Filling tools for oilfield operations

Abstract

The invention provides a filling tool for oilfield operations and relates to the technical field of petroleum and oilfields. Filling tools for oilfield operations, including an outer pipe, an inner pipe is provided in the middle of the outer pipe, a wear-resistant coating is provided on the top of the surface of the outer pipe, an anti-corrosion coating is provided on the middle of the surface of the outer pipe, and the bottom of the outer pipe is fixedly connected There are slide rails. The surface of the outer pipe is provided with a second filling layer, one end of the second filling layer is provided with a valve, the bottom of the valve is provided with an opening door, and the bottom of the outer pipe is provided with a second filling layer. When drilling the ground, no When reaching the target layer, use the switch door and the sliding door to protect the first filling layer and the second filling layer to avoid the influence of fine sand and stone in the oilfield well on the inner pipe, and at the same time, the surface of the outer pipe is provided with wear-resistant coatings, Anti-corrosion coating and anti-rust resin paint, so that when the ground is drilled, the entire filling tool has the functions of wear resistance, corrosion resistance and rust prevention, which is worthy of vigorous promotion.

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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