Nshien ciru, Phdt trien va 6ns duns Cons nshi Vdt lieu (KC 02/06 10) Hd Noi 27/11/2009 T H U NGHIEM B O M EP HON HOP CHAT HOAT DONG BE M A T v O l PHU GIA POLYME A N 125 TREN MONG M O DONG N A M RONG[.]
Nshien ciru, Phdt trien va 6ns duns Cons nshi Vdt lieu (KC.02/06-10)- Hd Noi 27/11/2009 T H U N G H I E M B O M EP H O N HOP C H A T H O A T DONG BE M A T v O l PHU GIA P O L Y M E A N 125 TREN M O N G M O DONG N A M RONG V A D A N H GIA H I E U QUA KINH TE-KY THUAT Le Kim Hung , Nguyln Minh Toan , Le Dinh Lang , Pham Duy Khanh va Nguyln Phuong Tung Vien Khoa hoc Vat lieu Ung dung, Mac Dinh Chi, Quan 1, Tp Hd CM Minh, Viet Nam Tel: (08) 823 7927, Fax: (08) 823 6073, email: nptung@vast-hcm.ac.vn Vien nghien cuu khoa hoc va thiet ke, X N L D "Vietsovpetro" 105 Le Loi, Vung Tau, Viet Nam 2 1 Tom tat Bdi bao trinh bay nghien cuu nang cao hieu qua day dau bom ep hon hop chdt hoat dong be mat (HDBM) vdi phu gia polyme AN125 a dieu kien mong mo Dong Nam Rdng (DNR) tren mo hinh via Ben canh kit qua thu nghiem tren mdu loi, hieu qua gia tdng he so thu hoi dau dugc danh gid tren mo hinh thuy dong luc hoc cdc dieu kien khai thdc ciia cd he thong mo tren co so tinh toan dua tren phan mem md phong bang may tinh Ket qua day dau tren mdu loi cua thi nghiem cd gid tri tdng trung binh la 6,9% vdi thi tich nut hdn hop chdt HDBM (polyme) la 0.15 PV d nong 1000 ppm Kit qua gia tdng he so thu hdi dau tren md hinh thiry ddng luc hoc tinh toan tren may tinh bom ep nut hdn hop HDBM IAMSM2-P Id 3.4% Vdi kit qua md phong nay, hieu qua kinh ti - ky thudt dp dung cong nghi bom ep nut dung dich HDBM IAMS-M2-P dugc tinh cho phuong an vdi khoang thdi gian bom keo ddi khac diu cho thdy hieu qua kinh ti mang lai rat khd thi Day la co sd di xay dung ki hoach thir nghiem cong nghiep thdi gian sap tdi I GIOl THIEU Nang cao he sd thu hdi dau la muc tieu quan trong cong tac dilu hanh quan ly md nham khai thac tai nguyen dau hieu qua va ben vung Qua trinh dac biet quan san luong dau tai cac md da chuyen sang giai doan sut giam sau thdi gian khai thac thu cap tuc la da bom ep hoac nude vao via nham tri ap suat via Hieu qua ciia qua trinh day dau bang nude se sut giam sue cang be mat giua hai pha dau-nudc ldn, ty sd dd linh ddng nudc-dau cao, dac biet da dinh udt diu va dau cd nhdt cao, chua nhilu nhua, paraphin va asphanten Trong cac phuong phap tac ddng ly hoa nham nang cao he sd day diu [1], d i tai di sau vao nghien cuu cac chat HDBM va phuong phap bom ep chiing vao via d l nang cao hieu suat day dau nhd cac ca chi tac ddng ciia chat HDBM: giam sue cang b i mat (SCBM) giua hai pha dau-nudc xudng gia tri rat thap, cai thien tinh dinh udt ciia da ddi vdi nude Trong thuc t l , nhilu loai diu thd cd ham luong nhua va asphanten cao din din cd nhdt cao (khoang cP d 91°C ddi vdi diu mong DNR) Ngugc lai, nude bom ep cd nhdt r i t thip (0.38 cP d 91°C) nen ty sd linh ddng giua nude va diu qua ldn (khoang l i n ) din din hieu qua diy diu khong cao D l cd t h i giam SCBM giua hai pha diu va nude nham tang hieu qua day dau, ding thdi tang he sd quet, ngudi ta ap dung phuang phap bom chit H D B M va polyme (SP) Bom ep SP la phuang phap hua hen dem lai hieu qua cao ma kha nang thu hdi dau cd the len den 70% luong diu du lai via sau qua trinh khai thac thu cip Trong hdn hop he HDBM-Polyme cd hai vung cd kha nang lam cho SCBM giam dd la vung ndng dd chat HDBM thap (0.1-0.2%) va vung ndng chit HDBM cao (2-10%) [2] vung ndng chat HDBM thap la vung cd ndng chat HDBM nam gin vdi ndng mixen tdi han (CMC) Ben