ASTM D5753-2005(2010) 8125 Standard Guide for Planning and Conducting Borehole Geophysical Logging《地球物理测井管道钻孔的标准指南》.pdf

1、Designation: D5753 05 (Reapproved 2010)Standard Guide forPlanning and Conducting Borehole Geophysical Logging1This standard is issued under the fixed designation D5753; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la

2、st revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide covers the documentation and general pro-cedures necessary to plan and conduct a geophysical logprogram as co

3、mmonly applied to geologic, engineering,ground-water, and environmental (hereafter referred to asgeotechnical) investigations. It is not intended to describe thespecific or standard procedures for running each type ofgeophysical log and is limited to measurements in a singleborehole. It is anticipat

4、ed that standard guides will be devel-oped for specific methods subsequent to this guide.1.2 Surface or shallow-depth nuclear gages for measuringwater content or soil density (that is, those typically thought ofas construction quality assurance devices), measurementswhile drilling (MWD), cone penetr

5、ometer tests, and loggingfor petroleum or minerals are excluded.1.3 Borehole geophysical techniques yield direct and indi-rect measurements with depth of the (1) physical and chemicalproperties of the rock matrix and fluid around the borehole, (2)fluid contained in the borehole, and (3) construction

6、 of theborehole.1.4 To obtain detailed information on operating methods,publications (for example, 2, 5, 7, 18, 24, 29, 34, 35, and 36)2should be consulted. A limited amount of tutorial informationis provided, but other publications listed herein, including aglossary of terms and general texts on th

7、e subject, should beconsulted for more complete background information.1.5 This guide provides an overview of the following: (1)the uses of single borehole geophysical methods, (2) generallogging procedures, (3) documentation, (4) calibration, and (5)factors that can affect the quality of borehole g

8、eophysical logsand their subsequent interpretation. Log interpretation is veryimportant, but specific methods are too diverse to be describedin this guide.1.6 Logging procedures must be adapted to meet the needsof a wide range of applications and stated in general terms sothat flexibility or innovat

9、ion are not suppressed.1.7 This standard does not purport to address all of thesafety and liability concerns, if any, (for example, lost orlodged probes and radioactive sources3) associated with itsuse. It is the responsibility of the user of this standard toestablish appropriate safety and health p

10、ractices and deter-mine the applicability of regulatory limitations prior to use.1.8 This guide offers an organized collection of informationor a series of options and does not recommend a specificcourse of action. This document cannot replace education orexperience and should be used in conjunction

11、 with professionaljudgment. Not all aspects of this guide may be applicable in allcircumstances. This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged, nor should thisdocument be applied without considerat

12、ion of a projects manyunique aspects. The word “Standard” in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.2. Referenced Documents2.1 ASTM Standards:4D653 Terminology Relating to Soil, Rock, and ContainedFluidsD5088 Practice for Decontamin

13、ation of Field EquipmentUsed at Waste SitesD5608 Practices for Decontamination of Field EquipmentUsed at Low Level Radioactive Waste Sites3. Terminology3.1 DefinitionsDefinitions shall be in accordance withTerminology D653.3.2 Definitions of Terms Specific to This Standard: Descrip-tions of Terms Sp

14、ecific to This StandardTerms shall be inaccordance with Ref (1).4. Summary of Guide4.1 This guide applies to borehole geophysical techniquesthat are commonly used in geotechnical investigations. This1This guide is under the jurisdiction ofASTM Committee D18 on Soil and Rockand is the direct responsi

15、bility of Subcommittee D18.01 on Surface and SubsurfaceCharacterization.Current edition approved May 1, 2010. Published September 2010. Originallyapproved in 1995. Last previous edition approved in 2005 as D575305. DOI:10.1520/D5753-05R10.2The boldface numbers in parentheses refer to a list of refer

16、ences at the end ofthis standard.3The use of radioactive materials required for some log measurements isregulated by federal, state, and local agencies. Specific requirements and restrictionsmust be addressed prior to their use.4For referenced ASTM standards, visit the ASTM website, www.astm.org, or

17、contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.guide briefly desc

18、ribes the significance and use, apparatus,calibration and standardization, procedures and reports forplanning and conducting borehole geophysical logging. Thesetechniques are described briefly in Table 1 and their applica-tions in Table 2.54.2 Many other logging techniques and applications aredescri

