Selection of Power From Shore for offshore Oil and Gas developments

2014 ◽  
Author(s):  
Edouard Thibaut ◽  
Bruno Leforggeais
Keyword(s):  
Oil And Gas ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Selection Of

Re-Evaluation of Tag Safety Critical Status in an FPSO: A Case Study for Recognizing Inconsistencies

2015 ◽  
Author(s):  
Sina Zahirian ◽  
R. M. Chandima Ratnayake
Keyword(s):  
Oil And Gas ◽  
Third Party ◽  
Safety Critical ◽  
Offshore Production ◽  
Correct Assignment ◽  
Maintenance Activities ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Selection Of

Assigning correct ‘safety critical’ (SC) status for tags in offshore production and/or in a process facility is vital for an asset owner. It minimizes not only health, safety & environmental (HSE) challenges but also the wastage in terms of cost, time and effort of maintenance activities. Correct assignment of the SC status for a tag obviates the selection of a tag which does not deserve safety critical status and vice versa. A case study has been carried out to perform a re-evaluation and audit of the safety critical status of the tags which have already been assigned by two engineering contractors (ECs) in a floating production storage and offloading (FPSO) facility designed for offshore oil and gas (O&G) industry. However, the asset owner has discovered a gap between the results of aforementioned SC status assignments which have been carried out by the initial ECs. Hence, the results of initial two SC status assignments have been handed over to a third party engineering contractor for the purpose of re-evaluation and verification. This manuscript maps the work process attached to the reevaluation and verification. Finally, it presents the reasons discovered for the inconsistencies that caused the mismatch in the initial tag SC status assignments.

Selection and Sizing of Velocity-Actuated Subsurface Safety Valves

1980 ◽  
Vol 102 (2) ◽  
pp. 82-91
Author(s):  
H. D. Beggs ◽  
J. P. Brill ◽  
E. A. Proan˜o ◽  
C. E. Roman-Lazo
Keyword(s):  
Pressure Drop ◽  
Gas Flow ◽  
Oil And Gas ◽  
Design Criteria ◽  
Gas Wells ◽  
Flow Rates ◽  
Oil And Gas Wells ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Selection Of

Subsurface safety valves (SSSVs) are installed in offshore oil and gas wells to shut in the wells in case of pressure loss at the wellhead. The selection of these SSSVs requires prediction of the oil and gas flow rates at which the valve will close. A study was performed to improve the design criteria used in the selection. Improved correlations were developed to predict pressure drop across a SSSV as a function of flow rates, and the pressure drop at which a SSSV will close.

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