Filter screen core pipe for oil transportation pipeline

Abstract

The invention discloses a filter screen core pipe for an oil transportation pipeline. The filter screen core pipe is provided with a center main pipe, outer protection sleeve pipes, and filter core pipes. The center main pipe is a drilling screen pipe type center main pipe (2) that is drilled with screen apertures in a pipe body segment; the outside of a pipe body of the drilling screen pipe of the center main pipe (2) is covered with 1-6 layers of filter core pipes (4); the outsides of the filter core pipes are coated with the outer protection sleeve pipes; both ends of the outer protection sleeve pipes and the filter core pipes (4) are fixedly connected with connecting rings (3); and the connecting rings (3) are fixedly connected with the pipe body of the center main pipe (2). When the filter screen core pipe is used, according to design requirements, both ends are assembled on an oil production well pipe, which is same as conventional oil well screen pipes with filtration, and thenoil production sand prevention filtration operation can be performed.

Description

technical field [0001] The invention belongs to the technical field of petroleum transportation, and relates to a filter screen core pipe for an oil transportation pipeline. Background technique [0002] With the continuous development of oil and natural gas extraction industry and the rapid advancement of science and technology, the technical requirements for oil extraction equipment are also getting higher and higher. In the exploitation of oil and natural gas, due to the limitation of the underground oil layer environment, especially in order to improve the quality of the crude oil produced, an oil well screen with filter is usually installed at the set position of the oil production well pipe. In the known technology, the existing oil well screens with filtration are mainly drilled screens with sieve holes drilled in the pipe body, slotted screens with slits cut in the pipe body, and wound screens wound on the support frame. There are trapezoidal wire-wound screens, etc...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing technology, solve the problem that the existing oil well screen with filter has a complicated structure, and the filter layer is easily deformed and affects the filtering effect.

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