Xi'An Tiptop Machinery Co., Ltd.
Xi'an Tiptop Machinery Co., Ltd. Oilfield Comprehensive Solution Provider One-Stop Procurement Service Provider Downhole Drilling Tools Expert
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Oilfield Cementing Tools, Mechanical and Hydraulic Stage Cementing Collar
Mechanical Stage collar allows cementing of casing string in two stages. These collar set the standard for reliability, cost effectiveness, and ease of use with outstanding built-in features and quality. They are the collars of choice when drilling requirements call for proven technology and low risk. The compact, simple design minimizes the number of moving parts and makes the tools easier to handle.
The collar's clear opening and closing indications at the surface accommodate the hydraulic conditions of the well for safer, more efficient operations. The internal sleeves increase reliability and prevent premature opening from formation restrictions on applied pressures. It reduces total pumping pressure in long casing strings.
Hydraulic stage collar meets the challenges of cementing holes at any angle with a hydraulically opened port system. Stage collar designed specifically for horizontal completion. It is specifically used for Primary cementing in deep vertical or high deviated horizontal-well conditions. It reduces total hydrostatic pressure on weak formations to prevent lost circulation during cementing.
Clear surface indications of opening and closing pressures provide safer and more efficient operations.
The opening pressure of the stage collar can be adjusted at rig site to meet well requirements, providing operational flexibility.
Specification
| Size (in) | 5 1/2” | 7” | 9 5/8” | 13 3/8” |
| Max O.D. (mm) | Φ170 | Φ208 | Φ283 | Φ381 |
| Drill-out I.D. (mm) | Φ122 | Φ155 | Φ220 | Φ315 |
| Overall Length (mm) | 1082 | 1182 | 1222 | 1280 |
| Rated Load (t) | 140 | 170 | 210 | 300 |
| Sealing Capacity (MPa) | 25 | 25 | 25 | 25 |
| Opening Pressure (MPa) | 13 | 13 | 13 | 14 |
| Closing Pressure (MPa) | 5 | 5 | 5 | 5 |
| Lower Sliding Sleeve I.D. (mm) | Φ85 | Φ115 | Φ176 | Φ203 |
| Upper Sliding Sleeve I.D. (mm) | Φ95 | Φ125 | Φ197 | Φ285 |
