Wireless Gas Lift Valve Control During Telemetry Loss
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Solution Overview
Problem
Current surface-controlled gas lift systems require physical communication conduits to the surface, are unpredictable, and cannot be adjusted without pulling the completion, limiting their optimization and production efficiency.
Innovation Solution
A wireless communication system is used to control downhole gas lift valves, allowing autonomous operation based on wellbore conditions, enabling semi-autonomous decision-making and parameter adjustment from the surface, eliminating the need for mechanical or electrical conduits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical communication conduits are used to control gas lift valves from surface, then continuous communication with surface is achieved, but device complexity and loss of energy increase
Solution Approach 1:
The patent replaces mechanical/electrical communication conduits with wireless communication technology. The downhole valve assembly includes a wireless transceiver that communicates with surface equipment through electromagnetic waves, eliminating the need for physical cables or conduits while maintaining bidirectional communication capability for control and monitoring.
2Adaptability or versatility
If conventional gas lift systems are used, then simple structure is maintained, but adaptability and productivity are limited
Solution Approach 1:
The patent implements dynamic control capabilities where the downhole valve assembly can adjust its operation based on real-time well conditions received through wireless communication. The system can dynamically modify valve positioning, opening pressures, and flow rates to optimize gas lift performance across varying production stages and reservoir conditions.
Solution Approach 2:
The system incorporates feedback mechanisms where sensors monitor downhole conditions (pressure, temperature, flow rates) and transmit this data wirelessly to the surface. The surface control system uses this feedback information to automatically adjust valve operations and system parameters, creating a closed-loop control system that continuously optimizes production efficiency.
3Productivity
If surface-controlled gas lift systems are used, then production efficiency can be optimized, but device complexity and loss of energy increase
Solution Approach 1:
The downhole valve assembly incorporates autonomous operation capabilities where the system can make its own control decisions based on pre-programmed logic and real-time sensor data without requiring constant energy-intensive wireless communication. The valve can operate autonomously in response to downhole conditions, reducing the energy required for surface control while maintaining optimization benefits.
Data Source
AI summary
A well system having a wellbore that intersects a subterranean formation, a valve station in the wellbore, and a primary controller on surface that communicates with the valve station using wireless telemetry. The valve station includes a valve member that controls a flow of fluid in the wellbore, an actuator for operating the valve member, and a valve controller that provides command signals to the actuator for positioning the valve member. The primary controller sends command signals that are receivable when the telemetry is operational. The valve controller is programmed to control operation of the valve actuator and valve member when telemetry is suspended and so that the valve station operates autonomously when out of signal communication with the primary controller and until signal communication is reestablished.