Нетрадиционные источники УВ: генезис, закономерности, методы прогноза, поисков и освоения > Нефтегазоносность кристаллического фундамента
Фундаментная нефть: от мифов к реальности
Шевченко Николай Борисович:
Вот ещё парочка по северному борту ДДв.
:)
Карпов Валерий Александрович:
Николай Борисович!
Пока. все то, что я просмотрел, показывает теснейшую ассоциацию пород фундамента с породами (часто продуктивными) осадочных образований. Есть ли еще на эту тему?
Шевченко Николай Борисович:
--- Цитата: Карпов Валерий Александрович от Сентября 10, 2013, 04:05:58 pm ---Николай Борисович!
Пока. все то, что я просмотрел, показывает теснейшую ассоциацию пород фундамента с породами (часто продуктивными) осадочных образований. Есть ли еще на эту тему?
--- Конец цитаты ---
Валерий Александрович, и что эта "теснейшая ассоциация" дает поисковикам?
8)
Шевченко Николай Борисович:
http://www.ogj.com/articles/print/volume-105/issue-35/exploration-development/northeast-kansas-well-tests-oil-gas-possibilities-in-precambrian-rocks.html
Northeast Kansas well tests oil, gas possibilities in Precambrian rocks
09/17/2007
"Several thousand wells in Kansas have been drilled into the Precambrian basement, which usually signals the depth limit of drilling for oil and gas prospecting.
Most of these wells have penetrated only a few feet or tens of feet and a few cut several hundred feet of basement; 17 are known to have penetrated more than 1,000 ft into the basement, so the information on the Precambrian is surficial with exception of these wells and magnetic, gravity, and seismic data.
The COCORP seismic line and the earthquake monitoring system have added considerable data on the basement. The well data are sparse in the deeper parts of the basins and denser on the Nemaha anticline, Central Kansas uplift, and Cambridge arch. Oil produced from Precambrian rocks on the Central Kansas uplift is from granite wash, a porous weathered residuum, or fractures.
In late 2005 in far northeastern Kansas in the Forest City basin, W.T.W. Operating LLC drilled the No. 1 Wilson well to a total depth of 5,772 ft, 1,826 ft into the Precambrian basement on a venture testing the possibility of oil and gas in these crystalline rocks. Elevation of the well is 1,000 ft, and a bottomhole temperature of 135° F. was measured at TD..."
Шевченко Николай Борисович:
Oil occurrences in crystalline basement rocks, southern Norway – comparison with deeply weathered basement rocks in southern Sweden
LINNÉA GUNTERBERG
Gunterberg, L., 2013: Oil occurrences in crystalline basement rocks, southern Norway
– comparison with deeply weathered basement rocks in southern Sweden.
Dissertations in Geology at Lund University, No. 344, 14 pp. 15 hp (15 ECTS credits).
Keywords:
Petroleum, crystalline basement, deep weathering, saprolite Supervisor:
Mikael Calner
External supervisor:
Mats Andersson
Linnéa Gunterberg, Department of Geology, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden.
E-mail: linnea_gunterberg@hotmail.com
Abstract : Rising oil prices and an increasing global use of fossil fuels make the survey of alternative petroleum reservoirs of great importance. Instead of drilling in regular sedimentary successions, the possibility of investigat-ing reservoirs in crystalline basement is in many places of economic interest. Reservoirs in crystalline basement rock are producing oil in several countries e.g. Vietnam and Yemen, and oil exploration including drillings are made continuously to look for reservoirs in basement rocks in other places. The Norwegian company Lundin Nor-
way AS has found traces of petroleum in weathered granites in drill cores from the Utsira High, southwestern Nor-way. Drilling and survey offshore can be expensive and difficult while analog research onshore could result in sig-nificant information and increased knowledge. Bømlo basement is related in age and petrology with the basement of Utsira High. This makes the, easy accessed, onshore island to a high quality survey area. The weathered material
with petroleum occurrences from Utsira High makes Ivön, southeastern Sweden, a key locality since the latter area yields several good exposures where the relationships between deep weathered basement and unweathered base- ment can be studied. This thesis details the development of petroleum occurrences in crystalline baseme.
::)
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