Hnub no yog ib qho "yuav tsis raug / khiav tsis raug / rov ua haujlwm tom qab" lub ntsiab lus ntawm qhov chaw:Casingvs. Slotted Casing Extension vs. Perforated Pipe-Dab tsi yog qhov txawv?
Tej zaum koj tau hnov cov no ua ntej:
- Nws yog tag nrho cov yeeb nkab nrog qhib, txoj cai?
- Cov qhov thiab qhov ob leeg cia cov kua dej hauv - ib leeg ua haujlwm.
- Cia li khiav ib lub slotted casing extension muaj thiab txuag lub sij hawm tom qab.
Lawv suab tsim nyog, tab sis qhov no yog qhov tseeb qhov kev ua yuam kev kim pib. Peb cov no yuav zoo sib xws, tab sis lawv tau tsim rau cov haujlwm sib txawv. Kho lawv raws li cov khoom qub thiab koj tuaj yeem xaus nrog xuab zeb, ntsaws, khiav- hauv cov teeb meem, lossis kev yuav khoom npau suav phem- cov ntaub ntawv thiab kev lees paub tsis sib xws li qhov project xav tau.
Cia peb paub meej tias txhua tus yog rau dab tsi
- Casing: lub "caj npab" ntawm lub qhov dej. Kev them nyiaj yug tus qauv, siab ncaj ncees, zonal cais, thiab lub hauv paus cementing. Nws tsis yog tsim los ua ib qho khoom siv nkag.
- Slotted Casing Extension (Slotted Liner / Extension): ib txoj hauv kev nkag nrog txwv cov xuab zeb tuav. Cov kev hloov pauv tseem ceeb yog qhov dav dav thiab qhov qauv ntawm qhov.
- Perforated Yeeb Nkab (Perforated Liner): ib txoj hauv kev nkag los ntawm qhov. Cov hloov pauv tseem ceeb yog lub qhov taub, lub qhov pitch / qauv, thiab qhov chaw qhib; xuab zeb tswj feem ntau yog nyob ntawm kev ua tiav tag nrho, tsis yog cov yeeb nkab perforated ib leeg.
Ib lub rooj muab cov lus xaus: Yuav Ua Li Cas Txhua Tus Kho
| Yam khoom | Casing | Slotted Casing Extension (Slotted Liner / Extension) | Perforated yeeb nkab (Perforated Liner) |
|---|---|---|---|
| Lub luag haujlwm tseem ceeb | Wellbore structural kev txhawb nqa, zonal cais, siab ntim, cementing hauv paus | Muab cov dej nkag thaum siv qhov loj me rau "tuav rov qab" qee cov xuab zeb (txheej xuab zeb tswj) | Muab kev nkag los ntawm qhov; tuaj yeem ua kom yooj yim ua tiav lossis ua kom muaj kev nkag mus hauv zos |
| Qhov chaw nyob | Tag nrho cov seem zoo / casing hlua los ntawm ntu | Feem ntau siv hla lub qhov qhib / tsis muaj lub sijhawm ua haujlwm liner / txuas ntxiv | Siv nyob rau hauv tej lub sij hawm inflow; qee zaum suav tias yog lwm txoj hauv kev nkag mus |
| Inflow tswj | Feem ntau yog nyob ntawm tom qab perforating / tiav cov cuab yeej | Kev cuam tshuam los ntawm qhov dav dav + qhov qauv + qhib cheeb tsam | Kev cuam tshuam los ntawm lub qhov taub + lub qhov pitch / qauv + qhib cheeb tsam |
| Xuab zeb tswj | Tsis muaj los ntawm nws tus kheej | txwv; nyob ntawm qhov sib piv qhov dav rau kev tsim cov xuab zeb | Feem ntau tsis muaj zog tshaj qhov qhib ntawm qhov chaw zoo sib xws; feem ntau xav tau kev ntsuas ntxiv |
| Tseem ceeb txaus ntshai | Kev rho tawm tsis ua hauj lwm / kev ncaj ncees thiab kev lees txais | Qhov dav dav → ntsaws lossis xuab zeb; qhov burrs/edges → khiav- hauv cov teeb meem thiab poob siab | Lub qhov tsis zoo tsim → xuab zeb / yaig; qhov burrs/edges → khiav-hauv cov teeb meem |
| Ua tiav logic | Kev ncaj ncees thiab kev lees txais tau tsav | Inflow + lub teeb xuab zeb tuav tau tsav | Inflow txoj kev tsim tsav |
Ntsiab lus:Hauv cased- daim ntawv thov lub qhov, tso siab rau ntawm ib qho screen/slotted seem raws li cov xuab zeb nkaus xwb- tswj kev ntsuas yuav muaj kev pheej hmoo siab dua, vimannulus / perforations yuav sau nrog xuab zeb thiab txo cov khoom tsim tau; ntsuas nws nyob rau hauv daim ntawv qhia ua tiav.
