Variable-Flow Plunger Mechanism for Oil and Gas Well Fall-Rate Control
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Solution Overview
Problem
Current plungers for oil and gas wells are limited to specific configurations, requiring multiple variations to find the appropriate fall rate, leading to inefficiency in fluid lifting operations.
Innovation Solution
A plunger with a variable flow mechanism that allows adjustment of fluid flow through the plunger to achieve a desired fall rate, featuring a mandrel, hollow body with radial ports, and a restrictive flow mechanism with adjustable plug positions to control fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple plunger configurations are used to find the appropriate fall rate, then the desired fall rate can be achieved, but the operational efficiency decreases and inventory complexity increases
Solution Approach 1:
The plunger incorporates an adjustable flow mechanism with a variable orifice size that can be dynamically changed in the field. This allows a single plunger design to adapt to different fall rate requirements by adjusting the orifice diameter, eliminating the need to stock multiple fixed-configuration plungers and improving operational efficiency.
Solution Approach 2:
The invention changes the physical parameter of flow area through an adjustable orifice mechanism. By varying the orifice diameter parameter, the plunger can achieve different fall rates without requiring multiple distinct plunger designs, thus resolving the contradiction between precision control and operational efficiency.
2Adaptability or versatility
If multiple plunger configurations are maintained in inventory, then various fall rate requirements can be met, but inventory complexity and costs increase
Solution Approach 1:
The plunger is designed with a universal adjustable flow mechanism that enables a single device to perform multiple fall rate functions. The adjustable orifice allows one plunger design to replace multiple fixed-configuration plungers, reducing inventory complexity while maintaining adaptability to different well conditions.
Solution Approach 2:
The dynamic adjustability of the orifice size transforms a static, single-function plunger into a dynamic, multi-function device. This allows the same physical plunger to adapt to various fall rate requirements by changing its flow characteristics, thereby eliminating the need for diverse plunger inventories.
3Ease of manufacture
If a fixed configuration plunger is used, then manufacturing is simpler, but the ability to match specific well conditions is limited
Solution Approach 1:
The flow control function is segmented from the main plunger body into a separate adjustable mechanism. This modular approach maintains relative manufacturing simplicity while adding adaptability, as the segmented flow control component can be independently adjusted to match specific well conditions without redesigning the entire plunger.
Data Source
AI summary
A plunger for use in an oil or gas well that includes a mandrel and a hollow body with radial directed ports disposed therein. The plunger also includes a variable flow mechanism that can be adjusted to achieve a desired fall rate for the plunger for a particular oil and gas operation. A method of lifting fluids from an oil and gas well using the plunger includes the step of employing an adjustable plunger to lift fluids from the oil and gas well wherein the adjustable plunger has a desired fall rate in the well.