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seline;">Washover proceed is the efficient way for freeing the stuck accidents during the downhole operation. It is almost suitable for various stuck accidents. When the stuck accidents happen in downhole, it can free the stuck tools in short time, releasing you anxiety.
seline;">Washover pipe is the necessary tool for doing the washing operation. It adopts the connection of high strength pipe material and two-stage thread to assure the requirement of washing, avoiding some phenomenal such as the screw thread slipping, leaking, pipe breaking off, sticking pipe and so on which occurred by using common pipe. Therefore, it satisfies the need of the washing operation that the specifications of ordinary wash over cannot meet. For instance, washing the drill collar 8"seline;">in the 9 5/8"seline;">borehole and the drill collar 7"seline;">in the 8 1/2"seline;">borehole.
seline;">The two-stage thread used on the wash over pipe is a new-type connection, producing in the 80’s in America. Especially, the special wash over pipe is a serial product.