Vim li cas lawv txhua tus tuaj yeem "cia cov kua hauv," tab sis cov txiaj ntsig hauv teb txawv?
1. Vim hais tias qhib hom (qhov vs. slots) hloov peb yam: plugging vs. sanding rhiab heev, erosion lub neej, thiab khiav - nyob rau hauv kev pheej hmoo.
- Plugging vs. sanding: qhib qhov loj me me ua rau qhov tsis ua tiav
- Qhov dav / qhov taub me me dhau lawm: muaj kev pheej hmoo siab dua, kev poob siab dua, kev tsim khoom poob qis (qee zaum nws pib "zoo" thiab degrades dhau sijhawm).
Loj dhau: muaj kev pheej hmoo siab dua sanding, downstream yaig, thiab kev puas tsuaj rau li qub / manifolds thiab lwm yam khoom siv.
Slots feem ntau xaiv rau "lub teeb xuab zeb tuav" vim qhov dav dav tuaj yeem ua tau zoo li qhov ntsuas ntsuas. Tab sis nws tseem yog "lub teeb" xuab zeb tswj, tsis ua tiav xuab zeb - tswj qhov system.
2. Erosion: npoo yog cov ntsiab lus tsis muaj zog
Ntawm cov nqi siab nrog cov khoom khib nyiab thiab qhov siab siab, ob qho tib si qhov npoo thiab qhov npoo tuaj yeem erode. Qhov chaw qhib siab dua tsis tuaj yeem zoo dua. Erosion life and edge quality (deburring, edge finishing, cleaning) yuav tsum tau tshuaj xyuas ua ke nrog rau kev tsim inflow.
3. Khiav- nyob rau hauv kev pheej hmoo: ntau "tsis tuaj yeem khiav hauv" cov teeb meem los ntawm kev tswj tsis zoo
Yog hais tias burrs, deformation, los yog tu tsis tau tswj tom qab slotting / perforating, koj tuaj yeem pom:
- hang-ups thaum khiav-in
- drift / ID tsis ua haujlwm
- hauv zos deformation txwv cov cuab yeej tom ntej
Tias yog vim li cas tej yaam num zoo tsis tsuas yog thov rau "qhib tsis tau." Lawv kuj nug txog cov ntaub ntawv lees paub (kev xa khoom / daim npav ID, cov ntaub ntawv qhia txog qhov ntev) thiab yuav ua li cas qhib tau tiav. Rau Octal Pipe tej yaam num, cov khoom no feem ntau yog ua raws li thaum ntxov- qhib qhov ntev thiab layout, ntug tiav, drift/dimension cov ntaub ntawv, thiab ib tug matched cov ntaub ntawv pob khoom- yog li lub site tsis tas kho cov teeb meem tiv thaiv.
Peb feem ntau xaiv yuam kev
Scenario A: Koj xav tias koj xav tau xuab zeb tswj, tab sis koj tsuas yog xav tau cov dej ntws
Yog tias qhov tsim tsis yooj yim rau sanding, xaiv qhov "rau cov xuab zeb tswj" tuaj yeem ua rau muaj kev pheej hmoo siab thiab poob siab. Hauv ntau qhov xwm txheej, tus qauv perforated yog qhov txaus thiab yooj yim dua rau kev qhia (lub qhov taub, suab, qhib qhov ntev).
Scenario B: Koj cia siab tias qhov / qhov chaw ib leeg los daws cov xuab zeb tswj, tab sis qhov ua tiav tsis muaj qhov thaub qab
Yog tias cov xuab zeb zoo li (tus nqi siab, siab rub tawm, cov khoom tseem ceeb), kev cia siab rau ntawm qhov los yog qhov ib leeg tuaj yeem pheej hmoo. Txawm hais tias koj xav tau cov ntxaij vab tshaus, pob zeb pob zeb, lossis lwm yam xuab zeb- tswj cov tshuab yog ib qho kev txiav txim siab - theem, tsis yog "slots vs. qhov."
