Variable Density Log (VDL)

CovA-One Oil Variable Density Log (VDL)yog ib qho tshwj xeeb acoustic logging kev daws teeb meem tsim los xa cov ncauj lus kom ntxaws, waveform-raws li kev nkag siab rau cov cement daim ntawv cog lus zoo tom qab casing hauv cov roj thiab cov qhov dej. Raws li ib qho tseem ceeb ntawm cov cement kev soj ntsuam kev ua haujlwm, VDL ua tiav cov ntawv cog lus ntawm cov cement amplitude thiab muab cov engineers nrog ntau qhov zoo thiab pom kev sawv cev ntawm cement kev ncaj ncees rau kev sib cais ntawm zonal thiab kev npaj kev ncaj ncees.

Dab tsi yog Variable Density Log (VDL)?

Lub Variable Density Log (VDL) siv cov kev ntsuas sonic uas tau txais tom qab kev ua haujlwm cementing thawj zaug kom pom cov lus teb tag nrho acoustic waveform uas tau sau tseg los ntawm cov cuab yeej downhole sonic. Instead of focusing solely on amplitude or transit time, the VDL displays acoustic waveforms as a density plot (shades of gray or color scale) over depth - effectively creating a "waveform image" of bond conditions behind casing.

Qhov no waveform-raws li kev pom pom pab txhais lus pom cov yam ntxwv xws li:

◆ Micro{0}}annulilos yog nyias nyias ntawm casing thiab cement.

◆ Channelinglos yog voids nyob rau hauv lub cement sheath.

◆ Cement -mus rau - tsim coupling zoo

Cov teebmeem ntawm cov pa roj, kua dej, lossis kev tsim cov xwm txheej ntawm cov lus teb acoustic.

Ua kom muaj kev sib raug zoo ntawm cov cement sib txuas ntawm casing, cement, thiab tsim yog lub hauv paus ntawm kev ncaj ncees. Tsis zoo cement bond zoo tuaj yeem ua rau:

◆ Kev sib txuas lus hauv cheeb tsam thiab tsis xav tau kev tsiv teb tsaws chaw

◆ Kev cuam tshuam zoo cuam tshuam thaum tsim khoom lossis txhaj tshuaj

◆ Kev tswj tsis tau- ua raws thiab ua rau muaj kev pheej hmoo ua haujlwm ntxiv

Thaum ib txwm Cement Bond Logs (CBL) muab cov ntaub ntawv ntau npaum li cas, VDL muab cov duab pom zoo rau cov qauv acoustic waveform, pab cov neeg txhais lus raws caij nyoog paub txog cov teeb meem kev sib txuas lus me me uas yuav tsis pom tseeb los ntawm amplitude ib leeg.

Lub Variable Density Log ua lub luag haujlwm tseem ceeb hauv kev txhawb nqa thoob plaws ntau theem ntawm kev ua haujlwm zoo:

◆ Tom qab-Kev ntsuam xyuas Cementing

Muab cov ncauj lus kom ntxaws sonic ntsuam xyuas ntawm daim ntawv cog lus zoo tam sim tom qab tso cement.

◆ Pre-Perforation & Ua tiav Planning

Xyuas kom muaj zog cement bonds ua ntej perforating zones rau ntau lawm stimulation.

◆ Kev Tshawb Fawb Txog Kev Ua Haujlwm & Kev Ua Haujlwm Zoo

Siv rau hauv kev npaj kho mob thaum daim ntawv cog lus zoo xav tau rov qab- kev ntsuam xyuas thaum muaj kev cuam tshuam zoo.

◆ Txhim kho qhov kev pom zoo tshaj qhov yooj yim amplitude ntsuas.

◆ Kev pom kev sawv cev pab txhawb kev txhais lus zoo.

◆ Tshawb xyuas qhov tsis xws luag xws li micro-annuli thiab channeling.

◆ Ua tiav cov ntaub ntawv CBL tus qauv los tsim kom muaj cov ntaub ntawv nplua nuj dua rau kev txiav txim siab- ua.

Los ntawm kev ua raws li Intuitive explanatory daim duab nrog paub acoustic physics thiab downhole tej yam kev mob, VDL txhim khu kev txhais lus zoo thaum leveraging tsim sonic logging cov hauv paus ntsiab lus.

CovVariable Density Log (VDL)yog ib qho kev tshawb fawb hauv av thiab cov cuab yeej siv tau zoo hauv cov txheej txheem ntawm kev soj ntsuam cement. Nws muab cov neeg ua haujlwm thiab cov tuam txhab pabcuam nrog Intuitive explanatory diagram insights that enrich and qualify the traditional cement bond metrics. Nrog rau kev ua tib zoo xa mus thiab kev txhais cov kws tshaj lij, VDL pab xyuas kom meej tias cov haujlwm cement ua tau raws li kev xav tau ntawm engineering thiab cov kev cai tswj hwm- thaum kawg tiv thaiv kev ncaj ncees thiab ua kom zoo tshaj qhov kev tsim khoom.

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