Assembly and floatation method for drilling drivepipe

   
   

A method for assembling and delivering a drivepipe to a drill site. The method has the following steps: The drivepipe is assembled at a shoreline assembly station. Floatation devices are attached to the drivepipe and the drivepipe is floated in the ocean. The drivepipe is towed with tow vessels to a drill site. The drivepipe is delivered in a horizontal orientation to a drilling vessel at the drill site. An upper end of the drivepipe is attached to the drilling vessel and the tow vessels are detached from the drivepipe. The drivepipe is pivoted about its point of attachment to the drilling vessel until the drivepipe is vertically oriented. The buoyancy function of the floatation devices attached to the drivepipe is deactivated. The floatation devices are removed from the drivepipe. The drivepipe is equipped with a driving mechanism and the drivepipe is lowered with a running string from the drilling vessel to the sea bed.

Un método para montar y entregar un drivepipe a un sitio de taladro. El método tiene los pasos siguientes: El drivepipe está montado en una estación del montaje del litoral. Los dispositivos de la flotación se unen al drivepipe y el drivepipe se flota en el océano. El drivepipe se remolca con los recipientes del remolque a un sitio de taladro. El drivepipe se entrega en una orientación horizontal a un recipiente que perfora en el sitio de taladro. Un extremo superior del drivepipe se une al recipiente que perfora y los recipientes del remolque se separan del drivepipe. El drivepipe se gira sobre su punto del accesorio al recipiente que perfora hasta que el drivepipe se orienta verticalmente. La función de la flotabilidad de los dispositivos de la flotación unidos al drivepipe se desactiva. Los dispositivos de la flotación se quitan del drivepipe. El drivepipe se equipa de un mecanismo de arrastre y el drivepipe se baja con una secuencia corriente del recipiente que perfora a la cama de mar.

 
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