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Real Results

Performance By The Numbers

WCGB-300 Latex Powder

Enhances Gas Migration Control, Ensures Good Cement Bonding in Debut Deployment, Enhances Long-Term Well Stability

Objectives

  • Enhance gas migration control to prevent gas channeling and ensure well integrity.
  • Improve cement bonding for better zonal isolation and long-term well stability.
  • Implement latex powder technology for the first time, offering safer handling and more efficient fluid mixing compared to traditional liquid latex.

Our Approach

  • The Weatherford team conducted a thorough evaluation of well conditions, gas migration risks, and cementing challenges including a review of the historical cementing performance. The experts identified the need for improved gas control and bonding.
  • The team chose the WCGB-300 latex powder technology for the first time to enhance gas migration control and cement bonding. The engineers selected a powder-based latex over liquid latex for safer handling and faster mixing, improving operational efficiency. They designed an optimized cement slurry formulation, ensuring compatibility with downhole conditions.
  • The Weatherford engineering team conducted comprehensive lab testing to validate the performance of the latex powder under well conditions, including a cement hydration analysis (CHA) test, to evaluate slurry performance and stability. To optimize fluid properties for improved placement and bonding, the team adjusted the yield point (YP) to 18-20.
  • Field personnel successfully mixed and pumped the latex-enhanced cement slurry, ensuring efficient placement and uniform coverage. They monitored the job in real time to verify slurry stability, density, and displacement efficiency.
  • The operator achieved enhanced gas migration control, preventing gas channeling and ensuring well integrity. The project ensured good cement bonding, improving zonal isolation and long-term well stability.

Value to Customer

  • The job successfully demonstrated the operational benefits of the WCGB-300 latex powder, marking a first-time use with proven performance in handling, mixing, and cement placement.
  • Effective gas migration control was achieved, preventing gas channeling and ensuring zonal isolation and long-term well integrity.
  • Cement bond quality was enhanced, strengthening the sheath and minimizing the risk of annular gas migration or future integrity failures.
  • The use of the WCGB-300 powder improved safety by eliminating hazardous handling risks, spills, and chemical exposure associated with liquid latex.
  • Environmental impact was reduced by avoiding the storage, disposal, and transport challenges linked to liquid additives.
  • Operational efficiency was improved through faster slurry preparation and reduced mixing times, enabling better job scheduling and reduced nonproductive time (NPT).
  • Cost savings were realized in both equipment requirements and overall job execution, resulting in a more economical cementing operation.
  • The project concluded with a smooth and successful well completion, reinforcing the viability of powdered latex for future operations.

Learn More

Cementing
 
Pressure Control
 
Print Version
Details

Location

Qatar

Well Type

Oil producer

Field and Formation

Dukhan, Arab-D

Hole Size and Angle

8-1/2 in., 90°

Casing

9-5/8 in., 47 lb./ft K-55 BTC

Liner

7 in., 26 lb/ft L-80

Temperature

197°F (91°C)

Pressure

2,831 psi (19.5 MPa)

Measured Depth

8,652 ft (2,637 m)

Products/Services

WCGB-300 Latex Powder

Contact Weatherford

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