ASTM D 4645 : 1987 : R1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Determination of the In-Situ Stress in Rock Using the Hydraulic Fracturing Method
Hardcopy , PDF
09-09-2020
English
01-01-1997
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
D 18
|
| DocumentType |
Test Method
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| Pages |
7
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy |
1.1 This test method covers the determination of the in-situ state of stress in rock by hydraulic fracturing.
Note 1-Hydraulic fracturing for stress determination is also referred to as hydrofracturing, and sometimes as minifracing. Hydraulic fracturing and hydrofracturing may also refer to fracturing of the rock by fluid pressure for the purpose of altering rock properties, such as permeability and porosity.1.2 Hydraulic fracturing is the only widely accepted field method available for in situ stress measurements at depths greater than 50 m. It can be used in drill holes of any diameter.
1.3 Hydraulic fracturing can also be used in short holes for which other stress measuring methods, such as overcoring, are also available. The advantage of hydraulic fracturing is that it yields stresses averaged over a few square metres (the size of the induced hydraulic fracture) rather than over grain size areas, as in the case of overcoring techniques.
1.4 The values stated in SI units are to be regarded as the standard.
1.5 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
| ASTM D 420 : 2018 | Standard Guide for Site Characterization for Engineering Design and Construction Purposes |
| ASTM D 5434 : 2012 | Standard Guide for Field Logging of Subsurface Explorations of Soil and Rock (Withdrawn 2021) |
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