Scenario C: Koj underestimate txais thiab cov ntaub ntawv
Nrog rau EPC / TPI / xa tawm cov cai, cov teeb meem feem ntau tshwm sim ntawm cov ntaub ntawv thiab cov rooj txais kev pom zoo:
- RFQ hu rau 3.1/3.2, NDT, cov ntaub ntawv xeem, tab sis tus neeg muag khoom tsis tuaj yeem xa cov khoom tiav
- Koj xav tau phau ntawv MDR / Cov Ntaub Ntawv, tab sis tsuas yog tau txais ib qho yooj yim MTC
- Koj xav tau qhib cov ntaub ntawv loj / layout, tab sis tsuas yog tau txais lus pom zoo
Qhov no yog qhov uas cov sij hawm poob. Octal Yeeb Nkab feem ntau pib los ntawm kev ua raws li daim ntawv teev cov ntaub ntawv meej (dab tsi lub nkoj los ntawm lub neej ntawd, dab tsi yog xaiv tau, dab tsi xav tau thib peb -tus neeg tim khawv) kom txo tau qhov tsis paub tseeb thaum ntxov.
Txhawm rau nrawm nrawm rau ntawm qhov sib piv nrog qhov, npaj
- Ua tiav hom: openhole lossis cased-qhov; puas yuav muaj perforating lwm qhov?
- Tsim: xuab zeb loj faib, nplua cov ntsiab lus, sanding keeb kwm
- Rate thiab drawdown: lub hom phiaj tus nqi thiab kev cia siab poob ntau yam
- Kev pabcuam: media, kub, CO2 / H2S, khoom thauj khoom
- Qhov tseem ceeb: ua kom muaj dej ntau tshaj / txo qis xuab zeb / ua kom lub neej zoo
- Cov yeeb nkab hauv paus: OD, phab ntsa thickness, qib, kev sib txuas, ntev
- Qhib tsim: qhov dav lossis qhov taub, qauv / suab, qhib lub sijhawm ntev, lub hom phiaj qhib
- Txais & docs: drift/ID daim ntawv qhia, deburring yuav tsum tau, NDT, xeem, 3.1/3.2, MDR/Data Book, TPI tim khawv yog xav tau
Cov Lus Nug
Q1: Puas yog ib lub hnab ntim khoom zoo ib yam li lub vijtsam?
Tsis raws nraim. Lub tshuab slotted siv machined slots; "screen" feem ntau hais txog cov xuab zeb tshwj xeeb ntau dua -tswj tsim. Cov slots tuaj yeem yog qhov sib zog nkag / xuab zeb- kev xaiv khaws cia, thaum cov ntxaij vab tshaus feem ntau yog ib feem ntawm cov xuab zeb tshwj xeeb- tswj lub tswv yim.
Q2: Puas yog thaj chaw qhib ntau dua ib txwm zoo dua?
Tsis tas li. Kev qhib ntau dua tuaj yeem ua rau muaj kev pheej hmoo yaig, txo lub zog hauv zos, thiab nce kev nkag siab ntawm kev ntsaws lossis xuab zeb. Qhov loj thiab qauv zoo nyob ntawm qhov tsim thiab kev ua haujlwm.
Q3: Hauv cased-qhov, kuv puas tuaj yeem tso siab rau cov qhov / qhov uas tsuas yog cov xuab zeb tswj?
Ceev faj. Cased- qhov kev coj cwj pwm kuj nyob ntawm perforations, annulus tej yam kev mob, thiab xuab zeb deposition. Nws feem ntau muaj kev nyab xeeb dua los ntsuas qhov / qhov ua ib feem ntawm kev ua tiav tag nrho thiab xuab zeb- tswj txoj kev npaj.
Lus Cim Kawg
Tsis txhob pib nrog "slots lossis qhov." Pib nrog lub hom phiaj tiag tiag rau lub sijhawm ntawd: kev ncaj ncees / kev sib cais, kev nkag mus, lossis kev tswj cov xuab zeb. Thaum lub hom phiaj meej meej, kev xaiv yuav nrawm dua -thiab yog tias lub sijhawm yuav tsum dhau qhov kev lees paub nruj, txhais cov kev qhib tsis tau thiab cov ntaub ntawv nyob rau tib lub sijhawm.
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