Drilling dab tshos yog ib qho cuab yeej tseem ceeb uas siv hauv cov roj thiab roj rigs rau kev ua haujlwm drilling. Nws muaj ntau txoj haujlwm, suav nrog kev muab qhov hnyav ntawm qhov drilling me ntsis rau kev ua haujlwm zoo thiab ruaj khov thaum ua haujlwm. Kev nkag siab txog qhov tseem ceeb ntawm kev xyaum dab tshos thiab lawv ua haujlwm li cas yog qhov tseem ceeb rau kev ua haujlwm zoo drilling. Nyob rau hauv tsab xov xwm no, peb yuav tshawb txog qhov tseem ceeb ntawm kev xyaum dab tshos thiab lawv lub luag haujlwm hauv cov txheej txheem drilling.
Laum dab tshos yog tsim los ntawm chrome-molybdenum alloy 4140 (4140 yog ib txoj cai uas qhia cov tshuaj pleev xim ntawm cov hlau). Tsis tas li ntawd, lawv tau kho cua sov thiab quenched dhau lawv qhov ntev, nrog rau Brinell hardness ntau ntawm 255 txog 341 kom tau txais cov khoom siv kho tshuab raws li API Spec 7-1. Lawv bore yog raug machined los xyuas kom meej du, balanced rotation. Cov dab tshos yog tsim nyob rau hauv ntau qhov ntau thiab tsawg (ODs) thiab muaj nyob rau hauv qhov ntev 2: 9.15 - 9.76 m (30 - 32 ft); thiab 3: 12.8 - 13.27 m (42 ft -43 ft).
Laum dab tshos tseem tuaj yeem tsim tau siv cov hlau nplaum hlau los yog kauv dab tshos, nrog rau kev sib txuas ntawm cov xov sib txuas, qhov hnyav nce, thiab muab kauv grooves rau sab nraud kom zoo dua drilling av nkos hom ntws tswj.
Peb hom drilling dab tshos
Slick Hom
Hom slick yog qhov ntau tshaj plaws uas tau siv txij thaum pib. Nws tsis muaj qhov tshwj xeeb. Nws txoj haujlwm tseem ceeb yog ntxiv qhov hnyav rau me ntsis thiab ua kom muaj kev ruaj ntseg thaum drilling.
Spiral Drill dab tshos
Thaum drilling los ntawm tej yam formations, lub loj txoj kab uas hla D / Cs yuav daig (Piv txwv sticking teeb meem) tiv thaiv lub borehole (differential sticking). Qhov no yuav tshwm sim thaum tsim muaj qhov ntxeem tau, siv qhov sib npaug loj ntawm cov av nkos, thiab qhov dej deviates. Ib txoj hauv kev tiv thaiv qhov teeb meem no yog txo qhov chaw sib cuag ntawm dab tshos tiv thaiv lub qhov dej. Peb tuaj yeem txiav cov kauv grooves rau hauv lub dab tshos kom txo nws qhov chaw.
Peb nquag siv hom no. Lawv muaj kauv flats, los yog ntiav ntiav, uas yog machined nyob rau hauv lawv nto raws qhov tseem ceeb ntawm lawv ntev. Qhov no txo lawv qhov hnyav rau ib chav tsev ntev li ntawm 4%. Txo cov phab ntsa tiv thaiv cheeb tsam ntawm DC thiab lub qhov phab ntsa ua kom txo tau qhov sib txawv ntawm phab ntsa nplaum.
Hom Tsis-Magnetic
Hom DC feem ntau yog qhov tsis sib nqus laum dab tshos. Nws yog tsim los ntawm cov hlau alloy nrog ib txheej txheej machined rau ib tug smoothness thiab lub elevator recess vojvoog uas ua tau raws li qhov yuav tsum tau muaj. Peb yuav tsum them nyiaj tshwj xeeb thaum tsim NMDCs. Qhov no yog vim hais tias cov khoom muaj kev cuam tshuam rau lub galling ntawm cov xov thiab lub xub pwg nyom dua li ib txwm DCs. Lawv tsom mus cais cov kev taw qhia Kev Tshawb Fawb Cov Cuab Yeej los ntawm kev sib nqus sib nqus vim yog cov hlua Drilling.
Vigor's laum dab tshos yog tsim nyob rau hauv nruj raws li API Spec. Yog tias koj txaus siab rau cov cuab yeej downhole drilling lossis lwm yam khoom siv rau kev lag luam roj thiab roj, thov tsis txhob yig tiv tauj peb.
