NGHIEN cufu-TRAO 061 THie'T Ke', T I C H HOP HE THONG XU" LY DUNG DICH T R E N G I A N K H O A N T a NANG CUA VlfiT NAM* 'ThS Nguyin Cdng Phuc, ^PGS TS Cao Ngpc Ldm, ^ThS Vu Van Khoa 'Cdng ty Cd phdn Cbl t^o Gidn khoan Dau khi, ^Viln Cdng nghe Khoan ^Viln Nghiln cflu Cd (NARIME) TOM TAT Trong qud trinh khoan gieng khoan ddu tgi viing bien Viet Nam, dung dich khoan cung cdc hgt rdn khoan xdm nhdp vdo via ldm nhiim bdn via sdn phdm, mdt tudn hodn dung dich Vi vdy, degidm thieu hdm lUdng cdc hgt rdn khoan dung dich, tdng khd ndng thu hdi lUdng dung dich cdn thiet thi cdn ndng cao hiiu sudt sit dung cdc thiit bi tdch, lgc he thdng xit ly thong qua nghien cUu thiet ke dung tiiu chudn, tich hdp cdc cum thiit bi hi thdng mgt cdch hdp ly Viec thiet kechi tiet he thdng chinh xdc se dem lgi hiiu qud, ldi ich cho viic van hdnh, bdo dUdng thiet bi vd chu ddu tU ABSTRACT In drilling operation from Viet Nam offshore, reservoirs are continously affected by the drilling fluid and cutting invasion, which causes substantial formation damage, lost circulation Thus, to reduce drilled solids in drilling mud and lost circulation, recover drillingfluid,we need to increase solid control equipment efficiency in mud treatment system by deeply studying in designing and reasonable integration A correctly designed Mud Treatmen System returns benefits to both the Equipment Maintenance and Operation and the Contractor M D A U Tai vdn bdn sd 522/TTg-DK ngdy 7/4/2008 Thu tfldng Chinh phu da dfla Dfl an dau tfl cbl tao (ddng mdi) gidn khoan tfl ndng vao danh sdch cac dfl dn thudc Chfldng trinh Cd trpng dilm Qudc gia Thflc hiln chi dao cua Thu tfldng, 29/8/2008 Bd Khoa hpc vd Cdng nghe cd quylt dinh sd 1903/QD-BKHCN phi duylt danh muc cac nhilm vu KH&CN thudc Dfl an "Nghiln cflu thiet kl chi tilt vd cdng nghe clii tao, lap rap, thuy gidn khoan tfl ndng d dp sdu 90m nfldc phu hpp vdi dilu kiln Viet Nam" vdi muc tilu la tflng bfldc lam chu thilt ke, cdng nghe cbl tao, lap rdp, thuy gidn khoan trln ca sd tfl van, chuyen giao cdng nghe cua nfldc ngodi; phdn dau din nam 2015, ty trpng thilt kl vd cbl tao nfldc dat 50%-60% vd se tang dan vdo cdc nam tilp theo; sdn pham gidn khoan dat tilu chuan Qudc t l va gdp phan ddo tao, ndng cao trinh dp cua dpi ngu cdn bd Viet Nam chuyin sdu ve thilt kl, che tao, lap rap, thuy gian khoan dau Dl tai cap Nhd nfldc "Nghiln cflu thilt k l chi tilt, cdng nghe cbl tao va lap dat he thdng tuan hoan dung dich khoan trln gian khoan tfl ndng 90m nfldc", ThS Nguyen Cdng Phuc lam chu nhilm, day la mdt 11 Dl tai thudc Dfl dn ndi trln; Qua hdn nam tien hanh thflc hien De tai kit hpp vdi TA P THf CO KHf VlfiT NAM ••• Sd 03 (Thang nam 2012) NGHIEN cufu - TRAO D6\ kit qua thflc hi|n hpp ddng 526/HD-DKVN, PV- Vi|t Nam, hau hit cdc gilng khoan SHIPYARD va NARIME da dat dflpc m^t sd kit ddu kbi tim thdy dflpc phdn bd d trln thlm luc qua dang kl ddi vdi h | thdng tudn hodn dung djch dja phia nam vdi mflc nfldc biln tfl 150m nfldc khoan trln gidn khoan tfl ndng 90m nfldc Bdi bdo trd xudng, dd, cdc loai gidn khoan tfl ndng tif ndy