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Tuyen tap bio cio Hpi nghj KHCN "30 nim Dau khi Vift Nam: Cff hpi mdi, thich thde mdi"

87^

MQT SO KET QUA NGHIEN CUtJ TONG HQfP SET HUtJ CO TlT SET
BINH THUAN DE StT DVNG CHO NGANH DAU KHI
Cao Anh Dung, Tran Xuan Phuong, Le Anh Dao
Hoang Linh, Than Hoang Cudng, Le Minh Son
Cdng ty Dung dich Khoan vd Hod pham Ddu khi

TOM T A T
Bdo cdo trinh bay cdc kit qud nghien cuu tdng hgp set hieu ca (set ua ddu) tie set
Binh Thuan vdi cdc hgp chdt amin bgc 4: Didecyldimethyl Ammonium cloride(ARQUAD)
- [2CHs.2C,oH2iN^]Cl, Benzyl cocoalkyl dimethyl Ammonium Cloride (R-N^(CH3)2-CH2C^HsJCi) (ARQUAD-MCB80). Di (Hydrogenated tallowalkyl) dimethyl ammonium
cloride [R2N"(CH})2lCr (ARQUAD-2HT75). Benzylmethyl Di(Hydrogenated tallowalkyl)
ammonium cloride fR2N^CH3(CH2C6Hs)JCr. Set Binh Thuan da duac ldm giau bdng
phuong phdp loc udt cd sic dung chdt phdn tdn (NaP03)6. Set Binh Thudn sau khi ldm
giau cd hdm lugng Montmorillonie 56% - 58% vd dung lugng trao ddi cation CEC 6668meq/100g set duac sic diing ldm nguyen lieu tdng hap set hiru ca.
Cdu triic cua cdc mdu set hiru ca duac xdc dinh bdng phuang phdp phdn tich nhieu
xg Ranghen (XRD), nhiet vi sai (DTA), nhiet trgng luang (DTG). Khd ndng tgo gel cua set
hieu ca 3% phdn tdn trong diezen vd trong hdn hgp diezen - nude (85/15% theo the tich)
ciing duac ddnh gid thdng qua cdc thdng sd luu biin PV, YP, cudng dp gel tren mdy
FANN model 35A Viscometer. Cdc kit qud thu ductc chi ra rdng khodng cdch ca bdn dooi
giira hai phien set ciing nhu khd ndng tgo gel cda set huTi ca phu thupe vdo kich thudc
cation amin bgc 4 trao ddi. Set hiru ca Binh Thudn chica cation hieu ca cd mgch
hydroeaebon ddi 18 nguyen tic caebon cd dooi ldn nhdt 40,33A^ vd khd ndng tgo gel ciia
chung trong diezen vd hdn hgp diezen - nude ciing ldn nhdt.
Nhdm ndng cao khd ndng tgo gel, chdt hogt dpng bi mat RiR2N(C2H40)iiH
Noramox da duac dua vdo thdnh phdn phdn ung. Cdc thdng sd liru biin ciia set him ca da
dugc cdi thien vd dgt gid tri cue dgi vdi luang Noramox bdng 10% trgng lugng set. Set
hiru ca Binh Thudn bien tinh cd hdm luang chdt hieu ca 40,25% vd dp truang nd trong

toluen 24cm^/g, tuang duang vdi set hieu ca VG-Plus (nhap tie Xingapor) de pha dung
dich khoan gdc ddu.
Set hiiu co cdn ggi la set ua dau la san phim phan iing trao ddi giira cac ion kim loai
nhu Na"^, Ca"^ nim d giiia cac phien set vdi cac vdi cac mudi amin bae 4. Set de san xuat
set hiru co thudc nhdm khoang set truong nd cd ham lugng Montmorillonit Na cao vdi
dung lugng trao ddi cafion it nhat 50 meq/IOO gam set khd va thudng ldn hon hoae bang
70 meq/100 gam set khd [1,2]. Phan iing trao ddi dugc thue hien theo Hinh 1:


88

Mpt so ket qua nghien cdu tong hpp sgt huu cff td sgt Binh Thu|njl:::.

