Forum Energy Technologies’ Davis-Lynch™ Stage Cementing Equipment is designed to meet the rigorous demands of modern well construction. With a legacy dating back to 1947, Davis-Lynch has been a trusted name in float equipment and cementing solutions. Today, our stage cementing tools and casing packers continue to set industry standards for reliability, drillability, and sealing performance.

Stage Collars

Our comprehensive range of stage cementing equipment includes:

  • Mechanical Stage Cementing Collars (Type 778 MC)
    Engineered for high-pressure environments, these collars feature metal-to-metal seals and back-up elastomer seals for gas-tight integrity. The reduced tool length minimizes bending stress, while locking sleeves ensure easy drill-out.
  • Hydraulic-Opening Stage Cementing Collars (Type 777 HY)
    Ideal for horizontal wells, these collars offer adjustable opening pressures and eliminate the need for mechanical opening devices. They enable precise cement placement and zonal isolation.
  • Composite Stage Cementing Collars
    Featuring a high-strength composite opening seat, these collars reduce drill-out time by over 10% and eliminate continuous composite rings that can hinder PDC bit performance. Rated up to 350°F, they offer superior sealing and durability.
  • Packer Stage Cementing Collars (PSC)
    Combining inflatable packers with stage cementing collars, PSC tools provide zonal isolation, reduce HSE risks, and minimize non-productive time. The PSC-M Composite model integrates the 778-MCCS collar with the Type 100 Integral Casing Packer for enhanced operational efficiency.

Casing Packers

Davis-Lynch™ casing packers are engineered to provide reliable annular isolation in challenging wellbore conditions. These tools are essential for multi-stage cementing operations and are compatible with a wide range of casing sizes and grades.

  • Type 100 Integral Casing Packer
    A robust, field-proven inflatable packer designed for use with stage cementing collars. It features a bonded elastomer element for superior sealing and is ideal for high-pressure, high-temperature (HPHT) environments.
  • Inflatable Packers
    Designed for use in open-hole or cased-hole applications, these packers expand to conform to irregular borehole geometries, ensuring a secure seal and effective zonal isolation.
  • Benefits of Davis-Lynch Packers:
    • High expansion ratios for versatile deployment
    • Reliable sealing in irregular or washed-out holes
    • Compatible with composite and mechanical stage tools
    • Reduces the risk of channeling and improves cement bond integrity

Key Features & Benefits

  • High-Strength Materials: Available in grades up to 150,000 psi yield strength, including sour gas service options.
  • Superior Sealing: Metal-to-metal and elastomer seals ensure pressure integrity.
  • Efficient Drill-Out: Minimal aluminum and rubber components for faster, cleaner drill-out.
  • Customizable Designs: Compatible with most casing grades and thread types.
  • Temperature Resilience: Rated for operations up to 375°F with specialized seals.
  • Field-Proven Reliability: Trusted by operators worldwide for over two decades.

Applications

  • Multi-stage cementing in vertical, deviated, and horizontal wells
  • Zonal isolation in sensitive formations
  • Cementing across slotted or pre-drilled liners
  • Reducing remedial cementing and flat time
  • Annular isolation in open-hole completions

Why Choose Davis-Lynch™?

With decades of innovation and field-proven success, Davis-Lynch™ stage cementing equipment and casing packers deliver unmatched performance, safety, and cost-efficiency. Whether you’re drilling onshore or offshore, our tools are engineered to help you achieve optimal cement placement and long-term well integrity.