User Guide
Contents
1. P 333i m HHTHH TARRE E d User Guide QL40 ELOG IP Normal Resistivity and Induced Polarization Probe Advanced Logic Technology Advanced Logic Technology sa Bat A Route de Niederpallen L 8506 Redange sur Attert Luxembourg Phone 352 23 649 289 Fax 352 23 649 364 Email support alt lu Web www alt lu Mount Sopris Instruments 4975 E 41 Avenue Denver CO 80216 USA Phone 303 279 3211 Email sales mountsopris com Web www mountsopris com V2013 07 31 Table of Contents 1 General informatio sssini aaa a a arae 1 1 1 HMEN ONS ea S a a a Sane eer mer one De rene aaa 2 1 2 QL40 ELOG IP Technical Specifications cccceessesseeeccccccseeeseeeeeeeeeeeseseeeeceeeseeeess 3 Measurement Principle usica EEA EEE E a a 5 QL40 ELOG IP assembly and Set Up ccsscssscsscssccsccsscsscceccecccsscccescsscecceseesccescesssesees 6 3 1 Note on use of the bridle 0 ceccesecsseessneecssesessaeessseecssaeessneeeseatens 8 3 22 QLA ELOG IP Seb UD vanishes ieee eee 8 3 3 Notes on QL tool aSSeEMDbIY ccc ccescccseceeseeesseeesseeseeesseeesseseeeeeaes 10 3 4 QL40 stack ASSeMmDIY nnicannuni n a a 10 Operating Procedu euroetan E A OA aN 14 LE UE A e a aN n a a a E 14 4 2 Tool Communication with ALT LOgger esessseseesessresssreresrrerssreresererssrreesrrereserresene 15 43 Tool Communication with MATRIX erener a NOES 15 4 4 Configuring Tool ParaMeters2. scccccsssccscssssecconsvsccenssscneusvescousvecuenssscnensssessenssss 17 4 5 Recorded Parameters Processors and BrOWSEYSS ccecceccscesceeceeseeccesceseesesceseucss 18 4 5 1 Recoraed parameter Seorsa e T 18 4 5 2 MCENNUMBTOWS ef inas nonsui onn an A AAE 19 4 5 3 ID VVAVE BOWS Or onua T EE esata 20 4 5 4 MEPCUrVSBrOWS E rena a a a a iets 22 4 5 5 WV CIICAD BROWSE sriaar iaaddgadoneoiauanedes 23 Performance Check amp Calibration iicicncsi ences ucesesteeenwtscsseutiss lt Gonveideeuvbetauiutsssccarvecse aus 24 5 1 Calibration Procedure isa A 24 Maintenance sisiraan E 27 6 1 Upgrading firmware cc cccccccsccssscceesseeeesseeesssseeessneeesssseeesseeessseeeseas 27 6 1 1 Checking the communication ccc ceseceteeesteessseeeeseessneeesees 27 6 1 2 Upgrading the firmware c cc ccccccesceeeseeseseeessseeessseesseeeens 28 Troubleshooting sisecscsscecctoicesowce sie niatenticinnts E aE EE 30 Disassembly INStructiOns ccccccesseccccssccccsesececceecceeeesececsueceeeeeecceseusecessuneceesegeeeetas 30 PADD OIIGIN aoan a A E aude ee ae eae 32 ok Pans Stra a etnaree anne a aadaenc una nusesemaeeactenouetaee 32 8 2 Bridle wiring configurations ec cccscccesteccseneeeesseeeesssseesseeesssseeeeeas 32 8 2 1 QL40 IS4 bridle configuration for 4 conductor wireline 32 8 2 2 QL40 IS1 MSI and QL40 IS2 GO1 bridle configurations for single conductor w
3. and 64 electrodes for the IP measurement configuration A chargeability of 10ms should be read in the MChNum browser Advanced Logic Technology Mount Sopris Instruments 26 5 Performance Check amp Calibration www alt lu www mountsopris com 6 Maintenance 27 6 Maintenance Warning Removing the electronic chassis from pressure housing without prior consultation with ALT MSI will void the tool warranty The QL40 series tools require periodic maintenance Make sure the threads on the brass nut on the sub bottom are free of sand mud or other dirt A thin layer of anti seize is recommended When disassembling the sub string dry the joint as it is separated to prevent fluid from entering the sub top and getting into the electrical connector inside After replacing top and bottom protectors it is good to wash the probe off after each use Never take the probe apart This probe is very difficult to disassemble and requires special steps to be taken in order to gain access to the inside of the probe without damaging the electronics If you have read this after attempting to disassemble the probe chances are the probe has experienced damage and will need to be sent to the factory to be repaired Inspect o rings occasionally and keep the threads on both ends of the probe clean to minimize problems in the future 6 1 Upgrading firmware In accordance with the ALT policy of continuous development the tool has been designed to allow firmw
4. Altlogger Always use the bridle Optional 8m of insulated wireline and mud stake on surface can be used as a substitution of the bridle BBOX Always use the bridle Optional 8m of insulated wireline and mud stake on surface can be used as a substitution of the bridle 3 2 QL40 ELOG IP set up The QL40 ELOG IP sub can be used as a standalone tool or in a tool string when combined with other subs When used as a standalone tool follow the assembly procedure below 1 Screw the QL40 isolated bottom plug at the bottom end of the QL40 ELOG IP sub www alt lu www mountsopris com 3 QL40 ELOG IP assembly and set up 9 Figure 3 4 Attaching the QL40 Bottom Plug 2 Attach the isolation bridle at the top of the QL40 ELOG IP sub 3 Insulate with tape the mechanical joint between the sub and bridle It is important that all metal parts are covered with tape at the exception of the injection and measuring electrodes to prevent a direct current return to this point rather than to the cable armor Figure 3 5 bridle connection and isolation 4 Insulate the bridle cable head connection above the fish and 7 meters of wireline above the cable head When the QL40 ELOG IP is used in combination with other subs the bottom and top subs must be fully covered with an insulating sleeve Refer to chapter 3 3 below for complementary information on the QL tools assembly Advanced Logic Technology Mount Sopris Instruments 1