canh do, lugng chat HDBM di chuyin tir pha nude din pha diu ciing anh hudng tdi qua trinh giam SCBM vung ndng dd cao thi pha vi nhu tuong d chit long 100 Nghien ciru Phdt triin vd ting d u m C d m n s M V d t M u < - - °)KC 02/06 ] M Noi 27/11/2009 se hinh ciing voi sir tdi han ciia dau va nude bien Nhu vay, ap dung phuong phap cd the thu dugc hieu qua day dau cao nhien can mot lugng ldn polyme phii hop va giua hai nhdm hda phim phai cd sir tuong hgp tdt Dieu din den chi phi se rit cao polyme rat dat va thudng rat tdn kem de lua chon mot loai polyme tuong hop tdt vdi chat HDBM su dung cho cac via cd nhiet cao, dd mudi va cirng cao [3-4] Mot sd nam gin day, mot sd nha nghien cuu da de xuat dua mot lugng nhd polyme phu hop vao dung djch HDBM de bom ep Khi dugc trdn l l n va bom ep vao via, giua chat HDBM va polyme cd the xuat hien hieu img hgp troi cd kha nang gia tang cac uu viet ciia ca hai phin chit HDBM va polymer Trong qua trinh dich chuyin via, polyme va chit HDBM se tdn tai cac pha rieng biet, polyme se bi bly lai tai nhung ddi cd thim cao chat HDBM hap phu va tuong tac tren be mat giua diu va nude Nhu vay, ben canh kha nang bao tdn cac ca che tac ddng ciia chat HDBM, dd nhdt ciia dung dich bom ep ciing dugc cai thien, dan den cai thien he sd quet va ket qua la gia tang them luong diu thu hoi duac.[56], Trong cong trinh nay, chiing tdi da nghien cuu danh gia hieu qua thu hdi diu bom ep hdn hgp chat HDBM da dugc tdi uu hoa [ 7] va polyme tren md hinh m l u loi va tren md hinh thuy ddng lire hoc ciia via md phong bang may tinh n THUC NGHIEM Hda chdt • IAMS-M2: he chat hoat ddng be mat da dugc tdi uu hoa; • Polyme AN125, SNF, Phap; • Nude bien vung md DNR; • D i u thd DNR phuc hdi dd nhdt (80% diu thd GK201-RC2 + 20% d l u hda), nhdt cua dlu d 91°C la 2,307cp Thiet bi • Thiet bi SCBM theo phuang phap giot quay, model 500, (Temco, USA); • Thilt bj dd nhdt Brookfield DV-DI Ultra, My • Cac binh thuy tinh chju nhiet va chju ap (ACE Glass, My) • Tu dieu nhiet (Shellox, My) Khao sat cdc he IAMS - M2 vdi phu gia cai thien dp nhdt AN 125 theo cdc ndng dp khac He chat HDBM IAMS-M2 dugc phoi trdn vdi polyme AN 125 d cac ndng dd khac nude bien va dugc u cac ampul thiiy tinh chiu nhiet sudt 31 Danh gia tinh tuong hop, ben nhiet ciia cac he m l u thong qua quan sat ngoai quan, SCBM va dd nhdt ciia he sudt qua trinh li nhiet Danh gid hieu qua tren mo hinh thiiy dpng luc hoc Day la md hinh dugc xay dung tren ca sd md hinh dia chit than dlu mong va vi vay t h i hien cac dieu kien dja chat-vat ly via ciia mong gin vdi thuc t l han ca Md hinh da dugc sir dung phuc hdi lich sir khai thac va du bao cac chi sd cong nghe khai thac ciia doi tuong thdi gian thuc hien "Chinh xac hda sa dd cong nghe khai thac va xay dung ting mong khu vuc Ddng nam md Rdng" nam 2009 101 Nshien ciru Phdt trien va tins duns Cons nshe Vdt lieu (KC.02/06-10)- Hd Noi 27/11/2009 Theo tfnh toan, the ti'ch dung djch chat HDBM bom vao via phai chilm 15% thd tich rdng chua dlu cua than diu Tren md hinh dieu khong thuc hien dugc vdi nguyen nhan don gian la the tich via qua ldn va luu lugng bom cua cac gieng bom bi han chi D l giai bai toan ta thuc hien bom dung dich chat HDBM theo phuong an khac nhau: bom thang, thang, nam, 1,5 nam va nam Sau bom xong dung dich H D B M tilp tuc bom ep bang nude thudng cho tdi het thoi ky khai thac Tdng san luong dau thu hdi theo cac phuong an bom chat HDBM so vdi tong san lugng diu thu hdi bom nude thudng khong cd chat HDBM III KET QUA VA THAO LUAN Khao sat cdc he IAMS - M2 vdi Phu gia cai thien dp nhdt AN125 theo cdc ndng dp khac Tren ca sd ket qua khao sat tinh tuong hgp, ben nhiet ciia mot sd phu gia polyme chm nhiet cao da dugc thuc hien trudc dd d 128°C[7], chung tdi da lua chon polyme A N 125 lam phu gia cai thien dd nhdt cho he chat HDBM IAMS-M2 vdi phan cac mau khao sat dugc trinh bay bang Ket qua khao sat su thay ddi nhdt va SCBM giua hai pha dau / dung dich chit HDBM qua trinh li d nhiet dd 91°C - via DNR dugc trinh bay hinh va hinh Bang Thanh phdn cdc mdu khao sat Thanh phan, ppm Mau IAMS-M2 A N 125 900 100 850 150 800 200 750 250 700 300 650 350 600 400 U, CP -Miu -Min Thai gian, - Mi u -*- Miu - Miu - Miu —i— Miu Hinh Su thay doi SCBM theo thdi gian u sau 31 d nhiet dp 91°C - via DNR Hinh Su thay doi dp nhdt theo thdi gian u sau 31 d nhiet dp 91°C - via DNR Tir cac ket qua tren, chiing tdi thay mau vdi phan he chat HDBM IAMS-M2 800 ppm va A N 125 200 ppm on dinti nhit qua trinh li, ca ve su giam SCBM, ca v i dd nhdt Mau se dugc lua chon de tiep tuc thir nghiem bom ep tren md hinh miu loi mdng DNR vdi ky hieu IAMS-M2-P Danh gid hieu qua tren mo hinh thuy dong luc hoc Trong nghien cuu kha nang ung dung cong nghe tac ddng ly-hda ciia chit HDBM IAMS-M2-P de nang cao he sd thu hdi dau than dau tan mdng Ddng nam Rdng, cac mau dung djch chat HDBM dugc thu nghiem phong thi nghiem Cac thi nghiem diy diu 102 Nghien cim Phdt triin vd duns Cone nshe Vdt lieu (KC.02/06-10)- Hd Noi 27/11/2009 bang dung djch chit HDBM dieu kien via dugc tien hanh tren cac md hinh lam tir mau loi Cac nghien cuu thi nghiem sau thuc hien nhieu lan cho dugc ket qua tdt ciia phuong phap He sd gia tang thu hdi dau dat dugc khoang tir 6,04 din 8,29%, trung binh la 6,9% (bang 2) Tuy nhien, can nhan thay rang cac nghien cuu tren nhirng md hinh mlu loi cd kich thudc nhd hon rat nhieu so vdi kich thudc via cd the khong hoan toan phan anh hit d mire dd toan cue tat ca cac qua trinh thiiy ddng luc hoc xay dieu kien via va cac yeu td dia chat - vat ly anh hudng len he sd thu hdi dau nhu bat ddng nhat phan bd da chua, tinh chat tham loc ciia da chua, phan bd tuong ddi giua cac gieng bom va gilng khai thac, chuyen ddng ciia chat luu via Vi vay, danh gia hieu qua thu hdi dau tren md hinh thiiy ddng luc hoc da dugc tinh toan dua tren phan mem md phong tren may tinh Lugng dau thu hdi them ciia tirng phuong an bom chat HDBM tinh toan tren md hinh thiiy ddng luc hoc trinh bay tren hinh 3, he sd gia tang tru lugng tuong ling trinh bay tren thi He sd gia tang tru lugng thu hdi dau bom luong dung dich HDBM vdi ty le 15% t h i tich rdng tinh toan bang phuong phap ngoai suy ket qua tinh toan cho cac khdi lugng bom khac Bdng Ket qua thuc nghiem bom ep dung dich chdt HDBM IAMS-M2-P tren md hinh via lam tir mdu loi Sd md Dd tham da theo hinh dau, mD Dd rong, ph.d., Thu hdi Thu hdi Bao hda Bao hda dau bom bom nude tan du, dau tan du, HDBM, AD nude, SOB, ph.d SOH, ph.d AG, ph.d ph.d Gia tang AD, ph.d Chat HDBM IAMS-M2 ndng dd 0.1% (lOOOppm) 291 411 0.034 0.062 0.396 0.409 0.322 0.336 0.384 0.370 0.467 0.432 0.083 0.062 11.1 0.050 0.362 0.350 0.385 0.446 0.061 27.4 0.048 0.358 0.315 0.427 0.506 0.079 365 0.098 0.284 0.307 0.511 0.572 0.060 T binh 134.5 0.065 0.334 0.324 0.441 0.508 0.069 E 1000 900 0001 800 £ 700 Z 600 500 JS 00 300 •3 200 100 • • 0.4 • 1 _ 0.9 17 _ 2.6 3j The tich duadich HTBM/Thetichrangcua Tia, % Hinh Luong dau thu hoi them theo tinh toan tren md hinh thiry ddng hoc • IS _ 0.4 • _ i m • • _ • 0.9 17 2.6 3.5 IK lick dung HTBMT / he tich rong cua