Modular Downhole Tool Interchangeable Probe Modules
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Solution Overview
Problem
Traditional downhole measurement systems require multiple formation tester tools with different stabilizer diameters for various well diameters, leading to increased costs and operational inefficiencies due to the need for frequent tool replacements.
Innovation Solution
A modular downhole tool system with interchangeable probe modules, each having a unique configuration, that can be coupled to a work string and includes a piston mechanism for extending and retracting probes, allowing for adaptable measurement capabilities without the need for frequent tool changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple formation tester tools with different stabilizer diameters are used for various well diameters, then the tool can engage the formation wall for measurements, but the cost and operational complexity increase due to frequent tool replacements
Solution Approach 1:
The formation tester tool is divided into a body and interchangeable probe modules. Each probe module can be independently replaced to accommodate different well diameters, while the main tool body remains the same. This segmentation allows the system to adapt to various well sizes without replacing the entire tool assembly.
Solution Approach 2:
The tool body is designed with universal features that can accommodate multiple types of probe modules. The body includes a stabilizer and engagement mechanisms that work with different probe configurations, allowing a single tool body to perform multiple measurement functions across different well diameters.
2Reliability
If the formation tester tool is replaced for each well diameter, then the measurement capability is maintained, but the productivity and operational efficiency decrease
Solution Approach 1:
The probe modules are designed to be dynamically interchangeable during drilling operations. The quick-connect mechanism allows probes to be swapped without stopping the drilling process, maintaining measurement capability while significantly improving operational efficiency and productivity.
Solution Approach 2:
Multiple probe modules with different configurations are prepared in advance for different well diameter scenarios. When a change in well diameter is anticipated, the appropriate probe module is already ready for installation, eliminating downtime and maintaining continuous measurement capability.
3Length of moving object
If probes extend beyond the stabilizer diameter, then the probes can engage the formation wall, but the tool requires replacement when well diameter changes
Solution Approach 1:
The probe extension mechanism is segmented into the main tool body and interchangeable probe modules. Each probe module has a specific extension length tailored to different well diameters, allowing the system to maintain appropriate probe-to-formation contact while adapting to various well sizes.
Solution Approach 2:
The probe modules are designed with varying geometric parameters including extension length, diameter, and engagement angle to match different well diameter requirements. By changing the probe module, the system changes the physical parameters of the measurement component while keeping the tool body constant.
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 testing of subterranean formations across varying well diameters with a single tool system, reducing costs and improving operational efficiency by allowing probe configurations to be changed as needed without replacing the entire tool assembly.
Implementation Method 1
The resilient member is operatively coupled to the probe and is configured to store energy when the probe is projected from the downhole tool
Implementation Method 2
The actuator is fluidly coupled to the probe actuating chamber via a fluid passage and is configured to vary the pressure in the actuating chamber
Data Source
AI summary
A system for testing a subterranean formation penetrated by a well includes a downhole tool configured to be coupled to a work string that includes a tool body having a longitudinal bore for circulating a fluid and at least one aperture configured to receive at least one module. The system further includes a plurality of modules that are each configured to engage the at least one aperture and at least one cavity configured for receiving a probe, and a plurality of probes that each include at least one orifice configured for testing the formation, wherein a first of the plurality of probes has a first configuration and a second of the plurality of probes has a second configuration.