CHr(3)-CH3
fc)

R2^

Chr,(3)-CH3

^Ri

Ri

R"

CB-^-CH3
©^

+ CH>®<

e

Ri

A

&

_a_

Rj

Ri

Ch^^-CH,

fe;

Rl

CB-^-CH

M(.wywwiniB,j)Mm!^*)

Na^
Rl, R2 cd sd nguyen tir caebon > 10
Hinh 1: Mo hinh phan irng trao doi hinh thanh set hiru cff
Cac cation amin bae 4 sau khi thay thi cac cation kim loai ed the sap xep thanh ldp
don hoae ldp kep trong khoang khdng gian giira hai philn set tuy thudc vao lugng mudi

amin trao ddi (Hinh 2).

(+)

(+)

GT

(+)

(a)
Cation amin bae 4

^

V

^-^1
(+)

^

(+)
1
1
C+)

^ -

GT^

(+)

W

(+

(b)

Hinh 2: Sir hap phu trao doi cation amin bae 4 tren be mat cac phien set
(a) Sir hap phu trao doi mpt lucmg muoi amin tuong ducmg vai dung luong trao doi cation ciia set
(b) Su hap phy vat ly lugng muoi amin du tren cac cation amin da bi hap phy tren be mat phien sit.

Su CO mat ciia cation bae 4 trong khdng gian giiia hai phien set khdng chi lam cho
khoang each dooi ciia khoang set thay ddi ma cdn lam cho set cd tinh ua dau. Nhd vay
trong cac dunp mdi set hiiu co phan tan, truong nd, tao gel thixotropic (xuc bien). Set hiru
CO dugc img dung trong nhilu ITnh vuc cdng nghiep nhu lam chat tao eau tnic pha dung
djch khoan gdc diu, vat lieu xir ly mdi trudng (tach hgp chat huTj co va dau trong nude)
phu gia san xuit diu md bdi tron, myc in, son, my pham, v.v. Gan day, set hiru co dugc
img dyng lam phy gia biin tinh vat lieu polime, nhya vdi myc dich tang do bin co ly.
Nhung vat lieu nay cd ten la nanoeompo';it [3].
Bao cao nay trinh bay kit qua nghien cim tdng hgp set hiin co tir set bentonit Binh


Tuyen tap bio c i o Hpi nghj KHCN "30 nam Dau khi Vift Nam: Cff hpi mdi, thich thde mdi"

89

Thuan va cac mudi amin bae 4 khae nhau vdi muc dich tao dugc chat tao cau tnic cho pha
che dung djch khoan goc dau:

•

Didecyldimethyl Ammonium eloride(ARQUAD) - [2CH3.2CioH2,N^]Cr ky hieu
la 2M2DBenzyl cocoalkyl dimethyl Ammonium Cloride (R-N^(CH3)2-CH2CeHjJCl") (ARQUAD-MCB80) R dai dien cho nhdm C12 va C,4 ky hieu MCB80

•

Di (Hydrogenated tallowalkyl) dimethyl ammonium cloride [R2N^(CH3)2]Cr
trong dd gdc R dai dien cho Ci8(58%), C,6(32%) ky hieu 2HT-75.

•

Benzylmethyl
Di(Hydrogenated
tallowalkyl)
ammonium
cloride
[R2N^CH3(CH2C6H5)]Cr trong dd gdc R dai dien cho C,8(58%), C,6(32%). ky
hieu M2HTB.

