SF Cementor® Stage Collar

Cementing Tool for Monobore Completions

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 Packers Plus SF Cementor and SF Cementor D stage collars are designed to reduce operational risk through a built-in secondary closure mechanism with no inside diameter restriction. The SF Cementor is designed to be opened and closed without the use of a wiper plug or dart. Meanwhile, the Cementor D design enables the stage collar to be opened and closed without any mechanical movement at surface.

The SF Cementor 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 Stage Collar

Learn more about Cemented Liner Completions with the SF Cementor


See what the SF Cementor stage collar is made of

SF Cementor Stage Collar

The SF Cementor stage collar is a hydraulically opened, mechanically closed stage cementing tool. It is used to cement the vertical and build section above open hole multi-stage systems in monobore wells. The SF Cementor stage collar design allows it to be closed without the use of a wiper plug or dart, which eliminates the need for a cement head and reduces post-cement cleanout operations, debris issues and associated costs. The SF Cementor stage collar is also available in a HPHT design rated to 15,000 psi (103 MPa).

SF Cementor D Stage Collar

The 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 development of the Packers Plus SF Cementor stage collar has further helped operators improve operational efficiencies of open hole, cemented-back completions by reducing the number of cleanout trips required

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SF Cementor improves efficiency of monobore well construction

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SF Cementor reduces time and cost in monobore wells

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

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Liner hanger and cementing stage collar combine to overcome challenging geology

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

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

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175384 – Unique Application of a Cementing Stage Tool with an Open Hole Multistage Completion System in Saudi Arabia

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2172470 – Cemented-back monobore reduces well cost and frac time in the Wolfcamp

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171585 – Reducing Cost and Risk with Cemented-Back Monobore Well Construction in the Cardium Formation

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Innovative cementing system reduces cleanout costs prior to well completions

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Packers Plus SF Cementor reduces well cost and operation time in the Wolfcamp

 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

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

TREX Single Point Entry

Cemented Diffusor Sleeves