Self-Sealing Perforating Apparatus Debris Containment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Perforating and fracturing in wellbores often create debris that can damage equipment and formations, leading to costly remedial work and equipment replacement, as existing technologies fail to effectively prevent debris from entering the wellbore.
Innovation Solution
A perforating apparatus incorporating a self-sealing material that seals or partially seals exit holes, trapping debris inside the apparatus and preventing it from entering the wellbore, while maintaining compatibility with explosive materials and withstanding subterranean conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If perforating and fracturing operations are performed to establish communication between reservoir and wellbore, then production capability is improved, but debris is generated that damages equipment and formation
Solution Approach 1:
The harmful debris is extracted from the system by trapping it inside the perforating apparatus. The self-sealing material seals the exit holes after perforation, removing debris from the wellbore environment and containing it within the apparatus structure.
Solution Approach 2:
The debris that would normally be harmful is converted into a contained element within the apparatus. By sealing the exit holes, the debris becomes trapped and potentially reusable or at least harmless, transforming a harmful byproduct into a contained element.
2Reliability
If self-sealing material is used to seal exit holes and trap debris, then debris damage is prevented, but the apparatus structure becomes more complex
Solution Approach 1:
The self-sealing material functions as a flexible sealing component that lines the exit holes. This thin film or shell structure provides effective sealing without requiring complex mechanical systems, maintaining relative simplicity while achieving reliable debris containment.
Solution Approach 2:
The self-sealing material automatically seals the exit holes after perforation without requiring external intervention or complex control systems. The material's inherent properties enable it to seal the holes, providing a simple yet effective solution that reduces overall apparatus complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The self-sealing material effectively seals exit holes, minimizing debris entry into the wellbore, reducing damage and maintenance costs, and ensuring the integrity of the perforating apparatus and formation perforations.
Implementation Method 1
the self-sealing material may include an expandable polymer material or a swelling elastomer
Implementation Method 2
After the explosive train has been fired and the perforating jet and/or charge payloads have been discharged
Data Source
AI summary
A perforating apparatus incorporating a selective self-sealing material is disclosed for sealing exit holes in a wall of the apparatus resulting from perforation operations. The perforating apparatus traps debris produced during downhole perforation operations and prevents the debris from entering the wellbore which avoids the need for remedial operations to remove debris from the wellbore. The self-sealing material may be disposed within the perforating apparatus adjacent to an interior surface of the wall or the self-sealing material may be disposed outside the perforating apparatus adjacent to an exterior surface of the wall. The self-sealing material may include an expandable polymer material, a swelling elastomer, a rubber and combinations thereof.