OCTG
Koj tus kws tshaj lij OCTG tus neeg muab khoom
Raws li tus thawj coj ntawm kev sib xyaw roj thiab roj piping daws teeb meem hauv Suav teb,GNEEleverages nws ob lub chaw tsim khoom loj nyob rau sab qaum teb thiab sab qab teb kom tau txais txiaj ntsig zoo - cov khoom lag luam zoo, suav nrog OCTG casing, OCTG Tubing, laum yeeb nkab, yeeb nkab yeeb nkab, thiab OCTG fittings. Peb koom ua ke kev tsim khoom, kev lag luam, thiab kev pabcuam, ua kom txhua yam khoom muaj ntawv pov thawj nruj me ntsis nrog rau tag nrho - txheej txheem zoo traceability, ua rau peb muaj kev ntseeg siab hauv kev lag luam roj thiab roj thoob ntiaj teb.
Qhia luv luv rau OCTG
OCTG, tag nrho lub npe Roj Lub Tebchaws Tubular Khoom, roj tshwj xeeb yeeb nkab. Hais txog ib hom yeeb nkab steel tshwj xeeb uas siv rau cov roj thiab cov roj rho tawm, feem ntau yog cov kav dej seamless, tab sis cov kav dej welded kuj suav nrog feem ntau. Cov kav dej yog siv rau cov roj thiab roj qhov dej drilling thiab roj thiab roj tsheb thauj mus los. Nws muaj xws li roj drilling yeeb nkab, roj casing, roj extraction yeeb nkab.
OCTG Casing
OCTG casing muaj cov txheej txheem steel kav sib sib zog nqus embedded underground; nws ua haujlwm raws li lub neej kev ua kom muaj kev nyab xeeb thiab ruaj khov ntawm cov roj thiab roj qhov dej, tiv thaiv kev sib tsoo, thiab tiv thaiv ib puag ncig.
OCTG casing specification
| Yam khoom | Specification |
| Txuj | API Spec 5CT (Tswj tsab) |
| Kev tsim khoom | Seamless (SMLS) lossis Electric Resistance Vuam (ERW) |
| Sab nraud Diameter (OD) | 4-1/2 "- 20" (114.3mm - 508mm) |
| Phab ntsa Thickness (WT) | 0.205 "- 0.635" (5.21mm - 16.13mm) |
| Ntev Ntau | R1 (4.88-7.62m), R2 (7.62-10.36m), R3 (>10.36m) |
| Kev kho saum npoo | Liab qab, Sab Nraud Dub Varnish, Phosphating |
| Kev tiv thaiv | Hlau los yog yas xov tiv thaiv |
API 5CT Casing Steel Qib Classification
| Pab pawg | Qib | Daim Ntawv Thov / Kev Pabcuam Ib puag ncig |
| Pawg 1 | H40, J55, K55, N80-1/Q | Txheem ntiav mus rau nruab nrab qhov dej; tsis yog -cov chaw corrosive. |
| Pab pawg 2 | L80, C90, T95, C110 | Sour Service (H2S Resistance); tswj hardness rau tawg kuj. |
| Pab pawg 3 | P110 | High -Lub zog Wells; cov qhov dej tob nrog siab - qhov yuav tsum tau muaj siab. |
| Pab pawg 4 | Q125 | Kev Pabcuam tseemceeb; sib sib zog nqus qhov dej nrog siab heev thiab kev nyuaj siab. |
API 5CT Casing Xov thiab Xaus
Casing pob qij txha yog txuas nrog threaded couplings. Kev xaiv ntawm kev sib txuas yog nyob ntawm qhov yuav tsum tau ua ntawm kev thauj khoom thiab foob:
| Cov ntawv luv | Lub Npe | Nta thiab Daim Ntawv Thov |
| STC | Luv Round Xov | Tsawg zog sib koom ua ke; haum rau qhov dej ntiav / qis - qhov dej siab. |
| LTC | Ntev Round Xov | Cov xov ntev dua rau kev sib koom ua ke ntau zog; feem ntau kev sib txuas. |
| BTC | Buttress Xov | Trapezoidal xov; tsis tshua muaj siab tensile zog rau ntev, hnyav hlua. |
| Hwm | Kev sib txuas hwm hwm | Hlau -rau- hlaufoob; gas- nruj rau kev kub siab, qhov dej tob, thiab kev pabcuam HPHT. |
| PE | Plain End | Tsis yog - xov; siv rau tshwj xeeb vuam los yog ntxiv machining. |
Xim Ring Ntawm API 5CT Casing & Tubing
OCTG Tubing
OCTG Tubingyog hais txog me me - cov kav dej me me tau nruab rau hauv lub casing uas ua haujlwm tseem ceeb rau kev thauj cov roj thiab roj los ntawm cov dej hauv av mus rau qhov chaw.
