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NGHIEN CUU-TRAOOOl NGHIEN CCrU THiiT K^ CHI TI^T K^T CAU MAN CCiA THAN GIAN KHOAN i g NANG TAM OAO 03 THE DETAILED DESIGN OF THE SIDE SHELLS ON THE HULL OF TAM DAO 03 JACKUP RIG KS D4o D Khidm, KS Ngnyin Hihi D§ Cdng ty Cd phin Chl t^o Gian khpan Diu Bdi bdo gidi thiiu phuang phdp tinh todn ly thuyit theo tieu chudn AISC, bgo gdm tinh todn phdn life tdc dung, kiim tra ling sudt cdt, ung sudt udn, ung sudt kit hgp vd kiim tra dg vong ddm; ddng thdi trinh bdy edc kit qud kiim nghi$m sue bin dua tren kinh nghiim theo tieu chudn ABS MODU thiit ki chi tiit kit cdu mgn cua thdn gidn khoan tu ndng Tam Ddo 03 Tir khda; Tteu chudn cda Viin kit cdu thep xdy difng A^AISC, tiiu chudn cua ca quan ddng kiim M cho gidn khoan di ddng ABS MODU, thdn gidn khoan tu ndng ABSTRACT The purpose of this article is to introduce the theoretical calculation method of AISC standard, including reaction calculation, shearing stress check, bending stress check, combined stress check and deflection check The results of experienced strength check, based on the ABS MODU standard, applying for the detailed design of the side shells on the hull of Tam Dao 03 jacku rig are also presented Keyword: AISC standard (American Institute Cf Steel Construction), ABS MODU standar (ABS Rules for Building and Classing Mobile Offshore Drilling Units), hull of Jackup rig MO DAU Thee quydt dinh sd 522/TTg - DK 7/4/2008, Thll hrdmg Chinh phu da dira gian khpan t\i nang vap danh sach cic du an thupc Chuong trinh Co trpng didm Qu6c gia Dd tai "Nghidn ciiu thiet ke ehi tiet va edng nghd chl t^p thdn gidn khpan tjr nang 90m nudc", 14 dd tai nghien cihi khoa hpc cip Nhd nudc thudc D\r dn khpa hpc vd cdng nghd (KH&CN): "Nghidn ciiu thiet ke chi tidt va cdng nghe ehd tap, lap rap va thuy gian khoan tu nang d dp sau 90m nudc phi hpp vdi didu kien Viet Nam" Dupe lap thep Quydt dinh sd 463/QD-BKHCN, vd vide phd duydt thuydt mmh tdng qudt du dn KH&CN, Bd trudng Bp KH&CN ky 02 thang 04 nam 2010 Qua han ndm thuc hipn, dd tai da dat dupe nhung kdt qua rit ddng khich lp gdp phin vao cdng chung cua du dn ddng mdi gidn khoan tu nang 90m nudc diu tien tai Viet Nam TAP CHl CO KHJ VlfiT NAM • Sd 10 (Thdng 10 nam 2012) Q I NGHIEN cufu - TRAO OOl GI61 THIEU VE GIAN KHOAN TV'NANG gidng khoan VA T H A N G I A N KHOAN TU NANG 2.1 Gidn khoan tir nang Gian khoan tu nang la kieu thdng dung nhit hp gian khpan di ddng (chidm 60% tdng sd gidn khcan di ddng) U'u diem ndi bat ciia gidn khpan tu nang la kdt hop hai hda giira tinh hpat ddng da chiic nang va tinh hidu qua van hdnh cdc tdc nghidp vung nudc cd dp sau dudi 150 met nudc, nhu khoan tham dd, khoan khai thac vd siia midng Gidn khoan tu nang Tam Ddo 03 Id giai khoan dupe thidt kd, chd tao dua trdn mluLTI Supper 116E ciia cdng ty Le Teumeau Technologies Inc, (My) Thdn gidn cd dang tan gidc dat tren 03 chdn hinh vudng Tcdn^^ than gidn dupe nang, nhd cdc dpng cp di^n thdng qua cac cum ca cau truyen ddng banh rang - rang dat tren mat bopng Mlu gian dupe thidt kd de cd thd hdat ddng ddO sau 90m nudc, chiu dupe tdc dp gid ISOkm/h vd cd khd nang khpan sau tdi 6.000m Ddm chia Ch.Tii 2i.an Hinh Mdu gidn khoan tif ndng LTI Supper 116E 2.2 Than gidn khoan tu- nang Than gian khoan la kdt edu Udn tuc dang tim vd vd cac kdt ciu gia cudng vd, gift cho tpdn bd gian khpan ndi tren nudc di chuydn, dam bdc du Cling vung nang tcdn bp trpng lupng gian ttpng qua trinh vdn hdnh khoan, tham dd Kdt ciu than gian cd thd chia cdc nhdm kdt ciu lien ket vdi nhau, cd dang kdt ciu tim vd mdng va cdc nep gia cudng lidn kdt vdi thdnh cdc khung phdng hoac khung ttong khdng gian ba chidu TAP CHi CO KHi VI$T