by TheDude » Wed 19 Sep 2007, 18:45:05
$this->bbcode_second_pass_quote('meemoe_uk', 'O')K, who knows about this 'Dnieper-Donets Basin' Engdahl talks about as the fruit of abiotic theory? Is the oil in a place that defies conventional geological oil theory?
From
Heinberg's Energy Bulletin article on abiotic oil:$this->bbcode_second_pass_quote('', 'T')he Russians (I must remind the reader that I am actually talking about a minority even with the community of Russian geologists) claim successes in drilling in basement rock in the Dneiper-Donets Basin in the Ukraine. Professor Vladilen A. Krayushkin, Chairman of the Department of Petroleum Exploration, Institute of Geological Sciences, Ukrainian Academy of Sciences, Kiev, and leader of the exploration project, wrote:
The eleven major and one giant oil and gas fields here described have been discovered in a region which had, forty years ago, been condemned as possessing no potential for petroleum production. The exploration for these fields was conducted entirely according to the perspective of the modern Russian-Ukrainian theory of abyssal, abiotic petroleum origins. The drilling which resulted in these discoveries was extended purposely deep into the crystalline basement rock, and it is in that basement where the greatest part of the reserves exist. These reserves amount to at least 8,200 M metric tons [65 billion barrels] of recoverable oil and 100 B cubic meters of recoverable gas, and are thereby comparable to those of the North Slope of Alaska. (5)
However, independent assessments of the situation do not support these claims. First, the US Geological Survey does not agree that the Dneiper-Donets reserves are that large (it cites 2.7 billion barrels for total oil endowment). Second, the appearance of oil in basement rocks is unusual but not unheard of, and there are various ways in which oil can appear in basement rock. In the process of drilling through overlying sedimentary rock, oil can be expelled downward so that it appears to come from below. Then there are situations where igneous or metamorphic rocks have migrated upward, or sedimentary rocks have migrated downward, so that basement rock covers sedimentary rock (in some cases, the overthrust may be hundreds of square kilometers in extent). In his paper �Oil Production from Basement Reservoirs�Examples from USA and Venezuela,� Tako Koning of Texaco Angola, Inc., cites source rocks such as marine shales in nearly all instances. (6) More to the point, numerous studies cite the existence of sedimentary source rocks in the Dneiper-Donets region. (7)
Engdahl also compares the D-D basin's production to Alaska's North Slope, which apparently is a handy yardstick...
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