Serial connection type petroleum pipeline filtering device

Abstract

The invention discloses a serial connection type petroleum pipeline filtering device. The serial connection type petroleum pipeline filtering device comprises a multi-grade filtering inner core and a single-grade filtering inner core, wherein the outer part of the multi-grade filtering inner core is provided with an upper-grade filtering pipe section and is communicated with a low-grade filtering pipe section at the outer part of the single-grade filtering inner core through the pipe section; the inner part of the multi-grade filtering inner core is internally and vertically provided with three paths of net hole type filtering nets; a filtering groove is formed above the inner part of the single-grade filtering inner core; a layer of a filtering net is respectively and additionally arranged in each one of respective end ports of the engaged part of the upper-grade filtering pipe section and the low-grade filtering pipe section. The serial connection type petroleum pipeline filtering device disclosed by the invention has the beneficial effects that a serial connection type double-core structure is arranged to filter and filtering structures are respectively vertically and horizontally arranged inside the two inner cores; meanwhile, a filtering structure is additionally arranged at the engaged part of outer part pipe sections of the two inner cores, so that the aim of running water form filtering is realized; the serial connection type petroleum pipeline filtering device has the advantages of reasonable structure, convenience and practicability, strong filtering effect and the like, and is capable of filtering petroleum by layers and capable of providing convenient use conditions.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a series-connected petroleum pipeline filtering device. Background technique [0002] At present, pipe fittings used in petroleum, chemical industry, electric power, shipbuilding, metallurgy, machinery, textile, food, construction, pharmaceutical and other industries need to have high strength, pressure resistance, corrosion resistance and high temperature resistance. Therefore, in petroleum In the field of mining technology, in order to improve the recovery rate of oilfield crude oil, secondary oil recovery and tertiary oil recovery are usually carried out. The screen pipe is installed at the bottom of the oil well to separate the extracted oil from the sand in the formation A special pipe. However, the structure of the current petroleum screen is too simple. Generally, strip or hole-shaped screens are processed on the surface of the pipe, and some screens are ma...

AI Technical Summary

Problems solved by technology

However, the structure of the current petroleum screen is too simple. Generally, strip or hole-shaped screens are processed on the surface of the pipe, and some screens are made of stainless steel wire after drilling. Obviously, its filtering function is relatively poor. Poor, unable to filter in layers, unable to meet industrial needs; in addition, the current screen tube function is too single, can only perform screening operations, but cannot carry out normal transportation work, cannot meet people's needs, poor heat preservation effect, and is not durable Corrosion, short service life

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