API 5CT OCTG Tubing Specifications
| Yam khoom | Specification |
| Txuj | API Spec 5CT (Tswj tsab) |
| Kev tsim khoom | Seamless (SMLS) - Txuj rau siab -siab tubing |
| Sab nraud Diameter (OD) | 1.050", 1.315", 1.660", 1.900", 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2" |
| Hom Phab Ntsa Thickness | 0.113 "mus rau 0.430" (Varied los ntawm qhov hnyav thiab OD) |
| Ntev Ntau | Qhov siab 1 (6.10–8.53m),Qhov siab 2 (8.53–9.75m), Range 3 (>9.75m) |
| Kev kho saum npoo | Liab qab, Sab Nraud Dub Varnish, Internal Txheej (rau corrosion / ntws) |
| Sab hauv Drift | Standard los yog Tshwj Xeeb Drift (ua kom pom tseeb ntawm cov cuab yeej downhole) |
OCTG Tubing Steel Qib
| Qib | Pab pawg | Kev Pabcuam Ib puag ncig | Daim ntawv thov |
| H40 | Pawg 1 | General/Siab Wells | Tsis tshua muaj siab, qhov dej ntiav, lossis cov roj qhov dej. Tam sim no tsis tshua siv. |
| J55 | Pawg 1 | General / Txuj | Qib feem ntau.Siv rau qhov dej ntiav mus rau nruab nrab- qhov tob tob uas tsis muaj roj corrosive thiab tsis tshua muaj siab. Tus nqi ntau tshaj - zoo. |
| N80-1 / N80-Q | Pawg 1 | Nruab nrab-Deep / Standard | Siv rau qhov dej tob dua J55. N80-Q yog quenched thiab tempered rau zoo toughness nyob rau hauv complex kev nyuaj siab. |
| L80 (Tib 1) | Pab pawg 2 | Kev Pab Cuam (H2S) | Kev lag luam tus qauv rau H2S ib puag ncig.Hardness yog tswj nruj heev (Tsawg dua lossis sib npaug li 23 HRC) los tiv thaiv Sulfide Stress Cracking (SSC). |
| L80 (9Cr) | Pab pawg 2 | Mild CO2 Corrosion | Ib puag ncig nrog nruab nrab carbon dioxide (CO2); muab cov pitting zoo dua li cov qauv carbon steel. |
| L80 (13Cr) | Pab pawg 2 | Severe CO2 Corrosion | Martensitic Stainless hlau tubing.Tsim los rau siabCO2 thiab brine ib puag ncig. Dav dav siv nyob rau hauv ntug dej hiav txwv thiab siab -ntau qhov dej. |
| C90 | Pab pawg 2 | Critical Sour Service | Lub zog siab dua L80, haum rau qhov tob tob nrog qhov tseem ceebH2S concentrations. |
| T95 | Pab pawg 2 | Critical Sour / Siab Siab | Lub zog siab ua ke nrog SSC tsis kam. Siv rau qhov sib sib zog nqus, siab -siab, thiab acidic (kub). |
| P110 | Pab pawg 3 | Siab Siab / Deep Wells | Siab - qib zog.Siv rau ultra- qhov tob thiab siab - cov chaw cia siab. Feem ntau tsis pom zoo rauH2S kev pabcuam. |
Tubing threads thiab xaus kev sib txuas
Tubing kev sib txuas yog txawv ntawm casing vim hais tias lawv yuav tsum tuav lub siab sab hauv thiab nquag rub tawm hauv / tawm ntawm qhov dej.
