1. Isishwankathelo – Kutheni iX65MS+Incoloy 825 isetyenziselwa iSour Service
Igesi emuncu emanzi – equlethe i-hydrogen sulfide (H₂S), i-carbon dioxide (CO₂), kwaye idla ngokuba yi-chloride – yenye yezona ndawo zinobundlongondlongo kakhulu kwiipayipi zentsimbi yekhabhoni. Intsimbi eqhelekileyo ye-X65 iyaphela ngokukhawuleza ngenxaukuqhekeka koxinzelelo lwe-sulfide (SSC)kwayeukuqhekeka okubangelwa yi-hydrogen (HIC).
Umbhobho we-X65MS+Incoloy 825 ogqunywe nge-bimetalyenzelwe ngokukodwa iimeko ezinjalo:
● Intsimbi exhasayo yangaphandle ye-X65MSyinguqulelo ye-X65 eguqulwe yi-sour-service. Ine-carbon ephantsi (≤0.10%), i-sulfur ephantsi (≤0.002%), kunye nobunzima obulawulwayo (≤248 HV) ukumelana ne-SSC kunye ne-HIC njengoko kufuneka yi-NACE MR0175 / ISO 15156.
●Isigqubuthelo se-Incoloy 825 sangaphakathi (UNS N08825)yi-alloy esekelwe kwi-nickel equlethe i-38-46% Ni, i-19-23% Cr, i-2.5-3.5% Mo, kunye ne-copper kunye ne-titanium. Imelana ne-H₂S, i-CO₂, ii-chloride eziphezulu, i-elemental sulfur, kunye nee-organic acids kuluhlu olubanzi lwe-pH kunye nobushushu.
Ezi layere zimbini zidityaniswa ngokusisigxina yi-metallurgical bond (i-hot roll bonding + i-JCOE forming). Ngokungafaniyo nombhobho ofakwe ngoomatshini, kukhoakukho mngcipheko wokudilika kwe-liner, ukushwabana, okanye ukubola kwe-cravice kwindawo yokujonga.
Olu didi lulo olusemgangathweni kushishinoukuqokelelana kwegesi emuncu elwandle,ukuhamba kweendlela zokufaka i-asidi gas injection (AGI),Imigca yokutya kwezityalo zikaClauskunyeimithombo yokulahla inkunkuma enoxinzelelo oluphezulu.
2. Iimpawu eziphambili kunye neenzuzo
| Uphawu | Inzuzo |
| Inkxaso yenkonzo ye-X65MS sour | I-NACE MR0175 iyahambelana – ubunzima ≤248 HV, ayixhathisi kwi-SSC/HIC |
| I-Incoloy 825 cladding | Iyamelana ne-H₂S, i-CO₂, iikloridi, isalfure, ii-asidi ze-organic – PREN 30 35 |
| Ibhondi epheleleyo yesinyithi | Akukho kudilika/ukudilika kwe-liner – amandla okucheba ≥200 MPa |
| Ubomi benkonzo ende | Ngokwesiqhelo iminyaka engama-25-30 kwinkonzo yegesi emuncu |
| Ukonga iindleko | Ixabiso eliphantsi ngama-40-60% kune-solid Incoloy 825 okanye i-Alloy 625 pipe |
| Amaxwebhu apheleleyo | EN 10204 3.1/3.2; Ingxelo yokuthobela i-NACE; iirekhodi zovavanyo lwe-UT, i-MT, kunye ne-hydro |
3. Iinkcukacha zeDatha yoBugcisa kunye neNkcukacha zeMpahla
3.1 Ulwakhiwo lweeKhemikhali (%)
| I-elementi | Inkxaso ye-X65MS (ubuninzi) | I-Incoloy 825 Cladding (eqhelekileyo) |
| Ikhabhoni (C) | 0.10 | ≤0.05 |
| I-Silicon (Si) | 0.45 | ≤0.50 |
| IManganese (Mn) | 1.35 | ≤1.00 |
| I-Phosphorus (P) | 0.020 | ≤0.030 |
| I-Sulfur (S) | 0.002 | ≤0.015 |
