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The global energy sector from a subsurface perspective

Oil & Gas

Predicting Reservoir Properties

Amanda Alvarez, Pedro Alvarez and Lucy Macgregor, RSI
Reservoir lithology and fluid properties can be characterized using seismic, CSEM and rock physics. Surface measurements such as seismic and controlled source electromagnetic (CSEM) data are commonly used to estimate…

East Baghdad Super-Giant Field Under a Populated Area

Munim Al-Rawi, Ph.D., Carta Design Ltd.
The super-giant East Baghdad oil field lies in the heavily populated outskirts of Baghdad. Can it be successfully and safely exploited? Prior to 1956, the eastern part of the Baghdad…

Western Arctic Russia – The Kara Sea

Thomas Smith
In 2012, ExxonMobil and the Russian state oil company, Rosneft, signed a partnership deal that would give ExxonMobil a stake in developing Russia’s vast energy reserves in the Arctic and Black Sea. Universiteskaya-1…

An Electrical Rock Physics Framework For CSEM Interpretation

Daniel Baltar, Neville Barker (EMGS), Matthew Carr and Christopher Schmidt (QI Petrophysics)
A low-resolution rock physics framework relating CSEM-derived Rn measurements to reservoir properties can provide precise property estimates even in high-uncertainty settings. In the November 2015 issue of the AAPG Explorer,…

Teamwork at Rangely

Thomas Smith
Colorado’s Rangely oil field, with over 900 MMb of oil produced, has been viable and economic for more than seven decades thanks to an innovative and flexible approach. One of…

Paraguay Draws Industry Attention

Ken White
It is fashionable to identify deepwater regions, unconventional plays and the Arctic as the ‘hot spots’ in the current global exploration scene. In recent years, violence, tension with governments and power struggles…

Avoiding Reservoir Souring

John J. Kilbane II , Intertek
Determining the source of hydrogen sulphide on an offshore oil production platform is an important part of preventing or controlling this unwanted gas. Hydrogen sulphide (H2S) is a corrosive and…

Oil Production Surges in Texas

Thomas Smith
In spite of the recent decline in oil price, rig count, drilling permits and well completions, with an estimated 1.284 Bb of production in 2015, Texas is expected to break…

Water Matters!

Hans-Martin Schulz, Wolfgang van Berk, and Yunjiao Fu, WiPS Consulting GmbH, Germany
Water occurs virtually everywhere in oil and gas fields – yet it is often ignored. But the composition of today´s formation water is the result of multiple hydrogeochemical processes, and…

The Pain and Sorrow of Reservoir Modeling

Stephen Tyson, Ph.D.
Back in the late eighties our ambition was to put modeling capabilities on every geoscientist’s desk. Now in 2015 that aim has been achieved, but are we actually producing the…

Sarawak Discoveries Boost Malaysia

David Upton
Malaysia’s bid to turnaround the decline in its ageing petroleum reserves has exceeded expectations thanks to a series of major discoveries offshore Sarawak. Malaysia has long been a heavy hitter…