Integrated NMR Logging and Fluid Sampling Tool
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Solution Overview
Problem
Current formation evaluation methods require multiple specialized tools for fluid sampling and NMR logging, necessitating multiple runs in hole operations or complex wireline tools, which is inefficient and operationally challenging.
Innovation Solution
An integrated NMR logging and fluid sampling system that combines a downhole logging tool with surface equipment and a computing subsystem, enabling simultaneous NMR measurements and fluid sampling using a single tool, with communication and telemetry systems for data transmission, and a modular design including an NMR module, probe, flow control, and sample collection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple specialized tools are used for fluid sampling and NMR logging, then measurement precision is improved, but device complexity increases and productivity decreases
Solution Approach 1:
The patent combines fluid sampling capabilities and NMR logging capabilities into a single integrated downhole tool. The tool includes both a fluid sampling module with seals and flow control mechanisms, and an NMR module with radio frequency coils and magnets, allowing both functions to be performed by one device rather than requiring separate specialized tools.
Solution Approach 2:
The downhole tool is designed as a multi-functional device that can perform both fluid sampling and NMR logging operations. The tool includes interchangeable or complementary modules that enable it to execute different evaluation functions, making a single tool universal for multiple formation evaluation tasks.
2Measurement precision
If multiple specialized tools are used for fluid sampling and NMR logging, then measurement precision is improved, but productivity decreases
Solution Approach 1:
The patent combines fluid sampling capabilities and NMR logging capabilities into a single integrated downhole tool. The tool includes both a fluid sampling module with seals and flow control mechanisms, and an NMR module with radio frequency coils and magnets, allowing both functions to be performed by one device rather than requiring separate specialized tools.
3Measurement precision
If multiple run in hole operations are performed, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The integrated tool allows fluid sampling and NMR logging to be performed continuously during a single run-in-hole operation. The tool can sample formation fluids and perform NMR measurements on the sampled fluids without requiring the tool to be retrieved and replaced, maintaining continuous evaluation operations and eliminating idle time between separate operations.
4Measurement precision
If a wireline tool has multiple sections and parts, then measurement precision is improved, but ease of operation worsens
Solution Approach 1:
The patent combines fluid sampling capabilities and NMR logging capabilities into a single integrated downhole tool. The tool includes both a fluid sampling module with seals and flow control mechanisms, and an NMR module with radio frequency coils and magnets, allowing both functions to be performed by one device rather than requiring separate specialized tools.
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 integrated system allows for efficient and concurrent NMR logging and fluid sampling operations, reducing the need for multiple tools and operations, enhancing data collection and analysis, and improving the accuracy of subsurface property detection and fluid characterization.
Implementation Method 1
nuclear magnetic resonance (NMR) logging. NMR logging, a subcategory of electromagnetic logging, measures the induced magnet moment of hydrogen nuclei (protons) contained within the fluid-filled pore space of a formation
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A subterranean characterization and fluid sampling device for analyzing a fluid from a subterranean formation includes a controller, a tool body, and a probing module. The tool body includes a fluid testing module configured to receive a sample of the fluid from the subterranean formation and a permanent magnet configured to induce a static magnetic field (B0). The probing module is coupled to the tool body and separate from the permanent magnet, and configured to withdraw the fluid from the formation and deliver the fluid to the testing module. The probing module comprises an antenna that generates a radio frequency magnetic field (B1) in response to a signal from the controller.