304 Ung dung ky thuat dan dng thep mdt hoae hai ldp trong cdng tac sua chua Ion tnVG DUNG KY THUAT D A N ONG THEP MOT HOAC HAI LCfP TRONG CONG TAC SITA CHITA L O N GIENG KHOAN 6 XNLD VIETSOVPETRO Hoan[.]
304 Ung dung ky thuat dan dng thep mdt hoae hai ldp cdng tac sua chua Ion tnVG DUNG KY THUAT D A N ONG THEP MOT HOAC HAI LCfP TRONG CONG TAC SITA CHITA L O N GIENG KHOAN XNLD VIETSOVPETRO Hoang Qudc Khanh, Nguyin Van Tuyen Cao My Lgi, Nguyen Van DQng XNLD Vietsovpetro Cao Ngge Lam Trudng Dgi hpc Md - Dia cliat TOM TAT Qud trinh khoan, khai thde vd ddc biet thuc hien sua chira ldn giing khoan thudng gdy hu hgi cpt dng chdng khai thde a cdc muc dp khdc Sd lieu thdng ke tinh trgng ky thudt cpt dng chdng khai thde [1, 8] a mpt sd giing khoan khai thde a XNLD Vietsovpetro (Bdng 1) cho thdy rdng: Phdn phirc tgp chii yiu (chiem tdi 80% sd gieng khoan cd cdc phuc tgp khdc qud trinh nghiin cim) lien quan din hien tugng mdn dng chdng keo thd vd xoay dung cu khoan, cdp dia vdt ly, xu ly axit via O nhiiu giing xdy mdn dng hdu nhu tren todn bp chiiu ddi Hien tugng thimg vd rdeh dng chdng, dirt dng chdng ciing nhu mdi mdn vd thiing ddu ndi chuyin tiip giira cdp dudng kinh dng chdng ciing thudng gap d cdc giing da tiin hdnh nhiiu ldn cdng tdc cuu su cd Ren dng chdng khai thde khdng kin ciing dugc phdt hien d hdng logt cdc giing khoan Bang 1: Tinh trang ky thuat 6ng khai thac d mot so gieng khoan cua XNLD Vietsovpetro STT Dang phuc tap 5*0 giing Ghi chit An mdn, an mdn nghiem trgng Bdp meo 18/35 Do nhieu nguyen nhan khae Thung va rach ong 8/49 Do cuu sy cd khae Hu hong dau ndi chuyen tiep 3/49 Keo tha, phay mai thdi gian dai Thiet bi tram tang khong kin 2/49 Thilt bi tram kilu MSC, PDM Dut va roi ong chong 1/49 Ong chdng 0178mm 28/35* Nhieu ong bi an mdn tren chieu d^i Ghi chii: * Tdng sd giing phirc tgp dugc dua nghiin ciru nguyen nhdn Thdng ke cung cho thay dng chdng dudng kinh 0140mm chiem ty le hu hai cao sd cac loai dudng kinh dng chdng 0194, 0178, 0168 va 0140mm dang dugc su dyng phd biin ciu tnic dng chdng khai thac d XNLD Vietsovpetro Do cac sy ed va phuc tap khae nhau, thyc tl nhieu gieng khoan d XNLD Tuyin tap bao cao Hgi nghj KHCN "30 nam Dau Viet Nam: Cff hgi mdi, thach thde moT' 305 Vietsovpetro hien khdng the tiep tuc tri qua trinh khai thac binh thudng, nhit la d cac gieng cd phuc tap lien quan den cdt dng 0140mm Nham dn dinh va tri san lugng khai thac dau, ddng thdi vin phai tuan thu diy du cac quy che an toan qua trinh khai md, tbi viec sua chua dng chdng khai thac, khdi phye kin, dam bao thdng gieng de tha cdt can khai thac va thiet bi ldng giing mdi dang dugc dat cap thiet bon bao gid bet cAC GIM PHAP CONG NGHE KHOI PHUC DO KIN ONG CHONG KHAI THAC Cac giai phap khdi phuc kin bien thudng ap dyng d tren the gidi la: - Bom tram ap suat vua xi mang vao eae vi tri hu hai, - Dan ep phu