KET QUA NGHIEN ClTU
1. Nghien cihi lam giau khoang set Binh Thuan
Set Tuy Phong, tinh Binh Thuan thudc nhdm set truong nd (cdn ggi la bentonit Binh
Thuan) cd ham lugng montmorillonit Na rat thap 13% - 15%. Cac mau set thu dugc ngoai
thanh phan montmorillonit Na cdn chiia lugng ldn cac khoang khae nhu thach anh,
felspat, calxit, v.v... Vi vay, bentonit Binh Thuan trudc khi dua vao tdng hgp set hihi co
can phai dugc lam giau de nang cao ham lugng montmorillonit Na.
Chiing tdi da nghien ciiru lam giau khoang set Binh Thuan tren eo sd phuong phap
udt [4, 5] cd sir dung chat phan tan (theo so dd tren Hinh 3).
Set

Nude

''

''

Chat keo ty

''

Biin %k\.

thai

dd Sodium
hexa meta
photphat

Huyen phii
mjn

(1)

(2)

Ba thai

Ly tam
hoic I9C ep

70°C ^ SO'C

''
San xuat
sdt hiru co

Say kho,
nghien mjn

Nude loc

(1) Lang giai doQn I
(2) Lang giai do
Hinh 3 : Sff do lam giau bentonit theo phvong phap udt
Biin set dugc pha theo ty le set nguyen khai/nudc bing 1/2 din 1/2,5 theo trgng
lugng. Chat phan tan sir dyng la (NaP03)6 natri hexa meta photphat vdi lugng bing 0,05 0,1% trgng lugng khoang set. Su cd mat cua chit phan tan lam tang tdc do lang cac
khoang phi set nhu canxit, fenspat, thach arJi, v.v.. Thdi gian ling giai doan I khdng qua
20 phut. Trong giai doan nay phin ldn cae hat khoang phi set cd kich thudc ldn hon


90

Mpt so ket qua nghien cdu tdng hyp s^t hiru cff tir s^t Binh Thujnj£::i

0,04mm lang xudng, cdn d giai doan 2 chii yeu cac hat thach anh, mica cd kich thudc <
0,04mm tilp tyc sa lang. Thdi gian lang d giai doan 2 keo dai tir 20 - 24 gid. Thanh phan
khoang va thanh phin hda hgc set Binh Thuan trudc va sau khi loc dugc trinh bay trong
Bang 1 va 2.

Bang 1 : Thanh phan Ichoang Binh Thuan tru'dc va sau khi loc xac dinh bing XRD

Khodng
set
Binh
Thuan
nguyen
khai
Binh
Thuan

Thdnh phdn khodng (% trgng lugng)

Hieu
sudt
thu
hdi
(%)

Mont

Gatite

Kao
lanh

Hydro
mica

Clorit

Thach
anh

Fenspat

Calcit

-

13-15

it

6^8

7-8

7-8

20-25

10-12

13-15

20-22

50-52

it

6-8

5-6

5-6

8-10

5-6

5-6

19-20

56-58

it

5-7

it

it

5^6

it

it

5-7

it

it

5^6

it

it

(a) •

Binh
Thuan
(b) •

Set
Wyoming

68-70

Ghi chu: (a) sdn phdm thu duoc sau khi lang a giai dogn I; (b) sdn phdm thu duac sau khi
lang a giai dogn 2.
Bang 2: Thanh phan hoa hoc set Binh Thuan trudc va sau khi lam giau (% trong lirong)
Mau

Binh Thuan
(a)
Binh Thuan
(b)
Wyoming

Thanh phan hda hgc (% trgng lugng)
FeO CaO MgO
Fe203
K2O
1,85
1,56 6,25
1,60
1,50

Na20

MKN

1,80

13,25

0,8

2,25

11,30

1,50

0,6

2,45

10,85

1,85

0,5

2,85

10,5

Si02

AI2O3

53,5

11,5

54,3

14,20

1,9

1,6

3,0

1,4

55,20

15,60

2,0

1,7

2,10

58,20

16,70

3,00

it

1,25

Tir cac ket qua trong Bang I, 2 nhan thiy ham lugng montmorillonit Na trong set
sau khi Igc da tang tir 13 - 15% (set nguyen khai) din 52%) - 54% sau giai doan 1 va din
56% - 58% sau giai doan 2. Tuong tu, ham lugng Na20 tang tir 1,8 din 2,25 va 2,45. Kit
qua phan tich hoa hgc cung cho thay ty le Si02/Al203 da giam tir 4,52 xudng 3,8 va 3,7.
Dilu nay chiing td phin ldn thach anh, mica cd trong mau nguyen khai da bj loai bd.

