THAIVI DO KHAI THAC D A U KHI OANH GIA NGUON G O C DAU KHI LO 05 2 VA 05 3 BANG KET QUA PHAN TICH SAC KY KHI, SAC KY KHOI PHO VA DONG V! CARBON MAU DAU VA KHI KS Nguyen Thj Bich Ha, ThS Ha Thu HiTorng[.]
THAIVI DO - KHAI THAC D A U KHI 05-2 VA 05-3 BANG KET QUA KY KHOI PHO V A DONG V! CARBON OANH GIA NGUON G O C DAU KHI LO PHAN TICH SAC KY KHI, SAC MAU DAU VA KHI KS Nguyen Thj Bich Ha, ThS Ha Thu HiTorng, KS Dao Trung Dung Vien Ddu khf Viet Nam Tom t i t Trong cong tdc tim kiem, thdm dd vd khai thdc ddu khi, nghien cvtu vehe thong dau Id nghien cCtu caban Idm nen tang cho cdc ddnh gid ve tiem ndng ddu cua mot be trdm tich Be trdm tich Nam Con San thugc them luc dia Viet Nam dd phdt Men cdc mo ddu khinhit: Dai Hung, Thanh Long, Bo Cdu, Nguyet Thgch, IVIgc Tinh, Hdi Thgch, Lan Tdy, Lan Do Tuy nhien, nguon goc vdt chdt hCfu ca vd si/phdn bo cua ddu tho be Nam Con San dang Id trdn trd cua cdc nhd dja chdt ddu IVIgt so van de van chUa ditac trd Idi nhtt nguon goc cua ddu mo, mite bien doi cHa vdt chdt hCfu cd, dieu kien lang dgng, toe trdm tich, ty le phdt Men nhieu han ddu Bdi bdo ddnh gid phan loai nguon goc ddu vd d L6 05-2 vd 05-3 Ket qud phdn tich sdc ky (GC), sac ky khoi (GCMS) vd dong vi carbon 13 cho thay ddu tho d gieng khoan Nguyet Thgch duac sinh tvfdd me co tnfdng thdnh thap chUa vat chdt hCtu ca ddm ho Tit khoa: Nguon goc, vdt chdt hOu ca, dau tho, dam ho, dong vi carbon, thi/c vdt bac cao, cCra so tgo dau, tfch tu hydroc pha tgo khf Tinh chat ly hoa cua dau thd/condensate Tat ca 21 mau dau/condensate deu cd ham lapng lifu huynh, vanadium va niken thap Mdi quan he ham lapng Danh gia, phan loai cac nhdm dau dga tren ket qua phan tfch chat vat ly, phan hda hpc va cac chi tieu phan tich chi tiet nha sac ky khi, sac ky khoi cua cac mau dau thd va condensate nham chi mdi tradng lang dpng va phan huy vat chat hau ca,mac dp bien ddi cua da me da sinh dau va condensate Dac biet ket qua phan tfch isotope cua cac mau khf va mau dau thd da lam sang td nguon goc dau/khf, mdi lien quan khf - dau va dau dau Ld 05-2, 05-3 va vung lan can da cd phat hien dau d cac gieng khoan: 05-2-HT-2X, 05-3-MT-1X, sulphur va dp API cho thay cac mau dau thudc loai dau B, C, D, E Theo mdi quan he giaa ty sd Pr/Phy va dp API thi cac mau thudc dau loai D, E Thanh phan hda hoc cua dau thd la yeu td quan trpng de phan loai dau thupc nhdm D hay E Theo phan loai cua BP Reseach Centre (Bang 2) neu dau thd cd nhdm hydrocarbon no > 70% thi cac dau dd thudc nhdm D va ngapc lai Bang cho thay tat ca dau thd/condensate cua Ld 05 thudc dau nhdm D dau dapc sinh t a da me chaa chu yeu la vat chat hiJfu CP dapc tach ta thgc vat bac cao 05-2-NT-1X, 05-2-B-1X, 05-2-KCT-1X, 06-LD-1X, 06-LT-1X 0BS1 cac tang chaa Miocene