5. ll NI I AT T PST ST tt S T l Figure 1 2 Accuracy versus resistivity www alt lu 2 Measurement principle 5 2 Measurement Principle The QL40 ELOG IP has 5 electrodes which are used for measuring normal resistivity at 4 spacings spontaneous potential and single point resistance The QL40 ELOG IP sub must have an isolation bridle placed above it to provide a remote reference electrode for the normal resistivity channels and a remote return for the injection current The SP spontaneous potential is measured between the 64 normal measure electrode and armor The data recorded as SP or VSP measures the natural voltages sensed by this electrode These voltages can be related to both electrochemical and electrokinetic forces in the borehole The electrochemical SP is developed when there is a difference between the formation fluid and borehole fluid salinities and occurs normally when the measure electrode passes a clay or shaly zone which acts as an ion selective membrane The resulting current flow in a cell comprised of those three elements provides a negative SP if the borehole fluid is less conductive than the formation fluid In fresh water zones the SP is often positive The electrokinetic SP can occur when borehole fluid mechanically invades porous and permeable formation causing a current flow The SPR is measured between the A current injection electrode on the bottom of the probe and the isol
6. 75 44 1308 Figure 4 12 MchCurve Browser window 4 5 5 WellCAD Browser WellICAD LHO20 summary WCL E Fie Edit View Process Tools Window Help Oe BA oo Kae eh GR ifm vi t s smn e 194 ASTEROPE 7 A A IANNIS y A y YAN fA it RSA N ao y R VA E A E RASE Ka AAR AARC ARR Na Fh wai Nips CARM TEMENE JE EIE ETET SR TON DMM MON NOM PAUA For Help press F1 16 42 Figure 4 13 WellCAD browser Advanced Logic Technology Mount Sopris Instruments 24 5 Performance Check amp Calibration 5 Performance Check amp Calibration Calibrations are performed at the factory Each QL40 ELOG IP is delivered with a calibrated sub file that must be used for that specific tool It is also possible to calibrate the tool before a field operation using the suitable ELOG Calibrator see below Figure 5 1 ELOG Calibrator 5 1 Calibration procedure A calibration box is supplied with the QL40 ELOG IP to verify the tool performance Refer to the procedure described below 1 Assemble the tool sub s and connect to the wireline 2 Connect the cables and clamps between the ELOG Calibrator and QL40 ELOG IP tool as per the diagram shown on the box www alt lu www mountsopris com 5 Performance Check amp Calibration 25 Figure 5 2 ELOG Calibrator configuration diagram 3 Inthe Tool Panel Select the proper tool stack Turn tool power On 4 Inthe Acquisition Panel select T
7. Check all connections ne Age nen POWENNTON J Adjust the telemetry settings for your wireline configuration MELOO see chapter 3 2 or 3 3 and store the new settings as default Apply the appropriate tool settings for your logging run see chapter 3 4 Tool panel No current Verify that the wireline armour is connected to the logging system Test your interface cable between winch and data acquisition system Verify cable head integrity Verify voltage output at the cable head it should be 120V Tool panel Too much current Immediately switch off the tool red area Possible shortcut voltage low current high Check for water ingress and cable head integrity wireline continuity Verify the interface cable between winch slip ring and data acquisition system is not loose at the connectors Check for possible source of the short circuit If the above shows no issues use test cable provided by ALT to verify tool functionality If the problem still occurs please contact service centre Telemetry panel status Verify the telemetry settings for your wireline configuration shows red see chapter 3 2 or 3 3 www alt lu www mountsopris com 7 Troubleshooting 31 If problem cannot be resolved contact support alt lu or tech support mountsopris com Telemetry panel memory Indicates that the systems internal memory buffer is full PC buffer shows 100 can t receive incoming data streams fast en
