2 7 0 Trien khai cong nghe van chuyen dau khong diing may bom d cac gian phia Bae md Bach Ho TRIEN KHAI CONG NGHE VAN CHUYEN DAU KHONG DUNG MAY BOM 6 cAc GIAN PHIA BAC MO BACH H 6 Le Dinh Hde, Le Ba T[.]
270 Trien khai cong nghe van chuyen dau khong diing may bom d cac gian phia Bae md Bach Ho TRIEN KHAI CONG NGHE VAN CHUYEN D A U KHONG DUNG MAY BOM cAc GIAN PHIA BAC MO BACH H Le Dinh Hde, Le Ba Tuan XNLD Vietsovpetro TOM TAT Trong qud trinh van chuyin ddu khai thde da tdch tgi cdc gidn a khu vuc phia Bde md Bgch Hd din cdc kho ndi chua xudt dau (KNCXD) phia Nam thuang xdy hien tuang dao dpng dp sudt bien dp ldn liru lugng bam khdng dn dinh Han nira dp sudt bam ddu tren cdc gidn ndy thudng cao cdch xa KNCXD De khdc phuc hien tirgng ndy, XNLD Vietsovpetro da thu nghiem cdng nghi van chuyen ddu khai thde tir khu vuc ndy bdng cdch khdng sir dung mdy bam Ddu khai thde tren gidn cd dinh (MSP) dugc tdch sa bp binh tdch bgc tren gidn vd sau dugc thu gom vi gidn trung tdm de tdch bgc Viec dp dung cdng nghi ndy cho phep tiit kiim ndng lugng bam vd gidm thiiu thiit bi van hdnh tren cdc MSP Ngodi ra, cdn tdng cudng khd ndng hm chuyin ciia hdn hgp ddu dudng dng nha cd mpt lugng hda tan Bdo cdo ndy trinh bdy mpt sd kit qud thir nghiem cdng nghe van chuyen ddu khdng diing mdy bam tir gidn MSP-7 din MSP-5 vd din MSP-3 vd se dp dung cho todn bp khu vuc phia Bde md Bgch Hd sau hodn cdi cdc MSP GIOl THIEU He thong thu gom, xu ly va van chuyen san pham khai thae tren md Bach Ho dugc xay dyng nhu sau: C) khu vyc phia Bae, dau dugc khai thac tu tang mdng, Oligocen dudi va Miocen dudi dugc thu gom va tach tren cac MSP, sau dd dugc bom den KNCXD O khu vyc Trung tam, dau phan ldn dugc khai thac tu tang mdng, cd nang lugng via cao, nen cac gian nhe da dugc xay dung San pham khai thac tu gian nhe d dang hdn hgp dau hay dau bao hda khi, dugc van chuyen ve gian cdng nghe trung tam CTP-2, CTP-3 de tach kbi va tach nude triet de sau dugc bom ve KNCXD Viec quy hoach nhu khu vuc phia Bae md da lam cho chi phi de van hanh cac MSP cung cao ban, va nhu vay chi so kinh te la rat thap Phan tich qua trinh lam viec cua he thdng dudng dng MSP-7 -^ MSP-5 -^ MSP-3 ^ MSP-4 -^ MSP-8 -^ MSP-1 -^ KNCXD-1, van chuyin diu da tach cho thiy rang, ap suat trung binh he thdng dudng dng dao dgng mgt bien rat ldn, chenh lech giua gia tri ap suat ldn nhat va nhd nhat cd the dat ldn 13 - 15atm Dieu dd cho thay rang, lugng chat long bom vao he thong dudng dng la khdng dn dinh, va nhu vay van tdc ddng chay dng cung se dao ddng mdt bien ldn, dan den viec xung ddng dudng dng; nhat la cac doan dng dung Trong mdt sd trudng hgp ap suit he thdng dudng dng d nhung gian each xa KNCXD co the vugt ap suat lam viec cua may bom lip dat tren gian Tuygn tap bao eao Hgi nghj KHCN "30 nam Dau Viet Nam: Co hgi mdi, thach thde mdi 271 PHUONG A N H O A N C A I C A C GIAN KHU VUC PHIA BAC MO BACH HO Tinh den