len doan khdng kin (doan dng hu hdng) bang dng thep dinh hinh cd bl day tu - 7mm, - Gan day, cac cdng ty hang dau tren the gidi da ung dyng giai phap dan dng khdng phai vat lieu thep ma la dng che tao tu vat lieu hdn hgp polime U'ng dyng dai tra cdng nghe phai chang se tao dugc mdt bude ngoat thyc sy viec sua dng chdng tren the gidi vi gia re, nhanh chdng, tien lgi? - Neu phan dng chdng bi hu hai cd kich thudc ldn, ap suat via cao thi giai phap bat bude la gia cd doan dng bang cdt dng chdng lung hoae bao phu doan bang cdt dng chdng cd chieu dai 100 - 200m Kinh nghiem ung dyng ky thuat dan dng thep cho thay rang, phuong phap sua dng chdng bang dan dng kim loai hau bet cac trudng hgp la giai phap cd trien vgng, kinh te va don gian hon ca Do vay, viec tim hieu ky cac uu the cung nhu nhugc diem cua cdng nghe dieu kien Viet Nam cho phep dua nhieu phuang an lya chgn giai phap sua gieng nham phye hdi va gia tang san lugng khai thac dau tu cac md dang khai thac d san lugng dinh va dang cd xu hudng giam san lugng KY THUAT SITA ONG CHONG B A N G CONG NGHE D A N ONG THEP DEVH HINH La ky thuat dugc nghien cuu va phat trien tu nhung nam 50 cua the ky trudc d Lien Xd cu Trong giai doan phat trien manh cd tdi vien toan lien bang cung tham gia nghien cuu va ung dyng ky thuat [6] cac nude phuang Tay, sy nhap cudc nghien cuu bat dau vao khoang nhung nam 1952 - 1956, cho den da cd khoang 10 cdng ty ldn cung tham gia phat trien ung dyng nhu Baker Oil Tool, Weatherford, Halliburton, Schlumberger, Enventure [6, 13 -^ 16, v.v ) Do cd tiem luc tai chinh ddi dao, kha nang nhanh chdng ung dyng cac tyu ky thuat mdi nhat ve vat lieu va cdng nghe vao thyc te nen d mdt sd hang da cd nhung bude phat trien vugt bae ITnh vyc sua ehua ong chdng bang ky thuat dan dng nhu Baker Oil Tool, Schlumberger, Eventure-USA, v.v Cdng nghe dan dng cung duge ung dyng rdng rai ddi sdng dan dyng de ghep ndi cac ket cau tu sat, tu nhdm, cac loai cua vao bing kim loai hay cac loai vat lieu cung khae bang each tan cac loai dinh dc bing nhdm hay thep khdng gi 306 il'ng dung ky thuat dan ong thep mgt hoae hai Idp cdng tac sda chQ-a ldn XNLD Vietsovpetro da ung dyng ky thuat dan dng vao viec sua chua d hang loat giing khoan vdi ket qua kha quan cho phep di den ket luan ring, day la cdng nghe can dugc ung dyng rdng rai ban nua d Viet Nam Ban chit cua cdng nghe la su dung dng thep cd tiet dien cat ngang dang mui khe -ggi tit la dng mui khe (Hinh 1) dugc bao phu be mat ngoai bang vat lieu lam kin, chung dugc tha vao giing khoan den noi dng bi hu hdng, sau dd bang thiet bi can chuyen dyng boat ddng theo nguyen tac co - thuy lyc (cac kieu dau bap ehudi - Hinh 2) dng mui khe dugc nong va dan ep chat vao dng chdng noi bu bai Hinh 1: Thay doi bien dang ngang cua ong thep tha, gian nd va ket thuc dan ong Hinh 2: Cac kieu c6n bap chu6i de dan ong