Tuygn tap bao cao Hdi nghj KHCN "30 nam D^u khi Viet Nam Cff hdi mdi, thach thiic mdi" 913 DANH GIA HIEU QUA CONG TAC NGHIEN ClTU HU^6NG VAN DONG CUA NÛ OfC BOnvI EP B A N G C A C C H A T C H I THI 6[.]
Tuygn tap bao cao Hdi nghj KHCN "30 nam D^u Viet Nam: Cff hdi mdi, thach thiic mdi" 913 DANH GIA HIEU QUA CONG TAC NGHIEN ClTU H U ^ N G VAN DONG CUA NU^OfC BOnvI EP B A N G C A C C H A T C H I THI MO BACH H Hoang Dinh Tien, Nguyen Thiiy Quynh, Hd Trung Chau, Vii Hoang Long XNLD Vietsovpetro TOM TAT Tir ndm 1996 din ndm 2001 da tiin hdnh thir nghiim ldn v&i logi chi thi: chi thi mdu; chi thi hod chdt bin nhiet vd chi thi ddng vi phdng xg vd vi lugng ddu Nguyen ly cua cdc phuong phdp ndy la chdt chi thi dugc hod tan nu&c bom ip vd bi nu&c bom ip dua t&i giing khai thac Khi gap chi thi & cdc giing khai thac ta cd thi xdc dinh dugc hudmg van ddng vd tdc cua nd, tinh bdt ddng nhdt cua ddi tugng, v.v Kit qud cho thdy, niu dp dung cdc phuang phdp ndy tir ddu bam ep thi hiiu qud cao hon nhiiu vd ddc biit ddi v&i cdc via chua da luc nguyin Vdi muc tieu tri ap simt via, XNLD Vietsovpetro da tien hanh bom ep nude bien vao via diu Viec kiem tra hudng van ddng cua nude bam ep can thiet vdi muc dich dieu chinh che bom thich hgp De thda man muc dich neu tren, can tien hanh ung dung cac phuang phap: Chi thi mau Chi thi hda chat ben nhiet Chi thi ddng vi Thay ddi vi lugng dau Nguyen ly chung cua cac chat chi thi la boa tan nude bom va dugc nude bom mang theo qiia trinh van ddng Nude den gieng khai thac nao thi se gap chat chi thi d gieng dd Vi vay cac phuong phap chi thi cho phep xac dinh cae nhiem vu cu the sau day: Xac dinh chieu hudng va tdc van ddng cua nude bom ep Xac dinh tinh bat ddng nhat ciia via, giiia cae ddi vdi xac dinh miic ngap nude eiia cac gieng khai thac chiu tac ddng true tiep ciia gieng bom Ddi vdi cae ddi tugng da lue nguyen cd the su dung cac chat chi thi de theo ddi nude van ddng via va he thdng diit gay Cdn ddi vdi mdng - mot ddi tugng nut ne va hang hde cd phiic tap hon cd the theo ddi dac diem ciia khe nut hang hde, dac diem bien ddi ciia cac he maema va dac biet d dilu kien nhiet cao (125 ^ 180°C) Tir nam 1996 tdi dau nam 2001 da thuc hien giai doan thu nghiem vdi eae chi thi neu tren (Bang va Hinh 1) Mdi giai doan dugc iing dung mdt sd loai chi thi d mdt gieng bom ep va an dinh cac gieng can quan sat Theo ddi su xuat hien cac chi thi d cac gilng khai thac va thdi gian di tir gieng bom tdi diem quan sat Ap suit bom, luu lugng chit chi thi dugc nghien ciiu ky phii hgp vdi dieu kien ciia via va dac dilm cua tung loai da chiia Dudi day md ta timg giai doan nghien ciiu va kit qua eiia nd 914 Danh gia hieu qua cdng t^c