8. 0 3 QL40 ELOG IP assembly and set up 3 3 Notes on QL tool assembly QL stands for Quick Link and describes an innovative connection between logging tools subs allowing the assembly of custom tool stacks QL40 describes a specific family of logging tools Each sub is equipped with its own telemetry board power supply element and A D converter permitting operation either as a stand alone tool or stacked in combination with other subs of the QL product family The QL40 probe line accommodates two types of sub Bottom Subs and Mid Subs Bottom Sub A bottom sub is a tool that has at least one sensor that must be located at the bottom of the stack It can be operated in combination with other QL subs connected to the top but it is not possible to connect another sub below When used in stand alone mode the bottom sub only needs the addition of a QL40 tool top adaptor that mates with the cable head Mid Sub A mid sub is a tool that can be integrated anywhere within a stack of tools When used at the bottom of a tool string a QL40 bottom plug must be used to terminate the string If the mid sub is used as a stand alone tool it needs a QL40 bottom plug at the lower end and a QL40 tool top adaptor at the top 3 4 QL40 stack assembly A QL40 tool stack may be terminated by either a QL40 bottom sub or a QL40 bottom plug At the top of the stack a QL40 tool top is required to connect the tool string to the cable head Several tool tops are alread
9. 1 click the Settings Commands button to configure your tool for the ELOG and or IP modes see chapter 3 4 for details 5 Inthe Acquisition panel Figure 4 2 select the sampling mode depth or time Click on Settings and specify the corresponding sampling rate Switch on the sampling click the ON button 6 Press the Record button in the Acquisition panel Figure 4 3 specify a file name and start the logging 7 During logging observe the controls in the Telemetry panel e Status must be valid green light e Bandwidth usage in green range e Memory buffer should be 0 e Number of Data increases and number of Errors negligible Figure 4 2 Acquisition panel Status Bandwidth usage Memory buffer Data sec Data Errors Figure 4 3 Telemetry panel 8 To end the logging procedure press the Stop button in the Acquisition panel and turn off the sampling click OFF button 9 Inthe Tool panel power off the tool www alt lu www mountsopris com 4 Operating Procedure 15 4 2 Tool Communication with ALT Logger The telemetry provided through the ALTLogger is self tuning In case communication status is not valid the user can manually adjust the settings In the Telemetry panel of the dashboard click on Settings to display the Configure Tool Telemetry dialog box Figure 4 3 A procedure to achieve valid communication is given below e Change the Baudrate to 41666 kbps e Verify that the Downhol
10. 40 ELOG IP assembly and set up The QL40 GAM can now be run stand alone Figure 3 12 13 Figure 3 10 QL40 GAM mid sub with tool top and bottom plug Advanced Logic Technology Mount Sopris Instruments 14 4 Operating Procedure 4 Operating Procedure Note Parts of the topics discussed in these sections below assume that the user is familiar with the LoggerSuite acquisition software Refer to the corresponding operator manuals for more details Information about assembly and configuration of tool stacks can be found in the same manuals 4 1 Quick Start 1 Connect the QL40 ELOG IP to your wireline and start the data acquisition software 2 Select the relevant ELOG IP tool from the drop down list Figure 4 1 in the software s Tool panel if your tool is not listed check that your tool configuration file is stored in the designated folder on your computer 3 Inthe Tool panel switch on the tool click On button and verify that the power indicator shows a valid green level The system goes through a short initialization sequence OTool AE G04 40 IP PLUG 40 Settings Commands Figure 4 1 Tool panel which sets the default parameters and communication settings held in the tool configuration file The configuration returned by the tool is also checked during this procedure Setup tool communication as explained in chapter 4 4 if error message is displayed 4 Onthe Tool panel Figure 4
11. 5 3 lpWave Browser The lpWave Browser window consists of 3 panes see A B and C in Figure 4 9 www alt lu www mountsopris com 4 Operating Procedure 21 SN ASTEROPE ipwave File view Help sss INJECTION INJECTION PEE E Deets 600 INJECTION ELEAS INJECTION VSP 0 79 aa T U avi ne 994 250 275 300 325 350 375 400 425 450 475 500 70 94 1218 194 ASTEROPE Figure 4 10 IpWave Browser window with three different wave displays Pane A displays the potential difference measured at the 16 blue curve and 64 electrodes red curve during the two injection and release periods In addition the Self Potential values measured at 16 and 64 electrodes are shown as base lines Pane B shows a normalized view of the raw potential measurements and the two SP baselines which have been subtracted before normalization The edged line in the browser window displays the normalized response integrated over the 10 time windows Pane C provides a combined view of the raw measurements during the two Release times and the average from each time window Controls in the toolbar of the window provide options to zoom scale and enable disable the curves 4 5 3 1 Calculation of IP Chargeability Response The chargeability labeled Ma is calculated by integrating the 10 average voltages in the release cycle units are V ms and then dividing by the injection voltage For a 250 ms inj rel time this means that the average releas
