Horizontal well automatic water controlling well completion pipe column structure

Abstract

The invention discloses a horizontal well automatic water controlling well completion pipe column structure. The horizontal well automatic water controlling well completion pipe column structure includes a punching outer pipe, a punching inner pipe and multiple water-swelling rubber columns uniformly arranged on the outer wall of the punching inner pipe. A concentric shaft of the punching outer tube sleeves the outside of the punching inner pipe and has a proper distance from the punching inner pipe. Multiple first punched holes are uniformly formed in the punching outer pipe along the outer wall, multiple second punched holes are uniformly formed in the punching inner pipe in the outer wall direction, and the multiple water-swelling rubber columns are independent of each other. By improving the structure, the horizontal well automatic water controlling well completion pipe column structure can automatically block the high water-cut horizontal well segment, a series of work of findingand blocking water in horizontal wells is avoided, and the horizontal well automatic water controlling well completion pipe column structure has the advantages of simple structure, relatively low cost, simple and easy construction, and no later management. The output of oil can be specially guaranteed on the basis of controlling the output of water.

Description

technical field [0001] The invention relates to the field of petroleum well completion and downhole operation, in particular to an automatic water control completion pipe string structure for a horizontal well. Background technique [0002] Compared with vertical well development, horizontal well development can significantly increase single well productivity, and has been widely used at home and abroad. However, the physical properties and liquid production properties of different well sections of long horizontal wells are different, and there is a problem of high water cut in some well sections. Excessive water cut will significantly reduce the economic benefits of horizontal wells, and even cause the horizontal well to be destroyed. At present, well logging, machinery, tracers and other methods are used to find the water outlet section, and then chemical water shutoff, mechanical water shutoff and other methods are used to seal the water. The operation process is complica...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a horizontal well automatic water control completion pipe string structure to solve the problem that the existing device can effectively control the water production rate but cannot effectively maintain the oil production rate

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