Typical grout equipment design objectives are to:
• Ensure complete grout placement
• Minimize time required on-site
• Minimize fabrication costs
• Minimize expendable equipment
• Provide back-up systems
For each project, we work closely with you to achieve the optimum balance between equipment cost, fabrication costs, and installation and contingency requirements.
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This involves selecting the right combination of:
• Grout injection systems, including piping for grout injection
• Mud-barrier diaphragms to prevent contamination in the annulus
• Grout containment products (packers and/or seals)
In general, the primary factors in designing a complete equipment package are water depth, sleeve configuration, and number of pile sleeves. The chart below shows the various combinations of primary and back-up systems for different numbers of pile sleeves and water depths. However, installation requirements, budget constraints, and risk considerations also can play an important role.
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Depth |
2 Skirt Sleeves |
4 Skirt Sleeves |
8 Skirt Sleeves |
10 to 12 Skirt Sleeves |
|
Feet |
Primary |
Contingency |
Primary |
Contingency |
Primary |
Contingency |
Primary |
Contingency |
|
100 |
SUR |
DQD |
SUR |
DQD |
- |
- |
- |
- |
|
200 |
SUR |
DQD |
SUR |
DQD |
- |
- |
- |
- |
|
300 |
SUR |
SUR |
SUR |
SUR |
- |
- |
- |
- |
|
400 |
SUR |
SUR |
SUR |
SUR |
- |
- |
- |
- |
|
500 |
SUR |
SUR |
GDS |
SUR |
GDS |
ROV |
- |
- |
|
600 |
SUR |
SUR |
GDS |
ROV |
GDS |
ROV |
- |
- |
|
700 |
SUR |
ROV |
GDS |
ROV |
GDS |
ROV |
- |
- |
|
800 |
SUR |
ROV |
GDS |
ROV |
GDS |
ROV |
GDS |
ROV |
|
900 |
SUR |
ROV |
GDS |
ROV |
GDS |
ROV |
GDS |
ROV |
|
1000 |
SUR |
ROV |
GDS |
ROV |
GDS |
ROV |
GDS |
ROV |
|
1100+ |
ROV |
ROV |
GDS |
ROV |
GDS |
ROV |
GDS |
ROV | |
| SUR |
Surface lines |
| DQD |
Diver Quick Disconnect (for packer inflation only) |
| GDS |
Grout Diverter Station |
| ROV |
ROV Hot-Stab at pile sleeve | | | |
Oil States Industries, Inc.
Oil States International, Inc.