Cementing Tool for Monobore Completions
The Packers Plus StackFRAC® (SF) Cementor® stage collar is designed to be opened and closed without the use of a wiper plug or dart. This innovative tool is used for cemented-back monobore completions to reduce debris issues and post-cement cleanout costs.
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. Conventional stage tools require a wiper plug or dart to close the tool after cementing is complete. The wiper plug, along with any remaining debris, must be drilled out of the system before balls are dropped into the liner to actuate the open hole system. This can be a costly and time consuming process. The SF Cementor stage collar requires fewer cleanout trips, and well stimulation can commence immediately following mill-out of the remaining cement and Debris Sub.
Elimination of intermediate casing reduces wellbore construction costs
Hydraulically activated, mechanically closed with compression of tubular
Integral secondary closure sleeve with no loss of inside diameter (ID)
Reduces number of clean-out trips required
Single drill-out with no additional intervention necessary
Compatible with other Packers Plus systems and tools
Optional HPHT design rated to 15,000 psi (103 MPa)
Questions? Need more information?
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
SF Cementor improves efficiency of monobore well construction
SF Cementor reduces time and cost in monobore wells
Open hole horizontal wells
Cementing back of vertical and build sections
Monobore well design
Tight oil and gas formations
Questions? Need more information?
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).
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 open hole multi-stage system is installed from a rig by spacing out tools on production liner.
The SF Cementor stage collar is run as part of the system liner above the uppermost packer which provides a barrier between the cement and open hole lateral during cementing operations.
A Debris Sub is run below the uppermost packer to prevent debris from traveling down the production liner during cementing operations.
Completion fluid is pumped from surface through the system. A specialized ball is pumped to the Toe Circulation Sub to close off flow with the annulus. This allows hydraulic pressure to build inside the system.
This pressure sets the RockSEAL® packers to isolate sections of the wellbore into individual stages. A ball is dropped into the system to close the Debris Sub.
The SF Cementor stage collar is opened by further increasing hydraulic pressure providing a circulation path for cement to be placed in the annulus above the uppermost packer.
After the cement is placed, the SF Cementor stage collar is mechanically closed and locked by lowering the casing and applying compression.
The remaining cement and Debris Sub are milled out and a cleanout trip is performed.
Well stimulation operations can now commence.
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.
Contact our Regional General Managers for more information