thep (a, b va c - cac kieu dau bap ehudi dan ong co hgc; d - dau dan thuy luc dang cdn phing, e - diu thuy lyc dang dinh hinh; f - dau cdn ket hgp ca - thuy luc; g, h - dau bap ehudi thuy lyc) Tuygn tap bao eao Hdi nghj KHCN "30 nam Dau Viet Nam: Cff hdi mdi, thach thde mdi" 307 CAu TRUC, VAT LIEU vA PHtTONG TIEN CHE TAO ONG THEP MUI KHE Ong thep cd bien dang mui khe thye chat la de thu nhd dudng kinh ngoai cua ong tha vao gieng, sau dd dugc nong va can ep dinh vao dng chdng trudc bing phuong phap can lanh thdng qua dau bap ehudi thuy lyc Vdi myc dich tang kha nang lam kin dan ddng thdi each ly sy tiep xue tryc tiep gida be mat dng chdng va dng mui tranh an mdn dien cyc, nen be mat ngoai cua dng dugc bao phu bdi ldp vat lieu lam kin chuyen dyng O Lien bang Nga thudng su dyng cac loai vat lieu sau: - Thanh phan polime tren co sd hdn hgp Epoxy (ky bieu ED-5, ED-6), - Thanh phan edt tren co sd hdn hgp chat Nairita NT (tieu chuan TU 38-10518-77) Mac du hdn hgp polime tren co sd nhya Epoxy tuong ddi ben va tin cay de lam kin cac khe hd Id bgt hinh giua mat ngoai dng thep va mat dng chdng sau dan ep nhumg khdng tien lgi bao phu vi chung cd dac tinh ddng cung nhanh Do vay, hien d Lien bang Nga bude dau da thu nghiem va dua vao ung dyng loai vat lieu bao phu mdi nhu hdn hgp Maroli, vai thuy tinh [12, 92], v.v Tuy nhien, vat lieu bao phu ludn phai su dyng cac phy gia lam cham qua trinh ddng cung nhung loai hdn hgp thudng cd phat tan cao, kha nang chiu nhiet chi tdi 120°C nen hien cac trung tam nghien cuu tren the gidi dang nd lyc tim kiem nhiing loai vat lieu mdi dn dinh, ben va an toan ban cho ngudi su dyng nhu hdn hgp cd phan kem, chi Ngoai ra, bude cai tien nua la cdng nghe bao phu be mat lam kin dugc thay bang phuang phap phun nhu cd dac diem deu va nhanh CHU VI VA BIEN DANG DINH HINH CUA ONG THEP DINH HINH Cac nghien cuu cho thay cac hinh dang bien dang cua dng thep mui khe cung nhu chu vi ngoai cua dng cd y nghia quyet dinh den kha nang lam kin dan Khe hd giua dudng kinh ngoai cua dng thep tha va dudng kinh cua dng phai dat gia tri 10mm Bien dang chuan cua dng thep nhu Hinh 1, chu vi cua dng thep dugc tinh toan theo phuang phap tinh chu vi thudng ap dyng cho dng thep nhieu mui khe nhu sau: Ln = ^^(R 180° + kh)*(2B + a) t \ ^ / O day n la sd mui khe; R la ban kinh phan ldi va phan ldm cua mui khe; k la he sd cd tinh den vi tri cua ldp trung hda dng bj udn; h la be day dng thep; P la gdc xac dinh chieu dai cung ldm, a la gdc phan nhanh giua mui khe (Hinh 3) Hinh 3: Tinh toan chu vi cua ong thep mui khe 1- 6ng chong dirge dan sira ; 2- 6ng thep mui 308 ling dung ky thuat dan dng thep mdt hoae hai ldp cdng tac sda chua Idn Bang Moi quan he gifl-a du-dng kinh ong va so mui khe Dudng kinh 0140 0146 0168 ong So mui khe 6 0178 0194 0219 0245 0273 8 10 12 12 0299 0325 14 14 VAT LIEU THEP CHE