Offshore fouling: investigation methods

On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore,the methods and technologies used in coastal waters are not feasible because of the higher risk of losing investigation equipment or facilities.A series of methods and technologies for offshore fouling investigation that have been successfully applied is given in detail and it is hoped that the experience can be helpful for further studies.