Tuygn tap bao cao Hdi nghj KHCN "30 nam DJu khi Viet Nam Co hoi mdi, thach thuc mdî 1051 M O H I N H D O N G C H O PHAT TRIEN M O M O T K H A I N I E M SONG C O N C H O P H A T TRIEN CAC M O K H I NG[.]
1051 Tuygn tap bao cao Hdi nghj KHCN "30 nam DJu Viet Nam: Co hoi mdi, thach thuc mdi^ M O HINH DONG C H O PHAT TRIEN M O : M O T KHAI NIEM SONG C O N C H O PHAT TRIEN CAC M O K H I NGOAI K H O I TAY NAM VIET NAM Nguyen Due Hanh, Le Nhat Vinh jeff Harris, Greg Solomon Unocal Vietnam TOM TAT Vdi trir lugng tgi chd khodng 6TCF (170BCM), cdc md & cdc Id B, 48/95 vd 52/97 (Id B vd 52) thudc bi Malay - Thd Chu ngodi khoi Tdy Nam Viet Nam se dugc Cdng ty ddu Unocal vd ede nhd ddu tu dua vdo khai thac phuc vu cho nhu cdu diin ndng Viee phdt triin cdc md ndy se phdi duong ddu v&i rdt nhiiu thu thdch nhu diiu kiin dia chdt phirc tgp, chdt lugmg cua cdc mo khdng ddng diu su phdn bd 9$: vi hdm lugmg CO2 thay ddi ldm, vi , •, , ^ - tri md ndm ngodi khoi cdch xa ddt liin El vd cdc hd tiiu thu, vd cudi cimg la phdi ^' i^*X?^'^ p thda mdn cdc diiu kiin kinh ti cua du M kV !'|-t" ' ' "" • \ ' i 0,670 M W -\ an Di gidi quyit nhirng khd khdn neu trin, Cdng ty ddu Unocal dd 12* V.111 W E'lonnrdxm J IS^iHi^kfi MMkHJ-a - wtj:tMs^Sak^^^^ '^JH^UHHI ^ ^ ^ ^ iMMb Hinh la: Generral location map for Blocks lua chgn mdt md hinh phdt triin md Bi&52, offshore SW Vietnam m&i ddi v&i Viet Nam: md hinh phdt , triin ddng Md hinh phdt triin md ndy yiu cdu phdi tdi uu cdc giing khoan phdt triin cdng nhu cdc gidn khai thde y IJ I U > * M M » « M « ~ ^ mdt each liin tuc sudt qud trinh phdt triin md ddng ,/''^/k th&i phdi dam hdo tinh hgp ly vi kinh ti Kit qud cua viec [ ^ ," eiKiiWM dp dung thdnh edng md hinh ndy se ddm bdo tinh cgnh I Vk - tranh cao cho sdn phdm khai thde dugc IMw«M \ Bk>'c»0 GI61 THIEU Bat dau vdi viec phat hien d gieng khoan B-KLIX vao thang 12/1997, Cdng ty diu Unocal da chung minh dugc su tdn tai mdt tilm nang diu ldn d Id B ngoai khoi Tay Nam Viet Nam (Hinh la va lb) Tilp theo dd la cae phat hien d Id B va Id 52/97 nam 2000 va cdng d cac gilng khoan thim lugng •N'i ^% '^9E flMtSWWl • thdi gian tir nam 2000 din nam 2004 da khing dinh cac trim tich chira va condensat dugc phan bd rdng khip d Hinh l b : Detailed map of study area 1052 Md hmh ddng cho ph^t trign md: Mdt khai niem song cdn cho ph^t trign cac md kjij^ md chinh Kit qua tinh trir lugng tai chd cua Kim Long, Ac Quy va Ca Voi vao khoang 6TCF (170BCM) Cdng ty Unocal da edng bd phat hien thuong mai vao thang 12/2002 va tilp theo dd la da xay dumg Ke hoach phat triln md dai cuong (Outline Development Plan - GDP) nham xac lap cac nhiem vu cin thilt cho viec tiln tdi thuong mai hoa tilm nang d eae Id Theo ODP, md dugc phat triln theo giai doan ehinh song song vdi viec xay dumg cae tuyen dudng dng dan vao bd, xay dumg cac cum nha may dien ODP ciing da tan dung lgi the ciia viec ap dung cac kinh nghiem phat trien md cua Unocal khu vuc Do tinh phuc tap ve dia chat va tinh khdng ddng deu ve phan d cac via/md, chuang trinh phat trien md can ed tinh linh hoat cao va cd kha nang thich ung vdi cac thay ddi cd them thdng tin cap nhat qua trinh Ichoan va phat trien md Bai viet se gidi thieu mdt md hinh ddng phat trien md nham tdi uu cac hoat ddng san xuat ciing nhu cac dieu kien kinh te, han che cac rui ro cho du an nhu: tinh lien tuc va luu thdng giiia cae via chua, trir lugng khai thac cho mdi gieng, su phan bd ham