Explorer Geophysical Corner

Relying solely on sonic logs to convert surface seismic travel time to depth may lead to errors in interval velocity. Limited check shot data helps reduce these errors.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

E&P players are always asking for more and better data at increasingly lower cost. Data acquirers are always looking for means to ensure that data is provided in an acceptable revenue stream. It is 'presently the lifeblood of the geophysical industry'.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Compared to what? Improved business conditions are projected for 2000; however, 1999 was so darn bad ... well, see what you think.

American Association of Petroleum Geologists (AAPG)
Explorer Article

A dream fulfilled ... Exploring for Oil and Gas Traps is the final volume of the AAPG Treatise of Petroleum Geology series. A project that started in 1985 comes to completion with this book.

American Association of Petroleum Geologists (AAPG)
Explorer Article

After years of 'wheeling and dealing' international oil companies are finally beginning to sink exploratory wells in the Caspian Sea. Could the 'exploratory well of 1999' meet that prediction? The next two years should prove it.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

Geophysicists interpret surface seismic reflection data presented in time. Geologists construct models, drill wells and acquire well logs in depth. The two types of data (time and depth) are linked in a velocity model of the subsurface. Vertical seismic profile (VSP) data acquisition and interpretation is reviewed.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Excitement grows as international companies jockey for position in the world's hottest play -- West Africa's deep water field.

American Association of Petroleum Geologists (AAPG)
Explorer Article

AAPG awards are presented to individuals recognizing their service to the profession, the science, the Association and the public. Heading the list is Gerald M. Friedman who has been named to receive the Sidney Powers Memorial Award, AAPG's highest honor.

American Association of Petroleum Geologists (AAPG)
Explorer Article

How much effort is going toward improving recover from already producting fields? A survey taken of nearly 300 AAPG members in five U.S. cities by the AAPG Reservoir Development Committee may surprise readers with their answers.

American Association of Petroleum Geologists (AAPG)
Explorer Article

AAPG's international meeting and exhibition in Birmingham, England turned out to be a time of optimism and anticipation for the next century. Held in September, it attracted more people than expected.

American Association of Petroleum Geologists (AAPG)
DL Abstract

Around 170 million years ago, the Gulf of Mexico basin flooded catastrophically, and the pre-existing landscape, which had been a very rugged, arid, semi-desert world, was drowned beneath an inland sea of salt water. The drowned landscape was then buried under kilometers of salt, perfectly preserving the older topography. Now, with high-quality 3D seismic data, the salt appears as a transparent layer, and the details of the drowned world can be seen in exquisite detail, providing a unique snapshot of the world on the eve of the flooding event. We can map out hills and valleys, and a system of river gullies and a large, meandering river system. These rivers in turn fed into a deep central lake, whose surface was about 750m below global sea level. This new knowledge also reveals how the Louann Salt was deposited. In contrast to published models, the salt was deposited in a deep water, hypersaline sea. We can estimate the rate of deposition, and it was very fast; we believe that the entire thickness of several kilometers of salt was laid down in a few tens of thousands of years, making it possibly the fastest sustained deposition seen so far in the geological record.

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Request a visit from Frank Peel!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Three-dimensional (3D) seismic-reflection surveys provide one of the most important data types for understanding subsurface depositional systems. Quantitative analysis is commonly restricted to geophysical interpretation of elastic properties of rocks in the subsurface. Wide availability of 3D seismic-reflection data and integration provide opportunities for quantitative analysis of subsurface stratigraphic sequences. Here, we integrate traditional seismic-stratigraphic interpretation with quantitative geomorphologic analysis and numerical modeling to explore new insights into submarine-channel evolution.

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Request a visit from Jacob Covault!

American Association of Petroleum Geologists (AAPG)
VG Abstract

In comparison with the known boundary conditions that promote salt deformation and flow in sedimentary basins, the processes involved with the mobilization of clay-rich detrital sediments are far less well established. This talk will use seismic examples in different tectonic settings to document the variety of shale geometries that can be formed under brittle and ductile deformations.

Request a visit from Juan I. Soto!

American Association of Petroleum Geologists (AAPG)

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