Seismic Survey
Dynamic seismic solutions overcome traditional challenges
The latest seismic survey technologies are helping users to preserve the environment, improve safety and speed up modelling. Eugene McCarthy reports.
Eugene McCarthy informa que las últimas tecnologías de sondeo sísmico están ayudando a los usuarios a preservar el medio ambiente, mejorar la seguridad y apurar el modelado.
Die neuesten seismischen Aufschlusstechnologien sind umweltschonend, sicherer und ermöglichen eine schnellere Modellierung. Eugene McCarthy berichtet.
G
azprom Neft says it has become the first company in the Russian oil and gas industry to pioneer a new seismic solution that
preserves forests from cutting-over. A pilot project has just been completed
in the West Chatylkinsk license block. Te results show that 200 hectares of forest – approximately 60,000 trees – could be preserved during seismic surveying by using the new solution. At the heart of the new technology is
the RT System 2 wireless data collection system from Wireless Seismic. Being wireless means there is no need to cut over forest corridors for cable laying (Fig. 1). Te Russian company says that the
cable-free system significantly optimises the production cycle, particularly because of the ease and speed of laying sensors in difficult terrains. Another feature is the way it allows real-time monitoring of the received signal and on-site processing. Gazprom Neft says that this prevents deterioration of data quality and the need to repeat some surveys.
Gazprom Neft trialled the system in 2013 during seismic investigations performed at the Shakal block in Iraq. During these investigations, usage of wireless sensors considerably facilitated performance of seismic survey in the mountainous terrain typical for the region, making it possible to mount the equipment in hard-to-reach places. Following the results of this trial, it was decided to apply the technology in Russia. Te company trialled the technology on one of its own sites, during a period of very low temperatures typical for the region. Tis data gathered this way was found to compare very favourably with data gathered by a traditional seismic solution. “Application of this new method makes it possible to resolve some of our essential problems at this time,” noted Gazprom Neft first deputy director general Vadim Yakovlev. “First, a significant increase of the industrial safety level may be achieved since major risks of injury during seismic survey works are related with forestry cutting-over. Second, human impact on the environment may be reduced by means of applying eco-friendly technologies, and duration of works may be decreased, too. Te experiments conducted demonstrated good opportunities for further enhancement of seismic surveys efficiency at our oil and gas fields, and we will apply the obtained experience in other projects.” New from CGG is EarthModel
Builder, designed to be an affordable modelling solution that is used to improve efficiency, accuracy and flexibility for more realistic representations of the reservoir. Part of the Jason suite, EarthModel
Fig. 1. The omission of cable means there is no need to cut-over forest corridors for cable laying. Photo courtesy of Wireless Seismic
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Builder is a novel tool for asset teams and service companies to generate multiple first-pass reservoir models containing rock properties. Te company says that organisations of all sizes, from international oil and gas companies to small independents, can use the models to
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