| Cov ntawv luv | Lub Npe | Nqe lus piav qhia & Daim ntawv thov |
| EUE | External Upset End | Feem ntau.Cov yeeb nkab kawg yog thickened ( chim siab) ua ntej threading. Qhov no ua rau kev sib koom ua ke muaj zog dua li cov yeeb nkab lub cev. (8-txoj kab uas hla). |
| NUE | Tsis yog-Txhob Siab Kawg | Cov yeeb nkab kawg tsis yog thickened. Kev sib koom ua ke tsis muaj zog tshaj EUE; siv rau cov nqi qis - nqi, qhov dej ntiav. (10-round thread). |
| IJ | Kev sib koom ua ke | Ib kawg muaj ib tug poj niam xov (lub thawv) thiab lwm tus txiv neej xov (pin) ncaj qha rau ntawm cov yeeb nkab. Tsis siv coupling. Siv rau slim- qhov qhov dej. |
| Hwm | Kev sib txuas hwm hwm | Sivhlau-rau- hlau foobtsis yog tsuas yog xov cuam tshuam. Gas- nruj rau siab -siab, siab -kub (HPHT) thiab kev pabcuam qaub. |
Qhov txawv: Casing vs. Tubing
| Feature | Casing | Tubing |
| Lub Hom Phiaj Tseem Ceeb | Tiv thaiv kom zoo, tiv thaiv kev tawg. | Thauj roj / roj rau saum npoo. |
| Loj (OD) | Loj (txog 20 "). | Me me (feem ntau txog 4-1/2 "). |
| Cov xov xwm | BTC (Buttress), LTC. | EUE (Kev ntxhov siab sab nraud). |
| Kev teeb tsa | Permanent (Cemented nyob rau hauv qhov chaw). | Tshem tau (rau kev saib xyuas / ua haujlwm). |
OCTG Couplings
OCTG Couplingyog ib tug luv luv, internally threaded yeeb nkab haum siv los txuas ob leeg ntawm casing los yog tubing; nws yuav tsum nruj me ntsis phim cov yeeb nkab lub cev nyob rau hauv steel qib thiab xov hom los xyuas kom meej lub zog sib koom tes thiab sealing kev cia siab rau nyob rau hauv lub siab, hnyav loads, thiab corrosive downhole ib puag ncig.
Kev faib tawm ntawm OCTG Couplings
Couplings feem ntau yog cais raws li hom yeeb nkab uas lawv txuas thiab daim ntawv xov xwm tshwj xeeb:
A. Tubing Couplings
- EUE (Sab Nraud Upset End):External chim couplings. Cov no yog cov feem ntau siv tubing kev sib txuas, featuring ib tug loj Outer Diameter (OD) thiab siab sib koom ua ke.
- NUE (Tsis yog-Upset End):Tsis yog - chim siab couplings. Feem ntau siv rau qhov qis - siab los yog qhov dej ntiav, muaj qhov me me OD piv rau EUE.
B. Casing Couplings
- STC (Short Round Xov):Short round xov couplings. Feem ntau yog siv rau cov qhov dej ntiav nrog cov kev xav tau qis dua.
- LTC (Long Round Xov):Ntev round xov couplings. Cov no muaj kev sib khi zoo dua thiab muaj zog dua piv rau STC.
- BTC (Tebchaws)Buttress xov couplings. Featuring trapezoidal threads, lawv muab lub zog tensile siab heev, muaj peev xwm txhawb nqa qhov hnyav ntawm cov hlua hnyav hnyav.
C. Lub Hom Phiaj Tshwj Xeeb Couplings
- Tshwj xeeb Clearance Couplings:Kuj tseem hu ua slim{0}} qhov txuas. Cov no yog tsim tshwj xeeb rau cov qhov dej nqaim, nrog rau OD me dua li cov qauv API txuas los muab kev tshem tawm ntxiv.
- Foob Ring Couplings:Cov couplings no muaj cov grooves sab hauv haum nrog PTFE (Polytetrafluoroethylene) foob rings los txhim kho roj- nruj sealing kev ua tau zoo.
Dill cev
OCTG laum yeeb nkab yog lub siab - lub zog, hnyav - lub luag haujlwm seamless steel yeeb nkab siv hauv cov roj thiab roj laum hlua kom xa lub zog mus rau lub laum me ntsis thiab ncig cov dej drilling. Nws tau tsim tshwj xeeb los tiv thaiv lub zog hnyav, kev ntxhov siab tensile loj, thiab siab - lub zog siab thaum sib sib zog nqus- qhov dej drilling.
Loj: 2-3 / 8 "--6-5/8"
Txuj: API 5DP
Length: Range 1, Range 2, Range 3
Drill Pipe Steel Qib & Mechanical Properties (API 5DP)
Cov qib steel qhia tau hais tias qhov kev tawm los thiab tensile lub zog ntawm cov khoom, xaiv raws li qhov tob tob, torque, thiab ib puag ncig kev ntxhov siab.