| I-Chromium (Cr) | 0.30 | 19.5 – 23.5 |
| I-Nickel (Ni) | 0.30 | 38.0 – 46.0 |
| I-Molybdenum (Mo) | 0.15 | 2.5 – 3.5 |
| I-Copper (Cu) | 0.20 | 1.5 – 3.0 |
| I-Titanium (iTi) | 0.04 | 0.6 – 1.2 |
| I-Vanadium (V) | 0.08 | — |
| I-Niobium (Nb) | 0.05 | — |
3.2 Iipropati zoomatshini
| Ipropati | Inkxaso ye-X65MS | Isigqubuthelo se-Incoloy 825 |
| Amandla okuKhula (min, MPa) | 450 | 240 (ifakwe phantsi) |
| Amandla okuThamba (min, MPa) | 535 | 550 |
| Ukwandiswa (ubuncinci, %) | 18 | 30 |
| Ubunzima (ubuninzi, HV10) | 248 nge-NACE nganye | 240 |
| Impembelelo (iCharpy, 0°C, ubuncinci J) | 100 (umndilili) | — |
3.3 Unxibelelwano lweBond kunye nokuThotyelwa koMgca
| Ipharamitha | Imfuneko | Amanqaku |
| Amandla okucheba | ≥200 MPa | I-API 5LD |
| Ukuthembeka kwebhondi ye-UT | Akukho disbond >50mm | Ukuskena nge-100% |
| Ukuxhathisa kwe-SSC | Intsimbi engasemva: NACE TM0177 Indlela A | Akukho kuqhekeka kwi-80% SMYS |
| Ukuxhathisa kwe-HIC | Intsimbi engasemva: NACE TM0284 | I-CLR ≤15%, i-CTR ≤5%, i-CSR ≤2% |
| I-Incoloy 825 pitting | I-PREN = Cr+3.3Mo+16N ≈ 30-35 | Iyamelana nobushushu obufikelela kwi-150°C kwiikloridi eziphezulu |
3.4 Uluhlu lweDimensional (Oluqhelekileyo)
| I-OD (intshi/mm) | Ubunzima obuxhasayo (mm) | Ubunzima bokugquma (mm) | Ubude obuphezulu (m) |
| 8″ (219.1) | 10.0 – 18.0 | 2.0 – 2.5 | 18 |
| 10″ (273.1) | 10.0 – 20.0 | 2.0 – 2.5 | 18 |
| 12″ (323.9) | 12.0 – 22.0 | 2.0 – 3.0 | 18 |
| 16″ (406.4) | 12.0 – 25.0 | 2.5 – 3.0 | 18 |
| 20″ (508.0) | 12.0 – 28.0 | 2.5 – 3.0 | 18 |
| 24″ (609.6) | 14.0 – 30.0 | 2.5 – 3.0 | 18 |
| 30″ (762.0) | 14.0 – 30.0 | 3.0 – 3.5 | 18 |
| 40″ (1016.0) | 16.0 – 32.0 | 3.0 – 3.5 | 18 |
Ubungakanani obulungiselelwe wena bufumaneka xa uceliwe.
4. Inkqubo yoMveliso – iHot Roll Bonding + JCOE
Inkqubo yokuvelisa ipayipi ye-X65MS+Incoloy 825 clad ilandela ngokungqongqo isiqinisekiso somgangatho wenkonzo emuncu:
●Ukukhethwa kwezinto kunye nokuqinisekiswa– Ipleyiti ye-X65MS kunye nepleyiti ye-Incoloy 825 zithathwe kwiifektri ezivunyiweyo. Ikhemistri ye-OES kunye nobunzima ziyaqinisekiswa.
● Ukulungiswa komphezulu– Zombini iipleyiti ziyacocwa kwaye zicolwe ukuze kususwe isikali kunye ne-oxide.
● Ukufaka i-vacuum stacking– Iipleyiti zibekwe ndawonye (i-Incoloy 825 ngaphakathi), imiphetho ivalwe phantsi kwe-vacuum (≤10 Pa) ukuthintela i-oxidation ngexesha lokufudumeza.
● Ukuqengqeleka okushushu– I-stack ishushu ukuya kwi-1180-1250°C, iqengqelwe kwi-high reduction ratio (≥5:1). I-Metallurgical bond yenziwa ngokusasazeka kwe-atom.
● Ukuhlolwa kwepleyiti yengubo– Ukuskena kwe-ultrasonic eyi-100% ukuze kuqinisekiswe ukuthembeka kwebhondi.
