Oilfield Review Spring 2009


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Editorial: Marine CSEM: Evolution of a Technology Download file (0.07 MB PDF)

Electromagnetic Sounding for Hydrocarbons

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Electromagnetic Sounding for Hydrocarbons

Deep-reading electromagnetic surveys examine subsurface resistivity, providing information that is complementary to seismic data. This article introduces magnetotelluric and controlled-source electromagnetic technologies. Marine examples include case studies from the Gulf of Mexico, offshore Brazil and Greenland.


Near-Surface Electromagnetic Surveying

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Near-Surface Electromagnetic Surveying

Electromagnetic surveys deliver information by probing the resistivity of the earth. One method employed in land surveys uses an inductive loop to investigate the near surface. Two case studies from the United Arab Emirates illustrate its use. One study mapped an aquifer for a water-storage project. The other identified the bottom of the low-velocity layer in an area of dunes, which helped determine how to apply static corrections for a seismic survey.


A Plan for Success in Deep Water

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A Plan for Success in Deep Water

Deepwater E&P operations present the upstream industry with unprecedented technological and economic challenges. Addressing them requires a fundamental change in the way the offshore oil and gas industry operates. The projects in these environs are best viewed as a single, integrated effort, from exploration to production and even beyond.


Evaluating Volcanic Resources

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Evaluating Volcanic Resources

Volcanic rock can contain oil and gas in commercial quantities, but evaluating these reservoirs is not straightforward. By extending techniques designed for evaluating sedimentary reservoirs, some companies find profitable opportunities in areas that others might deem unworthy of consideration. Examples from China and India demonstrate successful petrophysical evaluation of volcanic formations using neutroncapture spectroscopy, nuclear magnetic resonance, borehole resistivity images and conventional logging technology.


Contributors
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New Books and Coming in Oilfield Review
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All pages in this issue
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