| Qib | Min. Yield zog (psi) | Min. Yield zog (MPa) | Tensile zog (psi) | Tensile zog (MPa) | Daim ntawv thov |
| E-75 | 75,000 | 517 | 100,000 | 689 | Lub hom phiaj dav dav; rau nruab nrab-rau- qhov dej ntiav thiab kev ua haujlwm niaj hnub. |
| X-95 | 95,000 | 655 | 105,000 | 724 | High - qib zog rau qhov tob tob lossis ib puag ncig uas muaj kev ntxhov siab ntau dua. |
| G-105 | 105,000 | 724 | 115,000 | 793 | High - qib kev ua tau zoo rau cov qhov dej tob thiab cov txheej txheem geological nyuaj. |
| S-135 | 135,000 | 931 | 145,000 | 1,000 | Qib siab zograu ultra-qhov tob thiab txuas ntxiv- ncav cuag (ERD) qhov dej. |
Cov cuab yeej sib txuas & kev sib txuas
Drill pipes feature aPin(txiv neej) thiab aLub thawv(poj niam) connector ntawm ob kawg. Cov qauv kev sib txuas uas muaj xws li:
NC (Numbered Connection):Xws li NC31, NC38, NC50 (Cov qauv kev lag luam niaj hnub).
IF (Internal Flush):Muaj cov kua dej tsawg tsawg; feem ntau hloov tau nrog NC (piv txwv li, NC50=4-1/2" IF).
FH (Full Hole):Features ib tug loj internal bore.
REG (Regular):Txheem rau me ntsis kev sib txuas.
Hom kev chim siab (Thib kawg Thickening)
Txij li thaum cov pob qij txha tau welded, cov yeeb nkab kawg yog " chim siab" los them rau lub zog poob hauv tshav kub- thaj tsam cuam tshuam:
IU (Internal chim):Thicker ntawm sab hauv.
EU (Sab nraud chim):Thicker rau sab nraud.
IEU (Internal & External chim):Thicker ntawm ob sab (siab tshaj plaws; feem ntau).
Classification ntawm Drill Pipes & String Components
| Hom | Tsim nta | Ntsiab Function | Txheem / Qib | Cov ntawv thov zoo tshaj plaws |
| Standard Drill Pipe | Seamless steel yeeb nkab nrog cov phab ntsa nyias thiab cov cuab yeej welded ntawm ob qho kawg. | Transmits torque thiab drilling zog; pab kom drilling av nkos. | API 5DP:Qib E, X, G, S | Cov haujlwm niaj hnub onshore thiab offshore drilling ua haujlwm. |
| Heavy Weight Drill Pipe (HWDP) | Phab ntsa thickness ntawm tus qauv yeeb nkab thiab dab tshos; nta anruab nrab chim siab(tus tiv thaiv). | 1. Muab kev hloov pauv kom nruj kom tsis txhob qaug zog; 2. Muab qhov hnyav ntawm ntsis (WOB) hauv cov qhov dej taw qhia. | API 7-1 / Cov qib siab muaj zog muaj tswv | Cov qhov dej taw qhia, qhov dej kab rov tav, thiab thaj chaw hloov pauv saum BHA. |
| Laum dab tshos | tuab heev-walled, hnyav- cov kav dej; feem ntau nrogkauv zawjlos tiv thaiv qhov sib txawv sticking. | Nyob rau hauv qab ntawm txoj hlua; muab lub ntiajteb txawj nqus ncaj qha rau Qhov hnyav ntawm ntsis (WOB); tswj kev ruaj ntseg. | API 7-1: 4145H Hloov Cov Hlau | Hauv qab Qhov Sib Tsoo (BHA) yuav tsum tau muaj zog thiab hnyav. |
| Sour Service Drill Pipe | Tswj tshuaj muaj pes tsawg leeg nrog tshwj xeeb tempering rautswj hardness (HRC Tsawg dua lossis sib npaug rau 26). | Tiv thaivSulfide Stress Cracking (SSC)nyob rau hauv siab H2S (qaub) ib puag ncig. | NACE MR0175 / ISO 15156; High- qib toughness | Cov roj acids thiab roj av uas muaj Hydrogen Sulfide (H2S). |
| Aluminium Alloy Laum Pipe | Ua los ntawm siab -lub zog aluminium alloy; hnyav xwb40%-50%ntawm steel laum yeeb nkab. | Tseem ceeb txo rig nuv load; txo cov kev sib txhuam tsis sib haum hauv ultra- qhov dej tob. | 7000 Series Siab -Lub zog Aluminium | Extended Reach Drilling (ERD), qhov tob tob drilling, thiab corrosive ib puag ncig. |
| Tsis yog-Magnetic Drill Pipe | Forged los ntawm austenitic stainless hlau los yog tshwj xeeb uas tsis yog{0}}sib nqus hlau nplaum. | Tiv thaiv kev sib nqus cuam tshuam nrog cov cuab yeej tshawb fawb downhole (MWD/LWD) rau cov ntaub ntawv raug. | Tsis yog -Magnetic Austenitic Steels (xws li Monel alloys) | Cov kev taw qhia kev soj ntsuam seem thiab cov cuab yeej tiv thaiv cheeb tsam. |
| Ultra-High Strength Laum Pipe | Engineered dhau API txwv nrog huab tensile thiab torque load peev xwm. | Txhawb nqa tus kheej loj- hnyav ntawm ultra- txoj hlua ntev hauv qhov dej tob; tiv thaiv cov yeeb nkab parting. | V-150, Z-160 (Cov qib uas tsis yog API) | Ultra-deep wells (>10,000m) thiab loj - tho qhov tob tob. |
Dab tsi yog Qhov Zoo ntawm GNEE OCTG?
