Legacy Field Upgrades - Production Control System Lessons Learnt

2021 ◽  
Author(s):  
Sigurd Moe ◽  
Dennis Pham
Keyword(s):  
Control System ◽  
Production Control ◽  
Production Control System ◽  
Lessons Learnt ◽  
Operational Phase

Abstract This paper describes examples of functionality and equipment limitations encountered during the subsea field operational phase, and practical solutions to eliminate the limitations. It addresses changes and upgrades required to hydraulic, chemical and electric infrastructure. Modifications and upgrades, such as retrofit sensors, retrofit electric actuators, bypass connections and digital soutions are described. How a holistic obsolescence strategy can modernize the subsea functionality and let different generation systems coexist is further described.

Pompano Subsea Development: Production Control System and Umbilicals

1996 ◽  
Author(s):  
R.M. Pricharct ◽  
K.P. DeJohn ◽  
P. Farrell ◽  
C. Baggs ◽  
D. Harris
Keyword(s):  
Control System ◽  
Production Control ◽  
Production Control System

Systematic Approach to the Assessment of Production Control Functioning at Hazardous Production Facilities of Oil and Gas Industry

2021 ◽  
pp. 70-75
Author(s):  
R.I. Fatkhutdinov ◽  
◽  
Keyword(s):  
Control System ◽  
Systematic Approach ◽  
Oil And Gas ◽  
Production Control ◽  
Point Of View ◽  
Industrial Safety ◽  
Production Control System ◽  
System Functioning ◽  
Hazardous Production ◽  
Integral Indicator

One of the main causes of accidents at hazardous production facilities of oil and gas production is the inefficient work of production control over compliance with industrial safety requirements. At present there are no criteria for its assessment in the Russian legislation. It is established in the study that that production control in the industrial safety management system performs the role of «control» in accordance with the Shewhart-Deming cycle PDCA, and its main function is to work with nonconformities. In connection with the above, it is proposed to approach production control not only from the point of view of the process, but also from the system approach. To assess the system functioning, the criteria of «effectiveness», «efficiency», «integral indicator» are considered. It is established that from the point of view of proactivity in achieving the goals of production control, the most preferable is the assessment of the integral indicator of the production control system functioning. The considered existing and possible approaches to the assessment of the production control system and the statistical processing of the results of the expert assessment of nineteen parameters confirmed the need for a systematic approach. Based on this, the hypothesis of the production control system functioning is proposed and statistically substantiated, and four main parameters for calculating the integral indicator of the production control system functioning are considered. The built mathematical model based on the fuzzy logic clearly demonstrates the dependence of the integral indicator of the production control system functioning on the considered input parameters. The proposed proactive approach to the assessment of the production control system through nonconformity management is universal and applicable to the «control» function of any control system. It can also be used in the work of Rostechnadzor and be an incentive for enterprises to improve the quality, efficiency, and effectiveness of the production control system.

scholarly journals Dynamic Analysis and Optimization of a Production Control System under Supply and Demand Uncertainties

2016 ◽  
Vol 2016 ◽  
pp. 1-17 ◽  
Author(s):  
Qiankai Qing ◽  
Wen Shi ◽  
Hai Li ◽  
Yuan Shao
Keyword(s):  
Control System ◽  
Performance Indicators ◽  
Demand Uncertainty ◽  
Production Control ◽  
Optimal Parameter ◽  
Dynamic Performance ◽  
Random Demand ◽  
Start Time ◽  
Supply Disruption ◽  
Production Control System

This study investigates the dynamic performance and optimization of a typical discrete production control system under supply disruption and demand uncertainty. Two different types of uncertain demands, disrupted demand with a step change in demand and random demand, are considered. We find that, under demand disruption, the system’s dynamic performance indicators (the peak values of the order rate, production completion rate, and inventory) increase with the duration of supply disruption; however, they increase and decrease sequentially with the supply disruption start time. This change tendency differs from the finding that each kind of peak is independent of the supply disruption start time under no demand disruption. We also find that, under random demand, the dynamic performance indicators (Bullwhip and variance amplification of inventory relative to demand) increase with the disruption duration, but they have a decreasing tendency as demand variance increases. In order to design an adaptive system, we propose a genetic algorithm that minimizes the respective objective function on the system’s dynamic performance indicators via choosing appropriate system parameters. It is shown that the optimal parameter choices relate closely to the supply disruption start time and duration under disrupted demand and to the supply disruption duration under random demand.

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