Casing thiab tubing yog dab tsi?
Casing thiab tubing yog cov khoom tseem ceeb uas siv rau hauv kev drilling thiab tsim cov roj thiab roj qhov dej. Lawv ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov txiaj ntsig ntawm hydrocarbons los ntawm qhov tob hauv qab lub ntiaj teb nto. Kab lus no yog tsim los muab kev nkag siab zoo ntawm cov casing thiab tubing, lawv cov haujlwm, hom, thiab qhov tseem ceeb hauv kev lag luam roj thiab roj.
Casing: Tiv thaiv lub Wellbore
Casing yog hais txog cov qauv siv los ua kab lub qhov dej thiab txhawb cov phab ntsa ntawm qhov dej. Nws ua haujlwm rau ob lub luag haujlwm tseem ceeb: tiv thaiv kev tawg ntawm qhov dej thiab cais tawm ntau yam tsim los tiv thaiv kev sib kis. Casing yog ntsia thaum lub sij hawm drilling txheej txheem kom ntxiv dag zog rau lub qhov dej thiab xyuas kom meej nws cov qauv kev ncaj ncees.
Hom Casing
Casing tuaj nyob rau hauv ntau qhov ntau thiab tsawg thiab cov ntaub ntawv, nyob ntawm seb qhov dej yuav tsum tau ua. Cov ntaub ntawv casing feem ntau muaj xws li steel, composite, thiab cov ntaub ntawv tsis yog xim hlau hauv qee kis. Hom casing muaj xws li:
1. Conductor Casing: Qhov no yog thawj lub casing yuav tsum tau nruab thiab tiv thaiv qhov qis tshaj formations. Nws kuj muab kev ruaj ntseg thaum lub sijhawm ua haujlwm drilling.
2. Nto Casing: Cov casing no yog ntsia tom ntej thiab txuas mus rau sab saum toj ntawm lub qhov dej. Nws cais thaj chaw dej ntiav thiab tiv thaiv cov dej tsis huv los ntawm kev sib kis.
3. Intermediate Casing: Cov casing nruab nrab yog ntsia los tiv thaiv thiab cais qee qhov kev tsim tawm thaum lub sijhawm drilling, txo qhov kev pheej hmoo ntawm qhov tsis zoo.
4. Production Casing: Qhov no yog qhov kawg casing ntsia rau hauv lub qhov dej. Nws ua kom lub qhov dej ruaj khov, txhawb nqa qhov hnyav ntawm txoj hlua ntau lawm, thiab tiv thaiv hydrocarbon to.
Txhua hom casing muaj nws cov yam ntxwv tshwj xeeb thiab raug xaiv raws li cov yam ntxwv xws li qhov tob tob, tsim cov yam ntxwv, thiab cov kev cia siab zoo.
Txheej txheem installation ntawm casing
Cov txheej txheem ntawm kev txhim kho casing feem ntau muaj ob peb kauj ruam. Ua ntej, ib lub qhov yog drilled mus rau ib tug tej yam tob, tom qab uas tus neeg xyuas pib casing yog muab tso rau. Cov kauj ruam tom ntej no suav nrog kev sib sib zog nqus tob thiab txhim kho qhov chaw, nruab nrab, thiab tsim cov casings ua ntu zus. Cement yog tom qab ntawd tso rau hauv qhov chaw annular ntawm lub qhov dej thiab lub casing los muab kev txhawb nqa ntxiv thiab kev sib cais.
Casing Accessories
Ntau yam khoom siv tau siv ua ke nrog cov casing los txhim kho kev ua tau zoo thiab kev ncaj ncees. Qee yam khoom siv casing muaj xws li:
1. Cov khoom siv hauv nruab nrab: Cov cuab yeej no xyuas kom muaj qhov chaw tso cai thiab tiv thaiv kom tsis txhob kov cov phab ntsa hauv qhov dej. Centralizers pab txhim kho kev tso cement thiab txo qhov kev pheej hmoo ntawm cement channeling.
2. Casing Heads: Casing heads muab ib qho kev sib txuas rau cov hlua casing nto thiab cov khoom siv tiv thaiv blowout (BOP).
3. Casing Hangers: Cov khoom no txhawb nqa qhov hnyav ntawm txoj hlua casing thiab muab lub foob ntawm lub casing thiab lub taub hau.
4. Float Equipment: Cov khoom siv ntab yog siv thaum lub sijhawm ua haujlwm cementing los tiv thaiv kev rov qab los thiab xyuas kom zoo ntawm cov cement.
Cov khoom siv no yog qhov tseem ceeb hauv kev tswj xyuas qhov zoo ntawm kev ncaj ncees thiab ua kom muaj kev ua haujlwm zoo.
