One-time tubular column and method for sealing middle-mining two-end large-drift-diameter water plugging and production

The invention discloses a sealing middle-mining two-end large-drift-diameter water plugging and production one-time tubular column and method, and belongs to the field of oil field downhole operation. The pipe column is provided with an oil pipe, the oil pipe is formed by connecting an upper part and a lower part, the upper part is a common oil pipe, the lower part is a large-drift-diameter oil pipe, and the oil pipe is arranged in an artificial well. A screw pump and a constant pressure ball seat are sequentially arranged in the common oil pipe from top to bottom, and an oil pipe anchor is arranged on the outer side of the common oil pipe. And a large-drift-diameter releasing packer and a large-drift-diameter packer are arranged between the large-drift-diameter oil pipe and the artificial well wall. According to the invention, tripping of two rows of pipe columns is reduced, the production efficiency is improved, the labor intensity is reduced, engineering accidents are effectively prevented, and the product