Hiệu quả ứng dụng công nghệ mới trong xử lý vùng cận đáy giếng tại các mỏ dầu khí thuộc thềm lục địa phía nam việt nam

272 Hdi nghi Klma hoc vd Cung nyltH Bien tocm glide Ic'tn tllii V HIEU QUA i l N G D U N G C O N G N G H E M O I T R O N G XU LY VUNG CAN DAY G I E N G T A I C A C M O DAU K H I T H U O C T H E M LUC DIA p i l l A N A M V I E T N A M Kutovoy A.C., Nguyin Qudc Dung, Hd Nam Chung, Duong Tien Dat NlPlmorneftcga? - Vietsovpetro Tom tit: Lien quan tdi viec suy gidm sdn hrgng khai Ihdc ciia XNLDDK Vietsovpetro viec dua di xudt vd ung dung cdc cdng nghe mdi Irong xir li viing cdn ddy giing nhdm muc dich tdng cudng sdn lucmg khai thdc Id mgt Irong nhung uu lien hdng ddu nhdm tri sdn lugng chung cita lodn xi nghiep Trong hdi bdo ndy cdc Idc gid Irinh bdy cdng nghe xir ly vimg can day gieng bdng cong nghe Idc dgng hga nhiet Phirang phdp xir li Iren Idn ddu lien dugc ung dung vcig Ihuc tiin md cua xi nghiep khudn khd thir nghiem cdng nghiep nhdm tgo tiin di ca bdn cho viec sir dung rgng rdi cdng nghe Iren cho lodn bg cdc gieng cita xi nghiep Irong thai gian sap Idi EFFECTIVENESS OF APPLYING NEW TREATMF.Nl Ti:CI INOI.OGY IN OIL WELLS IN J V VIEtSOVI'i: I RO Abstract: Affecting by the reducing of oil exploitation production of Ihe J V Vietsovpetro, Proposals and applications of new treatment technology al near bottom oil-well for increasing of exploitation production is Ihe first priority In this paper, Ihe authors present new Irealment technology based on the temperature - chemical actions The technology first has been tested in the J V VieLiovpelro oil-wells and Is promising lo apply widely in the in all wells of the Company IVIODAU Rat nhieu eac cdng nghe xii li axlt khae da duge tien himh tai cac ddi tugng khai thac thugc XNLD nham lam tang luu lugng khai thac eua cac gieng khai thac cung nhu kha nang tiep nhan eua cae gieng bom ep phuc vu cho qua trinh tri ap suat via cac khu vuc dugc khai thac Cac gieng khoan thang dimg va khoan nghieng cd khoang md via than tran hoac due Id da dugc de nghj can nhac lira chgn va nghien cim de tien hanh thir nghiem cdng nghe xii ly mdi bang tac dgng hoa nhiet eung nhu danh gia hieu qua eua eua edng nghe tren Ban chat cua cdng nghe tren la viec sir dung nhiet lutjng toa tir phan img hoa nhiet giiia bdt magie va axil HCl nham much dich tac ddng len eac nhan td giup phuc hdi va lam tang dd tham thau cua viing can day gieng cung nhu lam giam thieu tdi da sire can thuy dgng lire hgc len chuyen ddng ciia chat luu via vao gieng Trong nam 2008, loan xi nghiep da tiin hanh thuc hien 52 xir li viing can day gieng, trgng dd ed 47 xtr li duge thyc hien cho eac giing khai thae va xir li dugc thuc hien cho miu tian Nang hrgng, Ky thudl cong Irinh Van Idi vd Cong nghe Bien cac giing bgm ep He sd cong trang binh ciia eae xu li la 77% dd 74% ddi vdi