Automated Sucker Rod Spacing Device for Pump Fillage
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Solution Overview
Problem
Current manual solutions for adjusting the depth of sucker rod strings in oil wells are inefficient, leading to issues like tagging, which causes damage and reduced production due to unpredictable changes in rod length and operating conditions, and the inability to automatically monitor and adjust for optimal pump fillage and gas lock prevention.
Innovation Solution
An automated device connected to the sucker rod string that uses sensors and a control system to monitor and adjust the depth of the sucker rod string, employing mechanical methods like hydraulics or air pistons to raise or lower the string, and a computer system to make adjustments based on real-time data to prevent tagging and gas lock, ensuring maximum pump fillage and reducing wear on equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual adjustment methods are used for sucker rod depth, then device complexity is reduced, but productivity decreases and measurement precision is insufficient
Solution Approach 1:
The system automatically monitors rod depth, detects tagging conditions, and adjusts rod position without human intervention. The computer system processes sensor data and controls the adjustment mechanism autonomously, eliminating the need for manual monitoring and adjustment operations.
Solution Approach 2:
Sensors continuously monitor the depth and position of the sucker rod string, providing real-time feedback to the computer system. The system uses this feedback to detect tagging conditions and automatically adjusts rod depth to maintain optimal positioning, creating a closed-loop control system.
2Measurement precision
If automated monitoring and adjustment systems are implemented, then measurement precision and reliability improve, but device complexity increases
Solution Approach 1:
Manual mechanical adjustment operations are replaced with an automated system comprising sensors, computer processing, and mechanical adjustment mechanisms. The computer system processes sensor signals and automatically controls the adjustment mechanism, replacing human operators with automated electronic and mechanical systems.
Solution Approach 2:
The computer system acts as an intermediary between the sensors that monitor rod position and the mechanical adjustment mechanism. It processes sensor data, determines when tagging conditions exist, and controls the adjustment mechanism to maintain optimal rod depth, coordinating multiple system components.
3Object-affected harmful factors
If sucker rod string depth is not adjusted, then device complexity remains low, but harmful factors increase due to tagging and gas lock
Solution Approach 1:
The system proactively detects conditions that would lead to tagging or gas lock and adjusts rod depth in advance to prevent these harmful effects. By continuously monitoring rod position and predicting potential problems, the system takes preventive action before damage occurs.
Solution Approach 2:
The system uses the harmful effect of tagging as a detection criterion - when tagging conditions are detected through sensor data analysis, the system automatically adjusts rod depth to eliminate the tagging. The potential harm becomes the trigger for corrective action, converting a damaging condition into a control signal.
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
The automated system effectively prevents tagging and gas lock, maintaining optimal pump fillage and reducing wear on sucker rods and tubing, allowing for continuous monitoring and adjustment without human intervention, thereby enhancing production efficiency and extending equipment lifespan.
Implementation Method 1
employing mechanical methods like hydraulics or air pistons to raise or lower the string
Implementation Method 2
employing mechanical methods like hydraulics or air pistons to raise or lower the string
Implementation Method 3
a screw set within the housing and connected to a sucker rod string via a polished rod
Implementation Method 4
a nut which is in threaded engagement with the screw; a means to transmit a rotation force to the nut
Data Source
AI summary
An automated sucker rod spacing device comprising a housing, a screw set within the housing and connected to a sucker rod string via a polished rod, a nut which is in threaded engagement with the screw, a means to transmit a rotation force to the nut, wherein the rotation of the nut can lower or raise the screw and thus lower or raise the sucker rod string. The device can be used to stop tagging, ensure full pump fillage, and avoid gas lock.