● Ukwenziwa kweJCOE– Ipleyiti egqunyiweyo igqunywe ngeprofayili enezitebhisi, ize yenziwe ibe yipayipi evulekileyo nge-JCO presses.
● Ukuwelda komthungo we-longitudinal– Ipaseji yokuwelda yangaphakathi ene-Incoloy 625 filler; iipaseji zangaphandle ezine-filler yentsimbi ekhabhoni ephantsi. Inkqubo yokuwelda ifanelekile kwi-NACE/API 5LD.
● Ukufakwa kwe-weld (ukufakwa kwe-overlay okukhethwayo)– Umthungo we-weld wangaphakathi unokugqunywa nge-Incoloy 625 ukuze kuphuculwe ukumelana nokugqwala.
● Unyango lobushushu– Ukunciphisa uxinzelelo (PWHT) ukuba kuyimfuneko ngokwekhowudi yoyilo; kungenjalo akukho unyango lobushushu lokugcina iipropati zenkonzo yesinyithi esithambileyo.
● I-NDT kunye novavanyo– Jonga iCandelo 5.
● Phelisa ukugqiba– Iziphelo zeBevel + ioyile yokulwa nomhlwa + iikepusi zeplastiki.
5. Ulawulo loMgangatho kunye noVavanyo – Ingqwalasela yeNkonzo eSour
Umbhobho ogqunywe nge-X65MS+Incoloy 825 uvavanywa ngokungqongqo ukuqinisekisa ukuthembeka kwenkonzo emuncu.
| Uvavanyo | Indlela / Umgangatho | Ububanzi | Ukwamkelwa |
| Ikhemistri kunye nobunzima (umqolo) | I-OES + HV10 | Ubushushu ngabunye | I-X65MS spec; ubunzima ≤248 HV |
| Ukuqina (ukugquma) | HV10 | Ibhetshi nganye | ≤240 HV |
| I-Bond UT | Umzimba opheleleyo, amaza okucheba kunye namaza ajikelezayo | 100% | Akukho disbond >50mm; iyonke <2% |
| Umthungo we-Weld UT | Uluhlu oluzenzekelayo olunezigaba | 100% | I-API 5LD / DNV F101 |
| I-Weld MT / PT | I-magnetic particle / idayi egqobhozayo | Isiqalo sokuqala se-Weld, ubude obupheleleyo | Akukho zibonakaliso ezithe ngqo |
| Uvavanyo lokuThatha nokugoba | I-Transverse weld + i-bond shear | Ngebhetshi nganye (≤50 imibhobho) | Ukusilela ngaphandle kwe-weld / bond |
| Impembelelo yeCharpy (ukuxhaswa) | -20°C okanye -40°C | Ngobushushu ngabunye | ≥100 J umyinge |
| Uvavanyo lwe-SSC (ukuxhaswa) | Indlela ye-NACE TM0177 A (yokutsalwa) | Ngobushushu ngabunye/ngeprojekthi nganye | Akukho kuqhekeka kwi-80% SMYS |
| Uvavanyo lwe-HIC (ukuxhaswa) | I-NACE TM0284 | Ngobushushu ngabunye/ngeprojekthi nganye | I-CLR ≤15%, i-CTR ≤5%, i-CSR ≤2% |
| Uvavanyo lwe-hydrostatic | Uxinzelelo loyilo lwe-1.5 × | Umbhobho ngamnye | Akukho kuvuza |
| Ubukhulu kunye nokubonakalayo | I-laser / ii-calipers / ezibonakalayo | 100% | OD, WT, ubude, i-bevel |
Uvavanyo olongezelelweyo xa luceliwe:
● Ukumelana nokugxunyekwa kwe-pitting (CPT / CCT) ye-Incoloy 825
● Ukugqwala kwe-intergranular (ASTM A262) kwi-weld overlay
● Umthamo weFerrite (wesinyithi esitshixiweyo)
6. Izicelo eziqhelekileyo kunye namava eprojekthi
6.1 Ukuqokelela igesi kwi-Onshore High-H₂S
Indawo:ISichuan Basin, eTshayina (H₂S 8-15%, CO₂ 5-8%, iikloride ziphakathi)
Inkcazo yombhobho:I-X65MS+Incoloy 825, OD 323.9mm, Ubunzima obungasemva yi-14.3mm, i-cladding yi-2.5mm
Injongo yobomi benkonzo:Iminyaka engama-30. Ibonelelwe nge-47 km ukuya kwi-NOC enkulu. Isebenza ukusukela ngo-2019 – akukho monakalo unxulumene nokugqwala.
