API 5L X65 LSAW Bututun Karfe: Ƙarfin Masana'antu & Bayanin Samfura

Me yasa Womic Steel don X65 LSAW?

● Tsarin UOE yana isar da ±0.2% zagayen OD - yana da mahimmanci ga juriya ga rugujewar ruwa mai zurfi

● Sabis mai tsami wanda aka ba da takardar shaida tare da ƙarfin HIC/SSC da PWHT

● Tasirin ƙarancin zafin jiki zuwa -60°C da gwajin CTOD don injinan karaya

● Yarda da API 5L Monogram + DNV don ƙasashen waje

● Sama da kilomita 1,200 na bututun X65 da ake samarwa a duk duniya

● Dubawa ta ɓangare na uku ta DNV, ABS, BV, SGS, TÜV

Tambayoyin da Ake Yawan Yi:

T: Menene bambanci tsakanin X65 da X60 na bututun mai na ƙasashen waje?
A: X65 yana ba da ƙarfin yawan amfanin ƙasa da kashi 8% (450 vs 415 MPa), wanda ke ba da damar ganuwar ta yi ƙanƙanta kaɗan. Don zurfin ruwa (≥ 1,000m), galibi ana fifita X65 saboda ingantaccen juriyarsa ga rugujewa da aikin gajiya. Duk da haka, X65 yana buƙatar ƙarin tsauraran hanyoyin walda kuma yana da sauƙin kamuwa da fashewar hydrogen. Don zurfin ruwa ƙasa da mita 500, X60 na iya zama mafi arha.

T: Za ku iya samar da gwajin CTOD na X65 ga masu hawa jiragen ruwa a ƙasashen waje?
A: Eh. Muna yin gwajin CTOD bisa ga BS 7448 ko ASTM E1820 a yanayin zafi da aka ƙayyade (yawanci -20°C ko -46°C). Mafi ƙarancin ƙimar CTOD: 0.25mm don ƙarfe na walda, 0.30mm don HAZ. Mun samar da X65 da aka gwada ta CTOD zuwa北海da ayyukan ƙasashen waje na Kudu maso Gabashin Asiya.

T: Menene matsakaicin kauri na bango don bututun X65 LSAW?
A: JCOE/UOE matsakaicin 50.8mm, farantin da aka naɗe guda ɗaya har zuwa 70mm, farantin da aka naɗe biyu har zuwa 80mm. Don kauri daga bango sama da 50.8mm, PWHT ya zama dole. Kwanan nan mun samar da bututun X65 1,016mm OD × 60mm WT don bututun CO₂ mai matsin lamba mai yawa.

T: Ta yaya kuke tabbatar da ƙarfin HAZ don walda filin X65?
A: Muna sarrafa sinadaran faranti (ƙarancin CEV, ≤ 0.40%), shigar da zafi yayin SAW (≤ 2.5 kJ/mm), da zafin shiga tsakani (≤ 200°C). Muna ba abokan ciniki shawarwari kan cancantar tsarin walda (WPQ) kuma muna iya samar da samfuran da ake amfani da su wajen walda. Matsakaicin tasirin HAZ Charpy a -20°C: 120-200J.

T: Shin X65 ya dace da amfani da tsami (H₂S)?
A: Haka ne, amma yana buƙatar PSL2 tare da ƙarancin CEV (≤ 0.40%), PWHT don duk kauri na bango ≥ 20mm, tauri ≤ 85 HRB, da gwajin HIC/SSC. Womic ta samar da sabis na tsami X65 ga Gabas ta Tsakiya (30 ppm H₂S) da Kanada (mai tsami).

T: Menene lokacin jagora na yau da kullun don bututun X65 LSAW?
A: Daidaitaccen X65 PSL1: Kwanaki 40-55. X65 PSL2 tare da ruwan tsami da PWHT: Kwanaki 60-80. Umarnin gaggawa (kwanaki 30-45) idan akwai tan 2,000 idan faranti suna cikin kaya.

