jlc-100100484
Publikováno v:
SEG Technical Program Expanded Abstracts 2012.
Summary At an EOR field in South Oman an extensive synthetic modeling study was done in order understand steam flow behaviour within the reservoir. To understand the permeability distribution within the steam flooded zone, a simulated “Close-the-Lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::529287160247eeee490ec59a409799a0
https://doi.org/10.1190/segam2012-0804.1
https://doi.org/10.1190/segam2012-0804.1