Cov cav ntoo muaj txiaj ntsig zoo- kev tawm tsam cav ntoo

- Nov 05, 2019-

Resistivity logging yog ib txoj kev ntawm kev txiav zoo uas ua haujlwm los ntawm cov yam ntxwv ntawm lub pob zeb lossis cov av hauv qhov nqus ntawm qhov ntsuas nws cov hluav taws xob resistivity. Resistivity yog ib qho khoom siv tseem ceeb uas sawv cev rau cov khoom siv sib zog npaum li cas cuam tshuam qhov ntws ntawm hluav taws xob hluav taws xob. Hauv cov cav no, kev tiv thaiv hluav taws xob yog ntsuas siv 4 qhov hluav taws xob soj ntsuam kom tshem tawm qhov tsis kam ntawm cov khoom sib chwv. Lub cav yuav tsum khiav hauv cov qhov muaj cov av hluav taws xob lossis dej.


Kev tawm tsam qee zaus yog siv rau hauv kev tshawb nrhiav cov ntxhia pob zeb (tshwj xeeb yog kev tshawb rau cov hlau thiab cov poov tshuaj) thiab cov dej hauv qhov tshij, tab sis feem ntau rau kev tsim kev ntsuam xyuas hauv cov roj- thiab roj-qhov drilling. Cov khoom siv pob zeb feem ntau yog qhov ua rau insulators, thaum lawv cov dej uas nyob hauv yog cov hlau nplaum. Cov kua roj hauv hydrocarbon yog kev zam, vim tias lawv yuav luag txhua qhov tawm tsam. Thaum ib qho tsim tsim muaj qhov ntxeem thiab muaj cov dej qab ntsev, lub zog tag nrho yuav tsawg. Thaum qhov tsim muaj cov pa roj carbon hlau, lossis muaj cov dej txeem tsis tshua muaj zog, nws qhov kev tawm tsam yuav raug siab. Lub siab resistivity qhov tseem ceeb yuav qhia tau tias muaj hydrocarbon bearing tsim.


Feem ntau thaum lub sijhawm drilling, cov kua dej drilling ua rau txoj kev tsim, kev hloov pauv ntawm qhov thev naus laus zis yog ntsuas los ntawm cov cuab yeej hauv thaj chaw invaded. Vim li no, muaj ntau yam khoom siv tiv nrog ntau qhov kev tshawb nrhiav qhov ntev yog siv los ntsuas qhov kev tsim kho kev tawm tsam. Yog hais tias dej raws av nkos siv thiab roj tau hloov chaw, "sib sib zog nqus" lub cav tsis kam (lossis cov "thaj tsam nkauj xwb") yuav ua rau pom qis dua kev coj ua zoo dua li thaj chaw invaded. Yog tias siv cov av raws roj av thiab siv dej los hloov chaw, cov cav sib sib zog nqus yuav ua rau muaj kev ua tau zoo dua li thaj chaw invaded. Qhov no tsis tsuas yog qhia txog seb cov kua nruab nrog cev li cas tam sim no, tab sis kuj, tsawg kawg yog qhov muaj txiaj ntsig zoo, txawm tias qhov tsim yog puas tsuaj lossis tsis.