Mechanical Stage Cementing Collar

1.Mechanical type
2.Top/Closing Plug and First Stage/Flexible Plug
3.Battle Plate/Free Fall Opening Device/Battle Plate
4.Available in sizes 5-1/2" to 13-3/8"
5.Free Fall Opening Device

■ Product's advantage

>>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.

Technical Parameters:

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