Tuyin tap bao cao Hoi nghj KHCN"30 nam Dau khi Viet Nam Co hoi moi, thach thuc moi" 387 NHlTNG THONG TIN M 6 I VE DIEM LO DAU 6 DAM THI NAI, THANH PHO QUY NHON BINH DINH Nguyen Thi Dau, Le Hoai Nga Vi[.]
Tuyin tap bao cao Hoi nghj KHCN"30 nam Dau Viet Nam: Co hoi moi, thach thuc moi" 387 NHlTNG THONG TIN M I VE DIEM LO DAU DAM THI NAI, THANH PHO QUY NHON - BINH DINH Nguyen Thi Dau, Le Hoai Nga Viin Ddu Khi Nguyen Manh Thuang Tong cong ty Ddu Viet Nam TOM TAT Cdc mdu ddu asphalt dugc cho la biiu hiin ddu md & Ddm Thi Ngi ndm ben b&phia Ddng Ddm Thi Ngi, thudc xdm Hdi Gido, thdn Hdi Binh, xd Nhdn Ly, thdnh phd Quy Nhon tinh Binh Dinh, cdch thdnh phd Quy Nhom 10km vi phia Ddng Bde Diim Id dd dugc biit din tir nhimg ndm 20 cua thi ky XX Ddu - asphalt phdt Id & bdi cdt gdn mep nu&c, vuang trin cdy d&i thuy triiu, trin mat vd khe nirt da granit & khu vuc bo Ddng Ddm Thi Ngi Trin co s& ki thira cd chon lge, tdng hgp kit qud cua cdc cdng trinh nghiin ciru tru&c vd nhirng nghien ciru m&i, tdc gid di din kit ludn vi ddu Id & Ddm Thi Ngi: • Ddu dugc cung cdp vdo diim Id nhiiu ldn • Ld ddu thd chua qua xir ly, dugc sinh tir da me tudi Di tam, cd nhirng dge diim dia hod tuong tu v&i da me vd ddu thd da dugc phdt hiin a be Sdng Hdng vd Nam Cdn Son Song chung lgi cd mdt sd ddc diim khdc biit v&i ddu vd da me & be Ciru Long thudc thim luc dia Viet Nam • Mdt sd mdu cd ngudn gdc tir da me la set biin chira VCHC biin chiim uu thi • Cd thi Id biiu hiin cua ddu tir cdc bdy a ngodi khoi bi Phu Khdnh di cu theo "dut gdy ddn" vdo vung cira vinh, tir ddy chung bi rd ri vd dugc ddng triiu dua vdo diim id DAT VAN DE Cac mau dau o Dam Thi Nai da dugc biet den tir lau, rat nhieu c6ng trinh nghien cuu da dugc trien khai nham danh gia ban chat cua chung, giup ich cho cong tac tim kiem tham dau o viing lan can Do tinh phuc tap ciia d6i tugng nghien ciru nen cho den van de dau tir dau dich chuyen den va ca che dich chuyen nhu the nao van chua dugc giai quyet thoa dang Tuy nhien, voi sir phat trien ciia khoa hgc, thiet bi cung nhu phuong phap nghien cuu cang hien dai, nhiing cong trinh nghien cuu sau thuang phat hien them nhirng th6ng tin mai va day dii hon ve ban chat ciia dau a Dam Thi Nai 388 Nhung thong tin mdi vg digm lo dhu Phn\ Thj Nai Thanh ph6 Quy Nhon - Binh Pjnh L So- lu-Q-c ve cac bieu hien dau, 6* Viet Nam a Biiu hiin / c Diim id Nui Lich - Yin Bdi Da v6i he ting Nui Ljch (Dzni) va set than he ting Hgp Minh (N,hn,) day 50 - 60m, phu bat chinh hgp len da biin chit phirc he S6ng Hong la nhimg trim tich ngam diu o khu vuc diem 16 Co the diu - asphalt or day dugc sinh tir nhung tap set bgt kit dim h6 tuli Oligocen lan can di cu den [11] d Diim