Lub zog thiab Durability
Cov kav dej OCTG yog tsim thiab tsim los nrog cov khoom siv siab - zoo uas muab lub zog siab thiab ua haujlwm ntev. Cov kav dej no tuaj yeem tiv taus kev kub ntxhov thiab kev thauj khoom sab nraud, nrog rau kev ua haujlwm hnyav xws li kev kub siab, huab cua kub, thiab corrosive ib puag ncig. Lub zog thiab kav ntev yog qhov tseem ceeb hauv cov roj thiab roj drilling thiab kev ua haujlwm ntau lawm.
Corrosion Resistance
Cov kav dej OCTG feem ntau tau nruab nrog cov txheej txheem tiv thaiv xws li tiv thaiv- cov txheej txheem xeb lossis cov txheej txheej galvanized los tiv thaiv lawv ntawm corrosion. Cov coatings no pab kom ntev lub neej ntawm cov kav dej thiab tswj lawv cov qauv kev ncaj ncees nyob rau hauv ib puag ncig corrosive. Kev tiv thaiv corrosion zoo yog qhov tseem ceeb rau kev ua kom ntseeg tau thiab kev nyab xeeb ntawm cov kav dej txuas.
Ntau Yam Muaj
OCTG kav dej muaj nyob rau hauv ntau qhov ntau thiab tsawg, cov duab, thiab cov kev qhia tshwj xeeb kom tau raws li cov kev xav tau sib txawv hauv kev lag luam roj thiab roj. Cov kav dej no tuaj yeem tsim nyob rau hauv ntau txoj kab uas hla, phab ntsa thicknesses, thiab ntev raws li qhov project tshwj xeeb. Qhov muaj ntau haiv neeg no tso cai rau kev hloov pauv thiab hloov pauv hauv kev tsim thiab siv cov kav dej.
Yooj yim Vuam thiab kev sib txuas
OCTG cov kav dej feem ntau yog tsim los nrog welded kawg thiab tuaj yeem txuas tau yooj yim nrog cov pob qij txha. Qhov no txhawb kev txhim kho thiab kev sib txuas ntawm cov kav dej hauv cov kav dej. Tsis tas li ntawd, kev sib txuas ntawm OCTG siab heev xws li kev sib txuas hwm zoo lossis tsis yog- kev sib txuas steel chim tuaj yeem muab lub zog ntxiv thiab kev ruaj ntseg hauv kev ua haujlwm hnyav -.
Kev them nyiaj yug Technology
OCTG cov kav dej tau txais txiaj ntsig los ntawm kev sim siab thiab tshuaj xyuas thev naus laus zis kom ntseeg tau tias lawv qhov zoo thiab kev ntseeg tau. Cov kav dej no tau txais ntau yam kev sim, suav nrog kev ntsuas siab, ntsuas qhov tawv, tsis yog - kuaj kev puas tsuaj, thiab lwm yam. Kev txhawb nqa thev naus laus zis txhawb kev ntseeg siab tias cov kav dej no ua tau raws li cov qauv thiab cov lus qhia tshwj xeeb uas xav tau hauv kev lag luam roj thiab roj.
Txheej txheem ntawm OCTG
Hlau Ntau Lawm
Welded lossis seamless steel kav yog qhov tseem ceeb rau kev tsim OCTG. Hlau yog tsim los ntawm melting hlau thiab ntxiv ntau yam tshuaj alloying los hloov nws cov khoom.
Cov yeeb nkab tsim
Cov kav dej yog tsim los ntawm kev tsim ib lub raj hollow los ntawm cov khoom hlau. Cov neeg tsim khoom siv rotational piercing lossis extrusion. Lawv tsim welded kav los ntawm welding tog twg los ib tug coiled sawb ntawm steel los yog ob bent steel daim hlau lengthwise.
Kev kho cua sov
quenching thiab tempering yog ob hom kev kho cua sov siv rau hauv cov kav dej los txhim kho lawv cov khoom siv kho tshuab thiab tshem tawm cov tensions sab hauv.