cac giing khai thac va 100% ddi vdi cac gieng bgm ep Tdng san lugng dau khai thac them dal 62587 tdn, lugng nude bgm ep them dat 14403 m3 Thcg hgp ddng ki kit vdi cdng ty DMC, nam 2008 se tien hanh thir nghiem edng nghe lac dgng hoa nhiet xir li viing can day gieng dua tren edng nghe de xuat eiia cdng ly DMC tai giing A813 (Oligoxcn Ha, md Bach Hd), A708( Migxen Ha, md Bach Hd), A 315 (tdng Mdng md Rdng) GIENG A813 Giing dugc khoan vao tang mdng, khoang md via la than tran cd dd sau 4308-4864m C5u true gieng dugc bieu thi hinh Tir 04-23.03.2006, tien hanh sira chira ldn gieng nham much dich lap dat thiet bi Idng giing eho gieng Thay the vdng kbit cay thdng va thir kin d ap suat 250at Phat hien dng khai thae bi mop meo qua trinh lien hanh sua chira ldn tai sau 3402m Tien hanh tha dung cu ren dng de sira chira sau dd tha bd thiet bj Idng gieng xudng dp sau 3697m Day giing bj bit bdi thiet bj thdng Idng gieng d sau 3712m I17» 13.04.2006 lien hanh xir li viing can day gieng bdng nhu tugng axil dau (tren nen lang dung dich axil glinor) Luu lugng dau trude va sau xir li ciia giing tugng iing va 13 tan/ngay dem 18.07.2007 tiip tue tien hanh xu li viing can day bdng nhu tuong axit ddu ( tren nen tang dung djch axil glinor) Trude xii li gieng lam viec vdi eae thong sd: Pm = 13at, Pvx=45at, Qd=22tdn/ngay dem, Wnude= 1,4%, Vgas=12000m3/ngay dem (17.07.2007) Sau xir li giing lam viee d ehi dd Pm 13at, Pvx=77at, Qd=36 tdn/ngay dem, Wnudc= 19,5%, Vgas=20000m'/ngay dem (20.07.2007) Theg ke hgach san xudt cua xi nghiep nam 2008, cong nghe xOr li vimg can day bang tae ddng hoa nhiet se dugc tiin hanh tai gieng A813 theo trinh tu sau: Utmamia1ii\i - Chudn bi hoa pham tai xudng cira XNLD bao gdm: GKR2-8m3 (HCl-10%; HF-2%; CH3COOH5%); chdt chdng an mdn AII-240 3,75%; CKRl8m3(HCl 15%); chd' chdng an mdn AII-240 3,75% -va AI-60Q 3%- Chdt chdng an mdn AI-600, nude pha chi dung dich se dugc trdn them vao dung djch tai gian — Hinh 1; Cau true gieng A813 llcii nglu KJicHi^hoc vd i 'dug nghe Bicn tocm qiicic ldn d'n V^ -I4h00 16.09.2008 tiin hanh thao lap Ihiil bi diing eho qua Innh xu li axil Ihco so \ii kit ndi Ciie duimg ong bam vii dudng licp nhan vdi may bam ( hinh 2) 17 09.2008 liin hanh thu kin dudng dng bam lai ap sual 250al biing cac may bom ircn giiin (may bom SSl'-250 SSP-500) Tiip dd liin hanh chudn bi hon hgp hga nhiCl ddng nhal Qua Irinh xu li dugc bdi ddu lite 8h20- 18/09/2008 va kil Ihiic luc 12hl5' ngiiy 18.09.2008 Qui trinh xii- li viing can day giing biing cong nghc hoa nhiet: Dirng bom gaslift \iio giing, thao xa ap suat lir dng nang vao binh lach khiddu sau dd nap ap sudt viio dng nang cho tdi ap sudl quyin thdng qua block ggi ddng Duy Iri giing Irong Irang thai dirng kT Ihual Irong vdng gid Trong luc khoang khdng vanh xuyin md, bom vao dng nang 2m3 diesel+l,5m3 hon hgp hda nhict+0.5m3 