Deep hydraulic fracturing stress measurements in the KTB (Germany) and Cajon Pass (USA) Scientific Drilling Projects: A summary

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Abstract

The determination of in situ stresses along deep vertical profiles was declared a key issue for two scientific deep drilling projects:

  • the German Continental Deep Drilling Project (KTB) situated in northeast Bavaria in an area of complex variscian thrust tectonics and

  • the CAJON PASS Project, located only about 4 km from the San Andreas Fault Zone In southern California.

In the KTB project 7 successful hydrofrac stress measurements could be completed in a 4 km deep pilot hole between 0.8 to 3.0 km. At the Cajon Pass site a series of 23 hydrofrac stress measurements was performed in 2 wells between 0.9 to 3.5 km.

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Publication type Conference Paper
Publication Subtype Conference Paper
Title Deep hydraulic fracturing stress measurements in the KTB (Germany) and Cajon Pass (USA) Scientific Drilling Projects: A summary
Volume 3
Year Published 1993
Language English
Publisher International Society for Rock Mechanics
Description 6 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title 7th ISRM Congress
First page 1685
Last page 1690
Conference Title 7th ISRM Congress
Conference Location September 16-20, 1991
Conference Date Aachen, Germany
Country Germany, United States
State Bavaria, California
Other Geospatial Cajon Pass
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