Xov
OCTG cov kav dej suav nrog cov xov txuas uas ua rau kev teeb tsa thiab sib txuas yooj yim hauv qhov dej. Cov neeg tsim khoom siv cov cuab yeej los tiv thaiv kev xau.
OCTG Yeeb Nkab Hoobkas
OCTG Test equipments
GNEE Certificate
GNEE's OCTG yeeb nkab ntau lawm tshuab tau mus txog lub ntiaj teb cov txheej txheem nruab nrab. Nws tau raug lees paub los ntawm ntau lub tuam txhab ua haujlwm thiab tau dhau los ua lub hnub qub lag luam hauv Asia.
Tiv tauj peb
Cov lus nug nquag
Q: Hom OCTG yog dab tsi?
A: Hauv kev lag luam, OCTG tau muab faib ua peb hom tseem ceeb raws li lawv txoj haujlwm hauv lub qhov dej:Drill Pipe, Casing, thiabTubing.
Drill Pipes
Laum yeeb nkab yog qhov hnyav - lub luag haujlwm, seamless raj uas tig lub laum me ntsis thiab circulates drilling kua. Nws yog "chav cav" ntawm txoj hlua drilling.
Muaj nuj nqi:Transmits torque los ntawm qhov chaw rig mus rau lub laum me ntsis thiab nqa drilling av nkos mus rau me ntsis thiab rov qab mus rau lub annulus.
Cov yam ntxwv tseem ceeb:Lub zog muaj zog tiv taus huab cua nruj, torque, thiab sab hauv siab.
Txheem: API Spec 5DP.
Qib: E-75, X-95, G-105, S-135.
Casing
Casing yog qhov loj - txoj kab uas hla cov yeeb nkab uas tau muab tso rau hauv ib qho tsis ntev los no drilled seem ntawm borehole thiab cemented nyob rau hauv qhov chaw. Nws tsim cov txheej txheem retainer rau cov phab ntsa ntawm cov roj thiab roj zoo.
Muaj nuj nqi:
Tiv thaiv lub qhov dej los ntawm kev sib tsoo.
Tiv thaiv cov tshiab - dej xuab zeb (dej hauv av) los ntawm kev sib kis.
Tiv thaiv kev sib txawv ntawm "kev sib txuas lus" nrog ib leeg.
Hom Casing (los ntawm Theem):
Conductor Casing:Thawj txoj hlua (tiv thaiv sab saum toj- qhov ntxuav tawm).
Nto Casing:Tiv thaiv dej hauv av thiab txhawb nqa BOP (Blowout Preventer).
Intermediate Casing:cais qhov siab - thaj chaw siab lossis thaj chaw uas ploj lawm.
Production Casing:Txoj hlua zaum kawg los ntawm kev tsim cov roj / roj.
Txheem: API Spec 5CT.
Qib: J55, K55, N80, L80, P110, Q125.
Tubing
Tubing yog cov yeeb nkab uas cov roj los yog roj raug thauj los ntawm lub qhov dej mus rau qhov chaw tom qab qhov drilling tiav.
Muaj nuj nqi:Ua raws li lub ntsiab conduit rau cov kua ntau lawm. Nws tau muab tso rau hauv qhov tsim cov casing.
Cov yam ntxwv tseem ceeb:Nws yog tsim los kom tshem tau; Yog hais tias lub raj puas los yog corroded, nws tuaj yeem hloov tau (tsis zoo li casing, uas yog cemented nyob rau hauv qhov chaw).
Txheem: API Spec 5CT.
Kev sib txuas:Feem ntau siv "Premium Connections" (gas-tight) rau siab -siab lossis corrosive gas qhov dej.
Q: Qhov txawv ntawm kab yeeb nkab thiab Octg yog dab tsi?
A: OCTG yog raudrilling thiab ntau lawm; Kab Yeeb yog raukev thauj mus los.
OCTG (Oil Lub Tebchaws Tubular Khoom):Sivhauv qhov dej(downhole).
Cov kav dej (Lum Pipe, Casing, thiab Tubing) yog siv los laum lub qhov dej thiab rho cov roj / roj rau saum npoo.
Txheem:API 5CT, API 5DP.
Kab Yeeb:Sivsab nraum lub qhov dej(kev thauj mus los).
Cov kav dej no yog siv rau cov kav xa dej los thauj cov roj, roj, lossis dej nyob deb ntawm lub qhov dej mus rau qhov chaw refineries lossis lub tank cia.
Txheem:API 5L.
Q: Dab tsi loj yog Octg tubing?
A: OCTG tubing qhov ntau thiab tsawg feem ntau yog los ntawm1.050 nti rau 4-1/2 ntinyob rau sab nraud txoj kab uas hla (OD).
