Oilfield perforators designed for high volume casing removal

A perforating device and perforating bullet technology, which can be used in offensive equipment, weapon accessories, wellbore/well components, etc., and can solve the problems of drilling pipe and wellbore stuck

Inactive Publication Date: 2020-11-10
OWEN OIL TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, drill pipe may become stuck in the wellbore

Method used

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  • Oilfield perforators designed for high volume casing removal
  • Oilfield perforators designed for high volume casing removal
  • Oilfield perforators designed for high volume casing removal

Examples

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Embodiment Construction

[0013] The present disclosure relates to apparatus and methods for subterranean activities such as casing perforation, casing removal, completion, removal of wellbore tubing and fishing operations. The present disclosure is suitable for different forms of embodiments. These will be shown in the accompanying drawings, and will be described in the detailed specific embodiments of the present disclosure. It should be understood that the present disclosure should be regarded as an example of the principle of the technical solution, and is not intended to be limited to the examples shown here. and described technical solutions.

[0014] see figure 1 and figure 2 , illustrates one embodiment of a shaped charge 10 according to the present disclosure in cross-sectional view. Shaped charge 10 is designed to produce a large diameter projectile for penetrating, cutting and / or dividing wellbore structures. Shaped charge 10 may include a casing 12 and a cover 14 . The housing 12 may ...

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PUM

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Abstract

The perforating tool (40) includes a cartridge (60) connected to a work string (112) and a perforator (10) secured in the cartridge disposed along the work string. The perforator includes a cylindrical casing (12), explosive substance, metal cap (14) and detonating cord (46). The housing has a partition (50) at a first end, an open mouth at a second end, and an interior volume. The first end includes a post (54) having a slot (56). An explosive substance is disposed in the inner volume. A metal cap (14) covers the open mouth of the housing and has a disc segment (20) defined by a divider ring (22). The separator ring has a structurally weakened region (24) surrounding the disk segment. The detonating cord is received in a groove in the cylinder.

Description

technical field [0001] The present disclosure is directed to apparatus and methods for subterranean perforating. Background technique [0002] Hydrocarbons, such as oil and gas, are produced from a cased wellbore that intersects one or more hydrocarbon zones in the formation. These hydrocarbons flow into the wellbore through perforations in the cased wellbore. In addition to casing, there are a variety of wellbore tubing that can be used in a wellbore. These pipes include liners, production tubing, drill pipe. In some cases, it may be necessary to split a portion of the wellbore tubular. For example, drill pipe may become stuck in the wellbore. Removing the drill pipe may require cutting the drill pipe into two pieces. In another example, tubing may need to be cut when a well is decommissioned. [0003] The present disclosure addresses a continuing need for perforators for use in subterranean operations that may occur during well construction, completion, repair, and / o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/117F42B1/028
CPCF42B1/028E21B31/002E21B43/117E21B43/119
Inventor S·吉尔特J·金赛M·C·克莱
Owner OWEN OIL TOOLS
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