Liquid-Gas Well Injection for Deeper Gas Lift Production
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Solution Overview
Problem
Conventional gas lift systems for oil and gas extraction are inefficient and resource-intensive, limiting the depth of gas injection and overall production efficiency.
Innovation Solution
Injecting a mixture of liquid and gas into a well during production, optimized by determining flow rates and compositional parameters based on well geometry, productivity, and surface production parameters, to increase production efficiency and reduce resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional gas lift systems are used for oil and gas extraction, then gas can be injected into the well, but the system is inefficient and resource-intensive, limiting the depth of gas injection and overall production efficiency
Solution Approach 1:
The patent introduces a liquid intermediary substance that is co-injected with gas into the wellbore. This liquid acts as a mediator to carry gas deeper into the formation than conventional gas lift systems can achieve alone, enabling enhanced oil recovery from deeper reservoirs while improving overall system efficiency and reducing resource consumption per unit of production
Solution Approach 2:
The patent changes the physical parameters of the injection system by introducing a two-phase (liquid and gas) injection system instead of single-phase gas injection. By optimizing the ratios, pressures, and flow rates of the liquid and gas phases, the system achieves deeper injection depth and improved production efficiency while reducing the total resources required compared to conventional gas lift
2Length of stationary object
If conventional gas lift systems are used, then gas injection can be performed, but the depth of gas injection is limited
Solution Approach 1:
The liquid intermediary enables gas to be transported deeper into the wellbore by utilizing the liquid's ability to carry gas bubbles under higher pressure conditions. This overcomes the conventional limitation where gas alone cannot reach sufficient depths, thereby extending the effective injection depth while maintaining or improving production efficiency
Solution Approach 2:
The patent employs a combined pneumatic (gas) and hydraulic (liquid) injection system. The hydraulic component provides the necessary pressure and medium to transport the pneumatic component (gas) to greater depths, effectively combining the advantages of both fluid systems to achieve deeper injection while maintaining production efficiency
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 approach can increase well production by 5% to 200% and decrease production fluid density, enhancing extraction efficiency while using fewer resources compared to conventional methods.
Implementation Method 1
injecting a liquid and gas mixture into a well to decrease the density of the production fluid
Data Source
AI summary
Processes and systems for injecting a liquid and gas mixture into a well are disclosed. The processes and systems include injecting a mixture of a liquid and a gas into a well in order to: increase production of a production fluid in the well, decrease the bottom hole pressure, decrease the density of the production fluid, or a combination thereof.