dung djch dem DMC bdng may bom SSP-250(TWS-N»l),4m3 CKRI bang may bam SSP-500 Bam ep ddy 0,5m' dung djch dem Sau dd lap lai giai doan bom hoa phdm ddu lien (bang 1) Dimg giing kT thuat vdng 40 phiil sau dd tiip lire bam qua dng nang 8m' CKR2 bdng may bam SSP-500(TWS ^"2) Irong diiu kien khoang khdng vanh xuyin md Bam ep CKR2 bdng 25m-' diesel Sau hoan qua trinh bam ep diiy liijn hanh goi ddng giing lap lire bdng he thing gaslift Dimg cac may bam SSP-250 SSP500 uin hanh riia duimg dng bom axit bdng 500 lit nude chuyen dung Irong qua trinh bom dung djch axit, qua trinh bgm hdn hgp hga nhicl va bam ep day dugc Ihco ddi dua vag su thay ddi ap suat dng nang va ngoai klioang khdng vanli xuyen Bung I Ngi dung cong vice T h o i gian 18.09 08 04°° DCrng bom k h i gaslift Nap ap suat cho gieng Pm Pvs aim aim 14-0 44-10 08=°-08-" B g m 02 M diesel 12 08"-08-'- B o m 1,5 M ' dung djch hoa nhiet 12 08' 08" B o m 0,5 M dung dich dem 14 08'-'-09°' B o m M ' d u n g djch C K R 14 09°'-09" B o m 0,5 M ' d u n g djch dem 14 09 " - " B a m 1,5 M dung dich hoa nhiel 14 09"-09'° B a m 0,5 M ' dung dich dem 14 09'°-09" B o m 04 M ' dung dich C K R 16 09"-10°' B g m 03 M ' dung djch dem 16 10°'-10" B o m 09 M ' diesel 17 io '-ii" Dirng kT Ihuat 17 n"-ii" B o m 08 M ' dung djch G K R 18 Il"-I2" B o m 25 M ' diesel 20 Bat dau gpi d d n g gieng Vg=25000 m3/ngay dem 25 12" fTieu banmng luong, Kv ilnidl cdng trinh Van lai vd Cdng nghe Bien Trong qua trinh thirc hicn xir h' can day ap sual bcrm va bam cp day dung dich vao \ia bang Dicu co nghTa rSng dp tiep nhan cua gieng tuang doi cao, ap suat via thap Trong dicu kicn tren thi \icc tien hanh xu li gieng da dem lai kel qua lich cue (luu lugng khai thac lang len 52ian/ngay dem) Dicu chung to hicu qua cua xir h' la iing dung cong nghc hoa nhiet neu tren Truac va sau xu li, gieng A813 lam vice a ehc dp khai Ihac gaslifl lien tuc vai cac chi s6 dirac neu bang Bang Pvx B, Tin n aim % "C Qcl/Qd, Qg/Vg m3/ngiiy ni3/ngii\ dcm/lan/ngay dem dem irdc xir li 09.09.2008 / 50/ 2.5 29 8590/ 10918 55 Og/Vg I'm Pvx B Tm, in-7 aim aim % "c dem Qcl/Oii M7ngay dem/ liin/ngiiy dem l.ULI lircmg liing liin/ngay dem Sau xu li, ncay 19.09.2008 8/6 14 66 7,8 3740 Ngay 01.10.2008 9.7 3247 IS34 IS 16140/ 18000 80/58 7016/ 14919 36/26 •1-52 H-20 Ngiiy 31.12,2008 gieng lam vice d che dd khai thac gaslifl liiin lue vdi eac chi sd: Pni=13-14 aim, Pvx=46 aim, Qcl=22 m'/ngay dem, Qd=17tan/ngay dem, B=0,9%, iipn Vg=l5897m' Theo trang thai gieng 01.01.2009, tdng lugng dau khai thac lhi;m img dung cdng nghe xir li hoa nhiel dat 2306 tan Dpng thai biin ddi luu lugng chat Idng dau va dg ngap nude san pham trudc va sau xir lilai giing A813 dugc biiu dien Irong hinh Tir hinh ve la di nhan thay rang luu lugng ddu tang len sau lien hanh xir li gieng bang cdng nghe hoa nhicl GIENG A708 Giing