Offshore Magazine

Africa Geology & Geophysics News

Seismic survey in prospect off Tunisia

MedOil and TGS-Nopec are to conduct a 600 sq km 3D seismic acquisition survey over part of the Louza permit off central Tunisia.

TGS-NOPEC plans 2D Seismic in Madagascar

TGS-NOPEC Geophysical Company ASA plans to complete a 2D seismic study of approximately 10,300 km covering the Morondava Basin and French waters of the Mozambique Channel, offshore west Madagascar.

New seismic data reveals unusual deepwater Ghana plays

Newly acquired seismic data reveal an unexpected and unusual structural history of the marginal ridge of Cote d'Ivoire and Ghana.

Deepwater drilling on the way off South Africa

South Africa's offshore has never seen deepwater exploration, but new seismic data indicates deepwater drilling might be the answer to South Africa's unquenchable thirst for oil.

African potential

Africa holds 9% of the world's known oil supply and provides 11% of the world's production, according to Stephen Hayes, president of the Corporate Council on Africa.

GEOSCIENCES

The Society of Exploration Geophysicists annual convention was well attended but less than organizers expected. This meant that the Salt Palace in Salt Lake City, Utah, buzzed with topical intensity rather than generic discussion.

Geoscience

Data - we are surrounded by it and always seem to want and need more, regardless of the project we are working on.

TGS surveys Nigeria

TGS-Nopec Geophysical announced a non-exclusive 2D seismic survey offshore Nigeria covering blocks OPL 227 and OPL 471.

Suriname opens to oil industry

Guyana Basin has all the ingredients to make it a prolific oil- and gas-producing basin, namely world-class source rock, multiple reservoir-seal pairs, and proven stratigraphic and structural traps.

Mauritania drilling campaign indicates emerging deepwater province

Woodside's Chinguetti discovery off Mauritania last year may trigger a bout of deepwater drilling off North West Africa. Representatives from the oil companies concerned (mainly Australian) outlined their view of progress to date at IBC's West & Central Africa oil and gas conference in London last fall.

Geosciences

The fossil energy we are using today is "stored heat" from ages past.

Geosciences

What has struck this geoscientist so intensely about the global climate debates and Kyoto Treaty wrangling is the lack of interest (or willful blindness) in geologic history.

REGIONAL EXPLORATION: Predicting deepwater turbidite reservoir quality and geometry

Deepwater examples off West Africa, Rockall

Senegal Basin has Paleozoic prospects similar to Sahara to the east

From Mauritania to Guinea Bissau

Senegal's large-scale compartments provide new exploration potential

DSDP core holes show interesting anomolies

New interest developing in Abidjan Margin geology

Cote d'Ivoire prospects rival others

Geosciences

Dev George Houston A slice of the generated model of a non-manifold geometry filled with tetrahedra. A curvilinear stratigraphic grid constrained by channel and simulated using a non-conditional sequential Gaussian Simul-ation. [Illustrations Courtesy Gocad] A display of wavefronts emerging from a subsurface source. A new computer-aided approach to modeling both geometry and properties or geological subjects has been developed by The Gocad Research Program at France's Nancy School of

Geosciences

Dev George Houston Dynamic Graphics' EarthVision links to Landmark Graphics OpenWorks eases importing interpreted seismic and petrophysical data to EarthVision for enhanced reservoir characterization and 3D well planning activities. The Western Monarch, one of Western Geophysical's seismic vessels being equipped with Concept Systems' integrated navigation software.

SATELLITE GRAVITY MAPPING Petroscan mapping, interpreting India's offshore geology

On Petroscan's Bouguer Gravity map of Canada's Eastern Continental Margin, areas of mass deficit representing basement depressions where sedimentary deposition may have taken place are shown in blue. This corresponds closely to the central part of the Jeanne d'Arc Basin, in which discoveries have been made. The merits of satellite gravity mapping have been recognized by India's Directorate General of Hydrocarbons (DGH), which has contracted Petroscan to map all its offshore

SEISMIC ACQUISITION From targeting submarines to acquiring accurate 3D seismic

In the rapidly occurring geophysical revolution that's transforming the petroleum exploration industry these days, numerous new techniques are being introduced that purport to lower the cost of acquisition, make it easier, faster, more accurate, or a combination of all of these. One such innovation that actually appears to achieve all these goals is the new vertical cable seismic acquisition technology developed by Paul Krail and Dwight Sukup, geophysicists at Texaco's exploration and

SEISMIC EXPLORATION Seismic surveyors tackle tough transition zones, congestion

Dev George Managing Editor International 3D Seamless Cover The rapid development of new seismic acquisition technology is not limited to the glamorous environs of deepwater prospects and trendy subsalt plays. Rather, there are equally exciting innovations occurring nearshore in shallow water and transition zones. Innovations such as ocean bottom cable, digital bay cable, digital telemetry, dual-sensor acquisition and processing, and in-field quality control.
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