19、bed in the textbooks in the reference list. There are anumber of logging techniques with potential geotechnicalapplications that are either still in the developmental stage orhave limited commercial availability. Some of these techniquesand a reference on each are as follows: buried electrode direct

20、current resistivity (37), deeply penetrating electromagnetictechniques (38), gravimeter (39), magnetic susceptibility (40),magnetometer, nuclear activation (41), dielectric constant (42),radar (50), deeply penetrating seismic (39), electrical polariz-ability (45), sequential fluid conductivity (46),

21、 and diameter(48). Many of the guidelines described in this guide also applyto the use of these newer techniques that are still in the researchphase. Accepted practices should be followed at the presenttime for these techniques.5. Significance and Use5.1 An appropriately developed, documented, and e

22、xecutedguide is essential for the proper collection and application ofborehole geophysical logs.5.1.1 The benefits of its use include improving the follow-ing:5.1.1.1 Selection of logging methods and equipment,5.1.1.2 Log quality and reliability, and5.1.1.3 Usefulness of the log data for subsequent

23、displayand interpretation.5.1.2 This guide applies to commonly used logging methods(see Table 1 and Table 2) for geotechnical investigations.5.1.3 It is essential that personnel (see 7.3.3) consult up-to-date textbooks and reports on each of the logging techniques,applications, and interpretation me

24、thods. A partial list ofselected publications is given at the end of this guide.5.1.4 This guide is not meant to describe the specific orstandard procedures for running each type of geophysical logand is limited to measurements in a single borehole.6. Apparatus6.1 Geophysical Logging System, includi

25、ng probes, cable,draw works, depth measurement system, interfaces and surfacecontrols, and digital and analog recording equipment.6.1.1 Logging probes, also called sondes or tools, enclosethe sensors, sources, electronics for transmitting and receivingsignals, and power supplies.6.1.2 Logging cable

26、routinely carries signals to and from thelogging probe and supports the weight of the probe.6.1.3 The draw works move the logging cable and probe upand down the borehole and provide the connection with theinterfaces and surface controls.6.1.4 The depth measurement system provides probe depthinformat

27、ion for the interfaces and surface controls and record-ing systems.6.1.5 The surface interfaces and controls provide some or allof the following: electrical connection, signal conditioning,power, and data transmission between the recording systemand probe.6.1.6 The recording system includes the digi

28、tal recorder andan analog display or hard copy device.7. Calibration and Standardization of Geophysical Logs7.1 General:7.1.1 National Institute of Standards and Technology(NIST) calibration and operating procedures do not exist forthe borehole geophysical logging industry. However, calibra-tion or

29、standardization physical models are available (seeAppendix X1).7.1.2 Geophysical logs can be used in a qualitative (forexample, comparative) or quantitative manner, depending onthe project objectives. (For example, a gamma-gamma log canbe used to indicate that one rock is more or less dense thananot

30、her, or it can be expressed in density units.)7.1.3 The calibration and standardization scope and fre-quency shall be sufficient for project objectives.7.1.3.1 Calibration or standardization should be performedeach time a logging probe is modified or repaired or at periodicintervals.7.2 Calibration:

31、7.2.1 Calibration is the process of establishing values forlog response. It can be accomplished with a representativephysical model or laboratory analysis of representativesamples. Calibration data values related to the physical prop-erties (for example, porosity) may be recorded in units (forexampl

32、e, pulses/s or m/ft) that can be converted to apparentporosity units.7.2.1.1 At least three, and preferably more, values areneeded to establish a calibration curve, and the interface orcontact between different values in the model should berecorded. Because of the variability in subsurface condition

33、s,many more values are needed if sample analyses are used forcalibration.7.2.1.2 The statistical scatter in regression of core analysisagainst geophysical log values may be caused by the differencebetween the sample size and geophysical volume of investiga-tion and may not represent measurement erro

34、r.7.2.2 Physical ModelsA representative model simulatesthe chemical and physical composition of the rock and fluids tobe measured.7.2.2.1 Physical models include calibration pits, coils, resis-tors, rings, temperature baths, etc.7.2.2.2 The calibration of nuclear probes should be per-formed in a phy

35、sical model that is nearly infinite with respectto probe response.7.2.2.3 Some probes have internal devices such as resistors,but this does not substitute for checking the probe response inan environment that simulates borehole conditions, and the useof such devices is considered standardization.7.2

36、.2.4 Calibration FacilitiesCommonly used calibrationpits or models for use by anyone at the present time are listedin Appendix X1 (14-18). The user should inquire concerningthe present validity of any facility.7.2.3 Sample Analyses:5The references indicated in these tables should be consulted for de