A708 duge dua vao khai thae 01.07.1991 Cdu true giing A708 dugc bieu thj hinh Tir 09.07.2008 tdi 10/07/2008 tiin hanh xir li vung can day gieng bang phuong phap ehenh ap Xir li da cho kit qua tich cue Luu lugng gieng trude va sau xir li tuong ung la tdn/ngay dem va 15 tdn/ngay dem.Cdng nghe tiin hanh xir li giing bdng phuang phap hda nhiet tuang tu nhu ddi vdi giing A813 Cae thdng sd trgng qua trinh bom cung nhu bam ep ddy dung djch axit vao via duge trinh bay bang 276 liin nghi Khoa hoc vd Cdng nghi Biin todn qiidc Idn iliJr V Bang Thdi gian 21.09,08-05"" ogKis'" IT^s-' l5'-'-l5-" Ts'^Ts"-"" IS"-15'" 15'«-I6"" 16""-16"" 16""-16'16"-16'" 16'"-16 ' 16^-'-l7'" 17'"-^" 17^"-19'" 19-'"-20'" 20'" NtTi dung ciing vice Dirng bgm gaslifl Nap ap sual cho gieng Khu paraflln gieng Bom 01 ,M' diesel Bom 0.8 \i' dung djch hoa nhicl Bgm 0.5 M' dung dich dem Bom M ' d u n g djch CKR Bgm 0.5 M' dung dich dem Bom 0.9 M' dung djch hoa nhicl Bgm 0.5 sV dung dich dem Bgm 2.5 \ i ' d u n g dich CKR Bgm i ,M ' dung djch dem Bam 08 M' diesel Dirng kT thual Bam 08 M" dung djch GKR Bom 13 M"' diesel Bat dau qua trinh ggi ddng giiing vdi Vrn=25000 M-'/ngay Pin atm 12-0 i >'X aim 55-0 """24~ 24 24 0 24 24 24 24 24 90 24 140-250 28 50 30 250-0 30 0-40 34 36 Tieu bcin^Ndn^,;r,]^ Kv ihndl cdng Irinh Van lai vd Cdng nghe Bici s r 'Xfc "-^/' —CKE-tEHHI:.;c+ES+CKF4|ES*HT;.n:i • 63 lt^-(^ 7t -4= / / j j / light Klma hue vd Cdng nghc' Ilien nictit qimc ldn line V I Tmh Ddng thai bien ddt luu lircmg chdl long, ddu vd ngap mrdc san phdm giing AH 13 _ Itl'l OK 749 - S!0 HKTS9B'6,45 PIIB*(HB) —1599 ? MaHflpejM 2I« 2569 HKT73l'5.51 2897 PIIO'(HB) 3130 3195 -33523221 -3363 qK _ TK -3378- Haxep _3687 4140 -3697- UK riaxep Himnem PasbeflHHirrejii o°o| i HcKvcc 3a6oH I Tmh 4: Cdu Ink giing A 70S Tien han Ndng luang Kv llnidl cdng irinh Van lai vd Cdng nghi Biin Truac va sau xii li, gi6ng lam viec a che khai thac gaslift lien tuc vai cac chi J duoc trinh bay bang Kcl qua cho ihdy xir If bang cong nghe hoa nhiet tai gieng da cho hieu iing tich cue Bdng m Pvx B, Tm, Im atm % »C Qcl/Qd, Qg/Vg in'/ngay m /nga> dem/tan/ngay dem dem Trudc xir li 20.09,2008r 8476/ 28 7/ 11 50/ 6940 14 72 Pm, atm Pvx, atm 10.3 52 13 55 Qcl/Qii, M'/ngay dem/ % liin/ngay dein Sau xir li, 29.09.2008r 7,5 2931 10890/ 16/11,5 6590 Ngay09.10.2008r 14 28 21/14 23680/ 14686 B, Tm, °C Qg/Vg, m'/ dem Luu lirgng lang tan/ngay dem +6.5 -1-9 Ngay 25.12.2008 gieng lam viec a che dp gaslift lien tuc vai cac chi so: Pm=12 atm, Pvx=55atm, QcH14 mVngay dem, Qd=9 t4n/ngay dem, B=21%, Vg=11889 m^ Theo tinh trang gieng 01.01.2009, tong luong dau khai thac them nha urng dung cong nghe xir li can day bang phucmg phap hoa nhiet dat 473 tan Dpng thai bien doi khai thac cua gieng duac bieu dien hinh I /le6Trr HttiJjiiT; T/cyr 06BO,nHeiiocTij, % ^ e H T JKMiiKOCTM, T / c