Venturi Ejector Degasser for Mud Gas Separation
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Solution Overview
Problem
The presence of mud gases in drilling fluid interferes with accurate measurements during mud gas logging, leading to inconsistent and inaccurate results due to the need for manual, mechanical agitation methods for gas extraction, which are inefficient and prone to errors.
Innovation Solution
An apparatus comprising a degasser with a gas-liquid separator and a venturi ejector is introduced to efficiently separate mud gases from drilling fluid, including a separator inlet for receiving the drilling fluid, a first outlet for discharging mud gases, and a second outlet for discharging degassed drilling fluid, with a venturi ejector that moves the fluid to the separator, facilitating accurate gas-liquid separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual mechanical agitation methods are used to extract mud gases from drilling fluid, then gas extraction can be performed, but the measurements become inconsistent and inaccurate due to human error
Solution Approach 1:
The patent replaces manual mechanical agitation with a venturi ejector system that uses fluid dynamics (gas flow through a venturi tube) to automatically agitate and strip gases from the drilling fluid. This eliminates human error and provides consistent, repeatable gas extraction and measurement.
Solution Approach 2:
The system is designed to automatically extract and measure gases without requiring manual operation. The venturi ejector self-regulates the agitation process through controlled gas flow, and the apparatus continuously monitors gas composition, providing reliable consistent measurements without human intervention.
2Productivity
If mud gases are present in drilling fluid, then the drilling fluid can be circulated, but accurate measurements of drilling fluid properties are interfered with and inhibited
Solution Approach 1:
The patent extracts mud gases from the drilling fluid using a venturi ejector system that strips gases from the liquid phase. This separation allows the drilling fluid to be circulated while removing the interfering gases, enabling accurate measurement of drilling fluid properties without gas interference.
Solution Approach 2:
The system segments the drilling fluid into gas and liquid phases through the venturi ejector separation process. This allows independent handling and measurement of each phase, with gases being extracted for separate analysis and the degassed drilling fluid being measured for its properties without interference.
3Ease of operation
If manual devices are used for mud gas logging, then gas extraction can be performed, but the operation requires manual intervention which reduces efficiency and increases error
Solution Approach 1:
The apparatus is designed to operate automatically without manual intervention. The venturi ejector system self-regulates gas flow and fluid agitation, while integrated sensors and analyzers continuously monitor and record gas composition and drilling fluid properties, eliminating the need for manual operation and significantly improving efficiency.
Solution Approach 2:
The patent replaces manual mechanical agitation with an automated venturi ejector system driven by controlled gas flow. This automated system continuously performs gas extraction and measurement without human intervention, improving both efficiency and consistency of the mud gas logging operation.
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 solution enables precise separation and analysis of mud gases, improving the accuracy of drilling fluid measurements and reducing human error, thereby enhancing the reliability of reservoir property assessments and hazardous gas detection.
Implementation Method 1
The venturi ejector moves the drilling fluid containing the entrained mud gas from a drilling fluid source to the gas-liquid separator
Implementation Method 2
The gas-liquid separator includes a separator inlet to receive the drilling fluid containing the entrained mud gas, a first separator outlet to discharge the mud gas, and a second separator outlet to discharge degassed drilling fluid
Data Source
AI summary
Apparatus and methods for degassing and analyzing drilling fluid discharged from a wellbore at an oil and gas wellsite. The apparatus may be a drilling fluid analysis system having a gas analyzer, a fluid analyzer, and a degasser operable to release and separate mud gas entrained in the drilling fluid. The degasser may include a gas-liquid separator having a separator inlet configured to receive the drilling fluid containing the entrained mud gas, a first separator outlet for discharging the mud gas fluidly connected with the gas analyzer, and a second separator outlet for discharging degassed drilling fluid fluidly connected with the fluid analyzer.