Fidelis™ Stage Cementer

The Fidelis™ stage cementer is a precision-built, multiple-stage cementing tool constructed to enable placement of cement in stages. After the cementing operations are completed and the internal sleeves are closed, the tool is designed to withstand the cyclic loading from geo-mechanical stresses throughout the life of the well to help maintain wellbore integrity. The tool’s functional purpose is specifically for the cementing operation, but the resiliency of the tool contributes to wellbore integrity during the cumulative stresses of later well events such as well testing, injection and stimulation treatments and production cycling.

The Fidelis stage cementer provides fluid shut off by means of an internal closing sleeve and two sets of high-pressure seals on either side of the flow ports. Dual lock rings on the closing sleeve latch into the outer case and lock the tool closed after completion of the second cementing stage, retaining structural integrity. The internal closing sleeve is inside the tool and is supported externally by the case of the tool, which is made up as an integral part of the casing string. Large packer-type seals are used to seal the ports using a special compound for long-term sealing capability. This PDC-drillable tool is designed with a larger outer diameter than the casing couplings to provide space for the internal sleeves and to maintain full casing strength.

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