nghign cuu hudng van dgng ciia nude bom ep bang cac chat Bang 1: Cac giai doan nghien cuu huung van dong ciia nuoc bo'm ep GK Khdi lugng Ap sudt Th&i bam Hda chdt thu GK theo ddi hda chdt de bam, P, Giai dogn gian thu hda nghiem bom at nghiem chdt 14,64,65.68, 200 lit 200 107 193 (300 ppm) 801,802,803, 160 lit 809,810,811, 6/1996 200 804 I (1025 ppm) 803,60,91 Fluorescene Hoa pham 402, 420, 422, 416 lit mau 4/1997 200 421 417,402 (200 ppm) 416 lit 417,426 425 200 (200 ppm) 14,65, 113, Selitra ^ 8/9/ 66,73, 193, lOT 200 107 ammonia 1998 64,68 801,811,802, lOT Rodanide 23 -^ 24/ 200 804 803,60 (300 ppm) ammonia II 9/1998 Hda pham 25 ^ 30/ 504, 503, 505, 200 Thiomosevina 116 ben nhiet 108 9/1998 401, 1,403, 404,407,411, Nitrat 11 ^ 13/ 120 T (42%) 225 405 ammonia 412,430,450, 11/1999 904,920 II 420, 2, 409, Rodanide ^ 17/ 225 225 T (40%) 417,422,402, Hda pham 455 ammonia 11/1999 ben nhiet 428, 426 IV Hat cau GTP gan ddng vi 30/4/ Dong vi 347 g Khoang due Id 905 240 1999 Ba-131 ddng phdng xa 4,46mCi 3413-^ 4075m (kiem tra vi Au-198 tiep Hat cau GTP nhan cua 21h20' gan ddng vi 970 g Khoang due Id 914 200 gieng bom 2/5/1999 Ba-131 dong 14,62mCi 4000 ^ 4320m ep) vi Au-198 10 Ci 100 ml 19h7' 31 beta60,810,902, HTO (Tritium) 921 250 3/1/2001 isotope +100 904,901,920, V ml gamma 918,923,910, Ddng vi isotope 412,407,411, phdng xa KS'^CN lib 914 150 Ci 404, 430, 450, 4/1/2001 100 ml 803,801 14h42" 911 100 Ci 4/1/201 100 ml 915 Tuygn tap bao c^o HQi nghj KHCN "30 nam Dau Viet Nam: Cff hdi mdi, thach thuc mdi" /A I ôin*.ô'S*I ã / / / / // PY^'^ I hSm /C " • ^ ••€*" • 4! ( $ • K • - Ci^nf; klioun K n n cliill t h i thj (Olijitmcn bu int'>nj;) - GiC'nfi kh'Kin ihcoikli i.hiU Iij;i>M-ip hjf miVif;) -Cii>r)}2 ichiun phai hi^,lu,7c chiil ,:hi Ih)'OligmL'Pi h^ jTxinpi - CJI|I fiiCiip c i li,) till ciy ca.i Q p piping c(i d^ Iin ciy Ihip Hinh 2: Su phan bo vi tri cac gieng bom chat chi thj mau va gieng quan sat Giai doan 1: Giai doan 1996 -1997 su dung chat chi thj mau Fluorescine Bom chit chi thi mau vao GK 107, 421 va 425, 804 vdi luu lugng phii hgp tilp nhan ciia gieng bom ep Sau dd theo ddi sir xuat hien chi thi d cac gieng khai thac xung quanh Xac dinh chat chi thi mau dugc tien hanh bang may fotocolorimeter vdi bude sdng 560mm Thdng sd la he sd hap phu anh sang (Kjp) Gia tri phdng ban dau chua cd chat chi thj la K^p = 0,003 -^ 0,005 Cac gia tri ldn hon cac gia tri la gia tri di thudng tiic la cd chat chi thi mau (thudng vdi gia tri 0,038 -^ 0,097) Tir cum gieng 107 chi phat hien chat chi thj mau d cac gieng 64, 14, 102, 68 va 193 Cdn d GK 61, 65 phat hien khdng deu Trong dd GK 14, 64, 193 khai thac d ddi tugng Oligocen dudi cdn GK 61, 102, 