12. 7 conductor Digital data transmission Up to 500 Kbits per second depending on wireline Compatibility ALTlogger BBOX Matrix Electrode details Current electrode 50mm 304 stainless steel Measure electrodes 18mm 304 stainless steel Electrode reference measuring point from bottom of bronze knurled ring Spontaneous Potential SP 1 69m 8 Normal 0 16m 16 Normal 0 26m 32 Normal 0 47m 64 Normal 0 87m Single Point Resistance SPR 0 06m Measurement specifications Spontaneous Potential SP o Range 18V Resolution 0 5 mV o Accuracy 2 5 mV O 8 16 32 64 Normal o Range 0 1 to 100 000 Ohm m Resistivities and Single Point Resistance o Resolution lt 0 04 of measured value 24 bi 0 5 ms ADC with real time downhole digital filtering o Accuracy lt 1 of measured value from 1 to 5 000 Ohm m lt 5 of measured value from 5 000 to 50 000 Ohm m Advanced Logic Technology Mount Sopris Instruments 4 1 General Information Induced Polarization IP o User selectable injection release times measured on 16 and 64 100ms 250 500ms electrodes o 10 equal time window chargeability per spacing o Digitally controlled 8 watt downhole current generator o Simultaneous full wave digitizing of electrode voltages for both spacings o 24 bit 0 5 ms ADC with downhole real time filtering and processing o Resolution 1 2uV o Input impedance 1 4 M Ohm Error Ail Hil
13. L40 ELOG IP provides four normal resistivity measurements plus spontaneous potential SP and single point resistance In addition the IP function provides two digital Induced Polarization channels The IP uses the 16 and 64 inch electrodes as receivers and the current electrode as an IP charging source The probe measures the injection and relaxation voltages on both measure electrodes as a function of time This measurement is digitized and presented as 10 channels of time based data per depth interval for each spacing In addition a high resolution A D further breaks each channel into 10 more discrete samples providing a full wave presentation of the injection and relaxation decay A chargeability curve is also derived from the measurement Advanced Logic Technology Mount Sopris Instruments 2 1 General Information 1 1 Dimensions 64 00 1625 60 77 82 74 69 1976 60 1897 10 64 norma 32 normal gt 16 normal Injection Electrode Figure 1 1 Tool general arrangement www alt lu 1 General Information 3 1 2 QL40 ELOG IP Technical Specifications Tool Diameter 43mm 1 7 with neoprene heat shrink Length 1 9m 74 8 Weight 9 Kg 19 8 lbs Max Temp 70 C 158 F Max Pressure 200bar 2900 PSI Power requirements DC voltage at probe top Nominal 120 VDC Min 80 VDC Max 160 VDC Current source 32V pp square wave 16V at up 500 mA Cable Cable type Mono Coaxial 4 or
14. Upgrade Firmware Name lt GO4 40 IP PLUG 40 Length 2 15 Weight 10 195 Pressure 200 Power 300 mA 120 Sampling 1000 No data www alt lu www mountsopris com 6 Maintenance 29 2 The following message will appear Figure 6 3 Click Yes to validate your choice Jazz logging system Improper use of this procedure may cause non recoyverable tool malfunction Are You sure you want to proceed T This will upgrade the CAL tool internal Firmware using manufacturer supplied eprom image Figure 6 3 Warning Message during firmware upload 3 Select and open the appropriate hex file provided The upgrade will start 4 During the upgrade procedure the following message is displayed Firmware Upgrade X Tool firmware is curently beeing upgraded PLEASE ALLOW PROCEDURE TO GO TO FULL COMPLETION WITHOUT INTERRUPTION This may take a few minutes Figure 6 4 Firmware upgrade progress window 5 Once the upgrade has been successfully completed Figure 6 5 click on OK to turn off the tool Matrix logging system l The tool firmware upgrade has been completed successfully The tool power will now be switched off OK Figure 6 5 Successful upgrade 6 Power on the tool to start the upgraded firmware Note that the following error message Figure 6 6 will appear at the end of the procedure when the tool firmware upgrade has failed or has been aborted Verify the tool communication sett
15. ad A B c 5 680R E z 120R H AUX FISH voltage reference electrode AURA Not connected J WL Armour K eee Not connected L WLCOMM WL1 Advanced Logic Technology Mount Sopris Instruments
16. are upgrades Firmware upgrade procedure is as follows 1 Confirm that the communication is valid 2 Upgrade firmware 6 1 1 Checking the communication 1 Connect the tool to your acquisition system Start ALTLog Matrix software In the Tool panel select the appropriate tool and turn on the power In the Communication panel select Settings Check baud rate is set to 41666 and communication status is valid Figure 6 1 or Figure 6 2 a Configur Tool Telemetry Uphole Link Downhole Link Baudrate A nd a a Reset to default Discriminators Pulse width Store as default 45g 4 5 6 Status Vaid 3 7 3 7 2 8 2 8 1 9 1 9 0 0 0 0 L52 a Figure 6 1 Tool communication settings ALTLog Advanced Logic Technology Mount Sopris Instruments 28 6 Maintenance Configur ALT Telemetry Analysis Info Vertical scale multiply by Volt Div C Lin Log Configuration Done one Baudrate 41666 i Vaid Advanced gt gt Figure 6 2 Tool communication settings Matrix Warning Telemetry must be tuned properly Bad communication may abort the upgrade of the firmware 6 1 2 Upgrading the firmware 1 Right Click on the tool preview in the ToolStack Manager view and select Upgrade Firmware from the context menu ToolStack Manager BE Clings i Cunmnmanid Status Bandwidth usage Memory buffer Data sec Data Errors 2 Mono 18 1500m Efe