TAO ONG THEP MUI KHE Do dac tinh cua cdng nghe dan dng, vat lieu thep vua phai du mem (deo) de qua trinh can va ep vao dng chdng dien thuan lgi nhung van phai du cung vung vdi dieu kien khai thac dau tiep theo d gieng khoan, vay viec lya chgn loai thep thich hgp da dugc nhieu tac gia de tam nghien cuu [2, 3, 12] Ket qua thu nghiem lau dai da xac dinh rang cac loai vat lieu hieu qua ban ca de che tao dng thep d Lien bang Nga la thep 10, 20 va hgp kim Crl8NI10T Day la cac loai thep cd mdi quan he giua deo va ben hgp ly Loai mac thep Crl8NI10T cd kha nang chiu an mdn cao Cdn d Hoa Ky, cac cong ty thudng su dyng thep L80 de che tao dng thep dinh hinh Ve chieu day dng thep mui khe, Lien bang Nga su dyng mdt loai be day phdi thep la 3mm thi cac hang cua Hoa Ky dua mgt sd chieu day khae tao su lya chgn phong phu cho ngudi su dyng Day la uu the ldn viec lya chgn cdng nghe phu hgp vdi dieu kien gieng khoan kbi thiet ke sua chua CONG NGHE GIA CONG VA CHE TAO ONG THEP MUI KHE Tu cac loai dng thep phdi dugc chuan bi san, mdt dau dng dugc kep chat bing bd ga chuyen dyng de keo rut qua he thdng lan ep nen dinh binh bd tri d bl mat ngoai ciia dng thep Sd lugng va bien dang lan thudc vao dudng kinh dng chdng cin sua De giam lyc keo va ma sat dge true can, bl mat ngoai cua phdi dugc bao phu ldp md graphit Hien d Lien bang Nga cung nhu cae cdng ty khae da nghien cuu va dua vao ung dyng cac loai vat lieu chdng an mdn bao phu ca bl mat ben cua dng nhim bao dam chat lugng cao, dng thep trudc dua vao su dyng Chieu dai mdt doan dng thep mui khe thudng dugc chi tao gidng 9m (dng cua Lien bang Nga) va 9,1 Im (vdi dng mui theo chuin API) QUY TRINH CONG NGHE CO BAN QUA TRINH THA VA DAN ONG La cdng nghe duge ap dyng de sua hang nghin giing khoan d Lien bang Nga [9], vay mdt quy trinh eo ban cua cdng nghe sua dng chdng bing phuang phap dan dng thep mui khe dugc thiet ke bao gdm nhung phin viec co ban sau (hinh 4): - Dat cau, each ly via san phim khdi doan sua, - Tien hanh thdng gieng bang diu thdng co hgc, - Thye hien nan sua dng chdng (neu dng bj bdp meo), - Xac dinh chieu sau doan dng khdng kin (vdi chinh xac yeu ciu ±500 mm), - Lam sach be mat ben eua doan dng chdng dugc sua, Tuygn tap bao cao Hdi nghj KHCN "30 nam Dau Viet Nam: Cff hgi mdi, thach thde mdi" / // /// ll f VJ yii III I Pi S 309 XI 'I Hinh 4: Quy trinh co* ban thuc hien c6ng nghe dan 6ng thep dinh hinh - Xac dinh cac thdng sd dac trung ve hinh dang va kich thudc doan hu hai bang cac phuong phap co hgc, dia vat ly khae nhau, - Bao phu ldp lam kin len be mat ngoai eua dng thep, - Thiet bi dugc su dyng de dan dng (dau bap ehudi thuy luc) dugc lap vao dau dng thep de dang, khdng vudng ket Do ben cua dyng cy can phai thoai man dieu kien sau: [Ny]>l,6[Np]>400kN Trong dd: N^: ben pha buy cho phep cua thiet bi can, kN; Np: ung luc keo cang cho phep cua