The Development and Evaluation of a Field Method for In-situ Stress Determination Using Hydraulic Fracturing
The Development and Evaluation of a Field Method for In-situ Stress Determination Using Hydraulic Fracturing

Author: Jean-Claude Roegiers

Publisher:

Published: 1974

Total Pages: 598

ISBN-13:

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The Deep Stress Probe, a special field tool, has been developed for use in determining in-situ stresses at great depth in rock masses. The tool, adapted from oil well logging equipment, features orientation and downhole pressure recording components and needs only one lowering for each complete measurement at a certain horizon. A Laboratory technique was developed to control fracture propagation in laboratory tests simulating practical hydraulic fracturing situations. These studies reveal that permeability may increase dramatically prior to macroscopic fracture in hydraulic fracturing. This is very significant and allows a better understanding of the factors affecting the breakdown pressure (rate of loading, viscosity of fracturing fluid).

Pressuremeter Testing
Pressuremeter Testing

Author: R. J. Mair

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 169

ISBN-13: 1483102254

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Pressuremeter Testing: Methods and Interpretation the history, applications, and development of pressumeter devices and related test procedures. The book covers topics such as the general principles of pressuremeter testing; types of pressuremeters and their installation and calibration; and the estimation of soil from pressuremeter tests in clays, sands, and weak rocks. Also included are topics such as the application of pressuremeter testing to design and research in the improvement of the use of pressuremeters. An appendix is also included; Appendix A covers the analysis of pressuremeter tests, and Appendix B contains guidance notes for the specifications of pressuremeter tests. The text is recommended for engineers and geologists who would like to know more about the applications of the pressuremeter and the interpretation of its results.