Id Dong Ho - Qudng Ninh Tang chira la cat kit o phin tren diep Dong Ho tuli Oligocen co chilu day - 22m, ham lugng dau da tir - 12%Wt Diu - asphalt co nguIn g6c tir VCHC dim ho tuli Oligocen [11] e Diem Id Dam Thi Nai (phan ddt liin ki can hi Phu Khdnh) Nam a bor phia D6ng Dim Thi Nai, each Ha Ngi khoang 1020km vl phia Nam, each Thanh ph6 H6 Chi Minh 700km vl phia Bic, va each ph6 Quy Nhon 10km vl phia D6ng Bae, thuoc xom Hgi Giao, th6n Hgi Binh, xa Nhan Ly, ph6 Quy Nhon, tinh Binh Dinh Diem 16 da duge bilt din tir nhimg nam 1920 Diu - asphalt duge phat hien cat bo roi gan mep nuoc vuong tren cay dai thuy trilu, tren mat va khe nirt da granit a khu v uc bo D6ng Dim Thi Nai Cac nha dia chit Phap da khoan mgt s6 gilng khu vuc nhung tai lieu khong duge luu lai, chi diu vlt mgt gilng khoan dugc danh dau bang cgc tre tren mat dim (Hinh 1) Tuygn tap bao cao Hoi nghj KHCN"30 nam Phu Viet Nam: Co' hoi mdi, thach thuc mdi^ 389 Hinh I: Dau vet gieng khoan tren mat Dam Thi Nai day, tac gia chi de cap chi tiet nhimg nghien cuu diem 16 dau m6 Dam Thi Nai Ket qua nghien cu-u cac mau dau o- Dam Thi Nai Hien nay, van phat hien thay dau - asphalt khe nut ciia da granit tai ch6 16m ba Tay ciia ban dao Phuong Mai chi tren dien tich nh6 ben chan niii, triing vao muc thuy trieu cao nhat Dau - asphalt dugc tim thay khe nut granit hoae bam tren be mat ciia da Ke voi diem 16 dau tren da granit la bai cat bo roi tu6i De tu, eo nhimg vet dau asphalt bam tren cay su vet gan muc nuoc thiiy trieu len xu6ng hoae cat bo roi ben bo bien (Hinh 2) Them vao do, nhimg nam gan day nguoi dan nu6i torn dia phuong phan nan ve miii la cua t6m dugc nu6i tai cac dam tom o phia Bae Dam Thi Nai cang gay su chu y cho cac nha tim kiem tham dau Den nay, da e6 nhieu doan chuyen gia den khao sat, nghien cim va dua nhijng ket luan a nhimg mirc khae ve ban chat ciia bieu hien dau o Dam Thi Nai va ngu6n g6c vat chat hiru co da sinh chiing a Cosd dii' Hiu Tai lieu dugc sir dung cho bai viit gIm: - Kit qua ciia cac c6ng trinh nghien cim dilm 16 cong b l tir nam 2004 tro vl truoc 390 Nhung thong tin mdi vg digm 16 dhu d P^m Thj Nai Thanh phd Quy Nhon - Binh Pjnh S6 lieu phan tich sic ky khii ph6 (GCMS va GCMSMS) ciia 19 miu diu - asphalt liy tir dilm 16 Dim Thi Nai va cac mau dau tir cac be S6ng H6ng, Cuu Long, Nam C6n Son dugc phan tich tai Cue Dia chat Dan Mach fptCfi- Gnmil t h i ^ ^ f t t l k K IX%> C i /ii o is S ; 1 o s CQ - S CZ3 a i u cs u J I m 1000000 - — OOOODDZ i iiC»!q O i f V G a p o o « s l-i> J^'rIi'i^iJ~'T»i'l-'l'-i - ' : M;: •; on :; Tuygn tap bao cao Hdi nghj KHCN"30 nam PSu Viet Nam: Co' hdi mdi, thach thuc mdi 401 as O > -di 'to (ii IT) 00 o > G (ij JS ii