PROCESS, PIG AND PRESSURE HOUSING FOR LAYING AN ELONGATED ELEMENT

摘要

According to the process of laying a cable (1) by a push/pull method described, we use more than one pulling pig (2, 20a, 20b). If the first pulling pig (2) is disposed at the front end of the cable, other pulling pigs (20a, 20b) are disposed at regular intervals along the cable (1), surrounding the latter. Each pulling pig (2, 20a, 20b) comprises in particular pressure reducing means (7) permitting to distribute the entire pressure of the fluid between all the pulling pigs. Different embodiments of a pressure housing (12) are also described.