Filling tool for oil field operation

Abstract

The invention provides an oil field operation filling tool and relates to the technical field of oil fields. The filling tool for the oil field operation comprises an outer pipe, an inner pipe is arranged in the middle position inside the outer pipe, a wear-resistant coating is arranged at the top of the surface of the outer pipe, an anti-corrosion coating is arranged in the middle position of thesurface of the outer pipe, and a sliding rail is fixedly connected to the bottom of the surface of the outer pipe. A second filling layer is arranged on the surface of the outer pipe, a valve is arranged at one end of the second filling layer, an opening door is arranged at the bottom of the valve, the second filling layer is arranged at the bottom of the surface of the outer pipe, and when a target layer is not reached during earth drilling, a first filling layer and the second filling layer are protected through the opening and closing door and a sliding door, the influence of fine sandstones in an oil field well is avoided, meanwhile, the wear-resistant coating, the anti-corrosion coating and the antirust resin paint are arranged on the surface of the outer pipe, so that the wear-resistant, anti-corrosion and antirust functions are achieved on the whole filling tool during drilling, and the filling tool is worthy of vigorous popularization.

Description

technical field [0001] The invention relates to the technical field of petroleum and oil fields, in particular to a filling tool for oil field operations. Background technique [0002] Oil field refers to a specific area of ​​crude oil production, and sometimes it is the general term for oil layers accumulated underground in a specific area. In a broad sense, several oil areas are collectively called an oil field. Now, filling tools are needed when operating on an oil field. . [0003] With the development of socialization, the range of filling tools used in downhole operations in oil fields is becoming wider and wider. However, there are some problems in the use of the current filling tools. When using this tool for filling, the purpose of filling is not achieved. When filling the layer, the fine sand and stone inside the oil well may enter the inner pipe through the outer nozzle, affecting the filling. At the same time, after the tool is used for filling, the internal san...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a filling tool for oilfield operations, which solves the problem that the sand-carrying liquid adheres to the inner wall of the cavity and the external sandstone will enter the inner pipe

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