NAM Hinh Mo hinh 3D kit cdu thdn gidn khoan tif ndng Tam Dm Sd 10 fThdnff 10 nam 20191 NGHIEN CUU-TRAOeOl Cac kh cSu vach, man, boong chinh, boong dang, day dudi, da ngang hd la cac ket cau chinh dugc Ii§n k6t vdi tao nen than gian va phan chia thSn g i ^ cac khoang ket (chiia diu, dung dich, nudc), budng may, nh^ xudng bao dudng, khu vuc nha d (boong dang) de phiic vu nhu clu smh sdng, lam viSc eua e kip v | n hanh gian khoan Cac kit cau phy (be dd thigt bi, he thdng cSu true, cot chdng ) dugc thilt k l va bd tri cac budng may d6 ho trg lap dat eae thiet hi (bS dd thilt bi), hd trg cho viee bao dudng thilt bi ldn (he thdng pal^ig lap trSn cau tryc budng may phat, borm bun), hay lap dat cac nha kho phuc vu eho viec sua chua, di chuyen cac thiSt bi n^ng, hay lap dat tren mat boong de hd trg viec vSn chuyen ngudi, thiet hi qua trinh van hanh gian khoan va nhan tiep te tu cac tau djch vu THifiT K E CHI T I E T KET CAU M ^ vdi vdi bd tri ben ngoai cua gian khoan nham dam bao ben ciing nhu tinh kinh te va tinh tham my 3.2 Xac dinh cac trang thai thiet k l • Di chuygn tur noi den noi khac (Transit condition) • Trang thai nang/ chSn gian khoan de chuygn hJr trang thai ndi sang trang thai chdng chan xudng dung trgn day bign va ngugc lai (Installation/ retrieval condition) • Trang thai van hanh gian khoan d mdt vi tri dung tren day biln va thuc hien cac boat ddng khoan (Operating condition) • Trang thai tdi ban (Survival condition) 3.3 Du- lif u dau vao dung d^ thilt k l ket cau man • Bd tri chung ciia gian khoan: Nghien cihi thiet ke chi tiet ket cau man cua than gian khoan tu nang Tam Dao 03 la mdt sd 53 ehuySn dh nghi6n euru cua dd tai nghign cum khoa hoc cap nha nude "Nghien cmi thiet ke chi tiet va cdng nghe che tgo than gian khoan tir nang 90m nudc" Man gian khoan la mpt nh&ig h6 ket cSu rat quan cau ngn than gian khoan Chiing vua chiu ap Iuc nudc ben ngoai vvra chiu ap lire chat long chiia cac ket cua gian khoan Vua la noi bat dlu va ciing la nai kit thuc cda he thdng ket can gia cudng ben than gian khoan gin lien vdi nd (da ngang, sudn, vach) Kich thudc va hinh dang ciia man phii thupc vao chung loai, tinh nang cua tung Ioai gi^n khoan khac Tuy timg chung l o ^ va tinh nang cda gian khoan ma chiing ta se cd nhiing thilt kl bd tri kh^c Hlnh 3: Mat chieu dung ben ngodi thdn gidn (Outboard profile) • Dfl heu tai mdi tnidng: + Tai gid: Tinh toan ap suSt gid (P) theo tigu chuan ABS (Mobile Offshore Drilling Unit 2012): P=fKC^C, Nim' Ket cau khung gi^n man se phai phii hgp T ^ P CHf CO KHf VlfiT NAM • Sd 10 (Thdng 10 nam 2012) NGHIEN CIJfU-TRAOOOl Ia phin tilp xue true tilp vdi nudc bign, chiu ap thuy tioh tii ben ngoai Trong dd: F = 0.611 Vk = V^n tdc gid tmh bang m/s Ch = He sd anh hudng chilu cao Cs = Hg sd anh hudng hmh dmig • He dim va nep gia cudng ben cd tac dwi^ tang Cling cho tdn mgn dl chiu dugc dp l\rc thuy tinh ciia nudc biln ben ngoai - Tinh toan luc gid (F) tae dung lgn bl mg-t: F = PA Trong dd: F = Luc gid tic dung len bl mat, tinh bing N P = Ap suit gid, tinh bang N/m2 A = Dien tich mat hiing gid, tinh bing m2 + Tai trpng sdng biln: - Vigc xac dinh tai trpng sdng phai dira tren nhiitig tinh toan da dugc chip nhan, nhiing phep thu tren md hinh hoac kdt qua cua viec ludng thuc tl Ddi vdi cac ket cau dugc cau t^o tir cdc phin di manh it bi anh hudng bdi trudng sdng biln, cd thi dung phuomg phap kinh nghigm nhu phuang trinh Morison dg tinh toan Ddi vdi cdc kit cau khac chiu anh hudng nhigu eua trudng sdng, phuang phap nhigu xa dugc sir dung de tinh tai trpng sdng bien - Phuang trinh Morison ap dung cho cac ket cau dang manh cd dudng kinh (hoac dudng kinh tuong duong quy ddi vdi cung didn tich