E -to B s |N ,01 (0 Q (S IJ ,011** m/ H ll 11/ Ik e S i II O O O 0 0 0 0 M « 1) IT} O O O 0 0 ^ (N \ M i"o }5 Q T* D IK (D III ll f^ / \ li; m a s I • n e r 0 0 4l > > n\ X W \ \ V 'fSi : n (D; ir ^ 10 m '** n r lc D ^ S il £ D mi HQi IS 1/) p 1* La c 1„ o o o o r o o o (N o o o o o o n o o o * [m\^ o o o 10 o o o (0 h c c S 5) h OC 404 Nhung thdng tin mdi ve digm 16 dau d PSm Thi Nai Thanh Quy Nhon - Binh Pjnh Tuygn tap bao cao Hdi nghj KHCN"30 nam PSu Viet Nam: Co hdi mdi, thach thuc mdi" 405 Theo so lieu th6ng ke nhat trieu hang nam tai Quy Nhon ciia Trung tam Khi tugng Thuy van QuIc gia, muc chenh cao giua muc trieu cuang va trieu rong giao dong tren duoi 2m vi the song nuoc tai khu vuc co the dua dau len cao tai 2m so vai muc nuoc thap nhat (cao Im so vai muc nuac trung binh) va nuac riJt, dau bam tren mat cat tai mep nuac co the se bi nuac cu6n theo tham sau xu6ng hang met anh huong cua dong trieu di xu6ng Dieu co the giai thich cho su co mat ciia dau a h6 cat sau gan Imet ben ba bien Do hinh thai va vi tri dac biet ctia diem 16 (Hinh 2), miia d6ng huong gio thinh hanh la D6ng Bae va Bae; mua he huang gio chu yeu la Tay Nam, Nam va D6ng Nam do dau tii mat vinh Quy Nhon hay Dam Thi Nai bi song nuac day vao diem 16 se de bi mac lai hon la bi cu6n tra Co le vi the ma a khu vuc khae ciia vinh Quy Nhon khong thay dau 16 NhCmg ket qua nghien cuu tren mot lan niia khang dinh sir co mat nhiing tich tu dau a ngoai khoi be Phii Khanh, mot phan HC dang bj ro ri va phat 16 a Dam Thi Nai Tuy nhien, quy m6 phan b6 va miic cac tich tu nhu the nao can nghien cuu ty my hon KET LUAN Tren ca so nhung tai lieu tren, co the ket luan ve dau 16 a Dam Thi Nai nhu sau: • Dau a Dam Thi Nai dugc cung cap nhieu lan va tu nhieu ngu6n khae • La dau th6 chua qua xii ly, dugc sinh tu da me tu6i De tam, co nhiing dac trung ca ban tuong tu vai da me va dau th6 tir be S6ng H6ng va Nam C6n Son thuoc them luc dia Viet Nam • Dai phan b6 tricyclic terpanes ciia cac mau dau o Dam Thi Nai the hien rat ro su trgi ciia C24 tetracyclic triterpane so vai C26 tricyclic triterpane chinh la dac diem khae biet vai dau va da me a be Cuu Long • Mgt so mau co ngu6n g6c tu da me la set bien chiia VCHC nguon g6c bien la chu yeu Chiing co dau hieu sinh vat tuong tu vai dau co ngu6n g6c VCHC bien dien hinh tu Trung Dong nhung lai co dac trung rieng ciia dau dugc sinh tu da me a khu vuc chau A noi chung va Viet Nam noi rieng, chinh la su co mat rat ro ciia cau tu bicadinane dau a Dam Thi Nai Dau hieu sinh vat ciia chiing rat giong vai chat ehiet tu da me a 16 03 be Nam C6n Son • Co the dau tu cac tich tu a ngoai khoi be Phii Khanh di cu vao viing ciia vinh, tu day chiing