05.07.2009
A well in which production of oil /gas has decreased and production of water has increased
To lower the drill stem, the tubing, the casing, or the sucker rods into the wellbore.
Global forum for the wind energy sector. GWEC’s mission is to ensure that wind power establishes itself as one of the world’s leading energy sources, providing substantial environmental and economic benefits
All greenhouse gases have a Global Warming Potential (GWP). This value is used to compare the abilities of different greenhouse gases to trap heat in the atmosphere. GWPs are based on the heat-absorbing ability of each gas relative to that of carbon dioxide (CO2), as well as the decay rate of each gas (the amount removed from the atmosphere over a given number of years). GWPs can also be used to define the impact greenhouse gases will have on global warming over different time periods or time horizons. These are usually 20 years, 100 years and 500 years. For most greenhouse gases, the GWP declines as the time horizon increases. This is because the greenhouse gas is gradually removed from the atmosphere through natural removal mechanisms, and its influence on the greenhouse effect declines. By assigning a GWP value it allows policy makers to compare the impacts of emissions and reductions of different gases. For instance, methane is a significant contributor to the greenhouse effect and has a GWP of 21.
Saudi Arabia is the largest oil producing country. Global oil reserves at the end of 2006 (in thousand million barrels) is as follows: Middle East (742.7), Europe and Eurasia (144.4), Africa (117.2), S. & Central America (103.5), North America (59.9), Asia Pacific (40.5)
Global demand for LNG, led by the United States, China and India, is forecast to raise from 226 bcm in 2007 to 640 bcm by 2020 and close to 790 bcm by 2030 on the back of economic growth and environmental concerns