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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract

Pub. Id: A177 (1981)

First Page: 541

Last Page: 551

Book Title: SG 12: Energy Resources of the Pacific Region

Article/Chapter: Utilization of Magma Energy--Project Summary

Subject Group: Energy Minerals, Etc.

Spec. Pub. Type: Studies in Geology

Pub. Year: 1981

Author(s): J. L. Colp, H. M. Stoller (2)

Abstract:

The scientific feasibility of extracting energy from magma bodies is the objective of this project. The high temperature (~1,000°C) and estimated large resource (~10,000 quads) within 10 km depth in the United States provides the incentive for this work. The areal extent of a near-surface molten lava body has been defined with geophysical sensing systems. Improved knowledge of the in-situ physical properties of buried molten rock is required to assess the thickness of magma bodies. Drilling into molten lava has demonstrated that it is a complex operation and requires further technologic development. Experimental studies of rock deformation at near-magma temperatures and pressure show a possibility that boreholes will or can be made to stay open. Calculational analyses of magmatic gas samples have provided a satisfactory definition of the gas content of in-situ magmas. Material compatibility experiments have shown that nickel- and cobalt-based alloys can be expected to survive and operate in the magma environment. Thermal heat exchangers have been shown to be capable of survival in molten rock and accomplish significant rates of heat transfer to an internal fluid.

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