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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.

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.

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 have brought to the understanding of the geology.

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.

The May edition of Oilfield Technology is freely and widely distributed at the EAGE conference. CGG paid to appear on the cover and also got to contribute an article on a topic of our choice. This was designed to reflect our current advertising and marketing messaging. The main topic is recent advances in subsalt technology. We made reference to BroadSeis, StagSeis, RTM, FWI, dip-constrained channel tomography, Brazil/GoM data library and geohazards.

There are a number of geophysical challenges when attempting to image the sub-surface in the Central North Sea. These consist of shallow anomalies, heavy multiple contamination and sharp velocity contrasts. With a combination of broadband data and CGG’s latest processing and imaging techniques, these challenges become significantly reduced.

The main area of hydrocarbon exploration in the Northern North Sea has been within pre- and syn-rift Jurassic sandstones. This is with the exception of chalk reservoirs in the Ekofisk field and Palaeogene sand reservoirs of the Frigg field. Now, with ignited interest in the Horda Platform, and particularly after the discovery of the Grosbeak and Skarfjell oilfields, attention has been directed towards the hydrocarbon potential within post-rift Cretaceous sands. The prospectivity of the Cretaceous sands was demonstrated more than three decades ago with the Agat discoveries.

We present the results from flying the FALCON-2 system over the R.J. Smith AGG test range at Kauring, West Australia.

An overview of the general oil exploration landscape in Norway with a description of the Horda survey, concentrating on the acquisition, but including references to the complete integrated geoscience package that will eventually be delivered