Abstract
The increasing consumption of petroleum makes it necessary to seek new producing areas, especially in the neighbourhood of the main consumption districts. The rock layers containing petroleum often extend beneath the sea, and in such cases the method of extraction of the petroleum involves specialised techniques, which depend on the nature of the site. The first tests were out in the Gulf of Mexico, where the sea is shallow and mainly calm. In Europe the problem is different, since the sea is usually deeper and more agitated, so that the classical drilling methods cannot be applied. To overcome these difficulties the floating platforms were introduced. These are taken to a given site, and fixed there. The French firm Neptune has two such platforms: «Neptune I» and «Neptune-Gascogne», whose functional features are described in this article. These platforms have three fixed points of support on the soil, but in the near future, to be able to reach depths of 200 to 300 m, it will be necessary to do without the fixed points of support, as they greatly limit the use of the platforms. Submergible platforms, with static or dynamic anchorage systems, are being studied, and it is hoped to carry out trials fairly soon.
Highlights
Soluciones adoptadtMSEl empleo de plataformas hincadas en el lugar de prospección presenta mayores dificultades a medida que aumenta la profundidad del fondo.
Estas plataformas son difícilmente recuperables y resultan totalmente inadecuadas para las profundidades entre 40 y 60 m a las que se llega actualmente.
Concretamente, en Francia, la Compagnie Française d'Entreprises construye piezas auxiliares para las compañías americanas o sus filiales.
Summary
El empleo de plataformas hincadas en el lugar de prospección presenta mayores dificultades a medida que aumenta la profundidad del fondo. Estas plataformas son difícilmente recuperables y resultan totalmente inadecuadas para las profundidades entre 40 y 60 m a las que se llega actualmente. Concretamente, en Francia, la Compagnie Française d'Entreprises construye piezas auxiliares para las compañías americanas o sus filiales. Los elementos más destacables del casco son: a) la viga-carril para el desplazamiento del «derrick»: capaz de soportar una carga permanente de 800 t y una sobrecarga de 500 t, apoyada en una pared ondulada análoga a las laterales; b) los amarres de los grupos motorreductores de las pilas: en el caso de la Neptune-Gascogne están formados por dos bisagras por pie que facilitan su inclinación, siendo el peso aproximado de cada bisagra 25 toneladas. Los pies sustentantes tienen forma triangular, y sus aristas disponen de cremalleras para el desplazamiento del casco.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
