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Collaborating Authors
Results
Abstract Slightly more than 10 years after its discovery, Lula Field has the world's largest oil production in ultra-deep waters. This impressive goal was achieved through a robust reservoir-oriented strategy to minimize risks and maximize value during the fast-track development of this giant field. The strategy used in the development of the Lula Field, which aims at attaining a recoverable oil volume of billions of barrels, is described in this work. The methodology applied encompasses four steps. The first step consists on performing an adequate data acquisition during exploratory and early development phases. The acquired data guided the second step, which is the implementation of pilot projects to gather important dynamic information and to anticipate profits. The third step is the deployment of definitive production systems based on robust drainage strategies, built under different reservoir scenarios. The fourth step is production management through the application of innovative technologies in ultra-deep offshore environment, such as water alternating gas (WAG) wells, 4D seismic monitoring, and massive use of intelligent completion. Seismic data and special processing enabled the identification and characterization of the reservoirs located under a thick saline formation. The drilling of reservoir data acquisition wells along with extended well tests was important to appraise critical reservoir regions and to verify communication between different reservoir zones. Extensive fluid sampling and advanced thermodynamic modeling allowed the understanding of Lula Fields complex fluids. Two pilot projects were positioned over 20 km apart from each other on this extensive reservoir, allowing interference tests between the pilots and new drilled wells. Afterwards, eight following production systems were conceived using previously acquired data and flexibilities to accomplish modifications into the project based on new information acquired during the drilling campaign. An example of this flexibility strategy was the empowerment of the reservoir team to propose a specific well drilling sequence and schedule. This allowed the use of newly obtained information from one well to the next, even in a fast track development scenario, in order to optimize productivity and sweep of the reservoir. At last, the reservoir management has already presented promising results related to the control of injected and produced fluids in FPSOs with longer production history. The steps herein presented allowed the successful development of Lula Field, which has nowadays seven FPSOs producing around 800 kbpd. The most recent FPSO started operation in May 2017 and is still ramping up. Together with the remaining FPSOs to be deployed, it is expected that Lula Field will reach a peak of production of around 1 million bpd. Such production levels were never achieved before in a single ultra-deep water field.
- South America > Brazil > Rio de Janeiro > South Atlantic Ocean (1.00)
- North America > United States > Louisiana (1.00)
- Geophysics > Time-Lapse Surveying > Time-Lapse Seismic Surveying (1.00)
- Geophysics > Seismic Surveying (1.00)
- Geophysics > Borehole Geophysics (1.00)
- South America > Brazil > Rio de Janeiro > South Atlantic Ocean > Santos Basin > Block BM-S-11 (0.99)
- South America > Brazil > Rio de Janeiro > South Atlantic Ocean > Santos Basin > Barra Velha Formation (0.99)
- South America > Brazil > Brazil > South Atlantic Ocean > Santos Basin (0.99)
- (2 more...)
- Well Drilling > Drilling Operations (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)
- Reservoir Description and Dynamics > Improved and Enhanced Recovery (1.00)
- (2 more...)
Lula Alto - Strategy and Execution of a Megaproject in Deep Water Santos Basin Pre-Salt
de Abreu Campos, Nathalia (PETROBRAS) | da Silva Faria, Marcílio José (PETROBRAS) | de Moraes Cruz, Rafael Oscar (PETROBRAS) | de Almeida, Amaya Caldas Villar (PETROBRAS) | Rebeschini, Edson José (PETROBRAS) | Vaz, Henrique Paes (PETROBRAS) | João, Leonardo Villain (PETROBRAS) | Rosa, Marcelo Becher (PETROBRAS) | da Fonseca, Tiago Cardoso (PETROBRAS)
Abstract This article presents the successful history of Lula Alto Project, one of the development modules of Lula giant field, located in Santos Basin pre-salt at southeast Brazil at a 2,120 meters water depth. The project is currently producing at its maximum oil capacity, considering operational performance, achieved only 9 months from first oil. This is the fifth module of Lula field, which modular development allowed drainage plan and subsea layout optimization. The article will present the reservoir conceptual model, drainage plan optimization, information acquisition strategy and modular development insights; the subsea layout optimization that led to a minimum flowline length per well; twin FPSO construction strategy; project development and fast ramp-up and the challenges faced during the first year of production. It will also address integrity and maintenance management, aiming a secure and sustainable operation, and well construction highlights. The leased FPSO Cidade de Maricá initiated production in February 2016, and the project strategy was to carbon copy FPSO Cidade de Ilhabela engineering (this FPSO is also producing in pre-salt), reducing design costs and schedule. Construction phase strategy was to build two identical FPSO's in parallel, FPSO's Cidade de Maricá and Cidade de Saquarema, with a planned 2 months schedule delivery gap. Suppliers and construction sites were the same, allowing cost reduction, construction risks mitigation and supply chain optimization. After one year of production, many challenges had to be surpassed, and all lessons learned were important for a solid ramp-up achievement and sustainable peak production.
- North America (1.00)
- South America > Brazil > Brazil > South Atlantic Ocean (0.61)
- South America > Brazil > Rio de Janeiro (0.49)
- South America > Brazil > Campos Basin (0.99)
- South America > Brazil > Brazil > South Atlantic Ocean > Santos Basin (0.99)
- North America > United States > Louisiana > Lula Field (0.99)
- (8 more...)
- Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)
- Management > Strategic Planning and Management > Project management (1.00)
- Facilities Design, Construction and Operation > Offshore Facilities and Subsea Systems > Floating production systems (1.00)
Optimizing Production of Santos Basin Pre-Salt Fields through Sound Reservoir Management Practices
Pizarro, Jorge Oscar de S. (PETROBRAS) | Poli, Renato Espirito B. (PETROBRAS) | Rosa, Marcelo Becher (PETROBRAS) | Silva, Victor Costa da (PETROBRAS) | Branco, Celso Cesar M. (PETROBRAS) | Cunha, Bruno Miranda (PETROBRAS) | Doria, Maria Assunção F. S. (PETROBRAS) | Alles, Noé (PETROBRAS) | Batello, Daniel (PETROBRAS) | Pinto, Antonio C. C. (PETROBRAS)
Abstract Since the beginning of the Santos basin pre-salt commercial production, in December 2010, more than 1 billion barrels of high quality oil have been extracted from these ultra-deep water carbonate reservoirs. To enable and accelerate production, Petrobras and its partners applied advanced and innovative technologies in various areas of engineering. This paper focuses on the reservoir strategies conceived during the design phase of the Lula and Sapinhoá development projects and their application in these fields. The authors highlight practices and processes whose extensive use, in this type of scenario, were not standard. Among these, the dynamic characterization of the reservoirs by the use of long-term tests coupled with remote monitoring of pressure; water and gas production control by alternating injected fluids; intensive use of intelligent completion; convertible wells to accelerate production growth (ramp-up); CO2 injection from the start of production; rock-fluid interaction tests; optimization of well stimulation and many others. Knowledge acquired during the first seven years of commercial production and the actions implemented to manage the reservoirs reflect on the production plateau extension and the final length of their expected productive life. The collection and analysis of static and dynamic data proved to be valuable to reduce uncertainties and support further development decisions. Integrated effort contributed to risk mitigation, production maintenance and increased forecasted final recovery. The results obtained emphasize the importance of an effective reservoir management approach to maximize production and recovery. Concepts adopted are clarified through practical examples showing the advantages and gains from their implementation. The final message is that safe and viable operation of ultra-deep offshore fields benefits from additional investments in acquiring specific reservoir data. Their integrated analysis using advanced and up-to-date techniques is considered essential to maintain and improve asset values.
- North America > United States > Louisiana (0.66)
- South America > Brazil > Brazil > South Atlantic Ocean (0.62)
- North America > United States > Texas (0.47)
- Geophysics > Time-Lapse Surveying > Time-Lapse Seismic Surveying (0.46)
- Geophysics > Seismic Surveying (0.46)
- South America > Brazil > São Paulo > South Atlantic Ocean > Santos Basin > Block BM-S-9 > Sapinhoa Field > Guaratiba Formation (0.99)
- South America > Brazil > Campos Basin (0.99)
- South America > Brazil > Brazil > South Atlantic Ocean > Santos Basin (0.99)
- North America > United States > Louisiana > Lula Field (0.99)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs (1.00)
- Reservoir Description and Dynamics > Reservoir Simulation (1.00)
- Reservoir Description and Dynamics > Improved and Enhanced Recovery > Waterflooding (1.00)
- (10 more...)
This paper presents the successful history of Lula NE Pilot Project, a challenging megaproject with an aggressive time-driven schedule, faster than industry average, that demanded new technology development in a scenario of uncertainty. The area is part of the supergiant Lula field, located in the pre-salt region of Santos Basin, Southeast Brazil, 300 km off the coast of Rio de Janeiro state, in 2000 m water depth. It is a joint venture with Petrobras as the Operator, and BG E&P Brasil and Petrogal Brasil as partners. The project was designed as a Pilot aiming to test some new concepts for the production development in the pre-salt area. In terms of subsea gathering system, an innovative concept was deployed, combining flexible flowlines lying on sea floor, with rigid steel catenary risers (SCR) supported by a buoy positioned 250 m below sea level. The drainage plan considered eight oil producers, some of them with intelligent completion, one gas / CO2 injection well and five water alternating gas (WAG) injectors (two subsea WAG manifolds were also installed). A balanced approach between data acquisition and facilities flexibility made possible to face the many reservoir and production uncertainties. Details of the development concept will be discussed, as well as the main results obtained so far, highlighting the strategies adopted in order to mitigate risks and the influence of the acquired information to the following projects in the area. The chartered FPSO Cidade de Paraty started production in June 2013, with an oil capacity of 120,0 bpd, and a gas plant able to process up to 5 million m/d of gas with 35% content of CO2. Despite all challenges faced, the project was delivered on time, with plateau attained in September 2014.
- South America > Brazil > Rio de Janeiro > South Atlantic Ocean (0.36)
- South America > Brazil > Brazil > South Atlantic Ocean (0.34)
- South America > Brazil > Rio de Janeiro > Rio de Janeiro (0.24)
- South America > Brazil > São Paulo > South Atlantic Ocean > Santos Basin > Block BM-S-9 > Sapinhoa Field > Guaratiba Formation (0.99)
- South America > Brazil > Rio de Janeiro > South Atlantic Ocean > Santos Basin > Block BM-S-11 > Tupi Field > Lula Formation (0.99)
- South America > Brazil > Rio de Janeiro > South Atlantic Ocean > Santos Basin > Block BM-S-11 > Tupi Field > Guaratiba Formation (0.99)
- (6 more...)
- Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)
- Reservoir Description and Dynamics > Improved and Enhanced Recovery > Miscible methods (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Open hole/cased hole log analysis (1.00)
- (4 more...)