Wellhead Boom Auto-Positioning for Precise Plugging and Perforating
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Solution Overview
Problem
The existing plugging and perforating operations in oil and gas fields require manual operation, leading to inefficiency, potential misoperation, equipment damage, and increased safety risks due to the complexity of manual docking and lack of remote control and automatic positioning.
Innovation Solution
A wellhead automatic positioning method and system that determines the wellhead position and acquires standard and actual positioning parameters of a boom, allowing for automatic extension, retraction, lifting, lowering, and rotation to achieve precise alignment with the wellhead, utilizing sensors and controllers for automated control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation is used to operate the anti spray pipe string, then the operation can be performed with simple equipment, but the operation efficiency is low and the safety risk is high
Solution Approach 1:
The system uses positioning sensors and image identification devices to automatically detect wellhead positions and calculate positioning parameters without human intervention. The control module automatically generates control instructions based on calculated parameters, enabling the system to serve itself and eliminate manual operation requirements.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated control system that uses sensors, image processing, and electronic control modules. This substitution transforms the mechanical manual docking process into an automated system that calculates positioning parameters and generates control instructions electronically.
2Reliability
If manual operation is used for docking, then the equipment structure can be simple, but misoperation is easy to occur leading to equipment damage
Solution Approach 1:
The system employs positioning sensors and image identification devices that continuously monitor the wellhead position and boom parameters. The control module receives this feedback information, calculates positioning parameters, and generates real-time control instructions to ensure accurate and safe docking operations.
Solution Approach 2:
The control module acts as an intermediary between the positioning sensors and the boom actuation system. It processes positioning parameters, generates appropriate control instructions, and ensures that the boom moves to the correct position without direct manual intervention, thereby preventing misoperation.
3Ease of operation
If automatic positioning is implemented, then the operation efficiency and safety are improved, but the device complexity increases
Solution Approach 1:
The control module serves multiple functions: it receives positioning parameters from sensors, calculates the optimal boom position, generates control instructions, and monitors the docking process. This multi-functionality consolidates what would otherwise require separate systems into a single integrated unit, reducing overall complexity.
Solution Approach 2:
The system uses image identification devices to create a digital representation of the wellhead position and uses positioning sensors to copy the physical boom parameters. These digital copies are processed to generate control instructions, allowing the system to operate based on information replicas rather than direct physical manipulation.
4Measurement precision
If automatic positioning is used, then the positioning precision is improved, but the measurement and control difficulty increases
Solution Approach 1:
The control module serves as an intermediary that receives raw positioning data from multiple sensors, processes this information to calculate precise positioning parameters, and generates control instructions. This intermediary processing simplifies the measurement task by handling the complexity of multi-sensor data integration and parameter calculation.
Data Source
AI summary
A wellhead automatic positioning method and a system of a plugging and perforating operation machine are provided. The method includes: determining a wellhead position, and acquiring standard positioning parameters of a boom according to the wellhead position and a tool string length, where the positioning parameters include a standard extension length L of the boom, a standard lifting length J, and an included angle φ between a projection of the boom and a wellhead; acquiring actual positioning parameters of the boom, where the actual positioning parameters include an actual length L′ of the boom, an actual lifting length J′, and an initial angle φ′ between the projection of the boom and the wellhead; and according to the standard positioning parameters and the actual positioning parameters of the boom, making the boom to extend and retract, lift and lower, and rotate to complete automatic positioning of the wellhead.