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Description of ASTM-D6726 2007ASTM D6726 - 01(2007)Standard Guide for Conducting Borehole Geophysical Logging - Electromagnetic InductionActive Standard ASTM D6726 | Developed by Subcommittee: D18.01 Book of Standards Volume: 04.09 ASTM D6726Significance and Use An appropriately developed, documented, and executed guide is essential for the proper collection and application of induction logs. This guide is to be used in conjunction with Guide D5753 . The benefits of its use include improving: selection of induction logging methods and equipment; induction log quality and reliability; and usefulness of the induction log data for subsequent display and interpretation. This guide applies to commonly used induction logging methods for geotechnical applications. It is essential that personnel (see Section 8.3.2, Guide D5753 ) consult up-to-date textbooks and reports on the induction technique, application, and interpretation methods. 1. Scope 1.1 This guide is focused on the general procedures necessary to conduct electromagnetic-induction, induction, electromagnetic-conductivity, or electromagnetic-resistivity logging (hereafter referred as induction logging) of boreholes, wells, access tubes, caissons, or shafts (hereafter referred as boreholes) as commonly applied to geologic, engineering, groundwater and environmental (hereafter referred as geotechnical) investigations. Induction logging for minerals or petroleum applications is excluded. 1.2 This guide defines an induction log as a record of formation electrical conductivity or resistivity with depth as measured by the induction method in a borehole. 1.2.1 Induction logs are treated quantitatively and should be interpreted with other logs and data whenever possible. 1.2.2 Induction logs are commonly used to: ( 1 ) delineate lithology; ( 2 ) evaluate formation water quality and effective porosity, and ( 3 ) correlate stratigraphy between boreholes. 1.3 This guide is restricted to induction measurements that are at a frequency of less than 50 KHz; are non-directional; and average formation properties around the circumference of the borehole; which are the most common induction measurement devices used in geotechnical applications. 1.4 This guide provides an overview of induction logging including ( 1 ) general procedures; ( 2 ) specific documentation; ( 3 ) calibration and standardization; and ( 4 ) log quality and interpretation. 1.5 To obtain additional information on induction logs see References section in this guide. 1.6 This guide is to be used in conjunction with Standard Guide D5753 . 1.7 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This guide should not be used as a sole criterion for induction logging and does not replace education, experience, and professional judgement. Induction logging procedures should be adapted to meet the needs of a range of applications and stated in general terms so that flexibility or innovation are not suppressed. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged without consideration of a project's many unique aspects. The word standard in the title of this document means that the document has been approved through the ASTM consensus process. 1.8 The geotechnical industry uses English or SI units. The induction log is typically recorded in millisiemens per meter (mS/m) or millimhos per meter (mmhos/m). 1.9 This standard does not purport to address all of the safety concerns, 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 requirements prior to use.
ASTM Standards D420 Guide to Site Characterization for Engineering Design and Construction Purposes D653 Terminology Relating to Soil, Rock, and Contained Fluids D5088 Practice for Decontamination of Field Equipment Used at Waste Sites D5608 Practices for Decontamination of Field Equipment Used at Low Level Radioactive Waste Sites D5730 Guide for Site Characterization for Environmental Purposes With Emphasis on Soil, Rock, the Vadose Zone and Ground Water D5753 Guide for Planning and Conducting Borehole Geophysical Logging D6167 Guide for Conducting Borehole Geophysical Logging: Mechanical Caliper D6235 Practice for Expedited Site Characterization of Vadose Zone and Groundwater Contamination at Hazardous Waste Contaminated Sites D6274 Guide for Conducting Borehole Geophysical Logging - Gamma D6429 Guide for Selecting Surface Geophysical Methods D6431 Guide for Using the Direct Current Resistivity Method for Subsurface Investigation Keywords borehole geophysics; electrical conductivity; electromagnetic-induction log; groundwater; induction; resistivity; water quality; well logging: Access tubes; Borehole geophysical logging; Caissons; Electric logging; Engineering criteria/design--soil/rock/related materials; Fluid conductivity/resistivity logging; Geological investigations; Geophysical investigations/geophysics; Geotechnical engineering materials/processes; Ground water; Hydrogeologic models/investigations; Induction logging; Lithology; Logging; Resistivity logging; Stratigraphic correlation/description; Water quality monitoring; Well logging; ICS Code ICS Number Code 07.060 (Geology. Meteorology. Hydrology); 33.100.01 (Electromagnetic compatibility (EMC) in general) DOI: 10.1520/D6726-01R07 ASTM International is a member of CrossRef. ASTM D6726This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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