Casing Liner Device with Polished Bore Receptacle for Single-Trip Wellbore Installation
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Solution Overview
Problem
Current wellbore casing systems require multiple trips into the wellbore for tie-back operations, increasing time and cost, and may have weak points that lead to integrity issues due to the use of standard casing strings with external casing packers, mid-string packers, or differential valves.
Innovation Solution
A casing liner system that includes a polished bore receptacle (PBR) connected to a liner hanger outside the wellbore, with a packer and environmental sensors (temperature and pressure) to detect conditions, allowing a connected structure to be run into the wellbore in a single operation, reducing trips and enhancing integrity monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard casing strings with external casing packers, mid-string packers, or differential valves are used to isolate secondary reservoirs, then isolation capability is improved, but device complexity increases and reliability decreases due to weak points that may become leak paths
Solution Approach 1:
The patent combines the PBR, packer, and casing liner device into a single integrated assembly that is run into the wellbore as one unit. This merging eliminates the need for separate components that create weak points, while maintaining the isolation capability through the integrated packer mechanism.
Solution Approach 2:
The PBR is pre-installed in the wellbore before the casing liner device is run in. This preliminary action allows the subsequent single-trip operation to complete both the liner installation and isolation functions without requiring additional trips or complex in-situ assembly, thereby improving reliability.
2Manufacturing precision
If multiple trips into the wellbore are performed for tie-back operations, then proper installation and cementing can be achieved, but loss of time increases and productivity decreases
Solution Approach 1:
The PBR, packer, and casing liner device are merged into a single pre-assembled unit that can be installed in one trip. This eliminates multiple trips while maintaining installation quality through pre-assembly verification and integrated design that ensures proper cementing and positioning.
Solution Approach 2:
The PBR is pre-installed and the packer is pre-connected to it before the casing liner device is run in. This preliminary preparation enables the subsequent single-trip operation to complete the entire tie-back process efficiently without requiring multiple trips, thereby improving productivity.
3Reliability
If environmental sensors are added to the casing liner device, then monitoring capability is improved, but device complexity increases
Solution Approach 1:
The environmental sensors are integrated into the casing liner device to provide self-monitoring capabilities during installation and operation. The sensors automatically detect temperature, pressure, and other environmental conditions, enabling real-time well integrity monitoring without requiring additional external monitoring equipment or complex external control systems.
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
This approach reduces the number of trips into the wellbore, saves time and cost, and enables real-time monitoring of environmental conditions to detect leaks and ensure well integrity, particularly in high-pressure, high-temperature environments.
Implementation Method 1
The environmental sensors may include a temperature sensor for sensing a temperature within the wellbore
Implementation Method 2
The environmental sensors may include a pressure sensor for sensing a pressure within the wellbore
Data Source
AI summary
An example method includes connecting a casing liner device to a polished bore receptacle (PBR) of a liner hanger outside of a wellbore. The PBR includes a first connection mechanism. The casing liner device includes second connection mechanism that connects to the first connection mechanism. The casing liner device connected to the PBR is run into the wellbore in tandem.