Remote Instrument Gateway for Satellite Oil Well Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional systems for monitoring and controlling remote oil well equipment, such as electrical submersible pumps, are inefficient due to limitations in bandwidth usage, lack of event-driven capabilities, and inability to leverage TCP/IP networks, particularly in global communication scenarios like satellite networks, and do not provide authentication or encryption services.
Innovation Solution
A global remote instrument control and reporting system utilizing a host communication gateway that interfaces with field devices across multiple communication infrastructures, enabling low-cost 'plug and play' functionality, supports various industrial protocols, and uses a communication gateway to simulate polling registers, allowing for efficient data communication through low Earth orbit satellites, with features like event-driven alarm reporting and demand command capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional Modbus poll/response network is used, then basic control functionality is provided, but bandwidth efficiency deteriorates and event-driven capabilities are lost
Solution Approach 1:
The system dynamically switches between periodic polling mode and event-driven mode based on operational conditions. During normal operation, event-driven mode reduces bandwidth usage by transmitting only when changes occur. During maintenance or diagnostic periods, polling mode ensures comprehensive data collection. This dynamic adaptation resolves the contradiction between bandwidth efficiency and functional completeness.
Solution Approach 2:
The gateway device changes operational parameters including polling intervals, data transmission formats, and communication protocols based on system state. When events occur (alarms, threshold breaches), the system transitions to immediate transmission mode with higher priority. This parameter adaptation allows the system to optimize bandwidth efficiency while maintaining necessary control capabilities.
2Adaptability or versatility
If TCP/IP network infrastructure is leveraged, then global communication capabilities are improved, but compatibility with legacy industrial protocols deteriorates
Solution Approach 1:
The gateway device serves as an intermediary between TCP/IP networks and legacy industrial protocols like Modbus. It receives data from field devices using traditional protocols, translates it into TCP/IP packets for satellite transmission, and converts incoming TCP/IP commands back into legacy protocol formats. This intermediary approach enables global communication capability while maintaining seamless compatibility with existing industrial equipment.
Solution Approach 2:
The gateway device performs multiple functions: protocol translation, data formatting, encryption, authentication, and event detection. This multi-functionality allows a single device to bridge different network infrastructures (satellite, terrestrial, wireless) while supporting both modern TCP/IP and legacy industrial protocols, thereby achieving universality without proportionally increasing complexity.
3Reliability
If authentication and encryption services are added, then data security is improved, but system complexity deteriorates
Solution Approach 1:
The gateway device implements self-service security management by automatically handling authentication credentials, encryption keys, and certificate validation. Security parameters are configured once and then managed autonomously, with automatic key rotation and credential renewal. This self-service approach provides robust data security while minimizing the operational complexity burden on users.
Data Source
AI summary
A remote instrument control and reporting system utilizes a host communication gateway based on hardware and software that interfaces with a field device, remote terminal unit, or control system that operates across multiple communications infrastructures to a common back end data delivery system. This design allows Modbus hosts or similar SCADA polled technologies, such as a field bus that utilizes various industrial protocols to control instruments at and acquire instrumentation data from physically isolated installations. In particular, this design is well suited for applications such as oil well electrical submersible pumps. The data is communicated through, for example, a low Earth orbit satellite into a host communications gateway that simulates within a host computer environment the same polling registers that the data was collected from in the remote locations.