dau bap ehudi can dng, [Np] = 250kN - Qua trinh nong va can dng, d thdi diem dau bap ehudi di vao dng thep de ed dinh (neo) dng thep vao dng chdng trudc thi can phai tao ap suat d dau bap ehudi 1,3-1,5 lan ldn ban gia tri ap suat qua trinh can, - Neu su dyng bd neo dng (la gdi dd) cho phan dau dng thep thi ap suat du ban dau de neo chung vao dng chdng phai dat gia tri 1,5-1,7 lan ldn hon so vdi can dng, - Khi can lai, phai dat gia tri ap suat 1,3 - 1,5 lan ldn ban ap suat can lan dau, - Xac dinh chat lugng dan dng thep bang bom ep vdi cac gia tri ap suat khae thudc vao dac tinh ky thuat, dac trung hinh dang va kich thudc cua doan dng sua Sir CO vA LOAI TRir Sir c o TRONG QUA TRINH THAO TAC DAN ONG CHONG Trong qua trinh thao tac dan dng, ddi xuat hien cac sy cd va phuc tap khae nhau, vay ta can phai biet cac dang, nguyen nhan va cac giai phap khae phye Cac dang phuc tap thudng gap la: - Khdng kin d chinh doan hu hai sau dan dng sua chua, - Dat dng thep mui khe khdng chinh xac vao vi tri cin thilt, - Hien tugng dinh ket thiet bi tha va dan dng vao dng thep mui khi, - Dut gay dyng ey, thiet bi qua trinh tha hoae keo thilt bi, - Ket va roi thiet bj tha vao noi bdp meo dng chdng, - Hien tugng trugt (djch chuyin) dng mui khdi noi da dan 310 U'ng dung ky thuat dan dng thep mgt hojc hai ldp cdng tac sda chQ-a ldn Nguyen nhan phuc tap va sy cd nhilu nhung cd thi phan nhdm chinh nhu sau: nhdm cdng nghe, nhdm ky thuat va nhdm cac nguyen nhan cdng tac td chuc Nhom cac nguyen nhan cong nghe - Ldp vat lieu lam kin tren be mat dng mui khe khdng cd hoae kem chat lugng, - Thdng tin ve hinh dang, kich thudc va dac trung noi hu bai khdng du, - Dinh vi sai chieu sau doan dng chdng can sua, - Khdng tuan thu diy du quy trinh dan dng, ap lyc can khdng du cung nhu qua trinh can lap lai thyc hien khdng dam bao chat lugng, - Lyc dan ep dng mui khe vao dng chdng d giai doan dau tien khdng du nen ong ldng va tyt xudng, - Khdng thyc hien thdng gieng hoae thyc hien bang dau thdng gieng cd kich thudc khdng dat yeu cau, - Hien tugng bdp meo hoae ovan eua dng chdng chua duge loai tru triet de, - Thyc hien qua nhieu thao tac can dng sua chua, dac biet gap doan dng bi hdng dang khe nut dai lam kich thudc khe nut tang len Nhdm cac nguyen nhan ky thuat - Su dyng loai dng mui khe kem chat lugng (thanh phan hda hgc, dac tinh co ly khdng dam bao cung nhu cac dang khuyet tat khae), - Khdng bao phu bet doan sua bang dng mui khe, chgn chieu day dng khdng phu hgp Nhdm cac nguyen nhan td chii-c - Su dyng trang thiet bi chua dugc can ehinh hoae can chinh chua dat yeu ciu, - Thieu cac dyng cu kiem tra va cac thdng sd tai trgng, ap suat, - Khdng tuan thu nghiem tuc che cdng nghe cung nhu cac thdng sd can thiet qua trinh lam viee De ngan ngua va loai tru cac sy cd phuc tap ke tren, chung ta can phai thyc hien chinh xac va cd trach