The First Use of Pipeline Plough on Subsea Pipeline Trenching in South China Sea

摘要

The subsea pipeline trenching by a pipeline plough introduced to China for the first time is indicated in this paper, which was used in the Ledong 22-1/15-1 Field Development Project performed by COOEC. Proposed to achieve the trench depth of 1.8m, the pipeline plough succeeded trenching along the 24’’export pipeline over an approximate length of 54 km, which was launched in the depth up to 100m. Based on the Ledong project, the equipments, construction procedure and related highlights covered in the pipeline trenching are described herein.