37、tailedinformation on each of these techniques and applications.D5753 05 (2010)2TABLE 1 Common Geophysical LogsType of Log(References)Varieties andRelated TechniquesPropertiesMeasuredRequired HoleConditionsOther LimitationsTypical MeasuringUnits andCalibration orStandardizationBrief ProbeDescriptionS

38、pontaneouspotential (7,8,12)differential electric potentialcaused by salinitydifferences inborehole andinterstitial fluids,streaming potentialsuncased hole filledwith conductive fluidsalinity differenceneeded betweenborehole fluid andinterstitial fluids;needs correction forother than NaClfluidsmV; c

39、alibratedpower supplyrecords naturalvoltages betweenelectrode in well andanother at surfaceSingle-pointresistance (7)conventional,differentialresistance of rock,saturating fluid, andborehole fluiduncased hole filledwith conductive fluidnot quantitative;hole diametereffects aresignificantV;V-V meter

40、constant currentapplied across leadelectrode in well andanother at surfaceof wellMulti-electroderesistivity (7,8,13)various normalfocused, guard,lateral arraysresistivity andsaturating fluidsuncased hole filledwith conductive fluidreverses or providesincorrect values andthickness in thinbedsV-m; res

41、istorsacross electrodescurrent and potentialelectrodes in probeand remote currentand potentialelectrodesInduction (10, 11) various coilspacingsconductivity orresistivity of rockand saturating fluidsuncased hole ornonconductivecasing; air or fluidfillednot suitable for highresistivitiesmS or V-m;stan

42、dard dry airzero check orconductive ringtransmitting coil(s)induce eddycurrents information; receivingcoil(s) measuresinduced voltagefrom secondarymagnetic fieldGamma (5,7,22) gamma spectral (44) gamma radiationfrom natural orartificialradioisotopesany hole conditions may be problemwith very large h

43、ole,or several strings ofcasing and cementpulses per secondor API units; gammasourcescintillation crystaland photomultipliertube measuregamma radiationGamma-gamma (23,24)compensated (dualdetector)electron density optimum results inuncased hole; canbe calibrated forcasingsevere hole-diameter effects;

44、difficulty measuringformation densitythrough casing ordrill stemgs/cm3; Al, Mg, orLucite blocksscintillation crystal(s)shielded fromradioactive sourcemeasure Comptonscattered gammaNeutron (7, 14, 25) epithermal, thermal,compensatedsidewall, activation,pulsedhydrogen content optimum results inuncased

45、 hole; canbe calibrated forcasinghole diameter andchemical effectspulses/s or APIunits; calibration pitor plastic sleevecrystal(s) or gas-filled tube(s)shielded fromradioactive neutronsourceAcoustic velocity (5,26, 27)compensated,waveform, cementbondcompressional wavevelocity or transittime, orcompr

46、essional waveamplitudefluid filled, uncased,except cement bonddoes not detectsecondary porosity;cement bond andwave form requireexpert analysisvelocity units, forexample, ft/s or m/sor s/ft; steel pipe1 or moretransmitters and 2or more receiversAcoustic televiewer(28, 7)acoustic caliper acoustic ref

47、lectivityof borehole wallfluid filled, 3 to 16-in. diameter;problems indeviated holesheavy mud or mudcake attenuatesignal; very slowlogging speedorientated image-magnetometer mustbe checkedrotating transducersends and receiveshigh-frequencypulsesBorehole video axial or side view(radial)visual image

48、ontapeair or clean water;clean borehole wallmay need specialcableNAAvideo camera andlight sourceCaliper (29, 7) oriented, 4-armhigh-resolution, x-yor max-min bowspringborehole or casingdiameterany conditions deviated holes limitsome types;significant resolutiondifference betweentoolsdistance units,

49、forexample, in.; jig withholes or rings1 to 4 retractablearms contactborehole wallTemperature (30,31, 32)differential temperature of fluidnear sensorfluid filled large variation inaccuracy andresolution of toolsC or F; ice bath orconstanttemperature baththermistor or solid-state sensorFluid conductivity (7) fluid resistivity most measureresistivity of fluid inholefluid filled accuracy varies,requirestemperaturecorrectionS/cm or V-m;conductivity cellring electrodes in atubeFlow (12, 33, 7) impellers, heat pulse vertical velocity offluid columnfluid filled impellers requirehi