Oilfield perforator designed for high volume casing removal

A perforator and pipe string technology, which is applied in the direction of offensive equipment, weapon accessories, wellbore/well components, etc., can solve the problems of drilling pipe and wellbore stuck

Active Publication Date: 2018-07-31
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 perforator designed for high volume casing removal
  • Oilfield perforator designed for high volume casing removal
  • Oilfield perforator 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 embodiment. 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 b...

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PUM

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Abstract

A perforating tool (40) includes a charge holder (60) connected to a work string (112) and a perforator (10) fixed in a charge holder disposed along the work string. The perforator includes a cylindrical case (12), an explosive material, a metal cap (14), and a detonating cord (46). The case has a bulkhead (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). The explosive material is disposed in the interior volume. The metal cap (14) covers the open mouth of the case and has a disk section (20) defined by a separator ring (22). The separator ring has a structurally weakened zone (24) that encircles the disk section. The detonating cord is received in the slot of the post.

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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IPC IPC(8): F42B1/028E21B43/117
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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