Downhole Tension Sensor Integration for Perforation Safety
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Solution Overview
Problem
Existing downhole measurement systems, particularly those used in wellbore operations, face challenges in accurately measuring tension on conveyance lines due to the risk of damaging telemetry equipment during violent operations like perforation, leading to the omission of tension measurement sensors and limited functionality.
Innovation Solution
Integration of a tension sensor and data communication equipment into a single robust unit, designed to withstand downhole conditions, which can be used with existing tool strings and casing collar locators, eliminating the need for separate telemetry equipment and protecting against signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate telemetry equipment is used for tension measurement, then measurement precision is improved, but device complexity and vulnerability to damage increase
Solution Approach 1:
The patent combines the tension sensor and data communication equipment into a single integrated downhole device. This merging eliminates the need for separate telemetry equipment while maintaining measurement precision. The integrated design reduces the number of components that could fail during violent operations, directly resolving the contradiction between measurement precision and device complexity.
2Loss of information
If telemetry equipment is included in tool strings, then information transmission is improved, but reliability decreases due to damage risk from violent operations
Solution Approach 1:
By integrating the tension sensor with data communication equipment into a single robust unit, the patent reduces the overall equipment footprint and eliminates potential failure points from separate components. This integrated approach maintains information transmission capability while improving reliability during violent perforation operations.
Solution Approach 2:
The patent designs the integrated downhole device with robust construction that can withstand violent disturbances before they occur. The unified structure inherently provides better protection against damage from perforation operations compared to separate telemetry equipment, addressing the reliability concern beforehand.
3Measurement precision
If multiple separate sensors and telemetry equipment are used, then measurement functionality is improved, but ease of operation and system robustness decrease
Solution Approach 1:
The integration of tension sensing and data communication functions into a single downhole device simplifies the overall system architecture. This eliminates the need to manage multiple separate sensors and telemetry equipment, making the system easier to operate while maintaining full measurement functionality.
Solution Approach 2:
The integrated downhole device performs multiple functions including tension measurement and data communication within a single unit. This multi-functionality eliminates the need for multiple specialized components, thereby improving ease of operation while preserving comprehensive measurement capabilities.
Data Source
AI summary
A system is disclosed that includes a tool string including one or more perforating guns, a conveyance operably coupled to the tool string at a socket coupling location and configured to help convey the tool string downhole, a load-measuring device arranged on the tool string and including one or more tension sensors configured to measure tensile load on the conveyance, the load-measuring device further including communication equipment capable of transmitting one or more uphole signals, wherein the one or more uphole signals includes measurement signals corresponding to the tensile load, and a computer system locatable at or near the surface location and communicably coupled to the tool string, the computer system being configured to receive and process the one or more uphole signals and further configured to transmit one or more downhole signals to the tool string to operate the one or more perforating guns.