One-stage cementing

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Seal in the annulus and isolate troublesome loss zone section

Challenge

A single stage cementing operation can be requested to start cementing only above the loss zone, in case it is located at the bottom of the well.

Solution

The packer will be thus positioned and expanded in the openhole section for a one-stage cement job, once the annulus is sealed below.

 Xpandable Steel ECP-WXpandable Steel ECP-C
MountingWeldedCrimped
Valve systemFluid trapping (check valve) + safety closingLock valve closing permanently packer expansion port and trapping fluid inside packer
Sealing SystemDeformable corrosion-resistant alloy (CRA) sleeve with elastomer sealDeformable corrosion-resistant alloy (CRA) sleeve with elastomer seal
ReliabilityShort term annulus sealLife of well valve system
PerformanceHigh DeltaP achieved with moderate setting pressuresHigh DeltaP achieved with moderate setting pressures
Max Delta Pressure
Compensated
Up to 5,000 psi, lower for bigger sizesUp to 5,000 psi, lower for bigger sizes
Max DeltaP
Not Compensated
Up to 5,000 psi, lower for bigger sizesUp to 5,000 psi, lower for bigger sizes
Max temperature rating
250 degF - 120 degC250 degF - 120 degC
QualificationAPI 19 OH V2API 19 OH V2