SF Cementor® D Stage Collar

Cementing Tool for Monobore Completions

The Packers Plus SF Cementor D stage collar is designed to be hydraulically opened and closed using an actuation ball or specialized wiper plug. This design enables the stage collar to be opened and closed without any mechanical movement at surface.

Cemented-back monobore well construction involves cementing the vertical and build sections of a well from the heel back to surface with a stage tool, rather than running intermediate casing. This technique reduces total wellbore construction costs, and eliminates trips needed to remove the running string and install the fracture string. The stage tool is run as part of the system liner in open hole, multi-stage completions.

The SF Cementor D stage collar offers many features and benefits

Reduced wellbore construction costs by elimination of intermediate casing

Lower risk of lost stages using integrated secondary closure sleeve with no loss of inside diameter

Reduces time and cost of clean-out operations

SF Cementor D Stage Collar

Learn more about Cemented Liner Completions with the SF Cementor line of stage tools


See what the SF Cementor D stage collar is made of

SF Cementor D Stage Collar

The StackFRAC® (SF) Cementor® D stage collar is a hydraulically opened stage cementing tool that is closed using an actuation ball or specialized wiper plug. It is used to cement the section above Packers Plus open hole multi-stage systems. The SF Cementor D stage collar design allows it to be opened and closed without any mechanical movement at surface.

Debris Sub

The Debris Sub is used in conjunction with cementing stage tools such as the SF Cementor stage collar. The main functions of the Debris Sub are to provide a barrier to cement stringers or debris during cementing, and to act as a platform for clean-up operations. The Debris Sub accepts a standard Packers Plus actuation ball, and can be fully milled out to regain communication with the tool string.

The Packers Plus SF Cementor D stage collar helps operators improve operational efficiencies of open hole, cemented-back completions and can be combined with a liner hanger to cement-back zones above the target depth

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SF Cementor D combined with liner hanger overcome challenging geology

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Well Construction Versatility: Reducing costs and mitigating risk for cemented-back completions using stage tool technology

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Unique application of SF Cementor D Stage Collar improves reservoir coverage in sidetrack lateral

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StackFRAC HD cemented off-bottom open hole completion establishes baseline for efficient and economic completions

 Our commitment to quality

Packers Plus successful stimulation services begin with a fully integrated quality assurance and quality control (QA/QC) process that begins at the design stage and follows each tool through manufacturing, assembly, testing, shipping and installation. Automation and robotics are incorporated into our proven process to ensure consistency and repeatability of key criteria in each step as we design, develop and manufacture our patented tools and systems. As a commitment to quality and meeting stringent standards, Packers Plus has achieved ISO 9001 certification and  API Q1 Certification for our manufacturing and engineering operations in Edmonton, AB, and ISO 9001 in Houston, TX.

Read more about our world-class manufacturing capabilities.

Our systems & solutions


TREX™ Lightning Frac Plugs

TREX™ Lightning Frac Plugs

AeroSTAT™ Glass Barrier Sub

Improve Completion System Installation

SF Cementor D Stage Collar

Cementing Tool for Monobore Completions

TREX PrimeSET Liner Hanger

PrimeSET Liner Hanger

StackFRAC HD-X System

Multi-Stage Ball-Drop Completions

TREX Limited Entry

Cemented QuickPORT IV Sleeves

Inferno™ Ball-Activated Steam Valve

Advanced Completion Technology for SAGD Operations

StackFRAC Slimhole System

Restimulation & Well Recovery

ePLUS Retina Monitoring System

Combining Electronics with Reliability

SwellPLUS Packer

Swellable Zonal Isolation