Selection of an Offshore Petroleum Production System by Evaluating an Environmental Impact Index

2014 ◽  
Author(s):  
Maiara Moreira Gonçalves ◽  
Celso Kazuyuki Morooka ◽  
Ivan Rizzo Guilherme
Keyword(s):  
Environmental Impacts ◽  
Production System ◽  
Oil And Gas ◽  
Phase Iii ◽  
Sensitivity Index ◽  
Petroleum Reservoir ◽  
Petroleum Production ◽  
Offshore Production ◽  
Selection Of ◽  
Offshore Petroleum

The development of an offshore petroleum production system corresponds to define a set of equipment to make possible oil and gas extraction from an underwater petroleum reservoir. To better comprehension of the process, definition of this production system can be divided into phases. Phase I corresponds to the selection of number of wells and type of the well. Then, following the previous work (Franco, 2003), in the Phase II, the layout arrangement of wells and the set of the stationary Floating Production Unit (FPU) are selected. And, in the Phase III, storage and offloading alternatives for the produced oil and gas are selected. The present paper aims to identify environmental impacts associated with the each component of an offshore system for oil and gas production, and quantify each of them through indexes. It is expected to support the decision makers to select the best fitted system for a given offshore petroleum field. The increasing needs of petroleum to fulfill the energy matrix demanded in Brazil, the growing concern of the society for keeping the environment clean and the inclusion of an index related to the environment besides the technical and technological indexes usually taken makes it an important contribution to improve the process for selection and decision about the offshore production system. Particularly, it will be fundamental in the adverse condition of the Pre-salt scenario of petroleum production, in ultra-deep water depth and oil and gas with more aggressive contaminants to the system. The proposed methodology follows a similar procedure for the assessment of environmental impacts through the use of environmental sensitivity index (ESI) and the use of impact matrix (NOOA, 1997; Patin, 1999; Mariano and La Rovere, 2006). For the estimation of environmental impacts, it was defined the ESI of the area to be developed, and it was constructed an impact matrix based on the activities involved in the installation of platform, operational phase and decommissioning of a FPU and the elements from environment. Therefore, this systematic and structured approach allowed incorporating to the process of selection of the offshore production system for an oil and gas field the selection of alternative which combines the best technical and technological characteristics with better aspects from the environment.

Evaluation of Alternatives for Offshore Petroleum Production System in Deep and Ultradeep Water Depth

2011 ◽  
Author(s):  
Celso K. Morooka ◽  
Maria Deolinda B. M. de Carvalho
Keyword(s):  
Water Depth ◽  
Deep Water ◽  
Production System ◽  
Gas Production ◽  
Petroleum Reservoir ◽  
Petroleum Production ◽  
Well Completion ◽  
Production Type ◽  
Field Production ◽  
Offshore Petroleum

Different equipments combined compose an offshore petroleum production system. Several development alternatives are available for a given offshore petroleum field. The selection of the most suitable system for a given scenario depends on field development characteristics and strategies such as its geographical location, water depth, environmental conditions and knowledge about similar systems already selected and in use for oil and gas production and available infrastructure in around. For the purpose of field production system design a database with types of production platforms, mooring systems, subsea equipments, reservoir main characteristics, type of wells and lifting processes is fundamental. Today, offshore petroleum reservoir production is more and more complex due to several variables involved and requirement needed to meet deep and ultra deep water depth, pre-salt petroleum with aggressive fluid characteristics, fields in remote areas and other environmental issues. Large fields in deep and ultra deep water are particularly challenging due to little availability of suitable platform types, among known concepts such as floating, production, storage and offloading unit (FPSO), semisubmersible, spar and tension leg platform (TLP). In the present paper, a database for worldwide offshore petroleum systems in use has been elaborated by searching data available in the literature. The database is organized for more than three hundred platforms distributed on more than four hundred different offshore oil fields. To serve as a basis for the conceptual design of a field production system, this database contains information such as type of the platform, field location, water depth, days for the first production, type of well, completion, mooring system, riser and offloading system. This information is structured for different water depth and environmental condition, for each field. From this database, analysis has been conducted for distribution of each type of platform by worldwide region, distribution of each type of platform by the offshore field by region, among others analysis. Concept of Utility Functions are applied to represent technological trends and to be helpful in the process. Among the results, a preference for FPSOs and semisubmersible was observed in Brazil offshore, semisubmersible, TLPs and Spars in Gulf of Mexico. In Europe, particularly the North Sea, FPSO, semisubmersible, and few TLPs have been found. In West Africa, most of the field production is based on FPSOs, although some semisubmersible and TLP could be observed. Similar analyses were conducted in other regions. Results and discussions show preferences regarding technology selected by each region, region historical data, and growth of water depth in different fields.