Tubing: Yooj yim rau roj thiab roj ntws
Thaum casing txhawb nqa cov qauv zoo, tubing yog siv los pab txhawb kev khiav ntawm cov roj, roj, los yog sib tov ntawm ob qho tib si, los ntawm lub reservoir mus rau saum npoo. Tubing raug tshem tawm hauv txoj hlua casing thiab txuas nrog rau hauv qab ntawm qhov dej. Nws ua hauj lwm raws li ib tug conduit rau hydrocarbons mus txog rau saum npoo.
Hom Tubing
Zoo ib yam li casing, tubing tuaj nyob rau hauv ntau qhov ntau thiab tsawg thiab cov ntaub ntawv. Qhov kev xaiv ntawm tubing nyob ntawm qhov chaw zoo, nrog rau qhov kub thiab txias, siab, thiab cov khoom ntawm cov kua ua kua. Cov khoom siv tubing muaj xws li carbon steel thiab corrosion-resistant alloys xws li stainless hlau los yog nickel alloy. Ob hom tubing tseem ceeb yog:
1. Tubing ntau lawm: Hom tubing no yog siv los xa cov hydrocarbons los ntawm lub reservoir mus rau saum npoo. Nws yuav tsum tiv taus lub siab, kub, thiab corrosiveness ntawm cov kua ua kua.
2. Txhaj Tubing: Cov raj txhaj tshuaj yog siv los xa cov kua dej rau hauv qhov dej. Nws yog ua hauj lwm hauv cov txheej txheem xws li dej los yog roj txhaj tshuaj los txhim kho cov roj rov qab.
Txhua hom tubing raug xaiv raws li cov xwm txheej tshwj xeeb thiab kev tsim khoom.
Tubing Installation txheej txheem
Tubing feem ntau yog ntsia tom qab ua tiav ntawm lub casing. Nws yog khiav mus rau hauv lub qhov dej ntawm ib txoj hlua tubing thiab tshem tawm los ntawm lub qhov dej uas siv tubing hangers. Tom qab kev teeb tsa, qhov chaw annular ntawm cov tubing thiab cov casing tuaj yeem sau nrog cov khoom siv thib ob, lub npe hu ua lub ntim khoom, muab kev sib cais lossis kev txhawb nqa ntxiv.
Qhov tseem ceeb ntawm Casing thiab Tubing hauv Kev Lag Luam Roj thiab Roj
Casing thiab tubing yog cov khoom tseem ceeb hauv kev lag luam roj thiab roj rau ntau yam laj thawj:
1. Wellbore Stability: Casing muab cov qauv kev txhawb nqa rau lub qhov dej, tiv thaiv nws lub cev qhuav dej thaum lub sijhawm ua haujlwm drilling thiab ntau lawm. Nws ua kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm thiab cov khoom siv.
2. Kev rho tawm tsim tawm: Casing cais cov formations sib txawv nkag mus thaum lub sij hawm drilling, tiv thaiv kev sib kis ntawm ntau cov txheej txheej geological thiab ua kom muaj kev ncaj ncees ntawm txhua qhov tsim.
3. Kev Tswj Xyuas Zoo: Casing thiab tubing yog ib qho tseem ceeb rau kev tswj xyuas kom zoo. Lawv pab tiv thaiv kev tawm tsam thiab tsis tswj xyuas kev tso tawm hydrocarbons rau hauv ib puag ncig.
4. Reservoir Protection: Kev tsim cov casing thiab tubing kom zoo pab tiv thaiv lub reservoir los ntawm kev puas tsuaj, khaws cia nws cov khoom tsim tau thiab ua kom cov hydrocarbon rov zoo.
5. Kev xa tawm cov kua dej: Tubing tso cai rau kev khiav dej num ntawm cov dej hauv lub reservoir mus rau saum npoo, ua kom yooj yim rau kev lag luam roj thiab roj.
Xaus
Casing thiab tubing yog cov khoom tseem ceeb hauv kev drilling thiab tsim cov roj thiab roj qhov dej. Casing ua kom muaj kev ruaj ntseg zoo, tiv thaiv kev sib kis ntawm kev tsim, thiab txhawb nqa cov qauv zoo. Tubing, ntawm qhov tod tes, pab txhawb kev ntws ntawm hydrocarbons los ntawm lub reservoir mus rau saum npoo. Kev nkag siab txog cov haujlwm, hom, thiab cov txheej txheem kev teeb tsa ntawm casing thiab tubing yog qhov tseem ceeb rau kev ua haujlwm zoo thiab nyab xeeb ntawm cov roj thiab roj.