Smart retrievable service packer RFID leak detection

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Solution Overview

Problem

Conventional service packers in oil and gas wells often face uncertainty in identifying leaks, which can lead to inefficiencies and safety hazards during pressure testing operations, as the location of potential leak points is unclear.

Innovation Solution

A smart retrievable service packer equipped with radio frequency identification (RFID) devices positioned above and below the packer element, allowing for real-time detection and reporting of pressure leaks to a surface receiver system, combined with force sensors for additional confirmation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional service packers are used without RFID devices, then the device complexity is reduced, but the ability to identify leak locations is insufficient leading to operational uncertainties

Engineering Contradiction:
Improveleak location identificationVSAvoidpacker system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces conventional mechanical pressure testing methods with RFID-based detection technology. RFID devices are integrated into the packer system to automatically detect and communicate pressure changes and leak locations, substituting manual mechanical assessment with electronic identification and reporting mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The RFID devices act as intermediaries between the packer elements and the surface monitoring system. These devices detect pressure changes at specific locations and transmit information to the surface, enabling remote identification of leak locations without requiring direct mechanical intervention or complex manual testing procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If RFID devices are integrated into the service packer, then leak detection capability is improved, but the device complexity increases

Engineering Contradiction:
Improvepressure integrity detectionVSAvoidpacker system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The RFID devices are designed to perform multiple functions within a single integrated unit: detecting pressure changes, identifying leak locations, and communicating status information to the surface. This multi-functionality improves reliability without proportionally increasing complexity, as one device accomplishes what would otherwise require multiple separate systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The packer system with integrated RFID devices is capable of self-monitoring and self-reporting. The RFID devices automatically detect pressure integrity issues and communicate leak locations without requiring external intervention or complex manual testing procedures, enabling the system to service itself in terms of monitoring and diagnostics.

Inventive Principle:
Principle #25Self-service

3Productivity

If leak identification is uncertain with conventional packers, then operational efficiency is reduced due to resource waste, but adding RFID technology increases initial costs

Engineering Contradiction:
Improveoperational efficiencyVSAvoidresource consumption
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The RFID devices provide real-time feedback on pressure integrity and leak locations to the surface monitoring system. This immediate feedback enables operators to quickly identify and respond to leaks, preventing wasted resources on ineffective treatments and improving operational efficiency by directing resources precisely where needed based on actual leak locations.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11674380B2Smart retrievable service packers for pressure testing operations
Publication Date: 2023.06.13 SAUDI ARABIAN OIL CO
  • US11674380B2 patent drawing
  • US11674380B2 patent drawing

AI summary

Systems and methods include a method for using a smart retrievable service packer for pressure testing operations. A service packer is installed to a depth in a well. The service packer includes one or more radio frequency identification devices (RFIDs) positioned above and below a packer element of the service packer. A determination is made, by analyzing information received from the one or more RFIDs, that a pressure leak has occurred across the service packer. The pressure leak is reported to a surface receiver system at a surface of the well.