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.

A Model-Based System Metaheuristic Engineering MBSME Approach in the Conceptual Selection of Offshore Production Units

2021 ◽  
Author(s):  
Leandro Pereira Basilio ◽  
Priscilla Badega Machado ◽  
Débora Calaza de Sousa ◽  
Rafael Vinicius de Castro ◽  
Diego Russo Juliano ◽  
...  
Keyword(s):  
Systems Engineering ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Field Development ◽  
Model Based ◽  
Offshore Production ◽  
Tradespace Exploration ◽  
Offshore Field ◽  
Selection Of

Abstract The objective of this paper is to present and discuss the philosophy behind the integration of "Model-Based Systems Engineering" (MBSE) with metaheuristic algorithms, referred to as "Model-Based Systems Metaheuristic Engineering" (MBSME), which has demonstrated high potential of techno-economic optimization of large capital projects in oil and gas industry, notably in the automatic and integrated conceptual design and selection of offshore systems architectures. Virtual modeling has always been an important part of systems engineering to support functional, performance and other engineering analysis. The so-called MBSME allows the simulation of several specific System-of-Systems physically addressed in offshore field development, bringing all the benefits of the traditional MBSE approach, and set a stochastic characteristic in the analysis, allowing the project team to focus on a Model-Centric approach, as well as to quickly understand the influence of several combined project strategies and application of different technologies, communicated through a Tradespace exploration map. Due to the characteristics associated with and the countless number of variables of the multidimensional problem addressed in an offshore field development, the integration of "Meta-Heuristic" algorithms with "Model-Based Systems Engineering" has demonstrated a remarkable efficiency and powerful applicability in the search for optimized design solutions in oil and gas industry, especially considering the processes of generation of conceptual alternatives of offshore production systems. This method leads to a reduction of more than 2/3 of the average time currently observed, with an increase in the number of conceptual alternatives evaluated in the order of tens to an order of thousands of options, in an automatic and integrated approach. Although the digital MBSME already developed addresses the combination of all technical disciplines associated with a complete offshore field development, the current work emphasizes the latest R&D achievements, addressing the automatic design and specification of Topside Facilities architecture, combined with the automatic selection of fitting for purpose Production Unit, based on internal requirements, such as the required capacity to support total weight and footprint imposed by the topside facilities’ modules, as well as external requirements, like water depth, surface metocean, type of well completion and oil storage requirements. An example of the MBSME application is presented, demonstrating a three-dimensional Tradespace exploration, relating Net Present Value (NPV), Capital Expenditure (CAPEX) and Breakeven Oil Price, through the application of a computational package in a hypothetical project, reflecting the design conditions of an offshore development in the Brazilian Pre-Salt region. The paper communicates an efficient method to increase the scope and accuracy of conceptual analyses, leading to the identification of the most favorable techno-economic conditions to the particularities of each project, supporting significant increases of return on investments.

The environmental impacts from the production of oil and gas resources

2016 ◽  
Vol 42 (1) ◽  
pp. 266-270
Author(s):  
A. Kasaeva ◽  
◽  
Z. Bіrіmzhanova ◽  
A. Rysmagambetova ◽  
◽  
...  
Keyword(s):  
Environmental Impacts ◽  
Oil And Gas ◽  
Oil And Gas Resources
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