Nassoshi Kan Aikin - Bututun Fitar da Iskar Gas Mai Zurfi Na Tekun Arewa

Ƙasa:Norway (Tekun Arewa, yankin filin Balder)
Daidaitacce & Matsayi:API 5L X65 PSL2 tare da sabis mai tsami da buƙatun CTOD
Girma da Adadi:

● OD 610mm (24″) × WT 22.2mm – mita 28,000 (kimanin tan 9,200) wanda aka ƙera ta hanyar tsarin UOE

● OD 610mm (24″) × WT 25.4mm – mita 6,000 (kimanin tan 2,300) wanda tsarin UOE ya ƙera (bango mai kauri don sashin hawa)

● OD 813mm (32″) × WT 30.0mm – mita 4,000 (kimanin tan 2,500) wanda aka ƙera ta hanyar dinkin farantin da aka naɗe shi ɗaya (don kusanci bakin teku)
Jimilla:Mita 38,000 (kilomita 38), kimanin tan 14,000

Bayani dalla-dalla:Rufin 3LPP na waje (ƙanshin kauri 3.5mm) don aikin zafi mai yawa (110°C), ƙarshen da aka yanke 30° / 1.6mm fuskar tushen tare da kariya daga bakin ƙarfe, gwajin hydro a 22.5 MPa (matsin lamba na ƙira 17.0 MPa). Tasirin Charpy da ake buƙata a -20°C (minti 50J, an cimma 120-200J) da kuma a -46°C (minti 27J, an cimma 80-150J). Gwajin CTOD a kowace BS 7448 a -20°C - karɓa: ƙarfe mai walda ≥ 0.25mm, HAZ ≥ 0.30mm. HIC a kowace NACE TM0284 (Magani A, 96h) - karɓa: CLR 0%, CTR 0%, CSR 0%. SSC a kowace NACE TM0177 - babu tsagewa. An yi amfani da PWHT ga duk bututu saboda aikin tsami. 100% UT tare da TOFD da cikakken jiki UT (ba kawai dinki ba). Duba DNV na ɓangare na uku a duk lokacin samarwa.

Aikace-aikace:Bututun fitar da iskar gas mai zurfi daga filin Balder (zurfin ruwa mita 800-1,200) zuwa tashar karɓar iska a cikin teku a Norway. Bututun mai tsawon kilomita 38 ya haɗa da sashin hawan dutse mai ƙarfi (kilomita 2, 25.4mm WT) da kuma hanyar zuwa bakin teku ta cikin ƙasa mai duwatsu (kilomita 4, farantin WT mai girman milimita 30).

Kalubalen Fasaha da Magani:

● Juriyar rugujewar ruwa mai zurfi– Zurfin ruwa har zuwa mita 1,200 yana sanya matsin lamba na waje na 12.5 MPa. Bututun UOE mai girman 24″ × 22.2mm da ake buƙata don biyan matsin lamba na rugujewa ≥ 25 MPa (ma'aunin tsaro na 2). Bututun UOE da aka samar a cikin mahaifa suna da siffar ovality ≤ 0.2% (an auna a 0.15-0.18%) da kuma ragowar damuwa ≤ 35% SMYS. Mun yi nazarin abubuwa masu iyaka (FEA) akan sigogin masana'antu kuma mun tabbatar da gwajin matsin lamba na rugujewa akan samfuran cikakken sikelin guda biyu (an cimma 28.5 MPa da 29.2 MPa).

● Sabis mai tsami tare da babban H₂S– Iskar gas ɗin tana ɗauke da 50 ppm H₂S a zafin aiki na 90°C. An zaɓi ƙananan carbon (C ≤ 0.07%), ƙananan manganese (Mn ≤ 1.40%), ƙananan sulfate (S ≤ 0.002%) faranti tare da maganin calcium. An kiyaye CEV a 0.35-0.38%. An yi amfani da PWHT ga duk bututu (jike 600°C ± 10°C, riƙe awanni 1.5). Tauri bayan PWHT: ƙarfe mai tushe 78-84 HRB, walda 82-86 HRB, HAZ 80-84 HRB. Gwaje-gwajen HIC da SSC sun wuce ba tare da fasa ba.

