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Oil delivering pipeline casing

An oil pipeline and casing technology, which is applied in the field of oil transportation, can solve the problems of affecting the filtering effect, complicated structure of oil well screens, easy deformation of the filtering layer, etc., and achieves the effects of stable filtering effect, simple and practical structure, and convenient downhole operation.

Inactive Publication Date: 2019-01-01
XIAN ANT PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Oil delivering pipeline casing

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Embodiment Construction

[0016] as attached figure 1 In the shown embodiment, the present invention is provided with: a central supervisor 2, a screen core pipe 4, an outer sheath pipe 5, the central supervisor 2 is a drilled screen tube type central supervisor with sieve holes drilled in the pipe body section, and the outer sheath The tube 5 is the outer sheath tube of the grooved bridge-type slotted screen tube punched with filter seams on both sides. The drilled screen tube body of the central main pipe 2 is surrounded by three layers of filter core tubes 4 with different diameters. The outside of the filter core tube 4 is connected to the outer sheath tube 5 of the groove bridge type punching screen, and the outer sheath tube 5 of the groove bridge type punching screen and the two ends of the filter core tube 4 are fixedly connected to the joint. The ring 3 and the link ring 3 are fixedly welded on the central main pipe 2 pipe body.

[0017] Further, the outer sheath pipe of the present invention...

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Abstract

The invention discloses an oil delivering pipeline casing which is provided with a center main pipe, outer protection sleeve pipes and filter net core pipes. The center main pipe is a drilling screening pipe type center main pipe (2) drilled with screening holes; the one-to-six layers of filter net core pipes (4) are connected to the exterior of a drilling screening pipe body of the center main pipe (2) in a sleeving mode; the outer protection sleeve pipes are connected to the exteriors of the filter net core pipes (4) in a sleeving mode; and the two ends of the outer protection sleeve pipes and the filter net core pipes (4) are fixedly connected with linkage rings (3) which are fixedly connected to the pipe body of the center main pipe (2). When the oil delivering pipeline casing is used,the same as an existing oil well screening pipe with a filter function, according to the design requirements, the two ends of the oil delivering pipeline casing are assembled on an oil recovery wellpipe, and oil recovery and sand prevention filtration operation can be carried out.

Description

technical field [0001] The invention belongs to the technical field of petroleum transportation, and relates to an oil transportation pipeline casing. 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., due to structural li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/08
CPCE21B43/086
Inventor 栗汝杰
Owner XIAN ANT PETROLEUM TECH
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