khdi qudt kit qud thilt kl, tich hpp h | thdng 150m nfldc trd xudng Id loai gidn khoan se dflpc xfl ly (lam sach) bun khoan hdi vl tren gidn khoan sfl dving chu ylu tai Vi|t Nam tfl ndng 90m nfldc ldn dau tiln d\iac chi tao, thuy thdnh cdng d Viet Nam Ddy cung Id loai gidn khoan chilm ty trpng ldn (gdn 60%) tdng sd gidn khoan dang boat K H A I Q U A T vfi G I A N KHOAN TV" N A N G dOng vd dang d\i(yc thi cdng cbl tao trln todn the VA Hfi THONG XU" LY DUNG DICH KHOAN gidi 2.1 Gian khoan tfl nang 2.2 H^ thdng xfl ly dung dich khoan trln gian khoan tfl ndng Gidn khoan tfl ndng LTl Supper 116E la mau gidn khoan chdn, dang chdn hinh vudng Tai mdi chdn gidn khoan dflpc trang bi dl chdng lun Id mdt dau bit hinh chdp (spud can), cdc chdn ndng dfldc bdi cdc ddng cd diln thdng qua he thdng rang vd bdnh rang Ddy Id he thdng ndng chdn xudng ddy biln dl dinh vi gidn tai vi tri khoan trfldng da dinh Gian khoan dfldc Hau hit cdc gidn khoan tfl ndng trln toan thi gidi diu cd cau true he thdng tudn hodn dung dich khoan bao gdm mdy bdm dung dich khoan dp suat cao; he thdng, xfl ly (ldm sach) dung dich khoan; he thdng bdn be chfla, pha trdn, dilu che dung dich khoan thilt kl de boat ddng tai nhflng vung biln cd dp sdu mflc nfldc tdi 90m, chiu dxiOc sflc gid d tdc dp H | thdng thdng lam sach dung dich hoi tdi da 180km/h, tdc dp ddng chdy 2m/s, dp sdu vl tfl gilng khoan ddu khi, nham kiem sodt hat khoan lln din 6.000m khoan rdn vd Iflpng lan dung dich, he thdng ndy anh hfldng trflc tilp din gid thdnh gilng khoan vd hi|u suat lam viec, tuoi thp cua cac thilt bi he thdng tien hanh khoan gilng khoan dau He thdng ddm bao loai bd tdi da bpt va lfldng mun khoan ran lan dung dich bi nhiem ban nham thu hoi ldn nhdt khdi Iflging dung dich mat di qua trinh tuan hoan, nang cao hilu suat lam vile cua cdc thilt bi khoan ky thuat khoan cdc gilng khoan dau tai vung biln Viet Nam Hinh 1: Mau gian khoan tfl ndng LTI Supper 116E TAP CHf CO KHf VlfiT NAM • Sd 03 (Thang ^ ')ft1')^ NGHIEN cufu-TRAO D | May \t9tn Uk Duoiif lav r\ Cwtcan khsui Du»ite !»»• -V' dd hoi vr tu gif ng Gifng, khoan law sarh dui\£ dich khoan Hinh 2: So dd nguyen ly hoat dpng he thdng tuan hoan dung dich khoan Trln Hinh 2, md td nguyin ly tuan hodn dung dich khoan tfl may bdm dung dich khoan dp suat cao, dung dich dfldc day qua cac thilt bi xudng ddy gilng khoan thodt tfl cdc vdi phun thuy lflc cua chdong khoan, tai ddy gilng dung dich day mim khoan di ngfldc lln bl mat theo khodng khdng vdnh xuyen gifla thdnh gieng vd bd dung cu khoan, dung dich hdi vl vdo be chfla dung dich sau dan qua cdc thilt bi xfl ly dung dich khoan Dung dich sau lam sach chuyen vl cdc be chfla vd dfldc dilu che, bd sung rdi bdm tiep tuc vdo gilng khoan Dung dich khoan dflpc tuan hoan nhilu lan qud trinh khoan gilng, nen theo dinh ky, ngfldi ta thlm nfldc vd set vd cac hda chat de bu vao sfl mat mdt dung dich vdo he, tang the tich gieng khoan hoac phai dilu chinh cdc tinh chat cua dung dich cho thich flng vdi cdc he dang khoan thuy lflc, mflc dp pha lodng, mdmen vd lflc can, dp suat trao, dp dn dinh