The utility model relates to a large-span long-well-section partition-type oil production string, which is a device capable of packing an upper high water-content position and effectively producing crude oil in a lower low water-content formation. The oil production string comprises an oil-well pump string, a sealing insertion pipe and a hollow bridge plug, wherein an oil-well pump is connected into the oil-well pump string, the sealing insertion pipe is connected at the lower part of the oil-well pump string, the sealing insertion pipe is inserted into the hollow bridge plug which has already been set and deserted in a casing and is in close fit with the hollow bridge plug, thus the function of packing the produced fluid at the upper high water-content section is realized, the process is relatively simple and the sealing is reliable. The large-span long-well-section partition-type oil production string has the advantages that the well occupation period of large-span long-well-section plugging and the operation and well repair expense are greatly reduced, the plugging reliability is improved, a set of safe and reliable device and a technical means are provided for oil well repair measures and the production cost is reduced.