Thanh phin mit khi nung (MKN) giam tir 13,25% xudng 11,3% va 10,85%) cung cho bilt
khoang canxit (CaC03) tach ra gin nhu hoan toan. Hieu qua thu hoi (lam giau) set dat
duge gia trj 20% - 22% (giai doan I) va \9% - 20% (giai doan 2). Set sau khi lam giau d


91

Tuyen tip bio cio Hpi nghj KHCN "30 nSm Dau khi Vift Nam: Cff hpi mdi, thich thde mdi"

giai doan 2 cd dung lugng trao ddi cation tir 66 - 68meq/I00g set va cd thi sir dung lam
nguyen lieu tong hgp set hiiru co. Tuy nhien, set Binh Thuan sau khi lam giau van chua dat
dugc phim chat nhu set Wyoming hien dang cd tren thi trudng Viet Nam.
Tinh chit vat ly ciia set Binh Thuan sau khi lge va set Wyoming dugc trinh bay
trong Bang 3.
Bang 3: Tinh chat vat ly ciia set Binh Thuan sau tuyen va set Wyoming
Hdm luang (%)
montmorillonit-Na

Set
Binh Thuan
(b)
Wyoming

CEC
Dp truang nd
(cm^/g)
(meq/IOOg set khd)

dooi(A'')

56-^58

66-f68

22

15,07

68-70

76^78

24

15,07

Phd nhieu xa Ranghen (XRD) cua set Binh Thuan trudc va sau khi tuyen ciing nhu
cua set Wyoming dugc trinh bay tren Hinh 4, 5, 6.

Hinh 4: Pho nhieu xa Rongen cua set Binh Thuan trudc khi tuyen
600 1

500

400

300
200

' • •'' '^tTn-rrrr,-rIY^r?Trifi!Tri^r

10

20

30

40

29
50

Hinh 5: Pho nhieu xai Rangen cua set Binh Thuan sau khi tuyen


92

Mpt so ket qui nghien cdu tdng hgp s6t hdu co td s6t Binh Thuan di..

Hinh 6: Pho nhieu xa Rongen ciia set Wyoming
Tir cac sd lieu neu d Bang 3 nhan thay set Binh Thuan sau khi tuyIn cd thi sir dung
lam nguyen lieu san xuat set hiru co. Tuy nhien chat lugng ehua bing set Wyoming.
2. Tong hop set hu-u cc tir bentonit Binh Thuan da lam giau
Cac mau set hiru co dugc tdng hgp theo so dd thi nghiem dugc trinh bay tren Hinh
5

Cac dieu kien phan ung:
-

Ndng do huyen phii set 30g/l.

-

Nhiet do phan img 60''C -H 65°C

-

pH ciia mdi trudng phan iing 9 -^ 9,5

-

Lugng mudi amin bae 4 tham gia phan iing bing
90% ^ 95% CEC cua set

-

Thdi gian phan ung 4 gid

San pham thu dugc sau phan img dugc rira 3 lin
bing nude ndng rdi dem siy khd d 60 - 70''C trong 12 gid,
sau dd duge nghien mjn qua sang 200 mesh.

c

Hinh 7: Sff do thi nghiem
tong hop set hQu cff
1. CSc phan img bang thuy tinh dung
tich it; 2. Bep di^n co dieu khiSn
nhi?t; 3. May khuiy nhiSu t6c dp; 4.
Nhi?t ki; 5. Phlu nho gipt.

Mau set hiiu co Wyoming va 2HT-75 ciing dugc
tdng hgp trong dieu kien nhu tren.
Phd nhilu xa Ranghen (XRD), va gian dd phan tich nhiet vi sai, nhiet trgng lugng
(DTG-DTA) cua cac mau set hiiu co dugc trinh bay tren Hinh 8, 9. D I danh gia kha nang
tao cau true cua cae mau va so sanh vdi mau set hiiu co ngoai VG-Plus, da do cac thdng
sd luu bien PV, YP, cudng do gel ciia dung djch set hiiru co trong diezen va trong hdn hgp
diezen-nudc (85/15% theo thi tich) vdi ndng do 30g/l tren may FANN Model 35A
Viscometer. Cac ket qua do dugc trinh bay trong Bang 4.


