Login| Library| Events|Contact| Home
Home > Media & Events > Industry Articles

Industry Articles

The SeisAble Benefits of CGG technologies and services are regularly featured in the industry press. Find out more by consulting our e-library of published industry articles. Narrow your search by entering at least one search criterion:

Category Where Published: When Published:
Keyword(s): Author(s):

Results: 153

New technology breathes new life into mature basins - a case study over the Utsira HighNew technology breathes new life into mature basins - a case study over the Utsira High
World Oil, April, 2015
Vetle Vinje | Andrew Wright | Jo Firth
Summary
We present a case study over the South Utsira High. This survey was the first commercial BroadSource with BroadSeis 3D survey, and was acquired over the Johan Sverdrup field. A small pilot survey was initially acquired over the Avaldsnes discovery and later extended to 2700km2. We discuss the acquisition and processing and the benefits that full bandwidth data has brought to the understanding of the geology.
An integrated approach to unconventional resource play reservoir characterization, Thistleton-1 case study, NW EnglandAn integrated approach to unconventional resource play reservoir characterization, Thistleton-1 case study, NW England
First Break, February, 2015
Scott Brindle | David O'connor | Richard Windmill | Peter Wellsbury | Guy Oliver | Graham Spence | Chi Vinh Ly
Summary
In this paper, we present a UK case study and draw on lessons learnt from the American market by using mineralogical and textural data obtained by AM and measured TOC to constrain and improve the accuracy of petrophysical modelling. We characterize a UK unconventional reservoir using integrated AM, TOC and petrophysics to define and quantify favourable and unfavourable zones for further development/production and outline the potential benefits and applications of the workflow.
High-fidelity Adaptive Curvelet Domain Primary-Multiple SeparationHigh-fidelity Adaptive Curvelet Domain Primary-Multiple Separation
First Break, January, 2015
Xiang Wu | Barry Hung
Summary
In this paper, we propose an adaptive implementation scheme for first separating multiples from primary events by a given multiple model in seismic data and subsequently removing the multiples from noisy seismic data using the curvelet transform. Due to the sparseness of seismic data in the curvelet domain, the optimization problem is formularized by incorporating L1- and L2-norms, based on the framework of Bayesian Probability Maximization. Moreover, to meet the challenges faced by various types of data complications, we further develop a method termed frequency-regularized adaptive curvelet domain separation for enhancing the effectiveness of primary-multiple separation by performing frequency dependent optimization in response to the presence of noise and the inaccuracy of multiple models.
Broadband Data Starts to Unlock the Secrets to Finding Hydrocarbons in the Banda ArcBroadband Data Starts to Unlock the Secrets to Finding Hydrocarbons in the Banda Arc
Oilfield Technology, January, 2015
Peter Baillie
Summary
The Banda Arc is of great interest to petroleum explorers because of abundant onshore and offshore oil and gas seeps and similarities with geologically contiguous Mesozoic and Cenozoic successions in Australia where numerous petroleum systems exist and have been exploited (the Mesozoic basins are collectively termed the “North West Shelf”). Exploration of the offshore Banda Arc has previously been limited because of water depths, remoteness and seismic imaging problems associated with a zone of deformation occurring between the fore-deeps and the Banda Sea. In cooperation with the Indonesian Directorate General of Oil and Gas (Migas) and the Timor Leste National Petroleum Authority (ANP), CGG has acquired four phases of multi-client seismic data around the Banda Arc; collectively, these surveys are known as the BandaSeis Project. The data has been acquired with CGG BroadSeis broadband technologies and processed in depth: the regional Phase III data is currently being processed and will not be discussed in this article.
Complex structural imaging of transition zones in Bohai Bay, China, by OBC technologyComplex structural imaging of transition zones in Bohai Bay, China, by OBC technology
Leading Edge, November, 2014
Xiao-Gui Miao | Wei Yan | Yong Xia Liu | Kunlun Yang
Summary
We have demonstrated the advantage of OBC data acquisition using SeaRay and advanced imaging technologies through the Bohai case study. Compared with a conventional raybased Kirchhoff migration technique, HFCBM provides superior structural imaging for the area with complex geology and steep faults and improves the signal-to-noise ratio in the data effectively. Combined with PZ summation, shallow-water demultiple, and TTI model building, this workflow provides a promising solution for resolving imaging issues in the complex fault system and in the middle to deep low-S/N zone in the Bohai area.
Benefits of integrated approaches for solving imaging challenges presented by complex geology: latest developments in marine wide- and full-azimuth surveysBenefits of integrated approaches for solving imaging challenges presented by complex geology: latest developments in marine wide- and full-azimuth surveys
First Break, November, 2014
Conrad Judd | Risto Siliqi | Fabrice Mandroux | Jo Firth | Chu-Ong Ting
Summary
To improve the image of complex geology demands an acquisition design that respects the anticipated imaging challenges. Broadband recording and increased spatial sampling can improve the resolution of sedimentary layers and can lead to improved facies discrimination and high-resolution tomography. Low-frequency strength and ultra-long offsets can contribute to subsalt penetration and provide better definition of overburden velocities as a result of FWI. High signal-to-noise ratio, particularly at low frequencies, provided by quiet solid streamers, stabilizes inversions for reservoir characterization purposes. Increased azimuth content brings better illumination as well as facilitating improved multiple attenuation, and also leads to better constraints on anisotropy.
The search for oil in the South-Eastern Barents SeaThe search for oil in the South-Eastern Barents Sea
Geo Expro, October, 2014
Sylvia Beate Hammersvik | Gustav Aagenes Ersdal
Summary
In 2013 CGG acquired a large 3D seismic survey, FIN13, west of the former disputed area, covering the northern part of the Finnmark Platform and the western extension of the Tiddlybank Basin. The new 3D survey was acquired with CGG?s proprietary BroadSeis technology to produce broader bandwidths and deliver sharper wavelets without sidelobes. These provide more detailed imaging, allowing better identification of prospects and leads.
CGG Horda survey heralds new strategyCGG Horda survey heralds new strategy
Seismic Profile, October, 2014
Idar Horstad | Erling Frantzen | Jo Firth
Summary
CGG had not acquired a lot of new data in Norway over recent years, but in 2013 the company made a step-change in its activity in this prolific region and launched a plan to grow quickly and become the market leader. The combination of BroadSeis? and BroadSource? broadband technology with local geological knowledge lies at the core of CGG?s revised strategy in the region. New surveys have been acquired on the Halten Terrace, in the Barents Sea and Denmark. The real breakthrough came with the launch of the Horda survey on the eastern rim of the northern Viking Graben commencing in 2014
12345678910...