y r - Linear (Xte6MT Hef|jrM, -r/eyr) FTinh Dong thdi bien doi luu liromg chdt long, ddu vd ngdp nu&c sdn phdm gieng A708 Hoi nghi Khoa hgc vo Cong nghe Biin todn qiccic ldn lliir V GIENG A315 Khoang md via cua giing: than trdn khoang tir 2874m-3170m Cdu true gieng duge trinh bay trgng hinh 13.05.2005 tiin hanh ggi ddng giing bdng he thing nitg, khdng nhan dugc ddng chdt luu vao gieng 25 05 2005 tiin hanh xir li axit giing bdng 24m' GKR Tir 25.05.2005 tdi 13.10.2005 tiin hanh goi ddng giing giai doan bdng hot, khdng nhan dugc ddng chat luu vao gicng 28.10.2008 tiin hanh xir li axil viing can day ldn Xir li khdng cho kit qua tieh cue 03.01.2006 lien hanh ggi ddng giing bSng Nito, kit qua khdng cd ddng chdt luu vag gieng 11.04.2006 sua chiJa ldn giing vdi mue dich uang bj td hgp bom dien li tam ngam cha gieng, Tir 03.11.2006 tdi 11.11.2006 tiin hanh sita chOa ldn giing vdi muc dich trang bj he thdng khai thac gaslift eho giing Dap giing bdrig nude biin Nang toan bd dng nang eiing Id hgp bgm dien li tam ngdm len khdi giing Tiin hanh rita gieng d dd sau 3348m Tha bd dng nang cimg vdi van gaslift xudng sau 2991m Tir 05.2007 tdi 06.2007 sira chiJa ldn giing vdi mue dich khoan than 21.07.2007 xu li axist viing can day giing bdng dung djch GKR Xii li cho ket qua lich cue Luu lugng giing trudc va sau xu li tuang irng ldn lugt la 10/18 tan/ngay dem nhung luu lugng suy giam nhanh chdng Giing lam viee d chi dd chu ki vdi luu lugng trung binh dat tan/ngay dem 27.09.2008 tiin hanh xir li viing can day giing bdng cong nghe hoa nhiet Qui trinh thuc hien cdng nghe tuong tu nhu qui trinh thuc hien tai gieng A813 va A708 Cac thdng sd bgm va bam ep ddy dung dich axit vao via dugc tdm tdt trgng bang r5 Thoi gian 27.09.08 05°° 08'"-08-"' 08"-09°' 09""-09"' 09"'-09''" 09'°-10"" 10""-ll"" ,,i«._,,ill ll'O-U" n"-ii» ll'"-12" 12'°-13'° 13'"-14" \C-\1" 17" Noi dung cong viec Dirng bam gaslift Nap ap suat cho gieng Bom 02 M' diesel Bom 1,5 M^ dung dich hoa nhiet Bom 0,5 M"* dung dich dem Bgm 04 M' dung dich CKR Bam 0,5 M"* dung dich d?m Bom 1,5 M dung dich hoa nhiet Bam 0,5 M"* dung dich dem Bam M^ dung dich CKR Bam M^ dung dich dem Bam M"* diesel Dirng kT thuat Bgm 12 M' dung dich GKR Bom 25 M"* diesel Bat dau ggi ddng gieng Vg^25000 m7ngay dem Pm atm 0 0-110 80-110 90 90-100 100 90-100 100-110 140-160 90 150-120 120-150 Pvx atm 0 0 0 0 0 0 0 Tieu^ban^Nang lujmg, Ky thudl cdng trinh Van idi vd Cdng nghe Bien rjTy6Hi;a,M AjibTHTyjia 14.66M i 98 124 754 KO HKT89 HKT73 784,5 1572 2095 ''* , 2406 ^ MaHApejiH 2630 :2643 :|-.