93

TuyIn tap bio cio Hpi nghj KHCN "30 nim Dau khi Vi^t Nam: Cff hpi mdi, thich thde mdi"

w«-,

•J

i»-

Binh Thuan-2M2D
Binh Thuan-CB80
Binh Thuan 2HT-75 Binh Thuan-M2HTB
(C,0)
(C,4)
(Ci8)
(C,8)
Hinh 8: Pho XRD cua cac mau set hfru c» Binh Thuan
Bang 4 : Tinh chat vat ly va tinh chat liru bien ciia cac mau set hiru cff trong diezen
va he diezen/nirdc (85/15) vdi nong do 30g/l

Set hieu ca

Hdm
lugng
amin*

dooi

(A

(%)

Binh Thuan 2M2D (C'lo)
Binh Thuan - CB80
(CM)

Dp
truang
nd
trong
toluen
(cm'/g)

Tinh chdt luu bien eiia huyen phii set hieu ea
30 g/l
YP
(Ib/lOOft^)

Gel 10"

(Ib/lOOft^)

Gel 10'
(Ib/lOOft^)

D DN

D

DN

D

DN

D

DN

0

1

1

2

PV
(cp)

19,52

9

2

4

2

5

21,40

9

2

4

2

6

2

1

6

Binh Thuan - 2HT 75(C,8)

33,2

40,33

14

4

10

4

30

28

1

30

Binh Thuan M2HBT(Ci8)

35,7

34,63

15

4

10

4

32

30

1

34

36,6

39,4

16

5

12

6

38

34

1

37

33,3

32,78

17

6

12

3

40

35

1

40

Wyoming - 2HT75
(C,8)

VG-Plus

Ghi chii: *: Xac dinh tren co sd DTG - DTA; D: Do trong diezen; DN: Do trong hon hgp 85%

diezen + 15% nude.


94

Mpt so ket qua nghien cdu tong hgp s^t hiru cff tCr s^t Binh Thu^n de...

Tir cac sd li?u d Bang 4 nhan thiy cac tinh chit vat ly dooi, do truong nd trong toluen
ciing nhu tinh chit luu biin cua set hiiu co phu thudc rit nhilu vao ban chat eiia mudi
amin bae 4 trao ddi. Khoang each dooi giO^a hai phien set ciing nhu cae gia tri PV, YP va
cudng do gel tang len theo chieu dai mach hydroeaebon (nC) cua cation bae 4, dooi =
I9,52A° vdi nC = 10, dooi = 2I,40A° vdi nC = 14 va dooi = 40,33A° vdi nC = 18. Sy cd
mat cua nhdm benzyl -CH2- C6H5- trong cation amin bae 4 hinh nhu khdng lam tSng gia

;/

^-..r^-^

*" •

I

i^^~

"

M

O

^

ini

-•"' '»"" "'"•""
40 B» ( L < r i > " . ' ^ ^ y ^

"'

M

OTA1:20 ' n
lyroi: 20
1

\

V

ll^^
100

200

300

400

500

600

700

800

900

1000

Hinh 9a: Gian do nhiel cua sA hOu co tdng hop lilr sa Binh ThuAn -i
Methyl benzyl dihydronated lallow amoniumclonia

100

200

300

400

500

600

700

800

900

;
•

300

f

-

\

1

M^dUH)

' ""

200

400

~

——

iji,o™ '

500

H Inh 9b. Ciin Sh nhif t cda iit hiru ca tbng hgp tiisit Blnh thu^n _+ Dimethyl dihydronated tallow
amoniumclorua

