Due to its safest-operation, lowest-expense and highest-efficient, the pipeline system plays an important role in oil/gas/water transportation. However, the buried pipeline is sometimes leaked by the corrosion, human destruction, long-term Earth movement and so on. Therefore, the detailed and updated coordinates of the land and marine routed pipeline center-line is of vital importance for pipeline integrated management (PIM). In this paper, we try to review the existing small-diameter pipeline (D