FreeCable, a Kietta Technology - News & Events

SEG International Exposition and 88th Annual Meeting - Anaheim, California, 14-19 October 2018

Kietta will be present at the SEG18! On 16 October, Luc Haumonté C.T.O. and Eric Bathelier will give a talk. Looking forward to meeting you at the show! start time: 8:30AM - location: 205A « Qualitative comparison between midwater stationary cable and seabed acquisitions based on a 2D elastic modeling in irregular seabed conditions Learn more » Luc haumonté - C.T.O. KIETTA start time: 10:10AM - location: 210A « The midwater stationary cable (FreeCable), a totally flexible acquisition technology to tackle the subsurface imaging and reservoir characterization challenges Learn more» Eric Bathellier, KIETTA

EAGE/SEG Workshop on Marine Multi-component Seismic

August 29 2018 In marine acquisition multi-component seismic (MCS) usually refers to ocean bottom technologies that integrate hydrophones and 3C geophones, and the associated discussions topics often concern P-to-S converted waves. Conversely, the Midwater Stationary Cable is an innovative technology equipped with 4C sensors placed in the water column. It is coupled to the water which is an acoustic medium propagating only P-waves. The antagonism between these two technologies frequently raises some questions: what are the MSC geophones used for? The paper explains the benefits of exploiting geophone measurements in the MSC framework. More information on www.eage.org

EAGE Marine Acquisition Workshop

August 23 2018 Kietta recently introduced a new marine seismic acquisition method named midwater stationary cable (MSC). This technique uses autonomous surface vessels to control independent seismic four-component cables. It is demonstrated in this presentation that the high number of degrees of freedom enables to record full-azimuth, full-offset, fullband and high fold data which will in turn deliver a better structural imaging and reservoir characterization. As an application example, the salt/subsalt imaging challenge was selected for which the different geophysical issues i.e. azimuthal distribution, offset range, frequency content, signal penetration and fold are addressed. More information on www.eage.org

Geophysical Society of Houston - 7 novembre 2017 Lionel Lhommet - Kietta S.A.S. Traditional marine seismic acquisition methods (streamer, OBC) have reached some inherent limitations that are difficult to overcome. Some new methods such as nodes have been recently introduced but lead to a significant cost increase in opex due to their low productivity. The new patented method presented here combines the advantages of all techniques to offer excellent quality data in a very efficient manner. The presentation describes the method’s background, its positioning compared to competing techniques, and presents the key advantages of this new concept.

Cutting-edge marine seismic technologies — some novel approaches to acquiring 3D seismic data in a complex marine environment

First Break - Nov 2017 - Special Topics Azizur Rahman Khan, Turki M. Al-Ghamdi and Fuad A. Al-Somali The use of streamer or Ocean Bottom Cable (OBC) techniques for a seismic survey in a complex marine environment present major operational challenges owing to islands, large variations in water depth within a few kilometres from the shore and a complex sea floor because of canyons, pinnacles, steep reef flanks, rugose sea floor, and corals. Salt-dominated provinces, too, present a complicated geological setting — deep targets below salt layers of variable thickness, salt mounds, massive halite and anhydrite layers in the overburden, a highly rotated post-salt section, steep geological dips at the target level, and a complex fault system. Complexity of the survey area requires novel approaches and customized seismic data acquisition technologies for a cost-effective imaging solution. We present four innovative marine seismic technologies, tested to assess their efficacy in acquiring long offset wide azimuth data, in a logistically complex marine environment.

The Midwater Stationary Cable (FreeCable) to solve today’s offshore seismic acquisition paradox

FIRST BREAK - Vol 35, No 11 - November 2017 Luc Haumonté The world economy is demanding an increasing volume of oil and according to oil market specialists this trend is not expected to decrease in the next decades. The easy oil is gone and oil companies currently seek either increasing the existing production, which will last for some limited period of time, or continuing exploration for new discoveries. The fact that the easy oil has already been found practically means that the new exploration challenge is to look for complex reservoirs such as deep target, complicated geological environments, subsalt imaging, or hardly accessible sites. Generally speaking, solving this problem requires a high-end seismic acquisition technique able to provide full offset full azimuth coverage, broadband data and deep penetration. Indeed, zero offset traces are needed to build a reliable structural model and estimate velocity for deep imaging. Long offsets are required to illuminate salt body flanks and subsalt reservoirs. The low frequency content is necessary to image layer boundaries and obtain good penetration. The high frequency content is used for obtaining interface details and resolving thinner beds. Deep penetration is also obtained through low measurement noise and high fold leading to a great post-stack signal-to-noise ratio. Finally, full azimuth and full offset maximizes the target reservoir illumination and minimized the probability of shadow areas. Such a qualitative acquisition method is generally perceived to be very expensive. On the other hand, the economic downturn in the oil and gas industry and especially in the exploration market puts high pressure on expenditures and places traditional acquisition technologies in difficulty. Lots of seismic vessels are placed in cold stack and the ocean bottom cable time seems to be over. To solve this paradox the seismic industry is looking for new solutions providing better, cheaper, and faster acquisitions. Nodes are gaining momentum but do not completely respond to the three criteria. Robotic projects tend to flourish, but most of them are not yet industrial. In this article a field proven unmanned solution able to address the new industry challenges is presented. The patented technology developed by Kietta consists of controlling unmanned midwater stationary cables (MSCs).

This paper was presented at the 2016 EAGE/SPE Sub-Salt Imaging Workshop. It describes the FreeCable system and how it delivers value to improve sub-salt imaging.

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SEG International Exposition and 88th Annual Meeting - Anaheim, California, 14-19 October 2018

EAGE/SEG Workshop on Marine Multi-component Seismic

EAGE Marine Acquisition Workshop

GSH talk 2017

Cutting-edge marine seismic technologies — some novel approaches to acquiring 3D seismic data in a complex marine environment

The Midwater Stationary Cable (FreeCable) to solve today’s offshore seismic acquisition paradox

Subsalt exploration

News & events

events

SEG International Exposition and 88th Annual Meeting - Anaheim, California, 14-19 October 2018

publications

EAGE/SEG Workshop on Marine Multi-component Seismic

EAGE Marine Acquisition Workshop

GSH talk 2017

Cutting-edge marine seismic technologies — some novel approaches to acquiring 3D seismic data in a complex marine environment

The Midwater Stationary Cable (FreeCable) to solve today’s offshore seismic acquisition paradox

Subsalt exploration

HQ / EUROPE