Dab tsi yog Qhov Qhov Openers rau Drilling?
Qhov qhib qhov qhib yog siv los ua kom qhov loj me ntawm qhov zoo thiab muaj ob pawg dav ntawm lub qhov qhib: qhov taub qhov qhib qhov qhib, thiab hauv qab-reamers.
Lub qhov taub qhov qhib qhov qhib feem ntau yog ua los ntawm peb "cutters" teem nyob ib ncig ntawm lub mandrel, thiab mounted ntawm "saddles" los ntawm ruaj khov pins. Cutters tej zaum yuav milled hniav, PDC, los yog TC inserts, uas yuav txawv nyob ntawm seb qhov tsim yuav raug txiav.
Hauv qab-reamers, ntawm qhov tod tes, yog hydraulically actuated lub qhov qhib uas muaj ob lossis peb caj npab. Lawv feem ntau yog siv thaum lub qhov yuav tsum tau qhib rau ib txoj kab uas hla loj dua lub casing uas twb tau teem tseg. Ob qho tib si ntawm cov ntaub ntawv no feem ntau muaj cov kab dej ntws, lossis "dav hlau", uas tau npaj kom cov cutters lubricated thiab pab tshem tawm cov txiav. Cov no yuav tsum tau teeb tsa kom zoo ua ntej siv, kom ntseeg tau tias cov av nkos sib npaug los ntawm thiab tawm ntawm lub qhov qhib.
Cov qhov uas tau raug drilled yav dhau los tuaj yeem rov qhib tau siv lub qhov taub qhov qhib qhov qhib. Hauv qhov no, "bullnose" yuav khiav hauv qab nws. Txwv tsis pub, lub qhov taub qhov qhib qhov qhib tuaj yeem siv los laum lub qhov tshiab, feem ntau nrog rau kev sib dhos drilling. Lub rooj sib txoos no feem ntau yog tsim los ntawm kev xyaum me me, lub tsho luv luv, lub qhov qhib, thiab lwm yam. Ib txoj hauv kev siv txoj kev drilling no yog siv lub qhov qhib lub qhov, nrog rau txhua qhov loj zuj zus nyob rau hauv txoj kab uas hla. Qhov no feem ntau siv thaum "spudding" lub qhov dej tshiab txhawm rau txhawm rau teeb tsa tus neeg xyuas pib, lossis qhov chaw ua haujlwm. Nws kuj tseem tuaj yeem khiav hauv qab ntawm lub cav av nkos- ib qho xwm txheej xav tau qhov no yuav yog qhov uas tsis muaj qhov chaw tsav tsheb.
Qhov qhib qhov rooj yuav siv tau rau drilling qhov loj txoj kab uas hla nyob rau hauv thiaj li yuav teem lub platform ob txhais ceg, ua ntej grouting yuav siv qhov chaw. Tej zaum lawv kuj yuav raug siv los so lub rooj zaum tseem ceeb, lossis txhob txwm tshaj tawm lub qhov loj yog tias nws tsim nyog ntxiv qee cov cement ntxiv tom qab ib txoj hlua casing.
Feem ntau cov rigs muaj cov kab nruab nrab ntawm qhov qhib qhov qhib raws li tus qauv. Txawm li cas los xij, lawv tsis yog ib txwm siv nrog tib qib kev saib xyuas thiab kev ua kom zoo li lwm cov khoom tshwj xeeb ntawm cov khoom siv drilling. Lub xub pwg nyom thiab kev sib txuas yuav tsum tau soj ntsuam ib ntus, thiab tib yam mus rau welds. Lawv tsuas yog ib qho tseem ceeb raws li qhov tseem ceeb ntawm kev ua kom txoj hlua xyaum ua kom zoo.
Roller reamers yog ib feem tseem ceeb ntawm kev ua kom muaj kev ncaj ncees ntawm koj qhov tho qhov thiab cov cuab yeej muaj txiaj ntsig hauv kev ua tiav ntawm txhua qhov ntawm koj txoj haujlwm.
Vigor zoo siab los pab koj nrhiav qhov tsim nyog qhov ntau thiab tsawg thiab kev sib txuas kom tiav koj txoj haujlwm yooj yim. Hu rau peb pab neeg hnub no kom tau txais kev pab koj xav tau.
