STAGE CEMENTING COLLAR

STAGE CEMENTING COLLAR
Multiple-stage cementing tools allow for selected intervals around the casing string to be cemented at separate times or in stages. Two stage cementing is the most common of the multiple-stage cementing techniques .New technologies and techniques have led to the use of lightweight cement solutions in some situations that would conventionally call for multiple-stage cementing.

Mechanical Stage collar

　　Mechanical Stage collar ( Mechanical stage cementing tool) 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.

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