THAM DO KHAI T H A C D A U KHl Nghien cuu phdt trien he dung djch khoan Crc che truang no set caa KLATROL KS Phf m Ding San, ThS Nguyin Mfnh HCing, TS Thii Hdng Chiim Cdng ty TNHH MTV Dung djch khoan[.]
THAM DO - KHAI T H A C D A U KHl Nghien cuu phdt trien he dung djch khoan Crc che truang no set caa KLATROL KS Phf m Ding San, ThS Nguyin Mfnh HCing, TS Thii Hdng Chiim Cdng ty TNHH MTV Dung djch khoan & Djch vy giing khoan TS Phf m XuIn Toln Ting cdng ty Dung djch khoan vd Hda phdm ddu Tdm t i t Nhdm tdc gid dd nghlin cdru vd phdt trlin hi dung dfch khoan gdc nUdc mdi cd nhliu tinh ndng UU vlit, cd kh ndng Uc chi truang nd sit cao, thdn thiin mdi trudng N^l dung bdi bdo bao gdm cdc kit qud nghiin eiJfU vi thAi\ phdn, khodng biin thiin ndng dd cung nhutfnh chdtfUu biin, khd ndng Uc chi sit cda hi dung dich KLAjnOi ctfi sdnh vdi cdc hi Uc chihl^n dang sit dung rdng rdi tai Vlit Nam; ddnh gfd tinh Uu vlit cda hi KLATROL qua phtm phdp thu hii mdn khoan, khd ndng tdi mun khoan LMdrdau Su phat trien cda cdng n g h i khoan, khai thic ludn keo theo sy p h i t t r i l n khdng ngdng cua cac h i dung dich khoan nhlm rdt n g l n thdi gian thi cdng, dn dinh t h i n h gieng khoan va d i m b i o an toan via sin p h l m Cie he dung djch khoan ed the dupc chia I i m Idai ehfnh: dung djeh khoan gdc nudc, dung djch gde dau/gdc tdng caonhuMiocenha v l Oligoeen thupng Bii b i o niy gk t h i l u mpt sd k i t q u i n g h i i n cdu he dung djch de chisi KLATROL, hi dung djch dc c h l set dupe p h i t triln b^ CPng ty TNHH MTV Dung dieh khoan v i Dich vu giln khoan (DMC-WS) CIc h i dung djch uTc chi hi£n tfang duac siirdungti V i l t Nam hpp va dung dieh khoan dang bpt/khf Dung djch khoan gdc dau/gdc tdng hop cd tinh dc e h l trUdng nd set tdt Tai Vilt Nam, h i l n da sd cle n h i thIu v nhat, nhung g i i t h i n h cao va thUPng gay i n h hUdng t i l u ngoii nude t i p trung v i o mdt so he dung dich gdc nitS eUe tdi mdi trudng nen dng dung bj han c h l , die biet ed tinh dc c h l s i t nhu sau: d nhdng nUde cd yeu c l u khit khe v l mdi trudng hoac + H | KCI/Polymer (DMOMI/Vietsovpetro): HI edtin khdng ed phuong tien thu hdi mun khoan H i dung djeh de e h l s i t trung binh, dung d l khoan chd y i u phln doa dang bpt/khi rat hiem dUde trien khai vl kho khin Miocen thupng va trung ncS cd cie Idp s i t mdng, h | viec xd ly; cdng nghe pha trpn vao dung djch tinh Dung djch KCI/Polymer cd g i l t h i n h thap, nSn khoan va t h i l t bi bom dung djeh phdc tap, g i l ehju nhi|t k i m , n i n ehi I p dung eho nhCfng vdng dja ehi eao Dung djeh khoan gdc nude iudn la uu tien h i n g d l u n d n g v i It phdc tap [1,21 tien hinh khoan t h i m dd, t h i m lUpng v i khai thie d l u Cac cong ty dung djeh khoan hiln dang t i p trung + H I FCL-AKK (Vietsovpetro): Dupc sd dyng rdng i nghien cdu p h i t trien h i dung djeh khoan gdc nude cd tai d c gilng khoan eua Vietsovpetro, ed k h i ning chj tinh dc e h l cao, b i n nhiet, de pha e h l va than t h i l n vdi n h i l t tdt, dd t i i mun khoan cao, de thi cdng Tuy nhi^ mdi trudng di tdng budc dua tinh dc che set cda he gde he ed pha r l n eao; khd khdng e h l ve tinh luu bien, c nude t i i m can vdi tinh nang dc c h l set cua cic h i gdc d l u t i n g ECD, tdn t h I t thuy lUc IPn ehua t h i n thien vdi n> [1,2,3,4,7,8,9] trudng vl ed ehda Chrom hpp ehat Ferro-Chrg Lignosulfonate (FCL) Ben canh dd, tinh dc c h l cua h i ffi Nhdm t i e g i l d i n g h i i n cdu x l y dyng dupe mdt eung khdng cao vi he khdng chda nhCftig c h i t dc chii sd h i dung djeh khoan cd tfnh dc che tdt sd dyng de ho^t tinh cao m l chi chda t i c n h i n de che l i cic catio^ khoan qua nhdng dja tang ed p h l n set hoat tinh AP* cd tiy p h l n nhdm kali v l KOH [1,2,13,14] 28 Dilu KKl-864/2012 i PETROVIETNAM + H i KCI-PHPA-Glycol (Ml Swaco) l i he dUdc sd dyng r l t phd b i l n khdng ehi d V l I t Nam m i cdn d nhieu nUdc t r i n t h i gidi H i ed tfnh de c h l tUdng ddi tdt nhP sy k i t hop nhan td dc che ehinh: KCl, PHPA (Partially Hydrolized