Geology, geography and global energy

Scientific and Technical Journal

Technology marine 3D seismic survey with telemetring system "ARAM ARIES II"

2013. №4, pp. 44-52

Gulenko Vladimir I.  - D.Sc. in Technical, Professor, Kuban State University, 149 Stavropolskaya st., Krasnodar, 350040, Russian Federation,, gulenko@fpm.kubsu.ru

Rudakov Aleksandr V.  - Post-graduate student, Kuban State University, 149 Stavropolskaya st., Krasnodar, 350040, Russian Federation,, gulenko@fpm.kubsu.ru

The purpose of the work is the description of a basic elements of rational technology 3D seismic survey works, created at carrying out of field researches on water area of the Pechora sea. At work the cable telemetering system gathering of the seismic information «ARAM ARIES II», bottom receiver «PZ dual sensor» GS-PV-1S, and also array of the 12 air guns «Bolt» 1900LL with total volume 24.24 l (1480 in3) was used. At working pressure of compressed air is 14 MPa the amplitude of a total signal of array makes 44.8 bar/m (peak–peak), degree of clearing of pulsations (peak / bubble) – nearby 20. The central symmetric observing system, arrangement of explosive and receiver lines – is orthogonal was used. The distance between receiver lines is made 400 m, between source lines – 300 m, thus distance between shotpoints equaled 25 m, and between receiver points – 50 m. The quantity of active channels in template made 960, thus the minimum fold made – 80. For working on researching area were used 6 vessels: a vessel-base with the central registering station of telemetering system «ARAM ARIES II», a navigator-vessel equipped with a system of acoustic positioning «Sonardyne», a source -vessel and 3 cable-vessels, and also 2 of small size motor-boats RIB FAST-1000. In work the sequence of an apportion and moving of receiver lines, acoustic positioning and shooting of a templates is in details described. Described of the technological scheme industrial seismic survey works 3D in water area of the Pechora sea, FSC "Yuzhmorgeologia" is developed by experts, has allowed to optimize quality and terms is performance of works in a field season of 2012.

Key words: sea 3D seismic survey,cable telemetering system,the central registering station,the seismic channel,air guns array,PZ dual sensor,a receiver line,a source line

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