via, % Hinh Gia tdng he sd thu hdi dau theo tinh toan tren md hinh thiry dong hoc 103 Nghien cuu, Phdt men vd Ung duns Cons nshe Vdt lieu (KC 02/06-10)- Hd Ndi 27/11/2009 Tren ca sd cac tfnh toan tren mo hinh co the dira cac k i t luan sau: - Tinh toan cho thay khdi lugng dung djch H D B M bom vao via rat nhd so vdi t h i tich rong ciia than dlu - Ghi nhan dugc sir gia tang he sd thu hdi dau ty le thuan vdi viec tang lugng dung djch HDBM dugc bam, nhien ty le dung dich so vdi t h i tich rong ciia via cang tang thi nhip dd gia tang he sd thu hdi dau cang cham lai - Tinh toan sa bd cho thay t h i tich dung djch chat HDBM chilm 15% t h i tich rdng ciia via he sd gia tang thu hdi dau cd the dat tdi 3,4% Tinh toan k i i m tra tren md hinh thiiy ddng luc cho ket qua la hieu qua, ap dung cong nghe bom bom nut dung dich chat H D B M dat dugc sir gia tang thu hdi dau, nhien thap hon nhilu so gia tri nhan dugc nghien cuu tren md hinh via tir m l u loi (7,1 % ) Cd t h i bien luan nguyen nhan ciia sir gia tang he sd thu hdi dau kha thap tren md hinh thiiy ddng luc hoc so vdi nghien ciru tren md hinh bang mau loi Thir nhat, tren md hinh thiiy ddng luc hgc the tich ciia dung djch bom cho phep rat nhd so vdi thi tich rdng ciia via va chi chiem 0,3-1,5% Lugng dung dich vi vay khong the bao triim hit toan bd cac khu vuc ciia than dau, cd nhirng vung dau dong va day d l u tdi day gieng khai thac Vi vay, hieu qua day d l u bang dung dich chat HDBM trd nen han che va diu tilp tuc dong lai cac vi nut ne Thu hai, Md hinh thuy ddng luc hoc md ta toan bd dieu kien dja chat via, dd cd sir bat ddng nhat ciia da chua nhu sir khong ddng deu phan bd nut ne, dd tham va cac tinh chat khac Nhirng yeu td phan anh qua he sd bao triim qua trinh khai thac blng bom ep Ket qua tinh toan tren md hinh thiiy ddng luc the hien ca he sd bao triim va lam cho he sd gia tang tru lugng thap han day dung dich tren md hinh m l u loi Thu ba, Bom ep dung djch HDBM mot phin tiln hanh vao phin day than dlu la noi bao hda nude, tai day chat HDBM khong the phat huy tac dung tang he sd quet cac vi nut ne Hieu qua kinh te-ky thuat ciia cdc phuang an bam ep dung dich Ket qua cac tinh toan kinh te dugc dua vao bang 3, nd cho thly t i t ca cac phuong an bom dp dung dich HDBM nham nang cao he sd thu hdi d l u ting mdng Ddng nam md Rdng dugc xem xet deu cho hieu qua kinh te Cac tinh toan cho thay giai phap ap dung tat ca cac phuong an d i u cd hieu qua cao Ngoai k i t qua ung dung dem lai ngudn lgi ldn cho Nha nude dudi dang cac loai thul Tdng cac loai thul Nha nude thu dugc theo cac phuong an 1, va tuong ung la 230,6, 685,7 va 1382,4 ngan USD la s i r i t dang k l (muc 7+8+10 bang 5.5) Can ndi them cac tinh toan kinh te ky thuat tiln hanh cho mot don v j nhd ciia he thing khai thac ciia via Neu triin khai rpng rai cho toan bd than diu thi lugng diu khai thac bd sung cung nhu hieu qua kinh te se rat ldn Tren ca sd cac phan tich kinh te-ky thuat cd t h i nit cac k i t luan sau: - Ung dung cong nghe bom dung dich HDBM la huu ich nham nang cao he sd thu hdi diu than dau mdng Ddng nam md Rdng - Tinh toan hieu qua kinh t l tien hanh cho phuang an khac v l thdi gian bom ep dung dich K i t qua tinh cho thly t i t ca cac phuong an bom dung dich HDBM dlu cd hieu qua nhung phuong an cho luong lai rdng ldn nhat va la phuong an cd thai gian bom lau nhlt so vdi nhirng phuang an khac Dieu cho phep ket luan: de cd t h i cd kha nang dat hieu qua cln phai len k l hoach img dung giai phap vdi thdi gian bom dung dich HDBM vao via