17. ated cable armor above the bridle This SPR is a qualitative indication of the electrical resistance of the formation material immediately adjacent to the current electrode The principal of measurement follows Ohm s law where R V I As the current flows toward the armor return the current density cross sectional area decreases dramatically This means that the majority of the resistance measured is influenced by the material closest to the current electrode For this reason the SPR is very sensitive to small changes in resistance close to the borehole The four Normal Resistivity measurements are made at the halfway between the A current injection electrode and each of the 4 M normal resistivity electrodes The normal resistivity measurement includes a reference electrode called N which is assumed to be at electrical infinity compared to the measure electrodes In this special application of Ohm s law V IR still applies but is re written as R V I ee a oem 2 or E cma I A l I I where G is called the geometric factor and is related to the A M spacing between electrodes In metric units G is approximately 12 5 AM spacing Note that for normal resistivity measurements the result is true resistivity p expressed in ohm m m It is important to remember that this application of Ohm s law assumes that the formation is homogenous and infinite Corrections for borehole size borehole formation fluid ratio and bed thickn
18. calibration check before a logging operation Refer to chapter 5 for Performance and calibration check a moe i CALIBRATOR g y IP i0 ms i 10000 Ohmm 7 100 Ohmm 7 100 Ohmm 1 hmm 7 O E om PAJ ago z Teceeo Al al H i as rk kh a ier F one Figure 3 3 ELOG Calibrator cables and clamps Advanced Logic Technology Mount Sopris Instruments 8 3 QL40 ELOG IP assembly and set up 3 1 Note on use of the bridle The bridle is comprised of 8 meters of insulated cable with a remote electrode located at the top called the reference potential electrode or fish The standard bridle is provided with a GO4 male or MSI single connection at the top end and QL40 female connection at the sub end The bridle is electrically and mechanically compatible with the QL40 ELOG IP and QL40 DLL3 subs The function of the bridle is to maintain a separation between the source of current the injection electrode A and the reference potential electrode in order to force the injected current to travel into the formation The injected current returns to the cable armor beyond the bridle section In most configurations the QL40 ELOG IP must be operated with an isolation bridle Refer to the table below to review the different valid configurations Acquisition system Single conductor wireline 4 or 7 conductor wireline Always use the bridle Always use the bridle
19. ced Tool Parameters Ed Options Disable Fullwave option Figure 4 7 Advanced Settings Dialog Box If this box is checked the recorded data file will not include the full wave information The default setting is to leave the box unchecked to enable the full wave recording 4 5 Recorded Parameters Processors and Browsers 4 5 1 Recorded parameters When measurements are made in IP mode each Release period is subdivided into ten time windows The measurements made during the same time window in both Release periods will be combined into the final IP response output The following data channels are recorded by the QL40 ELOG IP tool Table 1 Depending on the mode IP or Resistivity in which the tool is operated different channels are recorded VSP to injection Current mA V16 V32 v64 www alt lu www mountsopris com 4 Operating Procedure 19 Release periods Release periods SPR N83 8 normal resistivity Ohm m N16 N32 N64 64 normal resistivity Ohm m IPlin16 n n 1 to 10 Ratio of potential differences Release over Injection from A E E VI IPlin64 n n 1 to 10 Ratio of potential differences Release over Injection from PennNet Sen window at S eectede VM IPFW16 Ratio of potential differences Release over Injection at 16 A s IPFW64 Ratio of potential differences Release over Injection at 64 rem a VMI Table 1 Recorded data channels 4 5 2 MChNum Browser Figure 4 8 shows a typ
20. e Pulse width knob is set on 20 default value This value is the preferred one and is suitable for a wide range of wirelines For long wireline over 2000m increasing the pulse width could help to stabilize the communication The reverse is true for short wireline less than 500m e Set the Uphole discriminators in the middle of the range for which the communication status stays valid e Increase the Baudrate to the desired value and observe that the communication status stays valid and the Bandwidth usage in Telemetry panel of the dashboard is below the critical level e When Uphole discriminators are properly set store the new configuration as default The tool should go through the initialisation sequence successfully the next time it is turned on Configur Tool Telemetry Uphole Link Downhole Link Baudrate 200000 Reset to default Discriminators 2 Pulse width Store as default 4 7 amp 4 5g Figure 4 4 Tool communication settings 4 3 Tool Communication with MATRIX The tool telemetry can be configured through the Telemetry panel of the Matrix dashboard By clicking on Settings the operator has access to the Configure ALT Telemetry dialog box Figure 3 5 providing various controls to adjust the telemetry settings and monitor its current status The Analysis View displays the current discriminator levels vertical yellow lines and a histogram of the up hole data signal The scales of the Analysis Vi
