what is a pig tool for an offshore operation?
 pig tool is received by a pig receiver. Pig receiver is also a vessel used for receiving the pipe pig tool. Pig launchers and receivers are designed to meet the specific requirements of a pipeline. Pig traps can be of horizontal, vertical or inclined type.For ease of operation, horizontal pig traps are preferred.When space constraints become critical, vertical or inclined pig traps are installed instead of horizontal. 