DESCRIPTION
MAC-GEL is processed by selected montmorillonite and complies with the requirement of API SPEC 13A. MAC-GEL is suitable for both drilling and construction industries where it is used to control viscosity , maintain drill-hole or excavation dimensions and suspend cuttings.The excellent viscosity and gel strength characteristics of MAC-GEL allows lower than normal usage rates.

 

CHEMICAL PROPERTIES

 
 
 
 
 

 

PHYSICAL PROPERTIES

 Specification
MAC-GEL
API Standard
Viscometer Dial Reading @ 600 rpm
35 min.
30 min.
Yield Point , lb/100 ft2
3Pv max.
3Pv max.
Filtrate Loss , ml
14.5 max.
15.0 max.
Dry Screen (passing 75 micron) , %
75 min
-
Wet Screen (retained 75 micron) , %
3.5 max.
4.0 max.
pH (6% suspension)
9-11
-
Moisture Content , %
10.0 max.
10.0 max.

Liquid Limit , %
500
min
Plastic Limit , %
40
min
Swelling Index
25
ml per 2 g of clay , min
Loose bulk density
0.80-0.95
g/ml
apparent settled density
1.05-1.10
g/ml
specific gravity
2.5-2.7

 

TECHNICAL CHARACTERISTICS

SPECIFICATION
CONCENTRATION
35 kgs/m3
40 kgs/m3
50 kgs/m3
0 hr.
2 hr.
16 hr.
0 hr.
2 hr.
16 hr.
0 hr.
2 hr.
16 hr.
Marsh Viscosity
R 600 dial reading
R 300 dial reading
Plastic Viscosity
Apparent Viscosity
Yield Point
Filtrate Loss
Gel Strength,10 sec
Gel Strength,30 min
pH
33
8
4
4
4
0
25.2
1
3
9.25
34
9
5
4
4.5
1
24.2
1.5
3.5
9.26
35
10
6
4
5
2
22.0
2
6
9.29
34
10
6
4
5
2
24.0
2
4
9.26
35
12
7
5
6
2
22.0
3
6
9.27
36
14
8
6
7
2
18.4
4
10
9.28
37
16
10
6
8
4
20.4
5
10
9.32
39
19
12
7
9.5
5
18.4
6
13
9.34
40
21
13
8
10.5
5
16.2
8
16
9.36

 

Additional Property

Montmorrilonite Content 70 % up