100
0

•

•

\

200

300

400

500

600

700

BOO

Hinh 9c : Gian do phin tfeh nhiit ciia sU Blnh Thuin sau khi (uyen

1000

Hinh 9d: Gian do nhiet cua sit hOru co tdng hop tii Wyoming +
Dimethyl dihydronated Tallow amoniumclorua

0 O 2 O 0 3 0 O 4 O O 5 « ) 6 O O 7 0 0 e 0 0 9 O O

Hinh 9e Gian do nhlel cua sit hOfu co I6ng hop ttr Wyoming i
Methyl Benzyl dihydronated Tallow amoniumclonia

900

1000

Hinh 9g: Ciin dd nhift DTG v i
DTA cua s^t Wyoming

Hinh 9: Gian do nhiet DTG-DTA cua
cac mau set hiru cff Binh Thuan va Wyoming


TuyIn tap bio cio H$i nghj KHCN "30 nim Dau khi Vift Nam: Cff hpi moi, thich thde mdi"

95^

tri dooi ctia set hiru co nhung lai lam tang cac gia trj luu bien cua set trong diezen va trong
hdn hgp diezen - nude.
Mau set hiiu co Wyoming-2HT-75 ed ham lugng chat hiru co (36,6%) cao hon set
Binh Thuan (33,2%) va cac tinh chat luu bien cao ban set Binh Thuan. Dieu nay chimg td
do cd ham lugng montmorillonit Na cao hon nen set Wyoming ed kha nang tiep nhan
lugng cation amin bae 4 nhieu hon.
Su tang dot biin cae gia trj PV, YP va gel lO'VlO' ciia set hiiu co trong he diezen

nude so vdi trong diezen da cho thay nude cd vai trd rat ldn trong viee tao eiu tnic cua set
hiru CO trong cac hydrocarbon. Tinh chat nay dugc ung dyng de pha dung djch khoan goc
dau. Qua gia trj lim bien trong Bang 4 cd the xep ve mat chit lugng eua cac miu set huu
CO theo thiir tu Wyoming - 2HT-75 tuang duong VG-Plus > Binh Thuan-M2HBT > Binh
Thuan 2HT-75 > Binh Thuan CB80 > Binh Thuan -2M2D.
Tren gian dd nhiet DTA-DTG cua eae mau set hiru eo nhan thay cd hieu ung toa
nhiet trong khoang nhiet do 200 - 850*^C, tai dd xay ra sy khir hap phy va chay thanh phan
him CO trong mau. Dieu nay khdng quan sat thay tren gian dd nhiet ciia bentonit Binh
Thuan da lam giau va bentonit Wyoming.
3. Bien tinh nang cao kha nang tao cau true cua set Binh Thuan
Vdi muc dich nang cao kha nang tao cau true, tir nhieu ngudn tai lieu khae nhau [6,
7] chiing tdi da chgn chat hoat ddng be mat cd cdng thuc RiR2N(C2H40)ii H (ten thuong
mai Noramox) ket hgp vdi mudi amin tham gia vao phan ung trao ddi vdi set. Chat boat
ddng be mat khi ed mat d ldp giura hai phien set se lam tang kha nang phan tan set hiru co
trong dung mdi. Lugng Noramox dua vao tham gia phan ung 10, 20, va 30%) so vdi lugng
khoang set. Tinh chat cua cac mau set hiJu co sau khi bien tinh dugc trinh bay d Bang 5 va
Hinh 10.
Bang 5: Tinh chat \wi bien cua set hiru cff Binh Thuan bien tinh vdi Noramox trong
diezen va he diezen - nirdc
Tinh chat luu bien ciia he phan tan set
hiiu CO 30 g/L (85% diezenyi5% nude)
STT

PV

Set hiiru co Binh Thuan

(cp)

YP

Gel 10"

Gel 10'

(Ib/lOOft^) (Ib/lOOft^) (Ib/lOOft^)

D DN

D

DN

D

DN

D

DN

1

Binh Thuan -2HT-75

4

10

4

30

I

28

1

30

2

Binh Thuan -2HT-75 - NOR 10%

6

12

8

43

5

38

9

46

3

Binh Thuan -2HT-75 - NOR 20%

6

11

7

41

4

37

8

45

4

Binh Thuan 2HT-75- NOR 30%

5

11

6

40

3

35

7

38


96

lVl9t so ket qua nghien cdu tdng hp-p s^t hdu co tir s6t Binh Thuan dl..

