Laum dab tshosyog cov cuab yeej tseem ceeb 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.
1. Kev txhais ntawmdrillcollars
Ib lub dab tshos tho yog ib qho hnyav, tuab-walled steel raj nrog threaded kev sib txuas txiav ntawm ob qho kawg uas peb siv nyob rau hauv oilfield drilling rigs. Lawv yog tsim los tiv thaiv downhole tej yam kev mob thaum nyob rau hauv compression thiab nro. Thaum tsim lub qhov drilling hauv qab qhov sib dhos (BHA), cov kws ua haujlwm drilling tso cov hlua tho hauv qab cov kav dej laum los yog cov kav dej hnyav tshaj qhov Laum Ntsis li laum dab tshos yog qhov tseem ceeb ntawm Drilling BHA. Txhawm rau xaiv qhov zoo laum dab tshos, koj yuav tsum muaj tag nrho cov ntaub ntawv hais txog Drill dab tshos Nyhav, Loj, Specs, Txhais, ntev, thiab hom.
2. Kev tsim khoomprocess
Tsis tas li ntawd, lawv tau tsim los ntawm chrome-molybdenum alloy 4140 (4140 yog ib txoj cai uas qhia txog 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 los ntawm 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 nyob rau sab nraud kom zoo dua drilling av nkos hom ntws tswj.
3. Drillcollarsftsis ua haujlwms
Qee qhov haujlwm ntawm cov dab tshos yog raws li hauv qab no:
Muab qhov hnyav ntawm me ntsis (WOB) & nce me ntsis kev ua haujlwm.
Txo cov teeb meem kev ruaj ntseg me ntsis los ntawm kev sib tsoo txoj hlua vibrations, wobbling, thiab dhia.
Txo txo cov teeb meem kev tswj xyuas los ntawm kev muab qhov nruj rau BHA los pab tho qhov ncaj los yog ntsug.
Khaws cov hlua tho hauv qhov nro kom txo qis kev ntxhov siab thiab xyaum txoj hlua tsis ua haujlwm vim qaug zog.
4. Drillingcollartypes
(1) hom slick
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.
(2) kauv laum dab tshos
Thaum drilling los ntawm tej yam formations, lub loj txoj kab uas hla D / Cs tuaj yeem daig (pipe 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.
(3) square hom
Cov no yog laum dab tshos nrog ib qho square seem thiab kab pheeb ces kaum 1.6 hli (1/16 ″) tsawg dua qhov xyaum me me, nrog cov khoom siv tawv tawv siv rau cov ces kaum. Peb feem ntau khiav hom no nyob rau hauv txoj hlua thaum drilling crooked qhov formations. Yog vim li cas yog muab qhov siab tshaj plaws stabilization thiab tiv thaiv kev sib txawv ntawm qhov uas twb muaj lawm ntawm lub qhov. Kev siv square hom yog, txawm li cas los xij, tsis yog qhov chaw.
(4) hom tsis sib nqus
Feem ntau hom laum dab tshos yog lub tsho uas tsis muaj hlau nplaum. Nws yog tsim los ntawm cov hlau alloy nrog ib txheej txheej machined rau ib qho kev 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 threads thiab lub xub pwg nyom tshaj li ib txwm xyaum dab tshos. 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 tshosyog tsim nyob rau hauv nruj raws li API Spec. 7-1 thiab NS-1 cov qauv. Vigor tsim ntau hom tho dab tshos, nrog rau cov hlua tho dab tshos thiab cov dab tshos tsis sib nqus. Vigor ib txwm ua raws li cov neeg siv khoom-centric kev pabcuam lub tswv yim. Kev xaiv ua haujlwm nrog peb yog xaiv tus khub zoo tshaj plaws. Yog tias koj txaus siab rau peb, thov tsis txhob yig tiv tauj peb.
Yog xav paub ntxiv, koj tuaj yeem sau rau peb lub mailbox:
info@vigorpetroleum.com(Erica)
mail@vigorpetroleum.com(Joppa)
Cov ntaub ntawv Source:
https://onepetro.org/SPEDRM/proceedings-abstract/63DRM/63DRM/SPE-501-MS/160568
https://onepetro.org/JPT/article-abstract/36/04/637/73183/Drill-Collar-Length-is-a-Major-Factor-in-Vibration?redirectedFrom=fulltext