Qhov ntau thiab tsawg siv nyob rau hauv lub teb yog:
2-3/8"(60.3 hli)
2-7/8"(73.0 hli)
3-1/2"(88.9 hli)
4-1/2"(114.3 hli)
Q: Dab tsi yog kev siv cov yeeb nkab Octg?
A: OCTG (Oil Lub Tebchaws Tubular Khoom) cov kav dej yog siv rau covkev tshawb nrhiav thiab kev tsim khoomntawm roj thiab roj. Lawv peb lub ntsiab siv yog:
Drilling (Lwm Pipe):Siv los tig lub laum me ntsis, xa lub zog mus rau hauv qab ntawm qhov dej, thiab ncig cov av nkos drilling.
Kev them nyiaj yug tus qauv (Casing):Siv los ua kab lub qhov dej kom tiv thaiv lub qhov dej los ntawm kev sib tsoo thiab tiv thaiv cov dej hauv av los ntawm kev sib kis.
Production (Tubing):Siv los ua "conduit" los thauj cov roj thiab roj los ntawm cov dej hauv av mus rau saum npoo.
Q: Qhov txawv ntawm Casing thiab Tubing yog dab tsi?
A: Casingyog ib tug ruaj khov qauv cemented rau hauv lub qhov dej los muab cov qauv kev ncaj ncees. Nws yog feem ntau loj hauv txoj kab uas hla (txog 20 ").
Tubingyog cov khoom siv hluav taws xob tso rau hauv lub casing. Nws yog tshem tau thiab hloov tau yog tias puas los yog corroded. Tubing qhov ntau thiab tsawg feem ntau yog los ntawm 1.050 "mus rau 4-1/2".
Q: "Sour Service" (SSC) yog dab tsi thiab yuav tsum muaj qib twg?
A: "Sour Service" yog hais txog ib puag ncig uas muajHydrogen sulfide (H2S), uas ua rau Sulfide Stress Cracking (SSC).
Rau cov xwm txheej no, cov qib tshwj xeeb nyiamL80-1, C90, T95, thiab C110siv. Cov ntaub ntawv no tau tswj xyuas qhov nyuaj (feem ntau Tsawg dua lossis sib npaug ntawm 22-26 HRC) thiab cov kev kho cua sov tshwj xeeb kom ntseeg tau tias muaj zog.
Q: Dab tsi yog annular ntim ntawm casing thiab tubing siv rau?
A: Covannular ntim(qhov chaw nruab nrab ntawm sab nrauv thiab sab hauv tubing) ua haujlwm ntau yam tseem ceeb:
Kev khiav dej num:Nws muab txoj hauv kev los ua kom cov kua dej ntws tawm (xws li av nkos lossis tua cov kua dej) nce lossis nqis hauv lub qhov dej thaum tu lossis zoo- tswj kev ua haujlwm.
Artificial Lift (Gas Lift):Hauv ntau lub qhov dej, cov pa roj tau txhaj rau hauv lub annulus kom nkag mus rau hauv lub raj los ntawm cov li qub, pab nqa cov roj hnyav rau saum npoo.
Tshuaj Txhaj Tshuaj:Nws yog siv los tso tshuaj tua kab mob (tiv thaiv corrosion, nplai, lossis siv quav ciab) rau hauv cov kwj deg.
Kev Tswj Xyuas Zoo:Los ntawm kev saib xyuas lub siab nyob rau hauv lub annulus, cov neeg ua haujlwm tuaj yeem ntes cov xau hauv cov raj lossis cov ntim khoom, ua kom lub qhov dej muaj kev nyab xeeb.
Q: Dab tsi yog txoj hauv kev sib txuas rau OCTG?
A: OCTG kav yog threaded ntawm ob qhov kawg rau kev yooj yim installation thiab kev twb kev txuas. Ob hom kev sib txuas ntawm cov yeeb nkab feem ntau yog:
API Kev Sib Txuas: Cov kev sib txuas no yog API- ua raws thiab siv dav hauv kev lag luam. API Regular, API Sab Nraud- chim siab, thiab API Integral-Kev sib koom ua ke yog nyob ntawm lawv.
Kev sib txuas hwm hwm: Cov kev sib txuas hwm zoo muab kev sib khi zoo dua, kev ua haujlwm siab, thiab lub zog qaug zog. Cov kev sib txuas no yog tsim los siv rau hauv ib puag ncig hnyav thiab kev siv tseem ceeb.
Q: Dab tsi yog OCTG Pipe Inspection Process?