tren, Miocene giaa Sic ky va sic ky khoi va Miocene dadi Ket qua phan tich sac ky khf va sac ky khoi nhU la Ket qua phan tfch tfnh chat vat ly va phan hda dau van de nhan biet dang vat chat hffu cP cd mau hpc cua cac mau dau/condensate cua Ld 05-2 va 05-3 dau va mau da Pristane va Phytane dapc tach tCr nhanh dapc thdng ke d Bang cua Chlorophyll, sg cd mat cua hpp phan phin anh Trong sd 21 mau san pham thu thap tCr Ld 05 cd 13 mgc dp tang len cua hoat ddng vi khuan mdi tradng mau la condensate cd dp API > 45 (Bang 1) va mau dau oxy hda ban dau Tuy nhien ty sd Pr/Phy bj Snh hadng dd mau DST#3 (2.874 - 3.004m) d Ld 05-1 a va mau sg bien ddi cua da chaa vat chat hau cd, qua trinh RFT5 (2.864,5m) d gieng khoan 05-2-NT-1X la dau nang tradng Phytane dapc sinh nhanh hdn Pristane Vi (°API < 25), mau la dau binh thadng cd dp API thay ddi vay, ty sd giSm theo mgc dp tradng J)f so Pr/ khoang 25 - 45 Hau het cac mau dau d be Nam Cdn Phy cua day Isoprenoid dung de danh gia ve nguon goc, San deu cd ham lapng lau huynh, vanadium va niken mdi tradng cua vat chat hau ca Khi nhan biet cac dau vet thap, dd la dac trang cua dau cd ngudn goc vat chat hQu sinh vat cd dapc tren cac dai phan bd cua Triterpane va CP chu yeu tCr thgc vat bac cao Steranes til phep phan tfch sac ky khoi cd t h ^ chi 12 DAU KHi-SO 9/2014 PETROVIETNAM E u-i a a (N 00 fN -^t- o o -sr fN o o 00 »— V V V O o V O O o ^ fN O ] 00 ON I ^ fc I VO i ^ I O (N 1^ o" o" i n I r o I— 00 I VO I r\i ON fN o fN in •fi O : '? ^ ^- OO "^ vq ON rr, , - 10 i -.P fN fN 00 vo" 00 r^ ro m O 00 ro ON vo" ro vo" o OO o IT) 00 : fN "^r r o I r s ! 00 O "I ro rv ro I i n C3\ O ro ^^ VO o »— '— >-"• 00 0> o" t— Ov o rv 00 o' m in ON in^ o m vo" o vo" vo_^ in in : o fN o" vo I VO r^ fN rf) I no rv O ^•' vo h> o ON ro vo fN VO ro O vo" ro in vo VO ON 00 VO vd '" i 31 M I ! 00 m o VO 00 O ! o~ -§ vO 00 fN ro < O '3 VJ '3 nO).:.HT-IX-VUi« oo^•:.|fT_IX•MMw vdi Cj^ va C^g the hien d sa cd mat phong phu cua vat chat •M.:.N>.IXXU» •ll-l'CC-IX'S.lb ' MXO-lX'VUi* • MOBCtX'Oh •IIOKSTIIIX'UU.* hau CP luc dja Cau tCf T^ va T^ (Hinh 4b va 4c) la thdng sd danh gia mac dp tradng thanh, mac dp tradng •»-)-au>-ix tang thi cau taT^ chuyen sang T^ Thdng sd tradng Hin/i Bieu quan hi ty sd Pr/C^^ vd Ph/C^^ cua mau dau deu cd T^ > T^ cho thay dau dapc di thoat ta da me cd mac tradng kha cao • • et(ick04 I ^ B BkickOS ^ H BbxkOS • ^ Blodior • • • KodilO • • BI0CX11 • • HodilJ (Till Mil ill) / / / / J_ d cau tao Kim CapngTay phat hien mau dau thd RFT 3.057m va 3.069m tang da chaa Miocene glQa Ca hai mau deu cd ty sd Pr/Phy cao (6,4 va 5,34) Dai phan bd Steranes (m/z 217) va Triterpane (m/z 191) cua mau trinh bay d Hinh 5a (RFT 3.057m) va Hinh —* L.t-^i^'-'-04 MMirniX -OMJ-a