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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
SERCEL INC	17200 PARK ROW HOUSTON TX 77084

International Classification(s)

• G01V:GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING ....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Berraki, Madjid	La Garde, FR	3	11
# of filed Patents : 3 Total Citations : 11
Gros, Michel Marc Maurice	La Roquebrussanne, FR	1	9
# of filed Patents : 1 Total Citations : 9
Lansley, Roy Malcolm	Bellville, US	6	45
# of filed Patents : 6 Total Citations : 45

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Patent Citation Ranking

• 9 Citation Count
• G01V Class

• 1.27 % this patent is cited more than
• 14 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent Application No: 2011/0299,360

SEISMIC ARRAY WITH SPACED SOURCES HAVING VARIABLE PRESSURE

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Abstract

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An over/under seismic source system includes a first umbilical to a first gun array at a first depth and a second umbilical at a different air pressure to a second gun array at a second, lower depth. The air pressure to the second, lower gun array is tuned so that the periods of the gun bubbles from the higher and lower gun arrays match in order to improve wavefield separation in subsequent data processing.

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