Patent ID: 9222338
Filing Date: 2015-12-29
Classification: E21B,F16L

Abstract:
1. A retrievable tool for lowering, alternatively later retrieval, of a pipeline end, the pipeline end being provided with a connecting part designed for mating and connection with a first connecting part on the sea bed, and being so arranged that the tool can be brought to the surface again for reuse, said tool comprising: a central lifting frame; a guiding part forming an extension of the central lifting frame; a lifting yoke; a connector part releasably retained at a bottom surface of the central lifting frame, the connector part including a first contact portion and a second contact portion; and a ramp structure having: wherein the central lifting frame has a bottom edge, and a recess in the bottom edge configured to accommodate a pipeline end, wherein the retrievable tool is configured to engage and support the connector part provided on the pipeline end to be lowered towards the first connecting part located on the sea bed, and the retrievable tool, in its entirety, is configured to be released from the connecting part that is provided on the pipeline end so as to be brought to the surface again for reuse to lower, and alternatively later retrieve, another pipeline end, and wherein the plate part of the ramp structure is configured to engage the first contact portion of the connector part, and the base surface of the ramp structure is configured to engage the second contact portion of the connector part.