nay, phan ldn cac MSP phia Bae da khai thac tu 12 den 17 nam De tilp tyc giu cho cac MSP d tinh trang ky thuat binh thudng, can phai tiln hanh sua chua ldn Mat khae, de giam chi phi van hanh va dam bao thyc hien dugc mgt s6 chuc nang cong nghe mdi, can hoan cai lai to hgp cdng nghe tren mgt sd MSP Bdi vay, van de tim kiem giai phap cdng nghe thu gom va xu ly dau cho cac MSP d day da trd nen cap thiet, giup nang cao hieu qua lam viec cua toan bd he thdng thu gom va dam bao keo dai thdi gian khai thac hieu qua cac MSP L Van chuyen san pham khai thac d dang dau da tach nhu hien co Trong trudng hgp nay, td hgp cong nghe tren MSP dugc giu lai nhu hien San pham khai thac tren MSP dugc thu gom va tach qua hai bae tach, sau dd dugc bom vl KNCXD, hoae bom sang gian cong nghe Trung tam Uu the cua phuong an la: - Hien dang dugc van hanh thuan thyc tren cac MSP, - Cho phep xu ly mdt each ddc lap cac tinh hudng cdng nghe phuc tap xay va dl dang hieu chinh cac thdng sd ky thuat cho phu hgp vdi tinh hinh mdi tren MSP hay tren toan md Tuy nhien, dieu doi hdi phai cd cac bao tri tuong ung de dam bao tinh trang ky thuat cho MSP, hoae cho phan ldn cac trang thiet bi, cac he thong va ket cau kim loai, nhu vay se dan den chi phi tdn kem Van chuyen san pham khai thac d dang hdn hop dau bao hoa De thyc hien phuang an nay, tu td hgp thiet bi cdng nghe tach va bom dau hien CO tren MSP chi binh tach cao ap se dugc su dung nhu thiet bi tach so bg Sau hdn hgp dau - nude bao hoa dugc van chuyen ve gian Trung tam bang ap suat bae tach thu nhat Hdn hgp dau - nude bao hoa tu binh tach cao ap, khdng di qua binh OOm^ ma dugc dua thang vao he thdng dudng dng van chuyen san pham Van chuyen san pham khai thac d dang hon hop dau Trong trudng hgp san pham khai thac khdng tach tren MSP va dugc van chuyen ve MSP Trung tam dudi dang hdn hgp dau bang nang lugng cua gaslift dudi ap suat mieng gieng Theo ket qua tinh toan so bg de van chuyen san pham khai thac tu MSP-7 d dang hdn hgp dau ve MSP-4 yeu ciu ap suat tren MSP-7 la ISatm Tdn hao ap suat ldn nhu vay kbi van chuyen se lam gia tang cdng tac va giam san lugng gieng Hon niia, cdng suat binh tach hien cd tren MSP-4 cho tdi nam 2009 khong du de tach toan bd san phim thu gom tu cac gian MSP-3, v.v , MSP-8 Trong tat ca cac phuang an neu tren thi phuong an van chuyen hdn hgp dau bao hoa (phuong an hai) la kha thi ban ca D I thyc hien phuong an nay, tu tl hgp thilt bi cong nghe tach va bom dau hien co tren MSP chi m6i binh tach cao ap se dugc giu lai va su dyng nhu thiet bi tach so bd 272 Trien khai cong nghe van chuygn dau khdng diing may bom cac gian phia Bae md Bach Ho THiy NGHIEM CONG NGHE VAN CHUYEN DAU K H O N G DUNG M A Y BOM TREN KHU VlTC PHIA BAC M O BACH H O Tren khu vyc phia Nam md Bach Hd nhieu nam qua da thyc hien cong cdng nghe van chuyen dau bao hoa khdng can bom tu cac BK sang gian cdng nghe Trung tam sd Nhung, dac