Direct tie-in of a pipeline

A method of installing a subsea pipeline having a direct tie-in between a first section of the pipeline and a subsea structure, wherein, after installation, the first section is located at a tie-in position, the method comprising:

• laying at least a portion of the pipeline from a laying vessel moving in a laying direction, the at least a portion of the pipeline including the first section and a second section of the pipeline, such that the first section is beyond the tie-in position in the laying direction, and the first section and the tie-in position are beyond the second section in the laying direction;
• either before, during or after said laying, configuring the second section such that bending will be induced in the second section of the at least a portion of the pipeline when the first section is pushed or pulled back to the tie-in position, wherein configuring the second section includes displacing the second section horizontally and/or vertically while bending using a wire extending from one of a second vessel, a remotely operated vehicle and an autonomous underwater vehicle, the wire being directly connected to the second section such that the vertical or horizontal displacement of the second section provides an initial degree of bending in the second section;
• and
• pushing or pulling the first section back to the tie-in position,
• wherein, responsive to said pushing or pulling, bending is induced in the second section, and
• wherein the first section is pulled or pushed back to the tie-in position using a mechanism installed in the subsea structure.

A method of installing a subsea pipeline having a direct tie-in between a first section of the pipeline and a subsea structure, wherein, after installation, the first section is located at a tie-in position, the method comprising:

• laying at least a portion of the pipeline from a laying vessel moving in a laying direction, the at least a portion of the pipeline including the first section and a second section of the pipeline, such that the first section is beyond the tie-in position in the laying direction, and the first section and the tie-in position are beyond the second section in the laying direction;
• either before, during or after said laying, configuring the second section such that bending will be induced in the second section of the at least a portion of the pipeline when the first section is pushed or pulled back to the tie-in position, wherein configuring the second section includes displacing the second section horizontally and/or vertically while bending using a wire extending from one of a second vessel, a remotely operated vehicle and an autonomous underwater vehicle, the wire being directly connected to the second section such that the vertical or horizontal displacement of the second section provides an initial degree of bending in the second section;
• and
• pushing or pulling the first section back to the tie-in position,
• wherein, responsive to said pushing or pulling, bending is induced in the second section, and
• wherein the first section is pulled or pushed back to the tie-in position using a mechanism included in the first section.