Multi-Probe Formation Sampling with Integrated Packer Isolation
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Solution Overview
Problem
Existing downhole testing and sampling instruments face challenges in obtaining clean formation fluid samples due to operational realities such as drilling fluid infiltration, requiring multiple functionalities with different operational properties to overcome these challenges.
Innovation Solution
A multi-probe formation sampling instrument that integrates probe style modules and inflatable packer style modules into a single tool, allowing for multiple operational modes, including simultaneous or independent use of both modules, to isolate and collect samples efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple different functionalities are deployed with different operational properties to overcome challenges of testing and sampling, then the ability to obtain clean formation fluid samples is improved, but the device complexity increases
Solution Approach 1:
The patent combines probe style modules and inflatable packer style modules into a single integrated downhole tool. The probe module includes multiple probes with ports for fluid sampling, while the packer module includes inflatable elements that can seal against the wellbore wall. These previously separate functionalities are merged into one tool that can operate in multiple modes (probe-only, packer-only, or combined mode) to obtain clean formation fluid samples while reducing the need for multiple separate devices
Solution Approach 2:
The downhole tool is designed with universal multi-functionality, allowing it to perform both probe-based sampling and packer-based isolation in a single device. The tool can switch between different operational modes depending on formation conditions, making it adaptable to various downhole environments and challenging formations. This multi-functionality resolves the contradiction by providing reliable sampling capability across different scenarios without requiring multiple specialized devices
2Productivity
If probe style modules and inflatable packer style modules are integrated into a single tool with multiple operational modes, then the productivity of sample collection is improved, but the device complexity increases
Solution Approach 1:
The patent merges probe style modules and inflatable packer style modules into a single integrated tool. The probe module contains multiple probes that can independently sample formation fluid, while the packer module includes inflatable elements for isolating formation zones. By combining these functionalities in one tool, the system achieves faster and more efficient sample collection compared to using separate devices, while the integrated design manages the complexity through shared structural components
3Measurement precision
If multiple functionalities with different operational properties are used to handle drilling fluid infiltration and pressure control, then the measurement precision of formation properties is improved, but the ease of operation decreases
Solution Approach 1:
The downhole tool provides universal multi-functionality with automated operational modes that simplify user interaction. The tool can operate in probe mode, packer mode, or combined mode depending on formation conditions, with the control system automatically selecting appropriate configurations. This multi-functionality maintains high measurement precision for formation properties while reducing operational complexity through integrated control, resolving the contradiction between precision and ease of operation
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 rapid collection of clean formation fluid samples in various formations, including low mobility ones, by providing flexible operation and faster pumping capabilities, reducing deployment costs.
Implementation Method 1
a fluid port or multiple ports extending into a body of the testing and sampling segment, the fluid port being coupled to a fluid mover to draw fluid from a sampling region into the sampling segment
Implementation Method 2
a first member being deployable to expand against a wellbore wall. The testing and sampling tool also includes a second member being deployable to expand against the wellbore wall
Data Source
AI summary
A downhole testing and sampling system includes a downhole tool, a conveyance system, and a testing and sampling tool forming a portion of the downhole tool. The testing and sampling tool including a first sampling modality and a second sampling modality. One or both of the first sampling modality or the second sampling modality may be deployed to collect a formation sample based, at least in part, on one or more formation properties.