| 2789 UK , 2817 • ! , 2829 • 2839 ; 2847 riaKep ;-:-j j : TK HHnnejit illi • jOncpblTblM CTBOJl Hinh 6: Cdu true gieng A315 Thong so lam viec ciia gieng A315 truoc va sau xu li vung can day dugc trinh bay bang 'm, Pvx, B, Tra, itm atm % °C Qcl/Qd, Qg/Vg mVngay m/ngay dera/tdn/ngay dem dem Trudc xir li, 08.2008r • - 2/ VQ- 50/ 1.6 72 - • QaWg, Pm, atm 5,2 6,5 QCI/QH, NiVngay dem/ % tan/ngay dem dem Sau xu li, 02.10.2008r 24 28 405/ 39 26/16 20000 Ngay09.10.2008r 321/ 40 24 28 24/14.8 20000 Pvx, atm B, Tm, »C Luu lugng tang tan/ngay dem -H4.4 -H3.2 llcii nghi Klma hoc vd Cdng nglie Bien tocm qudc hill diir V Ngay 31 1^ 2008 giing lam vice d ehc gaslifl lii:n lue vdi cac ehi sd: Pin-6 Pvx=45 aim Qcl'25 m^/ngay dem Qd=20 tdn/ngay dem, n=0% Vg=20000 m^ Theo trang thai giing 01.01,2009 long krgng dau khai thac Ihem dal 771 Ddng Ihai khai thac cita giing dugc bicu dicn Irong hinh 7, 20 30 18 16 14 11) s 'i g t Hinh 7: Ddng thai biin ddi luu luang diiu vd ngdp nude giengA315 Ket luan: Ircn CO so k6t qua xii li gieng mpt vai kel luan va kien nghi dugc dua nhu sau: • Nhom lam viec chung bao gom cac chuyen gia cua phia (VSP-DMC) chinh la nhan t6 chinh d^n loi sir ung dung ihir cong cong nghe xu li gieng bang phucmg phap hoa nhiet viec tang circmg kha nang cho dau cua viing can day gieng doi vol cac mo thuoc XI nghiep Vietsopetro • Ket qua xu li lien quan true tiep toi cac loai hoa pham, the tich bam, thai gian xu li cung nhu qui trinh bom tuang ung • Trong qua trinh gpi dong sau xii ii, nSng lugng cua dong chat luu via tang len duoi tac dung cua phuong phap hoa nhiet so vai cac phuang phap xir li axit thong ihuong khac Dieu lam tiet kiem thai gian ggi dong va dua gieng quay tra lia vao khai thac • Qui trinh lien hanh xu li gieng bat buoc can phai dugc toi uu hoa han niia nham lam tang toi da hieu qua cua nhiing lan xu If liep theo • Hieu qua tich cue ciia xir li phu thuoc chu yeu vao viec phan tich loai nhiem ban vung can day gieng va lira chpn phucmg phap xir li phii hgp nhat TieirhcinJ^mg l,rong Ky thudl cdngjrinhjgn leu vci Cong nghe Bien TAI LIEU THAM KHAO Mnpzaaxaainae M.- Ile;ipa.l985 A.X AMCTOB H M H Jip "TexiiuKa H TexHOjiomii aodtimi iieiJiTH" AiiajiHs TCKyiuero cocTOfliiHfl pa3pa6oTKH M/p BejibiH Tnrp H JXpaKon ua 01.01.2009 r OTMCT 0T.neJia pa3pa6oTKH HeijlTflHbix H rasoBUX MecTopo)KaenHH HMflMMOpHeifiTeraa Cn «BbeTeoBncTpo» ByntTay 2009r HliCTpyKltHH ng TcxiiojioiirnH TepMOXHMHHCCKOro B03aeirCTBHa ;iJia HHTeHUH4iHKaitHH HcijlTeaodbiHH B e n «BbeTCOBneTpg» Bynrray 2009r  ... Cdng nghe Bien Trong qua trinh thirc hicn xir h'' can day ap sual bcrm va bam cp day dung dich vao \ia bang Dicu co nghTa rSng dp tiep nhan cua gieng tuang doi cao, ap suat via thap Trong dicu kicn... tdn/ngay dem, Wnudc= 19,5%, Vgas=20000m''/ngay dem (20.07.2007) Theg ke hgach san xudt cua xi nghiep nam 2008, cong nghe xOr li vimg can day bang tae ddng hoa nhiet se dugc tiin hanh tai gieng A813... sudl quyin thdng qua block ggi ddng Duy Iri giing Irong Irang thai dirng kT Ihual Irong vdng gid Trong luc khoang khdng vanh xuyin md, bom vao dng nang 2m3 diesel+l,5m3 hon hgp hda nhict+0.5m3