High-Performance Top Wiper Plug with PDC Drillable Core, for Well Cementing

Product Description

Product Description

 

Product Name: API Certified Top Cementing Wiper Plug

Product Overview:

The Top Cementing Wiper Plug is an essential downhole tool used in oil and gas well cementing operations. It is launched after the cement slurry to separate it from the displacing fluid (typically drilling mud or water) . Its primary functions are to wipe the casing inner diameter clean, minimize fluid contamination, and provide a positive, solid indication when it bumps against the bottom plug seated at the float collar or landing collar, signaling the complete displacement of cement .

Key Features & Advantages:

• Effective Cleaning & Separation: Features multiple wiping fins made from high-grade elastomers (such as NBR or polyurethane) that efficiently scrape residual mud and debris from the casing wall, ensuring a clean surface for optimal cement bonding and preventing contamination of the cement slurry .

• Positive Displacement Signal: Unlike the bottom plug which has a rupture diaphragm, the top plug has a solid body. When it lands on top of the seated bottom plug, it creates a noticeable pressure spike ("bump"), giving the crew a clear, positive indication that the cement has been fully displaced to the desired location .

• Reliable Sealing: The design ensures a continuous seal against the casing wall during its travel, maintaining pressure on the cement column below and helping to prevent U-tubing or backflow .

• Drillability: The core of the plug is typically made from aluminum, phenolic, or special plastics, making it easily drillable with standard PDC (Polycrystalline Diamond Compact) bits after the cement has set, facilitating subsequent drilling or completion operations .

• Durable Construction & Compliance: Manufactured from oil-resistant compounds capable of withstanding downhole temperatures and pressures. Products are designed and manufactured in compliance with API specifications, ensuring reliability and interchangeability in field operations .

• Versatile Sizing: Available in a wide range of sizes to fit various casing programs, commonly from 4-1/2 inches up to 20 inches in outer diameter .

Parameter	Specification / Description
Product Type	Top Wiper Plug (Solid Body)
Application	Primary & Secondary Cementing
Standard Sizes (OD)	4-1/2", 5", 5-1/2", 7", 9-5/8", 10-3/4", 13-3/8", 20" (Custom sizes available)
Core Material	Aluminum Alloy, Phenolic, Drillable Composite Plastic
Wiper Fin Material	NBR (Nitrile), HNBR, Polyurethane, Fluorocarbon
Number of Fins	4 - 6 (typically)
Working Pressure	2,100 psi (14.5 MPa) minimum standard
Differential Pressure Rating	Up to 3,000 psi (20.7 MPa) for standard models
Temperature Rating	-20°C to 120°C (-4°F to 248°F) for standard NBR
Drillability	Easily drillable with standard PDC bits
Key Feature	Provides positive bump pressure indication
Compliance	API Specification 10D

Typical Applications:

• Primary cementing of surface, intermediate, and production casing strings.

• Cementing operations in vertical, directional, and horizontal wells.

• Used in conjunction with a corresponding bottom wiper plug to form a complete cementing plug system.

Technical Specifications (Representative Model):

• Type: Top Wiper Plug (Solid Body)

• Standard Size Range: 4-1/2" to 20" OD (Other sizes available on request)

• Core Material: Aluminum, Phenolic, or Drillable Plastic

• Elastomer Material: NBR (Nitrile Rubber), Polyurethane, or other specified compounds

• Working Pressure: ≥ 2,100 PSI (14.5 MPa) [Standard models; higher pressure ratings available]

• Temperature Rating: -30°C to 150°C (-22°F to 302°F)

• Feature: PDC Drillable

• Compliance: API Specification (e.g., API 10D)
  
   

  Detailed Photos

   

  

This reliable tool is fundamental for achieving effective zonal isolation and ensuring the long-term integrity of the wellbore.