Powered Wellbore Bailer Motor-Driven Pump Debris Removal
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Solution Overview
Problem
Conventional bailer tools face challenges in efficiently removing debris from well tubing and casing, and in accurately depositing materials like cement in wellbores, often requiring manual jerking of the wire to displace materials, which can cause stress and inefficiency.
Innovation Solution
The implementation of a wellbore bailer system with a downhole motor coupled to a bailer tool that uses a rotary motor to drive a pump or power screw, allowing for controlled rotation and operation at specified depths, enabling efficient debris removal and material deposition without the need for manual jerking, using check valves and frangible plates for sealing and release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional bailer tools use manual wire jerking to displace materials, then the tool structure remains simple, but operational stress increases and efficiency decreases
Solution Approach 1:
The patent replaces the manual mechanical wire jerking system with an electrically powered downhole motor and pump system. The motor drives a pump that generates hydraulic pressure to automatically displace debris and materials through the tubing, eliminating the need for manual wire manipulation and reducing operational stress on the system.
Solution Approach 2:
The bailer tool becomes self-operating through the integrated motor and pump system that automatically generates the force needed to move materials. The system serves itself by using its own power source to create the displacement action, rather than requiring external manual intervention through wire jerking.
2Reliability
If conventional bailer tools lack automated control, then the device complexity remains low, but operational precision and reliability decrease
Solution Approach 1:
The downhole motor serves multiple functions: it drives the pump for material displacement, provides controlled operation at specified depths, and enables both debris removal and material deposition operations. This multi-functionality improves reliability by ensuring consistent performance across various well configurations and operations.
Solution Approach 2:
The system incorporates controlled operation capabilities where the motor can be activated at specified depths and for specified durations based on operational parameters. This feedback-controlled approach ensures precise and reliable material displacement and deposition, maintaining consistent performance across different well conditions.
3Loss of time
If manual wire manipulation is used to operate the bailer, then the ease of operation is maintained, but the loss of time and operational efficiency increase
Solution Approach 1:
The electrically powered pump system replaces the time-consuming manual wire jerking process. The motor-driven pump automatically generates hydraulic pressure to displace materials efficiently, significantly reducing the time required for debris removal and material deposition operations compared to manual methods.
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 efficient and controlled removal of debris and deposition of materials, reducing operational stress and improving the reliability of bailer tools by automating the process and ensuring consistent performance across various well configurations.
Implementation Method 1
a downhole motor (122) coupled to a bailer tool (124)... uses a rotary motor to drive a pump or power screw
Implementation Method 2
The pump is configured to pump fluid into the cylinder housing
Implementation Method 3
The valve closure is changeable between sealing against flow through the open end and allowing flow through the open end
Implementation Method 4
The frangible plate is configured to break in response to pressure from the piston moving the material out of the cylinder housing
Implementation Method 5
The jarring breaks the shear pins and drives the plunger up through the rupture disk, breaking the rupture disk. The material to be deposited flows from the cylinder into the wellbore
Data Source
AI summary
A wellbore bailer has a rotary motor coupling, a cylinder having an open end, and a pump in the cylinder coupled to the rotary motor coupling and configured to pump fluid when rotated via the coupling. A closure of the bailer is changeable between sealing and allowing flow through the open end.