Wellbore Stimulation Indicator for Activation Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hydrocarbon-producing wells often face challenges in selectively creating and verifying the activation of multiple fractures along a wellbore, as it is unclear whether downhole stimulation tools have been activated, leading to uncertainty about fluid communication with intended formation zones.
Innovation Solution
A wellbore servicing apparatus and method utilizing a housing with sliding sleeves and an indicator system, where the indicator is retained and released based on the position of the sleeves, allowing confirmation of tool activation and fluid communication with specific zones through the detection of the indicator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple stimulation assemblies are positioned within a wellbore to create multiple fractures, then the ability to selectively access multiple zones is improved, but the difficulty in detecting whether each assembly has been activated deteriorates
Solution Approach 1:
The patent implements a feedback mechanism by releasing an indicator from the stimulation assembly when it is activated. This indicator can be detected by a detector, providing real-time feedback on the activation status of each stimulation assembly, thereby resolving the difficulty in detecting whether tools have been activated.
Solution Approach 2:
The indicator released upon activation may utilize visual characteristics such as color changes or distinct visual properties to signal the activated state of the stimulation assembly. This allows for easy detection and confirmation of activation status.
2Reliability
If an indicator system is added to verify tool activation, then the reliability of fluid communication is improved, but the device complexity deteriorates
Solution Approach 1:
The indicator is extracted as a separate, simple element that can be easily released and detected. This separates the verification function from the main stimulation assembly structure, adding reliability without significantly increasing overall device complexity.
Solution Approach 2:
The indicator acts as an intermediary element between the stimulation assembly and the detection system. It provides a simple, detectable signal that confirms activation without requiring complex integration into the stimulation assembly itself.
Data Source
AI summary
A wellbore servicing apparatus is disclosed that includes a housing having one or more ports, a first sliding sleeve that is movable from a first position to a second position, a second sliding sleeve that is movable from a first position to a second position, a chamber within the housing, and an indicator within the chamber. When the first sliding sleeve is in the first position, the ports are obstructed and the second sliding sleeve is retained in the first position. When the first sliding sleeve is in the second position, the ports are unobstructed and the second sliding sleeve is not retained in the first position. When the second sliding sleeve is in the first position, the indicator is retained within the chamber. When the second sliding sleeve is in the second position, the indicator is not retained in the chamber.