mat clt ngang theo phuang song song vdi ddng chay) nhd hon 20% cua chidu dai sdng dang x6t va la nhd so vdi khoang each giiia cac phan tu ket cau Hlnh 4: Md hinh ket cdu mgn Vi?c tinh chpn chilu day tdn man cung nhu kich thudc khung xuong gia cudng dugc thyic hign theo phuang phap: • Tinh chpn kit clu man dua trgn cdng thiic kinh nghi?m theo tigu chuin ABS MODU Code 2012 • Tmh toan dua trdn ly thuylt siic ben theo tieu ehuln AISC R R R , ,1, 1,11 lln ^^ \\\\ + Cac yeu td tac dpng khae: -Ygutd nhiet dp - Dp am, dp man cua nudc biln - Tu trpng, cac tai trpng chiic nang Hinh 5: Sa tdi len song doc mgn (trdi) vd sudn (phdi) Trong dd: 3.4 Tinh toan thiet ke khung gian man R = P h ^ l\lc ccf cau ngang len co cin dpc vi ngUgc lai, N MEUI gdm phan: y = Trpng liiOng rieng cua ntfdc, kg/m^ d = Chieu chim trung binh cua tau, m Tdn man (side shell plate): toan bd tim man D - Chieu cao man, m T ^ CHf CO KHf VlfiT NAM Sd 10 (Thane 10 nam 2012) NGHIEN CUTU - TRAO D I Sau k i l m tra dp bdn ket cau dan man dudi dang he dam don gian thi tien hanh md hinh hda dan man vao md hinh tdng the toan gian; dat tai trpng va sii dung p h u a n g phap p h i n tir hiim ban dg phan tich dd ben Ap Iuc thuy tinh trung binh cCia nudc Ien cac tdng t h i toan gian va tidn hanh Iua chpn cac nut lien ket cho phii h g p eo cau nhu sau: I - Khoang cdch vach, m b - Chilu r$ng mdi than, m a - KhoSng c ^ h sudn, m c - Khoang each sdng dpc, m K E T L U A N - Len sdng dpc man, N/m: p, = 7.(D-d/2).c - Len sudn, N/m: pj = Y.d.a Dya tren cac tai trpng xac dinh ben tren tien hanh tinh toan kiem tra dp ben ket cau man dua trgn tieu chuan AISC theo cac thdng sd sau: D I tai da Iam chu dugc viec tinh toan t h i l t kg chi t i l t cho cac ket cau than (cac kgt qua tinh toan thiet ke chi tiet ket c l u than duge CO quan Dang kiem My phg duyet), tao su tu chii ve khoa hpc va edng nghe ITnh vuc ddng mdi gian khoan di ddng gdp p h i n vao viee c h l tao cdng gian khoan tu nang 90m nudc Tam Dao 03 dau tign tai Viet Nam • Ngay nhan bai: 25/8/2012 • Phan Iuc (reactions) Ngay phan bien: 08/9/2012 • Kilm tra ling suit cat (shearing stress check) NguM p h a n bien: PGS, TS N g u y i n VSn Dy, • Kiem tra ling suat udn • Kigm tra ling suit kit hgp (combined stress check) Trudng Dai hpe Ky thuat Cdng nghi?p, Dai hpc Thai Nguygn • Kilm tra dd vdng (deflection check) TM Ii|u tham khao: [1] Ban ve thilt kl co sd (basic design) Gian khoan tu nang 90m nudc Cdng ty LeToumeau (My) lap Uong giai doan 2009-2010 [2] Bdn vg thilt kl Gian khoan tv nang 90m nudc PV Shipyard lap giai doan 2009-2010 [SJ ABS Rules for Buildmg and Classing Mobile Offshore Drilling Units (2008), American Bureau of Shipping, 2008 [4] Subrata K Chakrabarti, Hand book of oiFshore engineering, 2005 [5] Tieu chuin AISC (American Institute Of Steel Constmetion), AISC ASD Manual 9th Edition [6] De tii nghien eiiu khoa hpc cap Nha nudc "Nghien cuu thiet ke chi tiet va cdng nghe che tao than gian khoan t^ nang 90m nude" TAP CHf C O KHf VlfiT NAM Sd 10 (Thang 10 nam 2012) ... ddng da chiic nang va tinh hidu qua van hdnh cdc tdc nghidp vung nudc cd dp sau dudi 150 met nudc, nhu khoan tham dd, khoan khai thac vd siia midng Gidn khoan tu nang Tam Ddo 03 Id giai khoan dupe... 90m nudc" Man gian khoan la mpt nh&ig h6 ket cSu rat quan cau ngn than gian khoan Chiing vua chiu ap Iuc nudc ben ngoai vvra chiu ap lire chat long chiia cac ket cua gian khoan Vua la noi bat... OOl GI61 THIEU VE GIAN KHOAN TV''NANG gidng khoan VA T H A N G I A N KHOAN TU NANG 2.1 Gidn khoan tir nang Gian khoan tu nang la kieu thdng dung nhit hp gian khpan di ddng (chidm 60% tdng sd gidn
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