Straddle-Supported Mandrel Gas Injection for Hydrocarbon Production
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Solution Overview
Problem
Existing gas lift systems inject gas against the main flow in hydrocarbon production, leading to unnecessary pressure loss and inefficient mixing with produced liquids, lacking a solution that allows gas injection without opposing the production flow while ensuring homogeneous mixing.
Innovation Solution
A pneumatic lifting system with a straddle-supported mandrel and a chamber for gas outlet from the gas flow control valve, allowing gas to be injected into the chamber without opposing the hydrocarbon flow, using fluidic communication means for efficient mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If gas is injected against the main flow in the production pipe, then the mixing of gas with produced liquid is improved, but unnecessary pressure loss occurs and production liquid flow decreases
Solution Approach 1:
Instead of injecting gas against the main flow direction (conventional method), the invention inverts the approach by injecting gas in the same direction as the main flow. This is achieved through a tangential injection port that directs gas flow parallel to the production fluid flow, eliminating counter-flow pressure losses while maintaining effective mixing through the tangential injection geometry
2Device complexity
If gas is injected against the main flow, then gas injection control is simplified, but homogeneous mixing of gas with hydrocarbon produced is not achieved
Solution Approach 1:
The invention applies local quality by creating a specific tangential injection zone within the mandrel structure. The injection port is positioned and oriented to create a localized mixing region where gas is introduced tangentially to the main flow, ensuring homogeneous mixing at the injection point while maintaining simple overall control mechanism. The tangential geometry provides effective mixing without requiring complex multi-directional control systems
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 system prevents gas injection against the flow, ensuring efficient mixing and reducing pressure loss, thereby enhancing hydrocarbon production efficiency.
Implementation Method 1
the straddle comprises a means of fluidic communication adapted to feed gas inside the straddle
Implementation Method 2
the lift gas is not injected against the flow of the fluid inside the production pipe
Data Source
AI summary
This invention is related to a pneumatic lifting system for hydrocarbon production, comprising at least one mandrel (1) and at least one gas flow control valve (11), wherein the at least one mandrel (1) is connected to a production string (3), wherein the production string is positioned inside a well casing (2), wherein it comprises a straddle (10) supported on the production string and enveloping the mandrel, wherein in the region of the gas outlet (110) of the gas flow control valve (11) a chamber (105) is formed, wherein the straddle (10) comprises a means of fluidic communication (102) adapted to feed gas inside the straddle (10).