Electricity: measuring and testing – Of geophysical surface or subsurface in situ – Using electrode arrays – circuits – structure – or supports
Reexamination Certificate
2009-07-06
2011-12-13
Aurora, Reena (Department: 2858)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
Using electrode arrays, circuits, structure, or supports
C324S357000, C324S362000
Reexamination Certificate
active
08076942
ABSTRACT:
A method for survey of hydrocarbon deposits in a researched profile of sea-bottom comprises providing a generator generating pulse electric current with a generator frequency in a towable generator line exciting electric field signals measured by sea-bottom stations synchronized with the generator, forming space-domain data arrays for the generator frequency and for higher odd harmonics frequencies nearest thereto, forming time-domain data arrays for selected offsets, inversion of the time-domain and space-domain data, and determining a bottom strata resistivity and polarization characteristics for the researched profile, based the inversion's results. The inversion preferably encompasses synchronizing and adjusting the generator line and electric field signals, dividing them into a frequency branch, including a fast Fourier transform and a robust summation producing the space-domain arrays, and a time-domain branch, including a robust summation producing the time-domain arrays. Embodiments include transient field analysis with spatial derivatives, special towing configurations, generator line types choices, etc.
REFERENCES:
patent: 2324956 (2008-05-01), None
patent: WO2007/068259 (2007-06-01), None
patent: WO2007/136276 (2007-11-01), None
Kyasper Vladimir Eduardovich
Lisitsyn Evgeny Dmitrievich
Malovichko Mikhail Sergeevich
Petrov Alexander Arkad'evich
Tulupov Andrej Vladimirovich
“Emmet” JSC
Aurora Reena
Smushkovich Aleksandr
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