bi ro ri va dugc dong trieu dua vao diem 16 TAI LIEU THAM KHAO Areshev E.G., Tran Le D6ng, Ngo Thuong San, 1992 Reservoir in fractured basement on the continental shelf of Southern Vietnam Tap chi Dia chat dau, S6 15 tr 451 465 406 Nhung thdng tin mdi ve digm Id dhu d Phm Thj Nai Thanh Quy Nhon - Binh Pjnh C Sladen, Nguyen Quang B6, 1992 Geological observation of Central VietNam: Implication for hydrocarbon prospectivity onshore and adjacent offshore area Joumal of Petroleum Geology Nguyen Thi Dau va n.n.k., 2001 Mot sd kit qud nghien ciru tiim ndng da me khu vuc be Phii Khdnh Tuyen tap bao cao Hgi nghi Khoa hgc Ky thuat Dau Vietsovpetro Nguyen Thi Dau, 2004 Ddc diim dia hod hydrocarbon tgi diim Id ddu Ddm Thi Ngi, thi xd Quy Nhon - Binh Dinh Luan van Thac sT, Truong Dai hgc M6 - Dia chat Ha Ngi Le Van Dung va n.n.k., 2001 Diiu tra ddnh gid sa bd ndng & Viet Nam Trung tam Th6ng tin Tu lieu Dau va Vien DAU Khi Hans Peter Nytoft, Jorgen A Bojesen Koefoed, Flemming G Christiansen, 1999 Oleananes or lupane? Reappraisal of the presence of oleanane in Cretaceous Tertiary oils and sediments Geochemical organic matter J.A Bojesen-Koefoed et al., 2005 Geochemical characteristics of oil seepages from Dam Thi Nai, Central Vietnam: Implications for hydrocarbon exploration in the offshore Phu Khanh basin Joumal of Petroleum Geology, Vol 28 (1), January 2005, p 3-18 J.J Traynor, C Sladen, 1996 Seepage in Vietnam onshore and offshore examples AAPG Kenneth E Peters, J Michael Moldowan, 1993 The biomarker guide interpreting molecular fossils in petroleum and sclent sediments 10 Phan Huy Quynh, Nguyen Huy Quy va n.n.k., 1980 Bdo cdo kit qud khdo sdt dia chdt & Ddm Thi Ngi, thi xd Quy Nhon Vien Dau Khi 11 Le Thanh va n.n.k., 1998 Addt cdc diim Id ddu Viet Nam Vien DAU Khi 12 Vien Dau Khi va GJI, 2000 Prospect/lead assessment on hydrocarbon potential of Tertiary sediments in Phu Khanh basin 13 Vien DAU Khi va GEUS, 2004 Integrated analyses and modelling of geological basins in Vietnam and an assessment of their hydrocarbon potential - First phase: Phu Khanh basin ... guide interpreting molecular fossils in petroleum and sclent sediments 10 Phan Huy Quynh, Nguyen Huy Quy va n.n.k., 1980 Bdo cdo kit qud khdo sdt dia chdt & Ddm Thi Ngi, thi xd Quy Nhon Vien... Thanh ph6 H6 Chi Minh 700km vl phia Bic, va each ph6 Quy Nhon 10km vl phia D6ng Bae, thuoc xom Hgi Giao, th6n Hgi Binh, xa Nhan Ly, ph6 Quy Nhon, tinh Binh Dinh Diem 16 da duge bilt din tir nhimg... fractured basement on the continental shelf of Southern Vietnam Tap chi Dia chat dau, S6 15 tr 451 465 406 Nhung thdng tin mdi ve digm Id dhu d Phm Thj Nai Thanh Quy Nhon - Binh Pjnh C Sladen,