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DESCRIPTION - EZ-SPACER is a one-sack spacer system that is mixed with water to make a water-based spacer system to use ahead of cementing for primary, squeeze and remedial cementing operations. Spacers are used to keep the drilling fluid and cement slurry separated while cementing a well.
ADVANTAGES
• EZ-SPACER hydrates rapidly which eliminates the need for pre-mixing and holding the fluid to allow time for the spacer to yield.
• The spacer can be shipped to location on pallets rather than using bulk liquid tank space.
• EZ-SPACER is designed to make preparation of the spacer simple and convenient on location.
• The customer can furnish spacer weighting materials, such as barite.
• The spacer density can be easily modified on location to meet job requirements.
APPLICATION
• Since EZ-SPACER is a one sack system, all that is additionally required is barite and water to prepare the spacer.
• The spacer volume on a primary cement job generally provides a contact time of about 10 minutes. For some casing sizes and hole sizes this could be a very large volume. Normally, this volume is then limited to about 1000 annular feet. For remedial operations the volume is normally limited to about 10 bbl.
PROPERTIES
• Light Brown Powder
• Specific Gravity – 2.1
• Packaged in 50 lb. bags
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EZ-SPACER
Spacer Density – 12.0 lb./gal.
EZ-SPACER (1 sk), Barite (166 lb.), Water (34.5 gal.) |
| Temperature, °F |
72º |
190º |
*72º |
*190º |
| Apparent Viscosity, cP |
21 |
22 |
17.5 |
22 |
| 600 rpm Reading |
42 |
44 |
35 |
44 |
| 300 rpm Reading |
28 |
31 |
32 |
44 |
| Plastic Viscosity, cP |
14 |
13 |
3 |
0 |
| Yield Point lb./100 ft.2 |
14 |
18 |
29 |
44 |
| 200 rpm Reading |
24 |
28 |
28 |
44 |
| 100 rpm Reading |
19 |
26 |
26 |
45 |
| 6 rpm Reading |
11 |
27 |
25 |
43 |
| 3 rpm Reading |
11 |
26 |
31 |
45 |
| Free water, cc |
| 30 min. |
0 |
|
0 |
|
| 1 hour |
0 |
|
0 |
|
| 3 hours |
0 |
|
0 |
|
* Hot rolled for 24 hr. @ 300°F; cooled down to 75°F and stirred on a Hamilton Beach
mixer for 10 minutes before taking rheology readings.
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