● Taurin karyewar CTOD don tayar da shi– Sashen riser mai ƙarfi yana buƙatar ƙarfin karyewa mai yawa don jure nauyin raƙuman ruwa. Womic ta yi gwajin CTOD akan ƙarfe na walda da HAZ a -20°C. Sakamako: ƙarfe na walda 0.35-0.55mm (ana buƙatar ≥ 0.25mm), HAZ 0.40-0.70mm (ana buƙatar ≥ 0.30mm). Mun kuma yi ƙaramin zafin jiki Charpy a -46°C (matsakaicin 110J). DNV ta shaida duk gwajin CTOD.

● Rufin zafi mai yawa (3LPP)– Zafin aiki 90°C, tare da kololuwar 110°C yayin rufewa. Matsakaicin 3LPE (polyethylene) yana da iyaka zuwa 80°C. Rufin 3LPP (polypropylene) da aka shafa a cikin mahaifa tare da kauri 3.5mm (layin saman 2.5mm + manne 0.5mm + FBE 0.5mm). Rufin ya wuce gwajin raba cathodic a 110°C (radius na raba ≤ 8mm bayan kwana 28). Ƙarfin barewa a 110°C wanda aka auna a 60 N/cm (mafi ƙarancin 50 N/cm).

● Juriya mai girma don shigarwa na shimfidar reel– An sanya bututun ta amfani da hanyar shimfida reel-lay (bututun da aka ɗiba a kan jirgin reel). Wannan yana buƙatar sarrafa ovality mai ƙarfi (≤ 0.2%) da tsayin ƙarfafa walda ≤ 0.5mm. Tsarin UOE na Womic ya sami ovality 0.15-0.18%. Mun niƙa murhun walda zuwa tsayin ≤ 0.3mm. Duk bututun sun wuce gwajin "reelability" na musamman: zagaye 10 na spooling ba tare da fashewa ba.

● Kayan aiki zuwa Norway– An jigilar bututu daga Shanghai zuwa Stavanger, Norway ta hanyar jirgin ruwa mai fashewa (na musamman mai ɗaukar bututu). Mashigar Tekun Arewa ta Lokacin Sanyi ta buƙaci marufi na hana danshi. Womic ta yi amfani da jakunkunan VCI (mai hana lalata tururi) da kuma kayan wanke-wanke na silica gel a cikin murfin ƙarshe. Duk tan 14,000 sun iso ba tare da tsatsa ko lalacewar rufi ba.

Sakamako:An shigar da bututun fitar da iskar gas na filin Balder a kwata na uku na shekarar 2024. Shigar da bututun mai (wanda wani babban ɗan kwangila daga ƙasashen waje ya yi) ya ba da rahoton cewa babu wata matsala a cikin bututun ko kuma katsewar dinkin walda yayin da ake yin amfani da shi da kuma tura shi. Duk kilomita 38 sun wuce gwajin matsin lamba a kan teku. Abokin ciniki (babban ma'aikacin Norway) ya ba da "Kyautar Aiki ta Mai Kaya" ga Womic Steel, yana mai lura da "ingantaccen daidaiton girma da sakamakon CTOD." Womic yanzu ta zama mai samar da kayayyaki ga ƙarin ayyukan haɗin gwiwa guda biyu na Tekun Arewa.

Tuntuɓi:
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Imel: sales@womicsteel.com

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Womic Steel – Abokin hulɗarka mai aminci ga bututun API 5L X65 LSAW don bututun ruwa mai zurfi a bakin teku, layukan bututun iskar gas mai matsin lamba, sabis mai tsami, da aikace-aikacen arctic a duk duniya.