M74MV« L* deu cd dac trang la giau Bicadinanes, ham lapng ằ >:tOôC-U -IU» 5b (RFT 3.069m) Tren dai phan bd Sterane va Triterpane i A " T s / T m Ratio A112-RVD-1X " •WMJT-Dt Oleanane la kha cao Thdng sd tradng (T^/TJ cua mau RFT 3.057m va 3.069m cho thay ca mau dau deu Hin/i 5.6/eu ^d c/uon hi chlsd Oleanane vd ty sd Ts/Tm dapc tach ta da me dang pha cufa so tao dau Sa phan bd cua dai hopane tren Hinh 5b khac vdi Hinh 5a la dai hopane md rpng taCj, - C^^ giam deu theo chieu tang DtTflt sd nguyen tCr carbon dieu dd cho thay dau dapc tach t a da me dapc lang dpng va phan huy mdi tradng cd LL LJI JIL tfnh khCrcaohan ([il.Ltl_.l I I OtTMC Cau tao Hai Thach cd mau condensate va mau dau Ket qua phan tfch sac ky hydrocarbon no (4 mau condensate va mau dau) cho thay dac trang phong phu LJJ JuiKIJMJj^ A J u l MJU cua dai n-alkane, ty sd Pr/Phy kha cao (5,43 lJULi_._ 6,93) cho thay da me sinh dau va condensate chufa chu yeu vat •7 RFTMC B chat hau ca tach tathac vat bac cao (Bang 1) •• Dai phan bd Steranes (m/z 217) va Triterpane (m/z -L IjlJLl JlL 191) cua mau condensate va mau dau la tadng t a liUL s a a s va dapc dac trang bdi sa cd mat chu yeu cua Bicardinanes va Oleanane Oieu cd the nhan thay tCf ty sd Oleanane/ Hin/i 4o Sdc /cy CI5+mau ddu thdd cdu tgo Mgc Tinh Cjg hopane cua tat ca mau condensate va dau la rat cao oAuKHfsd 9/2014 15 THAM DO - KHAI THAC D A U KHI (114,68 -130,79) Danh gia mac dp tradng cua mau condensate va dau dua vao ty sd T^/Tj +T^ Ty sd taPng doi cao (0,4 0,47) cho thay cac mau dau/ condensate dapc sinh t a da me dat tradng cao Diem khac biet giaa condensate/ dau cua cau tao Hai Thach vdi dau/ condensate t a Mdc Tinh, Kim Capng Tay va Nguyet Thach la tren dSi Triterpane (m/z 191) cd Cjg > Cjg hopane va sa cd mat ialCiiidealby doninant presence of lieUcaikianeand iimlaafMytiiJi oleanane oonfenb cua Cjj va C^^ Norhopane la dau hieu sinh hpc cua vat chat hau cP bien cd cac mau dau va condensate *-jjA^^«AUuyia_ 1106100 1116100 Hinh 4b Ket qud phdn tich sac ky khfvd sdc ky khoi mau ddu thd (DST#2, 3.075,5m) tdtdng chda Miocene tren gieng khoan 05-3-MT-1X Ket qua phan tfch sac ky khf tong dau mau RFT5 2.864,5m d gieng khoan 05-2-NT-1 RX cho thay phan hydrocarbon 05-3-MT-1X well nhe da bj mat Sac ky hydrocarbon no cho ket quS la ty sd Pr/Phy thap, dieu khac biet vdi cac mau dau da danh gia d tren lllil Dai Sterane dac trang bdi sa co C30 xoo »o •o mat cua cau tCf C^^ Methyl Steranes va Diasterane chi dau vet cua vat chat hOfu m/^191 ca dam hd va mdi tradng giau set Tren JL f «W^-.AJL, ^.IV^ JUuu_^^—-^J-*^ t SO »«^ dai Triterpane taang ddi giau Bicadinane a • 0 nhang vang mat Oleanane Nha vay, c6 1.00 90 •o Terrestrial Crude oil is similar distribution HC of DST#2 sample