Sectional Pumping Apparatus for Well Casing
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Solution Overview
Problem
Conventional well cleaning methods, such as the swab and airlift technique, are inefficient and costly due to limited control over flow velocities and continuous flow, leading to unsatisfactory results and increased sand/sediment production, especially in areas with low-yielding aquifers.
Innovation Solution
A sectional pumping apparatus with a swabbing tool and submersible pump system that maintains a specific distance during up and down motion within the well casing, providing efficient removal of sediment and water buildup before, during, and after chemical injection and mechanical development stages, utilizing a concentric configuration of discharge pipe, submersible pump, and swab tool for continuous flow and controlled velocities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the swab and airlift technique is used for well cleaning, then debris removal is achieved, but flow velocity control is poor and continuous flow is not provided
Solution Approach 1:
The patent employs a submersible pump system that maintains continuous operation throughout the well cleaning process, eliminating the intermittent nature of traditional swab and airlift methods. The pump continuously circulates water through the well screen and casing, ensuring uninterrupted flow velocity control and consistent cleaning action.
Solution Approach 2:
The invention replaces the mechanical swab tool with a submersible pump system that uses hydraulic circulation to achieve cleaning objectives. This substitution enables precise control over flow velocities and maintains continuous operation, overcoming the limitations of manual or mechanical swabbing methods.
2Productivity
If the swab and airlift technique is used, then some debris removal is achieved, but sand and sediment production increases
Solution Approach 1:
The submersible pump system replaces aggressive mechanical swabbing with controlled hydraulic circulation, reducing the generation of sand and sediment while maintaining effective debris removal. The pump's gentle water circulation avoids the violent agitation that causes excessive sediment production.
Solution Approach 2:
The invention changes the operational parameters from high-impact mechanical strokes to controlled flow velocities. By adjusting pump flow rates and water circulation patterns, the system achieves effective cleaning without generating excessive sand and sediment, thereby reducing harmful byproducts.
3Productivity
If deep submergence is required for airlifting, then debris can be removed, but the method becomes limited in applicability
Solution Approach 1:
The submersible pump system eliminates the need for deep submergence by using hydraulic circulation that can effectively clean debris at various depths. The pump's ability to create controlled water flow allows it to operate effectively without requiring the extensive submergence needed for traditional airlift methods.
Solution Approach 2:
The invention creates a universal cleaning system that can adapt to various well conditions and depths without requiring specialized deep submergence capabilities. The submersible pump can effectively clean debris across different aquifer yields and well structures, making the method highly versatile and applicable to a broader range of scenarios.
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 apparatus achieves improved well cleaning by maintaining constant flow velocities, increasing output to 350-750 gallons per minute, and reducing costs by minimizing physical limitations and submergence requirements, ensuring effective sediment and water removal across various well conditions.
Implementation Method 1
a submersible pump positioned within the pump housing
Implementation Method 2
The well drilling rig moves the present invention up and down within the well casing
Data Source
AI summary
A sectional pumping apparatus for well casing includes a discharge pipe, a submersible pump, a pump housing, a swab tool, and a central axis. The discharge pipe, the submersible pump, the pump housing, and the swab tool are concentrically positioned along the central axis. The discharge pipe includes a first tubular body and a flange connector. The flange connector is radially connected around the first tubular body. The submersible pump is hermetically attached to a pump end of the first tubular body. The submersible pump and the pump end are positioned within the pump housing as the first tubular body is hermetically attached to a top end of the pump housing through the flange connector. The swab tool is hermetically attached to a bottom end of the pump housing and is in fluid communication with the discharge pipe through the submersible pump.