operation arrow insertion: Picture a 2'' pipe fashioned like an arrow meaning a cone on the front end, thats inserted in the pipe. The cone base would be about 8'' in diameter deflecting the oil to the outer walls of the pipe.It would be 30ft or so long and the first 8 ft behind the cone would be fitted with bladders in the shape of tires, when they are filled. They can be made to fold and lye back or made to fold on top if them selfs with separate chambers like acordian style.There would be about 8 to ten bladders, fashioned this way attached to the pipe and filled by the 2'' pipie. At the end of the bladders is a sleeve that slides over the pipe, and then a spring rated at 2500 pounds another sleeve, and the fin of the arrow made from plate steel, cut in a circle the size of the inside diameters of the broken pipe coated on the edge with some kind of abrasive carbide to grab the inside of pipe. Then two small blocks welded behind the plate that has a whole in the center to accommodate the pipe and is piano hinged together. Insert the arrow in to the pipe just past the fin at a very high pressure pump the bladders full of water, they should help center the arrow when they inflate. the bladders will push the sleeve while they are filling to close the pipe, the pressure will push the spring which will push the fin back against the blocks which will open the fin and get it to jam itself. against the inner wall of the pipe between the bladders being filled up and the fin grabbing the inner walls that pipe should be able to be capped I would say the bladders should be made of leather they will seal pretty tight like leather packings. I would believe this could happen in about 24hrs not A WEEK IT WOULD TAKE SOME HARD WORK BUT IT DOES SOUND WORKABLE. JUST A THOUGHT