Downhole Perforation System with Telemetry Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing perforating systems in subterranean wellbores lack the capability to verify detonation location, leading to potential misfires and safety hazards, as they operate without downhole confirmation.
Innovation Solution
The implementation of a downhole perforating system equipped with a digital slickline unit and telemetry module, allowing for real-time data transmission and autonomous operation, which includes a control unit that measures well parameters and sends actuation signals to perforating guns only when specific conditions are met, ensuring accurate and safe detonation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If perforating guns are actuated from the surface without downhole verification, then the operation is simpler and faster, but the reliability and safety are compromised due to inability to verify detonation location
Solution Approach 1:
The patent implements a feedback mechanism where downhole sensors detect the actual detonation location and transmit this information back to the surface. The system compares the detected location with the intended target location and provides feedback to determine whether to re-fire the perforating guns if a misfire is detected, thereby ensuring reliable detonation verification.
Solution Approach 2:
The patent replaces the traditional mechanical surface-only actuation system with an integrated system that incorporates downhole electronic sensors and telemetry. This substitution enables automatic detection and verification of detonation events, transforming the system from purely mechanical to an electro-mechanical integrated system that provides real-time feedback.
2Ease of operation
If downhole sensors and telemetry are added to verify detonation, then safety and accuracy improve, but the device complexity and cost increase
Solution Approach 1:
The downhole system performs self-verification by automatically detecting detonation events using integrated sensors and comparing them against target parameters. The system autonomously determines whether a misfire occurred and generates appropriate feedback signals, eliminating the need for complex manual verification procedures and reducing operational complexity despite added hardware.
3Manufacturing precision
If the system waits for condition verification before actuation, then precision and safety improve, but the productivity and speed of operation decrease
Solution Approach 1:
The system performs preliminary verification of downhole conditions (such as casing collar detection and depth confirmation) before actuating the perforating guns. By pre-verifying that all conditions are met before detonation, the system ensures precise perforation at the correct location without requiring post-detonation corrections or re-operations, thereby maintaining productivity.
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 solution enables precise and safe perforation by verifying the correct positioning and conditions before actuating the perforating guns, reducing the risk of misfires and enhancing operational safety and efficiency.
Implementation Method 1
These perforations may be created by detonating a series of shaped charges that may be disposed within the casing string and may be positioned adjacent to the formation
Implementation Method 2
the shaped charges may be detonated, thereby creating the desired perforations
Data Source
AI summary
Systems and methods are provided for transmitting information to and from a downhole tool for detonation at a specified location. Perforating systems and methods may use a digital slickline unit and a telemetry module to autonomously operate within a wellbore. A well system may comprise: a downhole perforating system comprising: at least one perforating gun; a setting tool; and a control unit coupled to the at least one perforating gun and the setting tool in a tool string for conveyance downhole, wherein the control unit comprises a battery pack, electronics, at least one sensor, wherein the electronics are operable to send one or more actuation signals to the at least one perforating gun and the setting tool.