21. e voltage beginning with the first 25 ms window after injection is removed is added to the next average release voltage from 25 50 ms and so on for those 10 cycles The output Ma is presented for the SS 16 spacing The IPWave browser shows the same information for the LS 64 channel Calculation of Ma Chargeability The chargeability for the SS channel is calculated using the following relationship Formula 0 001 ch12 ch49 ch50 ch51 ch52 ch53 ch54 ch55 ch56 ch57 ch58 where ch12 is the release gate time e g 25 ms for a 250 ms inj rel setting Advanced Logic Technology Mount Sopris Instruments 22 4 Operating Procedure and ch49 ch58 are the normalized values for each gate which is the gate average voltage divided by the injection voltage Chargeability Ma in milliseconds is equal to the integrated area under the decay waveform in mv ms divided by the injection voltage 250 275 300 325 350 375 400 425 450 475 500 Figure 4 11 Release Decay Waveform Chargeability Ma calculation 4 5 4 MChCurve Browser By default the MchCurve Browser window displays the curves shown in Figure 4 11 SP SPR normal resistivity and the IP responses from 16 and 64 electrodes www alt lu www mountsopris com 4 Operating Procedure ff ASTEROPE MChCurve File Edit View Help al it my 23
22. ess should be applied to get true formation resistivity See appendix for references The SPR and normal resistivity measurements are made using a 50 ms long 16V square wave downhole current generator which can supply up to 500 mA of survey current The polarity of the current is alternated between and relative to armor to prevent polarization of the electrodes In the IP mode the QL40 ELOG IP uses the 16 and 64 inch electrodes as receivers and the current electrode as an IP charging source The probe measures the injection and relaxation voltages on both measure electrodes as a function of time This measurement is digitized and presented as 10 channels of time based data per depth interval for each spacing In addition a high resolution A D further breaks each channel into 10 more discrete samples providing a full wave presentation of the injection and relaxation decay A chargeability curve is then derived from the measurement Advanced Logic Technology Mount Sopris Instruments 6 3 QL40 ELOG IP assembly and set up 3 QL40 ELOG IP assembly and set up The QL40 ELOG IP sub is delivered with the following accessories gt Isolation bridle Figure 2 1 QL40 Isolation bridle gt Isolated bottom plug www alt lu www mountsopris com 3 QL40 ELOG IP assembly and set up Figure 3 2 isolated Bottom Plug gt Calibration box with a set of cables and clamps The calibration box is used to perform a
23. ew can be adjusted using the Vertical Scale and Horizontal Scale knobs and the linear logarithmic scale buttons The status of the configuration should be flagged as Valid indicated by the LED being green In any other case LED red the telemetry should be adjusted we assume a pulse signal Advanced Logic Technology Mount Sopris Instruments 16 4 Operating Procedure is displayed in the analysis view Click on the Advanced button to display additional controls to tune the telemetry The Automatic settings option is the preferred mode and should allow the telemetry to be configured for a wide range of wirelines without operator input For wirelines with a more limited bandwidth the operator might need to turn off the automatic mode and adjust the telemetry settings manually In general the gain setting should not be left in the automatic mode once a valid setting has been determined Uncheck the box to disable automatic gain For each wireline configuration the discriminators vertical yellow lines for the positive and negative pulses must be adjusted in order to obtain a valid communication status see Figure 4 5 for an example of a suitable discriminator position There is also the option to alter the baudrate in order to optimize the logging speed The input gain can be increased long wirelines or decreased short wirelines in order to set up the discriminator levels correctly Configur ALT Telemetry Analysis Info Vertical
