Marine Seismic Sources Part VIII: Fish Hear A Great Deal
To understand how human-generated sounds affect fish it is necessary to understand how and what fish can hear, and how they respond to different types of sounds. The majority of…
Technology
Marine Seismic Sources Part VI: High Frequency Signals From Air-Guns
Only a few studies have been published which describe measurements of the air-gun signals in the kilohertz (kHz) frequency range. In this article we propose and discuss models for the…
Mining Heat
Since the time of the Romans, Cornwall, in the extreme southwest of the UK, has been known for mining minerals, especially tin. Could the future of this region be in…
Grabbing a Larger Share of the Market
It’s time consuming. It’s expensive. But when it comes to accuracy and quality, it’s surpassed by no other technology, the innovator claims. “While we initially considered shear waves to be…
Is the ‘Shale Gale’ blowing itself out?
Vast amounts of shale gas promise a new energy future for North America, perhaps even for Europe. However, recent developments indicate that whilst the gas is undoubtedly there, the transformation…
The Next Global Frontier
The Arctic is the next, and maybe the most challenging, global frontier – but how can it be effectively explored with only a two-month ice-free season? “The Arctic is surely…
Marine Seismic Sources Part V: The Hearing Of Marine Mammals
In his ocean home will beA giant in might, where might is right, And King of the boundless sea. Whale song : Anonymous Photo: George Shuklin We discuss sound…
Microseeps: The Only Real DHI?
New technology has been developed which helps de-risk hydrocarbon prospects through the identification of oil seeps too small to detect with the naked eye. Identifying large scale seeps of hydrocarbons…
Marine Seismic Sources Part III
How do you get a feeling for the difference between decibels in air and in the sea? What is the loudest bang reported? What is the loudest animal in the…
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.…
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…
Why So Much Oil in the Middle East?
In terms of oil reserves, the Middle East is second to none. This “oil miracle” of the world has been shaped by a set of favorable factors, some global and…