gilng, sfl tuan hoan tdn that, dp dn dinh gieng Dieu nay, anh hfldng tdi tudi thp chodng khoan quay, bdm va cdc thiet bi ca hpc khdc todn he thdng THIET KE CHI TIET, TfCH HOP HE THONG LAM SACH DUNG DICH KHOAN Vile nghiln cflu thilt kl hpp ly he thdng trln gian khoan tfl ndng dam bao ylu cau ky thudt, ddp flng cdc tilu chuan Idem dinh Qudc te se: Dem lai lpi ich kinh t l cho chu dau tfl, ndng cao bilu suat van hdnh va keo dai tudi thp cho cic thilt bi he thdng - Gidm gid vd giam dp thai nfldc cua dung dich khoan, ddng thdi giam bdt sfl mdi mdn dung dich di chuyin din cdc thiet bi todn he thdng Vile kilm soat hat ran he thdng ldm sach dung dich khoan co y nghia rat ldn tdi qua trinh tuan hodn dung dich gilng khoan Nlu hat ran khdng dxiOc loai bd hoac loai bd Tat ca cdc thiet bi he thdng lam sach khdng hit, dd, loai chat ran va mflc dp tap trung cua nd anh hfldng tdi dung dich va chi phi dung dicb dflpc thilt kl, bd tri phu hpp de boat gieng bao gdm nhflng he sd nhfl tdc dp khoan ddng vung zone theo tieu chuan API RP500 TAP CHf CO KHf VlfiT NAM • Sd 03 (Thang nam 2012) m NGHIEN cufu - TRAO DOI (vung cd chfla cdc chdt de chdy, nd nhfl: khi, ddu, parafin ), dam bdo an todn h | thdng ldm vi|c Trong bdn ve chi tilt bd tri h | thdng xfl ly dung dicb, cdc thilt bi h | thdng diu dflpc bd tri xa cdc dOng cd, cdc ho^t d^ng vl di|n, di|n dilu khiln di trdnh hi|n tflpng bdt lfla xdy ra, cym thiet bi dflpc ddt xa h | thdng skidding cantilever, vi tri cd lap dat cdc dOng cd M()t khodng khdng gian phy thupc vdo kich thflde thilt b\, vi tri chay dng, cac ddu ndi se dfldc di ddnh cho sfl bd tri thilt bi tfldng lai: Mdy ldm khd dung dich (cutting dryer), bang tdi bdt vit ngang (horizontal screw conveyor), mud logging unit, centrifugal feed pump, thilt bj ly tdm (centrifugal), cdc thilt bi chd sfl bd tri cua nhd thau Trong thilt kl chi tilt, bd tri thilt bi he thdng lam sach dung dich khoan trln gidn khoan tfl ndng 90m nfldc d Viet Nam, vdi lflu Iflpng ylu cau cua dung dich khoan Id lOOOgpm, viec tinh todn thilt kl, lfla chpn bd tri cum thilt bi vdi tdng lflu lfldng cua ndy dat IdOOgpm gdm ba sang rung cung vdi mpt mdy tdch tdng hpp dung dich khoan cho xfl ly dung dich ldm ndng vd khdng lam ndng, gdm san rung tich hpp vdi cum tdch cdt vd tdch bun, sdn rung dflpc gdn Ifldi API 200 (74^) dl thu hdi lai Iflpng Barite phdn mim khoan vd hat ran thai tfl cum mdy tdch cdt vd tdch bun, cdc hat Barite vd hat ran nhd hdn 74|i se trd lai he thdng tudn hodn cdn cdc hat ldn hdn se bi loai bd Lfldi API 200 dfldc dung cho sang rung Id vi theo tilu chuan API thi chi cd 3% Barite cd kich thflde ldn hdn 74^ Bl chfla dung dich, dflpc thilt kl dung dl chfla dung dicb dflpc ldm bdng thip tam hdn lai vdi nhau, mat bl d l hd, thdnh bl dflpc gia cdng thlm cdc thip dinh hinh d l ddm bdo vflng chdc, gifla cdc b l chfla cd cdc Id thdng nhau, dfldng cua bl chfla dflpc ndi vdi dfldng hut cua mdy bdm dung djch Trln cdc dfldng dng hut, xa dflpc ldp ddt cdc van ddng md dl dilu tilt ddng chay can thilt, van cd tay van dfldc bd tri theo chilu ngang hodc thing dflng