Construction Technology Study on Long-distance and Complex Stratum Project by Horizontal Directional Drilling

The crossing curve of Waidiaodao-Cezidao offshore pipeline directional drilling project is extraordinary long and stratum conditions are very complicated, the construction difficulties are unprecedentedly. The characteristics and difficulties of the project are analyzed and the requirements of construction technology are taken into account. The accomplishment of Waidiaodao-Cezidao offshore pipeline crossing provides the construction experiences in the realm of long-distance and complicated geological directional crossing.Subject Headings : offshore pipeline, horizontal directional drilling,technology,application