Plunger Lift Data Logger for Downhole Measurement
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Solution Overview
Problem
Conventional methods for measuring downhole conditions in oil and gas wells require expensive equipment and well shutdowns, as they rely on wireline rigs to deploy and retrieve data loggers, which is inefficient and costly for operators.
Innovation Solution
A waterproof temperature and/or pressure sensor and data logger integrated into a plunger lift apparatus, allowing for downhole data collection and retrieval without a wireline rig, with a screw-off attachment and shock absorber for the data logger/sensor assembly, enabling easy detachment and data processing upon retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireline rigs are used to deploy and retrieve data loggers, then measurement capability is achieved, but equipment cost and operational complexity increase
Solution Approach 1:
The patent combines the data logger with the plunger lift apparatus, merging two separate systems (data collection device and well lifting apparatus) into a single integrated unit. This allows the data logger to be deployed and retrieved as part of the normal plunger operation, eliminating the need for separate wireline rig equipment and reducing overall system complexity.
Solution Approach 2:
The plunger lift apparatus is given multiple functions: it continues to perform its original function of lifting well fluids while simultaneously serving as a housing for the data logger and providing a platform for downhole measurements. This multi-functionality eliminates the need for dedicated wireline rig equipment and reduces operational complexity.
2Measurement precision
If wireline rigs are used to deploy and retrieve data loggers, then measurement capability is achieved, but operational time and shutdown requirements increase
Solution Approach 1:
By merging the data logger with the plunger lift apparatus, the patent enables simultaneous operation of both functions. The data collection occurs during normal well production and plunger operation, eliminating the need to shut down the well for wireline rig operations and reducing time loss.
Solution Approach 2:
The data logging function continues uninterrupted during normal well production and plunger lift operation. The sensors remain active and collect data continuously as the plunger moves through the well, eliminating the need to stop production for data collection and maintaining continuous useful action.
3Productivity
If data loggers are integrated into plunger lift apparatus, then operational efficiency improves, but device complexity increases
Solution Approach 1:
The patent segments the data logger into a separate module that can be attached to or removed from the plunger lift apparatus. This modular segmentation allows the data collection functionality to be added without permanently complicating the base plunger design, and enables easy installation and retrieval operations.
Solution Approach 2:
The plunger lift apparatus serves as an intermediary carrier for the data logger, providing a mechanical interface that allows the data collection device to be integrated into the existing well infrastructure. This intermediary approach avoids direct integration that would complicate the plunger design while enabling functional integration.
4Measurement precision
If conventional data collection methods are used, then measurement accuracy is achieved, but cost effectiveness decreases
Solution Approach 1:
By merging the data logger with the plunger lift apparatus, the patent eliminates the need for expensive wireline rig equipment and associated operational costs. The existing plunger system serves dual purposes, significantly reducing the cost effectiveness barrier to downhole measurement.
Solution Approach 2:
The plunger lift apparatus performs its own function of lifting fluids while simultaneously serving as the deployment and retrieval mechanism for the data logger. The system uses its own operational cycle to accomplish data collection, eliminating the need for separate expensive wireline services and improving cost effectiveness.
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
Enables efficient and cost-effective measurement of downhole conditions without the need for wireline rigs, allowing wells to remain operational during data collection and facilitating easier data processing, thereby improving operational efficiency and reducing costs for well operators.
Implementation Method 1
with a screw-off attachment and shock absorber for the data logger/sensor assembly
Data Source
AI summary
A downhole plunger for oil and gas wells comprises an electronic ambient environmental sensor via a cargo bay. Although the sensor is preferably a downhole time, temperature, pressure and flow sensor, the device contemplates the use of any appropriate cargo to ascertain well conditions. The device can also be used to sample fluid. The sensor has a measured data memory.