mte217 TO ao so «o aoj xo_| the dau dapc sinh tCf da me dam ho chaa hdn hpp vat chat hau cP algal thiic vat bac cao _A»J~AWJAA 30 &6m o e Hinh 4c Ket qud phdn tich sdc ky khf vd sdc ky khoi mau ddu thd (DST# 1C, 3.136,5m) Td tang chda Miocene tren gieng khoan 05-3-MT- IX Ket qua phan tich dong vj carbon cac mau khf va dau tho Tren bieu quan he giaa ddng vi carbon 13 cua khf methane va ethane •a (Hinh 8a), mau khf cua gieng khoan MTML RX lien quan den khf ddng hanh M 4* ML « pha cCfa so tao dau / ao M t •! M I ll I 1^ ^^^Ifci^ -Ji^-roiliii I, iiiiiod U7.1M« aiT rti pha tao khf khd Ket qua phan tScaiSnuie 7* (t 1XR, 06-LT-2X (1.662 10 fe jJmj^ cua gieng khoan 06-LT-1XR va 06-LT-1XR '^^V^MaK'iJ*Mi*^'^A>.*i«4^WnA^W.A«^ iio6ioa' DAU KHi-so 9/2014 1.672m), 06-LT-1XR va 06-LT-2X (1.682m) cho thay cac mau khf ititI00 Hinh Sa Ket qud phdn tich sdc ky khoi mau ddu thd (RFT, 3.057m) td tang chda Miocene gida gieng khoan 05-2-KCT- IX 16 tfch ddng vj carbon cua mau khf DST va RFT tCr gieng khoan 06-LT-OBS1, 06-Lr- ML la Khf t a gieng khoan HT-1X la khf sinh la hon hpp dau md vdi khf sinh hda Sii cd mat khf sinh hda cac mau khf cho thay cau tao chufa khf la cau tao hd PETROVIETNAM Khf ta gieng khoan 06-LT-OBS1, KCT-1X ST1, LT1X la khf lien quan den pha cCfa sd tao dau Khf ta gieng khoan HT-1X dapc sinh ta pha tao khf khd Phan tfch ddng vj carbon ta cac mau khf da chi ra: Ngudn goc khf, khf dapc sinh ta cac pha chuyen hda vat chat hau ca cua da me hay khf sinh hda Kha nang tfch tu hydrocarbon cua bay chaa Trong tim kiem tham dd, danh gia tiem nang sinh dau khf la mot yeu td CP ban de nghien cufu ve he thdng dau khf Trong khai thac dau khf, xac djnh kha nang lien thdng via, md khai thac la yeu td rat quan trpng xay dang md hinh md Ket qua phan tfch ddng vj carbon 13 cac mau dau la cd sd quan trpng de chi ngudn goc dau Hinh 8b la bieu ket hpp giaa tyf sd Pr/Phy cua phep phan tfch sac ky khf phan doan hydrocarbon no vdi ket qua phan tfch ddng vj carbon 13 cua dau thd Bieu da chi ngudn goc vat chat hau cd cua da me da sinh dau d gieng khoan NT-1 RX la da me chaa vat chat hufu cd dam hd Oa me sinh dau d gieng khoan HT-2X, MT-1X, KCT-1X la da me chufa chu yeu vat chat hOu cd tCr thac vat bac cao Dieu nay, phu hpp vdi ket qui phan tfch GCMS da danh glad tren mlz^9^ look : 90J 80 70J 6oJ soj 40 30J 30i 10 OJ fc -I »o>oo 217.1»5« lom 1» I iTooToo -* m/z 217 ^>'- '^•'^'''•^''^^'J^^'fiJu.^^'AJ^^^ ijoSl 1 s 00 Hinh 6a Ket qud phdn tfch sdc ky khoi mau condensate (MDT, 2.956,5m) tdtdng chda Miocene tren gieng khoan 05-2-HT- IX C29 C30 Hinh 6b Ket qud phdn tfch GCMS mau condensate (MDT, 3.195,8m) td tang chda Miocene gida gieng khoan 05-2-HT-lX D&U KHi - Sd 9/2014 17 T H A M D O - KHAI THAC D A U KHI 100^ 90 00 70 60 50 40 30J 20.