Tir ket qua neu trong Bang 5 va
Hinh 10 nhan thay khi cd Noramox
tham gia phan ung thi cac gia tri PV,
YP, cudng do gel cua set hiiu eo trong
diezen va diezen -nude deu tang len,
nhung tang nhieu nhat d 10%
Noramox.
Bang phuong phap phan tich
nhiet da xac djnh dugc ham lugng chat
hiru CO trong set hiiu eo Binh Thuan
biin tinh vdi 10%) Noramox la 39,9%),
cao ban so vdi khi chua bien tinh
(33,2%).

20

15

10

0

5

10 15 20 25 30 35
% Noramox
Hinh 10: Anh hudng cua Ivtffng Noramox
den gia trj PV, YP cua set hiru cff Binh
Thuan 2HT-75

Phd nhieu xa Ranghen, gian do
phan tich nhiet DTG, DTA cua set
Binh Thuan bien tinh bang Noramox dugc trinh bay tren Hinh 11.

S.impte M a u T H . : H T » N O R ( 7 9)

TGA-DTA

Flic C ITAVDalaVSDTIpHixyig.oZI
O^ralor Minh
RunOalo 26-OCI-04 17:37
InsMjinenr 2960 SDT V3.0F

Mtflhco RaiT>o

Commmi Cuong" Sample tale 10 C/niin »i Air

400

600
Temperature (*C)

Hinh 11: Gian do DTG-DTA va XRD cua mau set hiru cff Binh Thuan 2HT75 - Noramox (10%)
MIU set hiru co Binh Thuan - 2HT-75 - NOR 10% va miu VG-plus (dl so sanh) da
dugc sir dung lam chat tao eau true pha dung djch khoan gdc dau. Kit qua do tinh chit luu
bien cua dung dich khoan dugc trinh bay trong Bang 6.


97

TuyIn tap bio cio Hpi nghj KHCN "30 nim Diu khi Viet Nam: Co hdi mdi, thich thde mdi"

Bang 6: Tinh chat lu-u bien dung djch khoan goc dau pha tir cac mau set hiru off
Mdu set

dooi
A"

Hdm
lugng
chdt hiru
ca(%)

Dp truang
nd trong

toluen,
(cm^/g)

PV

YP

Gel IOV10"

(cp)

(Ib/lOOft^)

(Ib/IOOft^)

Binh Thuan -2HT75-NOR 10%

39,9

40,25

24

30

30

23/30

VG-Plus

32,78

33,5

17

26

30

25/30

Ghi chii: (*) Thdnh phdn dung dich khoan gde ddu:
-

Hdm luang set hieu ca: 30g/l

-

Ty li ddu/nuac: 80/20 (theo the tich)

-

Hdm luang mudi CaCh trong pha nude: 25%

-

Ty trgng dung dich: I,30g/cm (them bpt barit vdo dung djch de dgt duac ty trgng ndy)

Tir sd lieu trong Bang 6 nhan thay cac gia trj PV, YP va Gel ciia dung djch khoan
gdc dau pha tir VG-Plus va Binh Thuan-2HT75-Noramox tuong ty nhu nhau.
TAI LIEU THAM KHAO
1. European patent application 0476509 A2 (11.9.1991). A method of treated water for
organic contaminants with water dispersible modified smectite clay.
2. Jordan J.W., 1949. Mineralogy. May 28.
3. US Pat. 3865240.
4. US Pat. 5358120.
5. US Patent 4517112.
6.

Claude M., 1984. US Patent 4450095: Organophilic clay gellant having enhanced
dispersibility.

1. US Patent 4081496, 1978. Finlayson: Thixotropic polyester compositions containing
and organophilic clay gellant.