6.2 Umgca wokuhamba kwe-Acid Gas Injection (AGI)
Indawo:Unxweme oluseMbindi Mpuma (H₂S + CO₂ + iikloride eziphezulu)
Umngeni:Isigaba samanzi ajiyileyo siyabola kakhulu.
Isisombululo:Umbhobho ogqunywe nge-X65MS+Incoloy 825, OD 406.4mm, ugqunywe nge-3.0mm.
Isiphumo:Ifakwe njenge-topside-to-wellhead flowline; iphumelele i-NACE TM0177 kunye ne-TM0284 qualification.
6.3 Umgca Wokutya Kwezityalo zeClaus (Inkonzo Yesalfure Yezinto Ezisisiseko)
Indawo:Umzi-mveliso wokucoca iGulf Coast, eMelika
Ingxaki:I-sulfur engamanzi kunye ne-HCl enomkhondo ibangele uhlaselo olukhawulezileyo kwintsimbi yekhabhoni.
Isisombululo:Umbhobho ogqunywe nge-X65MS+Incoloy 825 (12″ OD, 2.8mm cladding).
Isiphumo:Iminyaka esi-8 ndisebenza ngaphandle kokonakala kwe-liner okanye intsimbi engasemva.
7. Kutheni Ufanele Ukhethe Intsimbi Yombhobho Weengubo Ezithambileyo?
| Isizathu | Iinkcukacha |
| Ikhethekileyo kwizinto ezimuncu | Amava amaninzi okufumana ipleyiti ye-X65MS enobunzima obuphantsi kunye ne-Incoloy 825 |
| Ubuchule be-NACE bangaphakathi | Iqela leengcali lingalungiselela amaxwebhu apheleleyo okuthobela imithetho ye-NACE |
| Ukulandeleka ngokupheleleyo | Ukususela kumanani obushushu omabini la maleko ukuya kuvavanyo lokugqibela lwe-hydro |
| Ixesha elifutshane lokufumana umvuzo | Iiveki ezili-12-16 zobukhulu obuqhelekileyo (phinda iiodolo zeeveki ezili-10-12) |
| Imvume yehlabathi yomntu wesithathu | Sebenza ne-DNV, i-BV, i-TÜV, i-SGS ekuhlolweni kwamangqina kunye nezatifikethi ze-3.2 |
| Amaxabiso akhuphisanayo | Ngaphantsi ngama-40-60% kune-solid Alloy 825 okanye i-Inconel 625 pipe |
8. Imibuzo Ebuzwa Rhoqo (Imibuzo Ebuzwa Rhoqo)
Umbuzo 1: Yintoni umahluko phakathi kwe-X65 kunye ne-X65MS?
A: I-X65MS lutshintsho "lwenkonzo emuncu" lwe-X65. Inekhabhoni ephantsi (≤0.10%), isalfure ephantsi kakhulu (≤0.002%), ulawulo lobunzima oluqinileyo (≤248 HV), kunye novavanyo oluyimfuneko lwe-SSC/HIC ngokwe-NACE MR0175. I-X65 eqhelekileyo ayifanelekanga kwi-H₂S emanzi.
Umbuzo 2: Kutheni usebenzisa i-Incoloy 825 endaweni ye-316L okanye i-duplex kwinkonzo ye-sour?
A: I-Incoloy 825 ine-nickel ephezulu (38-46%), enika ukumelana okuhle kakhulu ne-SCC kunye ne-SSC ebangelwa yi-chloride. Ikwamelana nokunciphisa ii-asidi (umz., i-HCl) kunye ne-elemental sulfur - iimeko apho i-316L kunye ne-duplex ziya kusilela. Kwinkonzo emuncu kakhulu (i-H₂S ephezulu + ii-chloride eziphezulu + i-elemental S), i-Incoloy 825 idla ngokuba yi-CRA encinci eyamkelekileyo.