A: Visual & Dimensional Inspection (Lub hauv paus)
Visual Surface Inspection (VSI):Cov kws kho mob tshawb xyuas qhov chaw sab nraud thiab sab hauv rau qhov tsis xws luag xws li laps, seams, scabs, pits, lossis mechanical puas (dents and gouges).
Dimensional Verification:
Sab nraud Diameter (OD) & Phab ntsa Thickness (WT):Ntsuas siv calipers thiab ultrasonic gauges los xyuas kom meej tias lawv ua tau raws li API 5CT / 5DP kam rau ua.
Length Kev Ntsuas:Cov kav dej tau muab faib ua ntau yam 1, 2, lossis 3.
Txheeb xyuas qhov ncaj:Xyuas kom cov yeeb nkab lub cev tsis tau hneev lossis khoov dua li cov qauv txwv (feem ntau yog 0.2% ntawm tag nrho qhov ntev).
Drift Test (Internal Clearance)
Full -Length Drift (FLD):Ib tug cylindrical mandrel ( "Drift") yog dhau los ntawm tag nrho cov bore ntawm cov yeeb nkab.
Lub hom phiaj:Qhov no tau lees paub tias lub taub sab hauv (ID) yog qhov tseeb thiab cov cuab yeej downhole, twj, lossis cov hlua me tuaj yeem hla tsis tau daig.
Xov & Txuas Kev Tshuaj Xyuas
Visual Thread Inspection:Tshawb xyuas cov galling, torn threads, los yog corrosion ntawm tus pin thiab lub thawv xaus.
API 5B Kev Ntsuas:Siv cov ntsuas tshwj xeeb los ntsuas:
Lead:Qhov kev ncua deb ntawm xov peaks.
Taper:Qhov kev hloov ntawm txoj kab uas hla raws txoj xov.
Xov Height/Depth:Xyuas kom cov xov profile yog lawm.
Kev soj ntsuam kev sib txuas hwm hwm:Rau cov pa roj-cov ntsaws ruaj ruaj, cov kws tshaj lij siv cov txheej txheem tshwj xeeb los tshuaj xyuas cov hlau- mus rau- hlau foob qhov chaw thiab lub xub pwg nyom.
Tsis yog -Kev kuaj kev puas tsuaj (NDT / EMI)
NDT yog lub plawv ntawm OCTG kev tswj kom zoo, siv los nrhiav qhov tsis zoo ntawm qhov chaw uas lub qhov muag tsis pom.
Electromagnetic Inspection (EMI):Siv cov hlau nplaum sib nqus kom pom qhov ntev thiab qhov tsis sib xws hauv cov yeeb nkab lub cev.
Kev kuaj ultrasonic (UT):Siab - zaus suab tsis ntsuas phab ntsa thickness thiab ntes cov laminations sab hauv lossis tawg.
Magnetic Particle Inspection (MPI):Siv feem ntau ntawm cov yeeb nkab kawg (qhov "End Area") thiab cov cuab yeej sib txuas kom pom qhov chaw thiab ze rau - cov kab nrib pleb.
Eddy Current Testing:Siv rau saum npoo - rhuav tshem qhov tsis xws luag thiab kev txheeb xyuas cov khoom.
Mechanical & Pressure Testing
Kev Ntsuas Hydrostatic:Txhua cov yeeb nkab yog ntim nrog dej thiab nias rau ib theem tshwj xeeb (xws li API qauv) tsawg kawg 5 vib nas this. Qhov no ua pov thawj cov yeeb nkab "lub zog tawg" thiab ua kom qhov kev sib txuas yog xau- pov thawj.
Kev kuaj Hardness:Tshwj xeeb rauSour Serviceqib (piv txwv li, L80, C90, T95). Cov kws kho mob siv Rockwell lossis Brinell testers kom ntseeg tau tias cov hlau tsis nyuaj dhau, uas yuav ua rau nws raug rau Sulfide Stress Cracking (H2S corrosion).
Traceability & Stenciling
Marking/Stenciling:Thaum dhau lawm, cov yeeb nkab yog stenciled nrog nws qhov loj, qib, qhov hnyav, tus qauv, thiabKub naj npawb.
Xim Coding:Cov qib sib txawv yog pleev xim nrog cov xim tshwj xeeb (xws li, ib lub paj liab ci rau N80, lossis ib lub paj liab liab rau P110) kom pom tau yooj yim ntawm qhov chaw rig.
MTR (Cov ntaub ntawv xeem cov ntaub ntawv):Tag nrho cov ntaub ntawv tshuaj xyuas yog muab tso ua ke rau hauv ib daim ntawv uas muab tag nrho traceability los ntawm steel zeb mus rau lub wellbore.