65 khai thac d mdng, GK 68 khai thac d Oligocen dudi nhung khdng cd ldp chan giiia mdng va Oligocen dudi nen dau di vao gieng tir hai ddi tugng Oligocen dudi va mdng Tdc chuyen ddng dugc tinh nhu sau: Trong dd: L: Quang dudng di ciia chat chi thi t: Khoang thdi gian tu bom tdi liic xuat hien Ngoai cdn tinh tdc chuyen dich tren mdt don vi ap suat: K.i = L t(Pi,-PJ 916 Danh gia hieu qua cdng t^c nghign ciiu hudiig van ddng ciia nude bom ep bang cac chat Trong dd: Pb: Ap lire bom PJ: Ap lire day Vi du md hinh tinh toan thi hien d Hinh 2, Tir dd xac dinh dugc tdc chuyin ddng cua nude bom Tu 107 tdi cac gilng nhu sau: tdi GK 68 la 10,80m/ngd, tdi GK 193 la 20,280m/ngd la hudng chii ylu He sd chuyin dich la 2,04 va 2,986m/ngd/lMPa tuong ung (Bang 2) Ngoai ra, viec theo ddi chi thi cdn cho phep xac dinh nude d vdm Bae la nude bom cho ddi tupng Oligocen dudi cdn tham nhap ca vao ddi tugng mdng tiic la vao cac gieng 65, 102 va 61 (Hinh 4) Bang 2: Cap gilng bom vui cac gieng quan sat toe van dong ciia nuoc bom ep Giai doan V, m/ngd Cap gieng * Cap gieng * V, m/ngd 107- 14 321 107- 14 321 107- 102 360 107- 193 299 107-65 41 107-65 41 I I Giai dogn 24 II 24 369 107-61 320 107-68 10,8 107- 193 20,3 107-73 33 804 - 802 49,2 804-811 1563 7,5 804-801 57 455-417 58,2 421 -409 8,2 421 -422 8,2 421 -402 8,2 421 -420 10,6 421 - 4,3 425-417 5,3 ••> @ 107-66 51 III 62,5 Ghi chu: * Cap gieng cd tin cav / • Hinh 3a: So vj tri gieng khoan theo doi chi thi man o MSP-8 Well -0,13 Effective porosity - ^ — Effective inictviess Hinh 3b: So vj tri gieng quan sat o vom Trung tam 917 l u y e n tap bao cao Hdi nghj KHCN "30 nam Dau Viet Nam: Cff hdi mdi, thach thiic mdi' 3200 • 3400 3400 3500 3494 3600 ±3697 Tac dpng tdi GK 14 3715^ Tac apng t6i GK 102 3800 H, m p^ Oligoxen tr6n i Ddi lay dau 3800 p^ Oligoxen di/di fp''^ Ldp set vat nhon M6ng Ddi bom H, m Hinh 4: Su van dong cua nuuc bom 6" cac GK 62,107 vom Bae mo Bach Ho Chat chi thi dugc ap dung d cum gieng 804 cho ddi tugng mdng (Hinh 5) Chat chi thi mau chi dugc phat hien d GK 802 vao thdi diem, chiing td chat chi thi di theo dudng van ddng vdi cac van tdc trung binh la 49,20m/ngd va 7,49m/ngd O cac gieng kbac khdng phat hien Hucmg van il(>ng cua chSi long 01 Ky hifu -^ -)!-> ~-).-^ _> 0430 Cuidng 36 manh Ci/dng /y//y>A W^TTA v//////////////////////////m YZZST 51.3« 1468 1S6?