nhiem tat ca cac cdng doan Tap hgp diy du cac tai lieu, ban hudng dan cung nhu cac quy tae an toan qua trinh lam viec Ngoai ra, viec thyc hien cdng viec phai cac chuyen gia lanh nghi, dugc dao tao diy du va bai ban Trudng 'igp dinh ket dyng cy tha, ta cd the giai phdng bd can bang each quay phai cho den bg can duge giai phdng sau mdi thyc hien cac thao tac cuu sy cd Viec loai bd dng'mui khe dan kem chat lugng cd the thyc hien bang viec phay kit hgp tuan hoan gieng khoan Phan phoi kim loai khoan pha dugc liy len bing diu nhiem tu, cdn cac thiet bi tha dugc liy len bang cac dung ey cuu sy cd chuyen dyng Tuygn tap bao cao Hgi nghj KHCN "30 nam Dau Vift Nam: Cff hgi mdi, thach thde mdi" 3i: DUNG CONG NGHE D A N ONG vAO SUA CHITA GIENG KHOAN O XNLD VIETSOVPETRO UNG Hien nay, XNLD Vietsovpetro ap dyng ky thuat dan dng thep mui khe theo cdng nghe cua Lien bang Nga vdi don vi trung thau la Cdng ty Exbur, vung Kraxnodar Tdng sd giing khoan da ap dung ky thuat dan dng thep de sua gieng la 8, dd tat ca dng chdng deu cd dudng kinh 0168mm (Bang 2) Bang 2: U'ng dung ky thuat dan ong thep d XNLD Vietsovpetro IT Gieng/ Gidn 46-1 Ngdy dng chdng Khodng ddn dng thdng 12-2000 0168mm 2505-2516 Ket qud Ghi chu Dat yeu cau khae phuc mon + b6p meo Dat yeu cau khae phuc mai mon Dat yeu cau d dd tha dng lung 0127mm 908-4 8-2000 0168mm 474-483 525-534 577-586 104-5 12-2002 0168mm 977-1135 502-5 12-2001 0168mm 120-6 1-2002 86-6 4-1997 2910-2919 Dat yeu cau 2277-2295 0168mm 2800-2809 Dat yeu cau 0168mm 711-729 Dinh ong thep 905-9 7-2004 0168mm 2626-2617 Dat yeu cau khae phuc mon + bdp meo 91-4 8-2004 0168mm 1883-1892 1980-1989 Dat yeu cau khae phuc mai mon dvan sau dan dvan sau dan khae phuc mai mon Ket qua tu Bang cho thay rang: - Hau bet cac trudng hgp dan dng thep sua gieng deu dat ket qua cdng, - C) mdt sd gieng da dan - doan chieu sau khae nhau, phan ldn la de khae phye mai mdn dng chdng nghiem trgng, - gieng 104-5, da ung dyng ky thuat dan chdng lien tiep ldp thep vdi myc dich tao d chac chan de treo cdt dng chdng lung 0127mm tha dng chdng 0168mm (Hai doan dng mui khe cd chieu dai nhu va dan len cung mdt doan chieu sau) Ket qua tu tinh CCL kiem tra chinh xac doan dan cho thay hai doan dng dugc chdng kbit len nhau, sai sd khoang ± 0,15m, - Kiem tra tiet dien ngang bang dyng cy dudng kinh dng chdng kieu MFA-40 (Multi Finger Arm) eho thiy hiu hit bien dang ngang dat yeu cau, chi cd d gieng 502-5 va 120-6 dvan cua dng chdng cdn nam d muc cao, thue chat la cdng tac thdng gieng va nan doan dng bi bdp meo chua dat yeu ciu, - Mdt trudng hgp (d gieng 86-6) da xay su co thao tac, dng thep dinh hinh bi rach sau dan Cdng tac cuu su cd khdng dat yeu ciu, chua thyc hien dugc cdng tac giai phdng doan dng thep da bi bu hai 3 12 ling dung ky thuat dan dng thep mgt hoae hai ldp cdng tac su-a chQ-a IdTi THirC vA KHO K H A