thu d khu vyc la luu lugng van chuyen ldn va dau cd nhiet ban diu cao (80 - 100°C) Nguge lai, tren khu vyc phia Bic md Bach Hd luu lugng khai thac tren tung MSP thap nen dau cd nhiet khdng cao, khoang 40 - 45°C, cho nen viec chuyen sang ung dyng cdng nghe mdi can phai than trgng va thyc hien theo Id trinh Thir nghiem cdng nghe van chuyen dau khdng dung may bam tir MSP-7 sang MSP-5 Bat dau tu thang 3/2003, tren khu vyc phia Bae md Bach Hd da tien hanh thu nghiem cdng nghe van chuyen dau khdng can bom tu MSP-7 sang MSP-5 va sau dd la tu MSP-6 sang MSP-4 Hdn hgp dau - nude bao hoa tu binh tach cao ap, khdng di qua binh OOm^ ma dugc dua thang vao he thdng dudng dng van chuyen san pham sang MSP ben canh de tach bae hai va sau dugc bom ve KNCXD Khi tach binh tach cao ap dugc thu gom va dua ve gian nen nhd, ap suat dau vao cua gian nen nhd dugc khdng che khdng nhd hon 6,5atm Bdi vay, nhieu trudng hgp ap suat lam viec cua binh tach cao ap tren MSP bi khdng che bdi ap suat cua he thdng thu gom Trong thdi gian thu nghiem cdng nghe van chuyen khdng dung bom de van chuyen san pham tu MSP-7 ve MSP-5 da ghi nhan mdt sd thdng sd lam viec tren MSP-7 va dudng dng nhu sau: - Ap suat lam viec cua binh tach tren MSP-7 trudc va sau kbi thu nghiem cdng nghe mdi van dn dinh va dao ddng khoang tu 9,0 den lOatm, cho nen khdng anh budng den luu lugng khai thac cua gieng - Phy thudc vao che lam viec cua cac gieng gaslift, nhiet binh tach NGS tren MSP-7, dao ddng tu 43 den 45°C, va nhu vay nhiet san phim dugc tren dng dung cua MSP-7 nim khoang tu 40 - 42°C, so vdi luc dung may bom thi nhiet tren dng dung da giam tu - 5°C - Vdi muc dich nghien cuu thuy dgng lyc hgc cua dudng ong kbi van chuyin dau bao hoa khi, ap suat tren diu cudi dudng dng, tren MSP-5, da dugc dilu chinh d cac cip dg khae nhau, tu 2,0 din 6,2 bar, dilu lam cho ap suit tren dng dung MSP-7 cung thay ddi tuong ung va dao ddng tu 4,0 - 6,8 bar, luu lugng van chuyin san phim theo dudng dng dn dinh Ket qua nghien cuu dugc trinh bay Bang Bang 1: Cac thong so lam viec cua du'dng ong MSP-7 -^ MSP-5 van chuyen khong dung bom giai doan 2003 - 2004 Ap sudt tren dng dirng MSP-7, atm Ap sudt tren dng dirng MSP-5, atm Tdn hao dp sudt, atm 4,3 - 5,3 2,0-2,5 2,3-2,8 4,7 - 5,2 2,5-2,7 2,2-2,5 5,1-5,4 3,7-3,9 1,4-1,5 5,6-6,8 3,9-6,2 Tuyen tap bao cao Hdi nghj KHCN "30 nam Dau Viet Nam: Co hdi mdi, thach thde moi 273 - Kbi tach tu binh cao ap dugc thu gom va van chuyen ve gian nen nhd ap suit tren dng dung MSP-7 cua be thdng dudng dng thu gom giu dn dinh a muc 7.0 8,5atm va nd phan quyet dinh den ap suat binh tach - Da ghi nhan dugc sy thay ddi cua nhiet san pham van chuyin din MSP-5, so vdi trudc day van chuyen dung bom thi nd da giam tu -7"C, xudng cdn 33 - 34.5°C Thd nghiem cdng nghe van chuyen dau khong dung may bom tu MSP-7 sang MSP-3 thdng qua MSP-5 a Cdc thdng sd idm viec cua dudng ong MSP-7 -^ MSP-5 l