{ 0.68 0,03 _S3_ K.I i i KM K.ni i ^ ! i ; \ i \ K.VI K.V K.IV i i i i i j i \ \ \ \ i j j \ i j ^1 i If li S i i i i j ;/ :/i ^ , ui d$ s§u(m) Hinh 11: Mat cat tiep nhan nude bom ep gieng khoan 905 (phuong phap danh dau dong vj phong xa) Tir cac ket qua neu tren cho phep riit ket luan: Khoang tiep nhan ddng vi danh dau kha phii hgp vdi khoang cd kha nang tiep nhan cua gieng (theo tai lieu carota nhiet va ddng) - Lugng phdng xa danh diu khdng cao 4,46 ^ 14,62 tiic la an toan cho mdi trudng (khdng bam vao cac thiet bi dau gieng va may do) - N I U cac phuang phap dia vat ly cdn nghi ngd thi nen ap dung phuang phap ddng vi phdng xa danh dau nay, vi nd cd nhay cao va xac dinh chinh xac cac khoang tiep nhan nude ciing nhu ty phan ciia nude bom ep Giai doan 5: ITng dung chi thj dong vi phong xa Phuang phap dugc ap dung d gilng (GK 921, 914, 911 vdi chat khae (Bang 1) Nguyen ly ciia phuang phap cung gidng nhu phuang phap ap dung chat chi thi miu va chi thi hda chit bin nhiet Chi kbac hda chat d day la ddng vi phdng xa Dac tinh cua nd la : De boa tan nude Cd the bi phan buy chiit it bom nhung bin dieu kien nhiet via, ben cd tac ddng hda, vat ly va vi sinh it bi da hap phu va phan pha De phan tich va de phat hien Cach tinh tdc van ddng ciia nude: 924 Danh gia hieu qua cdng t^c nghien ciiu huoTig van dpng cua nude bffm gp bSng c^c chht_ Trong dd: L: Quang dudng chat chi thi di qua t: Khoang thdi gian xuat hien Tinh tdc tham ciia kenh dan: K = [e.f.S^.i^.L^] /AP.t Trong dd: e: He sd tiiy thudc vao miic khuyech tan ciia chat chi thi vdi mdi trudng kenh dan Doi vdi da mdng mit ne hang hde d cau tao Bach Hd, he sd dugc tinh la 0,1, tham chi cdn nhd ban f: Do rdng S^: Do bao hda nude AP: Chenh ap kenh dan t: Thdi gian chat chi thi di qua kenh dan Ket qua theo ddi dugc ghi lai Bang va cac Hinh 12, 13 Bang 5: Cap gieng bom voi cac gieng quan sat toe van dong cua nude bom ep Giai dogn Chdt ehi thj Cap gieng * m/ngd 921 -920 374 131 13 1001 19 253 35 132 HTOTritium V i ngd 921 -412 V Giai doan Chdt chithf Cap gieng * 911 -412 V 911 -904 u V, i ngd m/ngd 26 106 80 34 132 21 30 83 102 25 134 15 583 o 86 71 66 26 115 15 28 125 60 807 121 25 20 221 KS'^CN 73 62 400 21 95 33 61 81 25 921 -901 914-60 914-904 cn 911 -920 911-60 Ghi chu: * Cap gieng co tin cay Tuygn tap bao cao Hpi nghj K H C N "30 nSm Phu k h i Viet N a m : C o hdi m d i , thach thiic m d i " Recovered HTO activity, 921- 412 Recovered SCN activity, 914 - 902 Time wnce Injection, d Ttme since injection, d Recovered HTO activity, 921- 920 Recovered SCN activity, 914 - 920 —OC3G33fe3Ki Time since injection, d T f m o since injaction, d Recovered HTO activity, 921- 902 30 60 90 Recovered SCN ctivrty, 914 - 901 0.0 O— 120 Tim« since injedion d Time sine* tnjection, d Recovered HTO activity 921- 901 Recovered Co/(CN)6 ctivity, 911 -904 Êã 0.7 ô 30 60 0, 30 90 60 90 120 Time a)nc« injection, d T i m e mncM injection, d Recovered Co/(CN)6 Ctivity, 914-412 Recovered HTO activity, 921- 0)4 U 02 - S 0.1 £03323333333333^ GXi