N Of XNLD VIETSOVPETRO HIEN NAY TRONG SITA C H I T A ONG KHAI T H A C THACH Tuy kit qua tuong doi cdng sua dng, nhung thyc tl van chua dap ung nhu ciu sua dng chdng d XNLD Vietsovpetro, bdi vi hien mdi chi thyc hien sua nhat mdt loai 6ng dudng kinh 0168mm cap dudng kinh 0140mm cua dng khai thac lai dugc dung kha phd biin cung can sua d rat nhieu gieng Cac trd ngai sua dng 0140mm la dan dng, tit ylu dudng kinh cua giing khoan bi thu hep dang kl, keo theo viec thay ddi toan bd ciu true va dac tinh ky thuat cua he thilt bi long giing, cin khai thac va tat ca trang thiet bi di kem Ngoai ra, dng chdng 0140mm thudng chdng qua tang Oligoxen (tang via ap suat di thudng cao, gradient ap suit via d nhilu gieng cd the dat tdi 1,60 - 1,68) giai doan khai thac hien nay, cac giing se din dugc chuyen sang khai thac bang phuong phap gaslift, tuc la se tao chenh ap ldn giua ben va ben ngoai gieng Do vay, yeu cau vua bao dam kin doan dan vua dap ung kha nang tri chenh ap ldn la mdt thach thuc khdng nhd cho viec ung dyng ky thuat kha phd bien va hieu qua Chinh vi vay, hien nhilu giing khoan d XNLD Vietsopetro dang tinh trang bao quan de lua chgn phuong phap va cdng nghe sua gieng hieu qua hon KET LUAN vA KIEN NGHI Dan dng thep mui sua chua gieng la giai phap ky thuat thuc hien nhanh chdng, don gian, dat hieu qua kinh te va ky thuat cao so vdi cac giai phap khdi phuc kin dng chdng dang dugc ap dyng bien d tren the gidi Nam vijng ky thuat dan dng thep, ta cd the thyc hien hieu qua nhieu cdng viec khae nhu dan dng thep than tran de gia cd tam thdi doan phuc tap qua trinh khoan, dat cau each ly dng chdng khai thac tam thdi va vTnh vien, tao d dd de treo dng chdng lung, v.v Su dyng ket hgp tram xi mang dudi ap suat va dan dng sau dd se cung cd va tang ben doan sua gieng len dang ke Mdt nhung ban che co ban cua phuong phap dan dng la giam dudng kinh gieng khoan Do vay, viec lya chgn cdng nghe hgp ly phai can ddi ca bai toan tri va dn dinh san lugng khai thac, chi phi sua va he thiet bi ldng gieng mdi dugc su dung sau sua Vat lieu lam kin bao phu be mat dng thep dinh hinh hien dang lam ban che chieu sau ung dyng ky thuat vao cdng tac sua gieng d XNLD Vietsovpetro Do vay, de ung dyng triet de ky thuat dan dng thep vao cdng tac sua gieng cd chieu sau ldn, nhiet dat tdi 140 - 150°C, ddi hdi viee hoan thien va nang cao tin cay cua vat lieu bao phu be mat dng thep Tuygn tap bao eao Hgi nghj KHCN "30 nam Dau Vift Nam: Cff hgi mdi, thach thde mdi" 313 TAI LIEU THAM KHAO Hoang Quoc Khanh, Tran Xuan Dao, 2004 Omnem o HayHHO-ucc.iedoeame.nbCKoii padome ((Auanus npuHun cMRmun odcadubix KOJIOHH U uemodu ta npedoepauieHUfi» BbCTCOBneTpo r Bynr xay 12/2004r Hoang Qudc Khanh, Vu Thien Luong, va n.n.k., 2002 lfng dung ky thudt ddn dng thep dinh hinh de gia cd tgm thai thdn giing khoan a md Bgch Hd Tap chi Diu khi, Sd 3/2002 