24. ical example of the numerical values displayed in the MChNum browser ASTEROPE MChNum E R VSP SPR NB NIB N32 WEED Ohm Ned irg Ma m 268 51 203 3 ASTEROPE Figure 4 8 MCHNum Browser Window VSP Spontaneous Potential mV SPR Single Point Resistance Ohm N8 8 normal resistivity Ohm m Advanced Logic Technology Mount Sopris Instruments 20 4 Operating Procedure N16 16 normal resistivity Ohm m N32 32 normal resistivity Ohm m N64 o 64 normal resistivity Ohm m Apparent Chargeability ms The other parameters listed in Table 1 can be displayed in real time if required Right click on MChNum browser and click on Display options from the menu Select in the Display options properties dialog box and add the additional channels to display It is possible to change the format of decimal digits displayed for a channel Select the channel and click on Settings to configure the number of digits after the period Propri t s de Display options Status Leds Numerical displays Channels Name Producer Producer Time Tool IP SYSTEMST Tool IP ELOG Temperature ToolIP SYSTEMST MChProc Tool IP ELOG MChProc Tool IP ELOG MChProc Tool IP ELOG MChProc Tool IP ELOG MChProc Tool IP ELOG MChProc Tool IP ELOG Tool IP IPLIN H Display Telemetry status Figure 4 9 Display options properties 4
25. ime and turn it On 5 Verify the telemetry status in the Telemetry Panel The LED must be green and status valid 6 Right click on MChNum browser 7 From the menu uncheck Use calibration and click on Calibration Settings 8 For each resistivity channel SPR N8 N16 N32 and N64 follow the steps below gt From the Calibration Settings dialog box select the calibration page of the resistivity channel to calibrate Calibration Settings First Faint Second Point Reference 1 oy Reference f mite Value 296 338 cps Value 298 09998 cps Sample Sample Channel Calibration Factors WVSP my 5 0 567786 YSP cps 169 257 Compute Store Unit Calibration date Show all channels Options Export Close Figure 5 3 Example of calibration page gt Edit the first reference value say 100 ohm m gt Connect the measuring electrodes on the ELOG Calibrator for this first reference resistivity value 100 ohm m gt Click on SAMPLE to get the corresponding value in cps gt Edit the second reference value say 10 000 ohm m gt Connect the measuring electrodes on the ELOG Calibrator for this first reference resistivity value 10 000 ohm m gt Click on SAMPLE to get the corresponding value in cps gt Click on COMPUTE and then on STORE to save the calibration factors of the measured channel 9 The IP response can also be checked by connecting the injection SPR 16
26. ings in this case Matrix logging system The tool Firmware upgrade has Failed or has been aborted with status 4 Mo changes to the tool has been performed Telemetry errors while uploading the new Firmware to cool Ok Figure 6 6 Error message Advanced Logic Technology Mount Sopris Instruments 30 7 Troubleshooting 7 Troubleshooting The QL40ELOG IP probes require a proper current return to armor and a proper isolation for approximately 7 meters above the probe for correct operation The downhole tool current I must be a reasonable value to insure correct measurements are being made This value will fluctuate from 10 mA in very high resistivity rock to as much as 500 mA in very conductive rock If such values are not obtained during logging there may be a problem with the cable armor connections at the winch or logger NEVER DIS ASSEMBLE THE PROBE WITHOUT CONSULTING THE FACTORY FIRST Disassembly Instructions The QL40 ELOG IP Probe should never be disassembled unless service is necessary This is a very difficult probe to disassemble and is highly recommended that any service be performed by Mount Sopris ALT or a qualified technician Observation To Do Tool not listed in Tool panel Do you have a configuration file drop down list Has the configuration file been installed with the LoggerSettings application refer to LoggerSettings and LoggerSuite manuals for more information Tool configuration error
27. ireline sicisidicheseridesnettvcnadesticcathiadaasiguntendtecietapettiesbnateasigentiebnatetaigaleteals 33 1 General Information 1 1 General Information QL stands for Quick Link and describes the latest line of stackable logging tools This development is a joint venture of Mount Sopris Instruments MSI and Advanced Logic Technology ALT Innovative connections between tool elements subs allow users to build their own tool strings in the field The Tool Stack Factory a sophisticated extension of the acquisition software provides a convenient way to configure tool strings for operation Each sub has a Telemetry and Power supply element the TelePSU allowing them to operate individually without a separate telemetry sub As a result all QL subs can be operated as standalone probes or in combination with other subs The QL40 ELOG sub provides four normal resistivity measurements plus spontaneous potential SP and single point resistance SPR The QL40 ELOG can be operated as a stand alone probe with isolation bridle and bottom sub or can be stacked above or below another sub In general the isolation bridle must be located directly above the QL40 ELOG sub Isolation from armor is a critical requirement that cannot be overemphasized when running any resistivity probe Incorrect measurements will result if isolation is not adequate The QL40 ELOG sub can be upgraded to a QL40 ELOG IP sub upon request In this configuration the Q
