Marine Seismic Sources Part II
This second article on marine seismic sources summarises salient points on marine air-gun arrays and their radiation characteristics. In the first article in this series (GEO ExPro Vol. 7, No.…
Technology
Drilling Uphill
In Brunei, Shell has an ongoing programme drilling into the reservoir from below. Drilling, completing and producing an upside-down well, however, poses a number of interesting questions. The independent Sultanate…
Marine Seismic Sources Part I
This series on marine seismic sources will summarize salient points for geoscientists who need to sharpen their rusty skills in seismic source technology. It will also discuss the effect seismic…
Exploration and Beyond
Exploration and beyond is the philosophy behind WGP, a small independent geophysical company dedicated to developing solutions and services towards the next generation of energy supplies. In these days of…
Monitoring of the Ekofisk Field
Installing a Life of Field Seismic system on Ekofisk will help understand reservoir depletion and ensure future production wells are drilled where there is still oil left. ConocoPhillips, operator of…
Marine Seismic Sources Part IV
The 1956 documentary The Silent World by Jacques-Yves Cousteau wowed audiences with its vibrant depiction of aquatic life. But the Silent World is far from silent. Sound is signal or…
Depth Imaging – Seeing the Invisible
An analogy with bat technology makes it easier to understand seismic imaging of the subsurface. However, a bat’s sounds transverse a homogenous medium, while seismic waves in the earth are…
3D Contrast Property Mapping
One of the major challenges in understanding the nature of the subsurface is to accurately depict geology when data are sparse. By combining well logs and seismic data, seismic inversion…
Brazil’s Newest Independent
A new spin-off from HRT Petroleum, South America’s largest service company, HRT Oil & Gas, is staking their fortunes deep in Brazil’s Amazon Jungle. “With Brazil’s prolific offshore fields and…
Beyond Tadpoles, Beyond SCAT
Complete dip and image analysis improves structural interpretations and reduces risk. Is your seismic fair or poor? Are your structures complex? Are your reservoirs sub-thrust, sub-basalt, sub-salt, or pre-salt? Are…
Linking seismic response to geomechanics
This article discusses the linkage between 4D seismic responses and geomechanics. Exploitation of this relationship has helped reduce development costs and maximize recovery from the compacting Valhall reservoir. The 4D…
The First Oil Discoveries in the Middle East
Flashbacks on the first discoveries of oil fields in the Middle East. 1908 (May 26): Masjid Sulaiman field (Masjid Sulaiman-1 well), southwest Zagros basin, Iran (Persia) by the Concessions Syndicate…