- I 10 Ket luan m/z 191 Ket qua phan tfch sac ky khf, sac ky khdi cua cac mau dau thd/condensate u,i va dong vj carbon 13 cua cac mau dau ^JLJUU,*»AK.JL(UA khf la ca sd quan trpng de danh 30:O0 40:00 217.19SS 3:2 F:2 lOOk 90 m/z 217 Bicadinane (peak W,T,R) 80J gia ngudn gdc vat chat hau co cua dau va khf Daa tren ket qua phan tfch tfnh chat cua dau/ 70 «0 SOJ condensate, phan nhom, 40J 30 20 sac ky khf va cac dau hieu sinh vat |a.»- 30:0 -2>5 -39JD -^S -3iJ) -275 -274 -KS -2SA • 1667m,LT-2X S^ Tong dau Hinh 8b, Phan loai nguon goc dau bang ket qua dong vi carbon Ld 05-2 va 05-3 Characterisation of crude oils and gas in blocks 05-2 and 05-3 - Nam Con Son basin using biomarkers, gas chromatography and carbon isotope analysis Summary Nguyen Thi Bich Ha, Ha Thu Huong, Dao Trung Dung Vietnam Petroleum Institute Research on petroleum systems is the basis for evaluating the potential of a sedimentary basin during explo tion and exploitation processes In this, results from analysed samples are very useful In the Nam Con Son basin shore Vietnam, several oil and gas fields have been found such as Dai Hung, Thanh Long, Bo Cau, Nguyet Thach, Tinh, Hai Thach, Lan Tay, Lan Do, etc However, the origin of organic matter and the distribution of crude oils in N Con Son basin still pose difficult problems for petroleum geologists Certain questions remain to be answered, as the origin and transformation level of organic matter, depositional conditions, rate of sedimentation or even w geologists have not discovered oil accumulations leading to gas being found more than oiL In this paper, the auth use advanced analysis technology and combine effective analysis parameters to evaluate and classify the origin o and gas in Blocks 05-2 and 05-3 According to the results ofGC, GCMS and carbon-13 isotope analysis, crude oil at Nguyet Thach well is believed to be generated from a low maturity source rock containing lacustrine organic matt Key words: Crude oil, organic matter, terrestrial, lacustrine, carbon isotope, source rock, oil w/indow DAU KHi-so 9/2014 19 ... 1682m,LT-2X -».0 - 32 5 -3M -31 5 -3U - 30 5 -30 X> -2> 5 -39 JD -^S -3iJ) -27 5 -27 4 -KS -2SA • 1667m,LT-2X S^ Tong dau Hinh 8b, Phan loai nguon goc dau bang ket qua dong vi carbon Ld 05- 2 va 05- 3 Characterisation... thd (DST #2, 3. 075,5m) tdtdng chda Miocene tren gieng khoan 05- 3- MT-1X Ket qua phan tfch sac ky khf tong dau mau RFT5 2. 864,5m d gieng khoan 05- 2- NT-1 RX cho thay phan hydrocarbon 05- 3- MT-1X well... condensate (MDT, 2. 956,5m) tdtdng chda Miocene tren gieng khoan 05- 2- HT- IX C29 C30 Hinh 6b Ket qud phdn tfch GCMS mau condensate (MDT, 3. 195,8m) td tang chda Miocene gida gieng khoan 05- 2- HT-lX D&U