cho van hdnh dl dang nhdt, thilt bi mflc dp chdn khdng co ddng chdy (compound gause), bd chdng rung dng (expansion joint), di thay ddi lflu lfldng ddng chdy bd tri thilt bi gidm dp (concentric reducer) Cymrkixiint Dwtrag rii lUiAnh cikaMckAa B w i ^ rii nlUiih \ B^ttchthS A l * ] ^ Cniyclitit) > \ - MiyMeJitfi^kn/ M4TMckbte MAjrMekeit BwtnifiAtIt 9iM^ ruaif P\3 SUaicUMk •v >> V V v.v s s s Hinh 3: Sd bd tri thilt bi he thdng lam sach dung dich khoan TAP CHf CO KHf VlfiT NAM • S6 03 (Thang onn\ NGHIEN cufu-TRAOOCl Tren Hinh 3, md ta bd tri vi tri cdc cum thilt bi he thdng tudn hoan dung dich khoan mdt each ch\ tipt Viec flng dung phdn mim 3D vdo thiet ke nhdm ndng cao ky nang cung nhfl hilu qua cii cua:i tUiSt \r& ^A^heUA tux—cau ^n U:Aphflc u.'., 4gidn thiet kl cdc thdng, kiln tap trln khoan tfl ndng 90m nfldc tai Viet Nam, dat dflpc kit qua ddng kl , J i c h s a u t •n h i n h tru ^Inh C l i n < Oiiu x a Hinh 4: Mo phong 3D May tach tong hop Mdt nhflng flu dilm cua phan mim md phdng 3D Id ngfldi ky sfl dflpc thilt kl vd thi cdng ong mdi trfldng vd khdng gian gidng nhfl thflc, nhd vdy, chung ta cd thi kilm tra sfl va cham cua dng vdi dng, cua dng vdi thilt bi, kilm tra sfl hdp li va logic qud trinh bd tri thilt hi vd van cho ngfldi van hdnh cd thi thao tac mdt each de ddng nhat; nhd 3D ma chung ta cd thi tdi flu hda cdch di dng vd bd tri support chinh xac nhat Vile tinh todn, thilt kl thdng minh dam bao la xfl ly dung dich lam nang, phan thai bdi mdy tdch bim vd cdt dflpc sang lai bdi sang rung cdn xfl ly dung dich khdng lam ndng thi phan thai cua may tdch cdt va bun se dflpc thdi tdi mdng gom hat ran Dac diem thiet kl ndi bat Id mdy tdch tdng hpp dung dich khoan trln gidn khoan tfl ndng 90m nfldc tai Viet Nam Id cd khd ndng van banh nhfl cdc mdy tdch bun tdch cdt riing le hoac kit hpp lai thdnh may tdch tdng hpp cdn thilt thu hdi Iflpng barite dung dich lam nang, vdi ty = 4.2 SG Hinh 5: Mo phong 3D cum xfl ly dung dich khoan (a) va cum tach (b) ^ TAP CHf CO KHf VIET NAM •*• Sd 03 (Thang nam 2012) NGHIEN cufu - TRAO D I Vile tinh toan thilt kl ndy van ddm bdo ylu cdu ky thudt h | thdng, ddp flng tilu chuan kilm dinh va dat dflpc nhflng flu dilm sau: Tilt kilm m^t cym mdy tdch bun; m^t bdm ly tdm cho cum tdch bun vd cdc phu kiln di kim; Ldm cho h | thdng xfl ly bdt phflc tap; gidm khdng gian ylu cdu di bd tri hi thdng; Tang dflpc cdng sudt cua cac sdng rung vi ta cd thi dung tat cd cdc sdng rung he thdng xfl ly dung dich khdng ldm ndng Qua dd, da ldm rd vl mpt sd dilm ndi bat vl mat cd sd ly thuylt vd thflc tiln cua vi|c lfla chpn, bd tri cdc thilt bi h | thdng ldm sach mun khoan trln gidn khoan tfl ndng dau tien tai Viet Nam, md trfldc gid cdc tdi li|u cua Vi|t Nam hdu nhfl chfla di cap vd dd giai quylt dflpc bdi todn ddt ban ddu Id tinh todn thilt kl, tich hpp thilt bi h | thdng ldm sach dung dich khoan trln gidn khoan tfl ndng 90m nfldc mpt cdch khoa hpc, kinh t l phu hpp vdi dilu kiln Viet Nam KET L U A N Viet Nam cd thi thilt kl, tich hpp dflpc he thdng ldm sach dung dich khoan trln gidn khoan tfl ndng.