Results 231 to 240 of about 320,709 (277)

Geothermal gradients in the conterminous United States

Journal of Geophysical Research: Solid Earth, 1988
Geothermal gradients from published temperature/depth measurements in drill holes generally deeper than 600 m are used to construct a temperature gradient map of the conterminous United States. The broadly contoured map displays 284 temperature gradients that are applicable to a depth of 2 km.
Manuel Nathenson, Marianne Guffanti
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Geothermal gradients of Alberta in Western Canada

Geothermics, 1984
Abstract 55,246 bottom hole temperature (BHT) values from petroleum exploration well logs of 28,260 wells have been used to estimate geothermal gradients in Alberta. A general decrease in geothermal gradient towards the east is apparent. High gradient areas occur in the Hinton - Edson area of west central Alberta, in the Fort McMurray area of ...
H.L. Lam, F.W. Jones
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Geothermal Gradients on Svalbard, Arctic Norway

Proceedings, 2018
The high Arctic archipelago of Svalbard, Norway, is considering to replace the currently operating coal-fuelled power plants. Besides local fossil energy sources such as coal or shale gas in combination with carbon storage and sequestration, renewable sources such as geothermal energy are being considered as alternatives.
P. Betlem, K. Midttømme, M. Jochmann, K. Senger, S. Olaussen   +4 more
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Note on the frequency distribution of geothermal gradients

Eos, Transactions American Geophysical Union, 1946
Tables of temperature gradients observed in the Earth's crust have been compiled by H. C. Spicer [see “References” at end of paper, Spicer, 1942], These data cover several pages, and it was considered convenient to summarize them for teaching purposes.This was done by obtaining the frequency of various geothermal gradients for intervals of 2°C/km for ...
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Geologic Significance of a Geothermal Gradient Curve

AAPG Bulletin, 1937
ABSTRACT The Getty-Dooley well No. 7 was drilled in Eddy County, New Mexico, to a depth of 6,683 feet and passed through a thick section of Permian rocks, including the Rustler, Salado, Carlsbad, Capitan, Delaware Mountain, and into the top of the Bone Spring limestone.
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Geothermal Gradients Through Time

1984
Temperature-depth curves (geotherms) on a global scale are controlled by the overall cooling of the Earth as limited by its thermal boundary layers. On global length scales and 109a. time scales, the geothermal gradient in the continental lithosphere is likely to have decreased substantially, reflecting the progressive decrease in heat production from ...
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Geothermal Gradients and Their Application to Petroleum Geology

Mountain Geologist, 1969
ABSTRACT: The geothermal gradient is the rate of temperature increase with depth which is determined by dividing the difference in temperature between two vertical points by the vertical distance between them. Various methods of obtaining subsurface temperatures include temperature measuring devices.
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Normal Geothermal Gradient in United States

AAPG Bulletin, 1935
ABSTRACT The objects in preparing this paper have been, first, to prepare a brief summary of the gradients deduced from recent geothermal surveys in the United States; and second, to discuss the data thus summarized from the standpoint of a normal geothermal gradient.
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Geothermal Gradients in Mississippi Embayment: ABSTRACT

AAPG Bulletin, 1983
A statistical analysis of bottom-hole temperatures from oil and gas wells in the northern Mississippi embayment suggests that the geothermal gradient below a depth of 1 km is low (22.2°C/km) and for the New Madrid seismic zone, it is even lower (15.7°C/km).
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GEOTHERMAL GRADIENTS AND GEOTHERMAL OIL GENERATION IN SOUTHERN IRAQ: A PRELIMINARY INVESTIGATION

Journal of Petroleum Geology, 1984
Local geothermal gradients in South Iraq were used in calculating the time‐temperature indices of source rock maturation, as modified by Waples (1980). Accordingly, Cretaceous, Jurassic, Triassic and probably Paleozoic rocks are calculated to be with in the thermal petroleum generative zone in several parts of southern Iraq.
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