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Unformatted text preview: yId=92&contentId=7005893 17 18 Proven Reserves, Natural Gas 2006 From the BP Statistical Review of World Energy, 2007. See Per Capita Natural Gas Consumption, 2006 From the BP Statistical Review of World Energy, 2007. See 3 19 Natural Gas Imports & Exports, 2006 20 LNG The easiest way to transport natural gas is by pipeline – but when that’s not possible, it can be sent by tanker. Natural gas is liquefied by cooling it to -259˚F (-161˚C); it condenses to form a liquid with just 1/600th its original volume. When it reaches its destination the LNG is warmed and “regassified.” Unfortunately, this takes a lot of energy – making LNG less efficient and environmentally friendly than conventionally processed natural gas. There has never been a serious LNG tanker accident; however, there have been some accidents in the processing phases. From the BP Statistical Review of World Energy, 2007. See 21 “Proven” vs. “Potential” Reserves Proven” Potential” Proven reserves can be measured with reasonable accuracy – we can be fairly confident about how much is available, and that it can be recovered economically. Potential reserves have not been discovered. So how do we know they exist? We don’t – but based on what we know about geology, technology, we can make a good guess about their existence. – Alternative fossil fuels (oil shale, tar sand, frozen methane) – Nuclear power (fission-based) Renewable (or inexhaustible) – Solar 22 Problems with Fossil Fuels – – – – Pollution Mine safety Subsidence & erosion Transportation Oil – – – – Air pollution Spills Dependence on foreign sources Transportation Natural Gas – Air pollution – Storage & safety – Transportation Source: Alternat...
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This note was uploaded on 12/16/2010 for the course GEOG 102 taught by Professor Osborn during the Fall '10 term at San Diego State.

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