Umbuzo 3: Ngaba i-Incoloy 825 cladding inokudityaniswa yodwa okanye kwi-carbon steel?
A: Ewe. I-Incoloy 825 inokudityaniswa yi-GTAW (TIG), i-GMAW (MIG), kunye ne-SMAW. Ukuze udibanise i-cladding kwi-cladding, sebenzisa i-filler metal Alloy 82 / 82i (ERNiCr-3) okanye i-Alloy 625 (ERNiCrMo-3). Ukuze udibanise i-cladding kwi-carbon steel (umz., i-weld overlay), sebenzisa umaleko ophakathi we-Alloy 309L okanye i-625 ukuze uphephe ukuqhekeka nokuqhekeka.
Umbuzo 4: Ngaba i-longitudinal seam weld ikwayinkonzo emuncu?
A: Ewe. I-inner pass idityaniswe nge-Incoloy 625 filler (i-Ni ephezulu, i-Cr, i-Mo kune-825). Le weld overlay inika ukumelana nokugqwala okulinganayo okanye okungcono kune-825 cladding. I-weld iyonke ihlolwe yi-100% NDT kwaye ubulukhuni buvavanyiwe.
Q5: Zeziphi iziqinisekiso ezibonelelwayo ngenkonzo emuncu?
A: Sikhupha izatifikethi ze-EN 10204 Type 3.1/3.2 eziquka uhlalutyo lobushushu bentsimbi engasemva, ubulukhuni, iingxelo zovavanyo lwe-SSC kunye ne-HIC (ukuba zenziwe), kunye nophando lobulukhuni be-weld. Xa siceliwe, sinikezela ngeleta yokuthobela i-NACE MR0175.
Umbuzo 6: Lingakanani ixesha eliqhelekileyo lokuqalisa ipayipi egqunywe nge-X65MS+Incoloy 825?
A: I-odolo yokuqala: iiveki ezili-14-18 (kubandakanya ukuthengwa kwezinto zenkonzo emuncu kunye neziqinisekiso). Ii-odolo eziphindayo: iiveki ezili-10-12. Ukuhlolwa komntu wesithathu kunokongeza iiveki ezi-1-2.
Umbuzo 7: Ngaba iWomic Steel ingabonelela ngepayipi evaliweyo ye-Inconel 625 endaweni ye-Incoloy 825?
A: Ewe. Kwiimeko ezinzima ngakumbi (ubushushu obuphezulu, i-H₂S ephezulu, ii-chloride eziphezulu), sinikezela ngepayipi egqunyiweyo ye-X65MS+Inconel 625 (UNS N06625). I-Inconel 625 inamandla aphezulu kwaye inamandla okumelana nemingxunya engcono (PREN >45). Qhagamshelana nathi ukuze ufumane iphepha ledatha elahlukileyo.
9. Ulwazi loku-odola – Inkonzo emuncu iClad Pipe
Ukucela ikowuteshini yeUmbhobho ogqunywe ngentsimbi ye-X65MS+Incoloy 825 bimetal obotshelelwe ngentsimbi, nceda unikeze oku kulandelayo:
● Ububanzi obungaphandle (OD) kunye nobukhulu bodonga lwentsimbi engasemva
● Ubukhulu be-Incoloy 825 buyafuneka (ubuncinane yi-2.0mm ecetyiswayo kwigesi emuncu)
● Ubude obupheleleyo (m) kunye nenani lamalungu
● Uxinzelelo loyilo / imfuneko ye-SMYS (ukuba ikhona)
● Indawo yenkonzo emuncu: Uxinzelelo olungaphelelanga lwe-H₂S, i-CO₂, iikloridi, i-pH, ubushushu
● Uvavanyo lwe-NACE olufunekayo: i-SSC (iNdlela A okanye i-C), i-HIC – okanye ukuthobela i-NACE MR0175/ISO 15156 epheleleyo
● Iimfuneko zokuhlolwa ngumntu wesithathu
Qhagamshelana neWomic Steel:
Iwebhusayithi: www.womicsteel.com
I-imeyile: sales@womicsteel.com
Ucingo / WhatsApp / WeChat:
UVictor: +86 15575100681
UJack: +86 18390957568
I-Womic Steel – Iqabane lakho lezisombululo zepayipi ezifakwe i-clad ezithembekileyo.
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