lugng CO2 va nhu ciu ciia thi trudng THAO LUAN Nhung phirc tap ve dia chat 9ti>*if390t3*CUY NORTH MALAY BASIN STRATIGRAPHIC SUMMARY ftiMsaaL Phat hien d cac md Kim Long, Ac Quy va Ca Voi nam mdt khu vuc dut Hinh 2: North Malay basin gay bam nat ciia phin Bic bl Malay - Thd Chu Mdi tmdng lang dgng cua cac trim tich cd tudng thay doi tir dim hd va sdng tudi Oligoxen cho din sdng - chau thd ddng ben tdi cua sdng tudi Miocen va dugc phii bdi tram tich dan xen giira tudng sdng va biin tudi Plio-Pleistocen Nam tap trim tich chinh da dugc minh giai, dd tap E, F, H va I-tren ehira cac than cat sdng khdng lien tuc tram tich mdi tmdng dai sdng udn khiic ngoin ngoeo Cac thi cat cac tap Idudi va J nhin chung trai rgng hon va duge Reservoir Structural Complexity Large 3D seismic surveys minh giai la tram tich hem vuc sdng ddng ben Amplitude mopping of individual (Hinh 2) Cho den da cd 19 gilng phat reservoir targets hien sd 23 gilng khoan tham dd vdi AVO analysis dien tich phan bd dugc trai rdng tren khoang Complex 3D wells paths fo maximize 5000 kml Cac biy dugc hinh cac the number of potential pay sands cau tao khep kin 3-hudng ddc va 2-hudng Hinh ddc tua vao dirt gay cac he thdng dai va Tuygn tap bao cao Hgi nghj KHCN "30 nSm Phu Viet Nam: CQ- hdi mdi, thach thuc mdi" 1053 hep ciia cac dirt gay cd mat day dac va gin song song Cac khep kin 4-hudmg ddc khdng phd biin khu vuc md Cac tich tu rieng biet thudmg kha nhd (chi vai ty ft^) bi gidi ban bdi cac khep kin kiln tao va chilu rdng ciia cac khdi dirt gay Tuy nhien, tap hgp nhilu tich tu chdng chit theo phuomg thing dung dge theo bit ky he thdng dirt gay khu vuc nao diu trd nen dang ke (Hinh 3) Chit lugng thay ddi ham lugng CO2 bien thien ldn theo cac ddi khae (tir 2% din hon 50% theo the tich) Ciing vdi sir thay ddi ldm ve su phan bd kich cd tang chira, su biin thien ve chat lugng thuc su la nhimg thach thue mdi chien luge khai thac va ddi hdi phai cd mdt chien luge hoa trdn giira cae gian khai thac mdt each hgp ly Ndi chung, dieu kien dia chat d day rat gidng vdi dia chat cua cac md lan can dang khai thae ngoai khoi Thai Lan ma Unocal da cd hom 30 nam kinh nghiem vdi hon 2000 gieng khoan tham dd va khai thae Viec phat trien cac md cd kieu tang chua nhu the ddi hdi phai cd nhieu gian va gieng khai thac de thu hdi dugc tai nguyen Cac khao sat dia chan 3D hien dai, eae phan tich ky thuat va cac phuomg phap danh gia trir lugmg dua tren CO sd thdng ke phii hgp va vdi mdt sd lugng ldn cac gieng khoan, lich sir khai thac rdng khap da tao nen su tin cay cho viee dau tu phat trien md Cdng nghe khoan gieng than nhd, cae ky thuat hoan thien gieng hieu qua eao va cac thiet bi phii hgp da giup eho viec phat trien md cd tinh kinh te If l>DS'~i.*'< MO HINH PHAT TRIEN DONG >fi >A -> • • ' / % Khai quat ve ke hoach phat trien mo De thuong mai hda ngudn d md Kim Long, Ac Quy va Ca Voi, bat bude phai phat trien ddng thdi mang du an: mang phat trien md d ngoai khoi, mang du an dudng dng van chuyen vao bd va mang xay dimg he thdng nha may dien Tinh linh ddng tat ea cac mang du an tren la can thiet, nhung quan trgng nhat la tinh linh ddng cdng tac phat trien md ngoai khoi ban than nd chua nhieu rui ro tiem an va tinh khdng chac chan Chuomg trinh phat trien md ngoai khoi da vach ODP va cd the tdm tit nhu sau: He thong thilt bi ngoai khai dl phat trien cac Id B va 52 se sir dung cac cdng nghe va ky thuat da qua kilm i^ f^hlff > -