28. jection period of the selected time with a negative current followed by a release period during which the second set of 10 measurements is made E g a complete measurement cycle at 250 ms injection release time will take 1 sec Shorter injection release times can be chosen for high conductivity formations If the chargeability of the rock is expected to be poor a longer injection release time can be chosen In order to see the curves in the preview window turn ON the Sampling in the Acquisition panel of the dashboard When in IP mode the Full wave preview window Error Reference source not found shows the potential difference measured between short spaced SS 16 blue curve and respectively long spaced LS 64 red curve electrodes and the reference during the two injection and release times Controls on the left of the preview window provide options to zoom in out fit preview to window scale the display linear logarithmic and enable disable the display of short spaced and long spaced curves Advanced Logic Technology Mount Sopris Instruments 18 4 Operating Procedure Configur IP Tool Parameters IF 100 IF 250 Resis L Store as default Vaid IMWEC TION IMJECTION 6 3 mim El Y on h a a ho a m m T m Figure 4 6 Mode and Injection Release time selection The Advanced Settings dialog box 7 can be displayed by clicking on the Advanced button Configur IP Advan
29. ough Ensure your PC has enough resources available Telemetry panel bandwidth Set the baudrate to highest value allowed by your wireline usage shows 100 configuration Overrun error message Reduce logging speed or increase vertical sample step Telemetry panel large Verify the telemetry settings for your wireline configuration number of errors see chapter 3 2 or 3 3 Check bandwidth usage and telemetry error status Advanced Logic Technology Mount Sopris Instruments 32 8 Appendix 8 Appendix 8 1 Parts list Item No Qty Part No Description 1 1 1673840 Silicone grease Molykote111 P 2 55459 DIN 1810B 40 42 Hook wrench w pin 3 6 AS215 V 75 Oring Viton shore 75 26 57 x 3 53 4 1 L0034 086 Grease Lubriplate 8 2 Bridle wiring configurations 8 2 1 QL40 IS4 bridle configuration for 4 conductor wireline WL4 WL2 WL3 Figure 8 1 Bridle bottom connection to tool Figure 8 2 Bridle top connection to cable head A B C 5 680R E 120R G H AUXI FISH voltage reference electrode AUX2 WL4 J WL Armour 4 WLCOMN WL3 L WLCOMM WL1 www alt lu www mountsopris com 8 Appendix 33 8 2 2 QL40 IS1 MSI and QL40 IS2 GO1 bridle configurations for single conductor wireline Figure 8 3 QL40 IS1 and IS2 bridle bottom connection to tool Figure 8 4 QL40 IS1 bridle top connection to cable head WLI Figure 8 5 QL40 IS2 bridle top connection to cable he
30. scale Horizontal scale Configuration Done Valid Input Gain Uphole Telemetry Downhole Telemetry Negative Diser Positive Diser Pulse width 3 V Automatic V Automatic V Automatic Figure 4 5 Matrix telemetry settings Once the telemetry is correctly set store the new settings as default The tool should go through the initialization sequence in Valid status the next time the power is turned on www alt lu www mountsopris com 4 Operating Procedure 17 4 4 Configuring Tool Parameters The Configure IP Tool Parameters dialog box can be opened by clicking on the Settings Commands button in the Tool panel of the dashboard The QL 40 ELOG IP tool can be operated in two modes by turning the knob control on the Mode section Error Reference source not found gt The Resis Only mode records the 8 16 32 64 normal resistivity SP and SPR gt The IP 100 250 500 modes record both the normal resistivity SP SPR and the IP responses on the 16 and 64 measure electrodes For IP measurements the downhole current generator supplies a 16VDC square wave pulse at up to 500 mA to each electrode The user can select from three different injection release times 100ms 250ms and 500ms Each measurement cycle consists of an Injection phase of the selected time with a positive current followed by a release period of the same length during which the first set of 10 measurements is made a second in
31. y available special ones can be made on request To assemble and disassemble the subs the C spanner delivered with the tool must be used Figure 3 1 It is recommended that before each assembly the integrity of the O rings AS216 Viton shore 75 is verified Prime the O rings with the silicon grease that was supplied with the subs www alt lu www mountsopris com 3 QL40 ELOG IP assembly and set up 11 C spanner Figure 3 6 C spanner and O rings of QL connection The following example of a QL40 ABI QL40 GAM and QL40 GO4 Figure 3 2 describes how to replace the QL40 ABI with a QL40 Plug in order to run the QL40 GAM sub stand alone QL40 604___ rc tool top QL40 GAM QL40 ABI Figure 3 7 Tool stack example To remove the QL40 ABI bottom sub attach the C spanner to the thread ring as shown in Figure 3 3 unscrew the threaded ring anticlockwise about the tool axis when looking towards the bottom of the tool and remove the QL40 ABI bottom sub Advanced Logic Technology Mount Sopris Instruments 12 3 QL40 ELOG IP assembly and set up Thread ring Figure 3 8 Unscrewing the thread ring and removing the bottom sub After checking the O ring integrity align and slip the QL40 Plug over the exposed QL connector Figure 3 4 attach the C spanner and screw the threaded ring until the plug draws up tight to the ring Bottom plug Figure 3 9 Attaching the QL40 Plug www alt lu www mountsopris com 3 QL
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