K.M rapH4)0B, A.X Ka^bipoB TaTHHnHHe(|)Ti>, 2002 eoccmahoejieHUH eepMemuuHoemu SKcnjiyamaifuoHHOu xosHiicTBO 9/2002 mexHOJioauH KOJiouubi He4)TaH0ii TCXHUKO U C M HHKHTHH, C O HexpoB, C B BHHorpaztoB, 1983 Onbim pcMonma cmcuibUbiMu nnacmbipfiMu odcadnobix KOJIOHH e HamioHHO-Hanpae/ieuHbix CKeaoKunax He(|)THHOH X03HHCTB0, 10/1983 M.JI KHceubMaH, H.H SaxapHCHKO, 1984 Peuoum odeadnux KOJIOHH cmojibubmu nnacmbipfunu e FjiaemtoMeuHetpmeease He(|)THHoit XOSHJICTBO, 11/1984 M.Jl KHee.nbMaH, 1984 OijeuKa Kauecmea pejvtouma jwema/iJiuHecKtatu njiacmbipfLMu He4)TaHoii xosaiicTBo, 2/1984 A.T .Hpbiiu, M.JI KHce.nbMaH, H.B., 1985 Bbidop eepjvtemuKoe npu pejuonme odcadubix KOJIOHH cmcuibHUMU njiacmbipnMU He4)THH0H XO35IHCTBO, 1/1985 M.JI KHce.nbMaH, 1985 Ocuoebi mexnojioeuu pej^tonma odcadnbix jHemcuuiuHecKUMU ruiacmbipHJAU HetJjTHHon XOSHHCTBO, 8/1985 KOJIOHH Rendi M., Merit & Run Gusevis, 2002 Pejuoum CKeaotcuH c ucno.ibSoeaHueju ycmauaejiueaej^bix e odcaotceuHbix emeoax pacmupaejvtbix xeocmoeuKoe He(})Tera30Bbie xexHOJiorHH J^f26 11-12/2002 lO.B.H MHmHH, O.A JleaamoB, E.H UIxaxoB, K.B ByitKO, F.T BapxyMHH HoebimeHue nponuocmu emeuoK odcadubix KOJIOHH e unmepeajie HapyiueuuR 3a enem sanpeccoeKU e HUX deyxcjioiiHUbix njiacmbipeu ll.Filipov A., 1999 Expendable tubular solution SPE 560500, 1999, Annual Technical Conference and Exhibition, Houston Texas, October 3-6, 1999 12.IO.M BapacbiPHH, B.O By.nHHKOB, 2002 TeopiiH u npaxmuKa npedynpeoiedeHUH ocjiooiCHeHuii u pcMOuma CKeaoicuHbi npu ux cmpoumejibcmee u 3Kcnjiyamaiiuu TOM 4, MocKBa Heapa, 2002r 13.Lohoefer C L et al., 2000 Expandable liner hanger provide cost-effective alternative solution lADC/SPE 59151, 2000 lADC Drilling Conference, New Orlean, Luoisiana, February 2000 14.Haut R C et al., 1999 Meeting economy challenges of deep water drilling with expandable tubular technology Deep Offshore Technology International Conference and Exhibition, Stavanger Norway, Oct 1999 15 Mark R.D., T McCoit, L Ring, 1999 How in-situ expansion effect casing and tubing properties Wold Oil, July 1999, p 69 - 71 16 Mark R.D et al., 2000 In-situ expansion of casing and tubing: Effect on mechanical properties and resistance to sulfide stress cracking, p 00164, Corrosion 2000, March 2000 ... thep da bi bu hai 3 12 ling dung ky thuat dan dng thep mgt hoae hai ldp cdng tac su-a chQ-a IdTi THirC vA KHO K H A N Of XNLD VIETSOVPETRO HIEN NAY TRONG SITA C H I T A ONG KHAI T H A C THACH... hgi mdi, thach thde mdi" 3i: DUNG CONG NGHE D A N ONG vAO SUA CHITA GIENG KHOAN O XNLD VIETSOVPETRO UNG Hien nay, XNLD Vietsovpetro ap dyng ky thuat dan dng thep mui khe theo cdng nghe cua Lien... dng, vat lieu thep vua phai du mem (deo) de qua trinh can va ep vao dng chdng dien thuan lgi nhung van phai du cung vung vdi dieu kien khai thac dau tiep theo d gieng khoan, vay viec lya chgn