API Casing Stage Collar Cementing Collar
API Casing Stage Collar Cementing CollarStage cementing collar (hereinafter referred to as stage collar) is a mechanical tool used in dual stage cementing operation. This tool can be used to divide t
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API Casing Stage Collar Cementing CollarStage cementing collar (hereinafter referred to as stage collar) is a mechanical tool used in dual stage cementing operation. This tool can be used to divide t
Stage cementing collar (hereinafter referred to as stage collar) is a mechanical tool used in dual stage cementing operation. This tool can be used to divide the required cementing section into two stages from bottom to top for cementing, and it can also be used for cementing of any formation section.The use of Stage cementing collar can reduce the annular hydrostatic column pressure, which not only reduces the possibility of well leakage in cementing operation, but also reduces the operating pressure and reduces the cementing time. At the same time, it can prevent or reduce the oil and gas flowing over the water caused by weight loss of cement slurry, which is beneficial to improve cementing Operation quality.
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.
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 |