Polyaerylamide) v l Polyalkylene Glycol Tuy nhiin, he KCI-PHPA-Glycol cd nhUpe d i l m l i d l gay bit sang rung dan d i n t r i o dung dieh PHPA b i m v i o mat sang Bin canh dP, mde dp chju n h i l t v i dp t h i i nude d n h i i t dp cao cda h i cung bj han ehl, ddi hdi bd sung t h i m mdt sd c h i t g i i m t h i i nude v i de c h l s i t d n h i l t dp eao [4], 3.1 Thdnh phdn cdu td vd chUc ndng cdc hda phdm hi KLATROL DV-HIVIS D: Chit tao dp nhdt, tao d u true - DV-CAP LV: Cfc c h l sit theo cO e h l mIng bao bpc - KCl: Cfc c h l sit theo eO e h l h i p phu trao ddi ion • DV-KLATROL: (Sc c h l sit theo eo c h l n i n chit phien sit DV-PAC LV: Gilm dd t h i i nudc - DV-FLO HT: Gilm dd t h i i nUdc d nhilt dp eao + H I Glydrii (Ml Swaco) la h i dung djch t i l n t i l n phat t r i l n t d h^ dung dich KCI-PHPA-Glycol, thay t h i PHPA bang hoa pham Ideap D co k h i nang de e h l tdt ma khdng I i m bft n h l t sang rung va khdng g l y buPc nhiy ddt b i l n v l tinh lUu bien Hon nda, hda pham Idcap D eung it bj I n h hudng bdi nhiem ban canxi nhu PHPA (PHPA cd xu huPng bj k i t tua ndng dp canxi cao q u i 800mg/l), n l n g cao hiiu q u i eda dung dich khoan qua nhijlig tang chda khoang canxi cao von r l t phd biln d Viet Nam Tuy nhiin, dung dich Glydrii cd g i i tuong doi cao va ngudn eung bi han e h l day l i h i dung djeh b i n quyen cda Ml Swaco [4], DV-CARB F (CaCOjF): Chdng m i t dung djeh, gia ed vd bun DV-KLASEAL: n djnh set d nhiet dp eao : DV-CIDE/Biosafe; Chat diet khuln Soda Ash: Khd dp cdng Barite: Chat tang ty trpng 3.2 Ca chi Uc chi cda cdc cdu tU dc chi KLATROL[4,10,11] he Ddi vPi h i dung djeh KLATROL, k h i ning dc che dUOc + He Ultradnl (Ml Swaco): H I dung djeh niy daac sd dung t h i n h cong tai Viit Nam cung nhu mot sd qude gia khactrin t h i g i d i NP la sutdng hcJp Uu the cua chat dc che set dang polyamine (Ultrahib), ehlt bao bpc (Ultraeap), chat dc c h l h i p phu trao ddi ion (KCl) va chit lam giam sU bam dfnh eda mdn khoan vao can khoan (Ultrafree) Do hoat tfnh dc che rat manh cda Ultrahib k i t hpp vdi KCl va Ultraeap, cie via set day, hoat tinh cao thUdng dupe khoan qua de dang vdi rat it sy cd xay q u i trinh khoan hoac k l o t h i , die biet khoan liln thdng qua elc ^ a tang cd I p suit via khac Tuy nhien, nhupc diem cua h i Ultradnl l i ed g i l cao v i chi daac eung d p dde quyen bdi Ml Swaco [4] Gi6i thilu h i dung djch khoan KLATROL t h i hien ehu yeu bdi hda pham: - MuoiKCI: Khi hPa tan v i o nude, mudi KCl cd the phin ly hoin t o i n vi day la mdt loai muoi d i i n ly manh Ion K* ed kfeh thudc nhd hdn (2,66Angxtrom), cP the xam nhap v i o rat khft d c Idp philn set Vi sy hap phu v i thay the ion Na+ eua K* la vTnh vien (ion K* khdng bj thay the bdi d c ion khac), dP khoing khdng gian not tai gida eie philn set bj thu hep lai, l l m eae phin td nUde rat khd ed t h i x i m nhap siu v i o khe gida eae phien set nay, dd han c h l sU trUdng nd cua philn set Bin canh dd, d c t i m hoat dpng tich d i l n i m tren be mat d e phien set dupc trung hPa bdi cae ion K*, ehung khong cPn k h i nang tUOng t i c vdi d c phan td nude dupc nda, do dd d i y vd bpc hydrat cda d c philn set giam di, dan d i n vile eie phien set khP truong hOn Ngoai ra, ion Cl- co Di tao he dung djch khoan gdc nUde cd cie chi t i i u Uu v i i t d i p dng y i u eau khoan lai khdng phu thude vao eie nha eung d p ddc quyln, nhom da tic gii nghien edu, p h i t trien he dung djch KLATROL Hinh Caciii hap phu thay the ion cua cation K' niUKHi-SO 4/2012 29 : THAM DO - KHAI THAC D A U KHI l i lye m?nh ddi vdi d e p h l n t d nudc cung l l m g i i m ty l | nUdc ty dung djeh, dp l l m g i i m mdc dp x l m n h i p v i o d c ke s i t cua eie phln td nude tu do, han c h l q u i trinh trUdng nd cua sit DV-KLATROL I I hdn hdp cda cic polyamine v l mudi amine hdu cd ble tan h o l n t o i n nudc, de c h l sit t r i n CO sd gia ed liln k i t philn sit Do i i lye cda gde amine (tim d i l n dddng) vdi eie t i m hoat ddng mang d i l n I m cua cie p h i l n s i t rlt i