Wire Wrapped Screen

Test Your Knowledge

Wire Wrapped Screens Quiz

Instructions: Choose the best answer for each question.

1. What is the primary function of wire wrapped screens?

a) To prevent the flow of fluids in a wellbore. b) To increase the pressure drop across a wellbore. c) To prevent sand and other solid particles from entering wellbores. d) To enhance the rate of fluid flow in a wellbore.

2. What is the base material of a wire wrapped screen?

a) Plastic b) Ceramic c) Perforated pipe (typically steel) d) Wood

3. What is the key advantage of wire wrapping in a wire wrapped screen?

a) It reduces the pressure drop across the screen. b) It allows for precise control over the opening size. c) It increases the durability of the screen. d) It allows for a wider range of applications.

4. Which of the following is NOT a benefit of using wire wrapped screens?

a) High durability b) Precise control c) Low pressure drop d) Increased risk of corrosion

5. Where are wire wrapped screens commonly used?

a) Only in oil and gas production b) Only in water well applications c) Only in mining and chemical processing d) In all of the above applications

Wire Wrapped Screens Exercise

Scenario: You are designing a wire wrapped screen for an oil well. The well produces a high volume of sand-laden fluids. You need to select the appropriate wire wrapping material and opening size.

Requirements:

• Consider the following factors:
  • High sand content in the well fluids.
  • The need for high durability to withstand high pressure and abrasive sand particles.
  • Minimizing pressure drop to ensure optimal fluid flow.
• Choose a wire wrapping material suitable for the harsh conditions.
• Determine the appropriate opening size to effectively filter out sand while minimizing pressure drop.

Instructions:

• Research different wire wrapping materials and their properties.
• Consider the trade-offs between durability, opening size, and pressure drop.
• Explain your reasoning for the chosen material and opening size.

Techniques

Chapter 1: Techniques

Wire Wrapping Techniques for Sand Control Screens

The precise and controlled method of wire wrapping is crucial for achieving the desired filtration capabilities of wire wrapped screens. Various techniques are employed, each contributing to the screen's performance and durability.

1. Wire Type and Shape:

• Material: Stainless steel is the most common material due to its corrosion resistance and strength. Other materials include Inconel and Monel for specific applications.
• Shape: The wire is typically shaped into a square, triangular, or rectangular profile. The shape determines the opening size and flow pattern.

2. Wrapping Methods:

• Manual Wrapping: A skilled operator wraps the wire manually around the base pipe, ensuring consistent tension and precise placement.
• Automated Wrapping: Specialized machinery automates the wrapping process, offering high precision and faster production times.
• Helical Wrapping: The wire is wound in a helical pattern, creating a spiral effect. This technique is particularly effective for preventing sand from entering the screen.

3. Tension Control:

• Manual Tensioning: The operator uses tools to control the tension applied to the wire during wrapping.
• Automated Tension Control: Advanced machines monitor and adjust tension levels for consistent quality.

4. Overlap and Spacing:

• Overlap: The wire strands overlap at each turn, creating a more robust and durable structure.
• Spacing: The spacing between the wire turns determines the opening size and filtration capabilities.

5. Additional Features:

• Beading: A small bead of wire is often applied at the top and bottom of each hole to create a tighter seal.
• Braiding: Additional wires are braided into the main wire, enhancing strength and preventing sand from entering the screen.

6. Quality Control:

• Visual Inspection: Screens are visually inspected for defects, proper wire wrapping, and spacing.
• Dimensional Measurement: The opening sizes are measured to ensure they meet the specified tolerances.
• Pressure Testing: Screens are subjected to pressure tests to evaluate their structural integrity and fluid flow characteristics.

Conclusion:

The choice of wire wrapping technique depends on factors such as the desired opening size, application environment, production volume, and cost considerations. By employing the right techniques and stringent quality control, wire wrapped screens provide reliable and durable solutions for sand control applications.