Composite liners for perforators

a perforator and composite technology, applied in the field of perforators, can solve the problem that oil/gas from the formation surrounding the wellbore cannot make its way to the production tubing, and achieve the effect of reducing debris

a perforator and composite technology, applied in the field of perforators, can solve the problem that oil/gas from the formation surrounding the wellbore cannot make its way to the production tubing, and achieve the effect of reducing debris

US20130292174A1Inactive Publication Date: 2013-11-07BAKER HUGHES INC
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  • Composite liners for perforators
  • Composite liners for perforators
  • Composite liners for perforators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016]The method and system of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings in which embodiments are shown. The method and system of the present disclosure may be in many different forms and should not be construed as limited to the illustrated embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey its scope to those skilled in the art. Like numbers refer to like elements throughout.

[0017]It is to be further understood that the scope of the present disclosure is not limited to the exact details of construction, operation, exact materials, or embodiments shown and described, as modifications and equivalents will be apparent to one skilled in the art. In the drawings and specification, there have been disclosed illustrative embodiments and, although specific terms are employed, they are used in a generic and descriptive sense onl...

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Abstract

A shaped charge having a charge case and liner with an outer layer and an inner layer. The liner is a generally hollow frustoconically shaped member with an open end and a closed end, where the closed end of the liner inserts into an opening in the charge case. An explosive is provided between the liner and the charge case. The inner layer of the liner includes a higher density material than material used for forming the outer layer.

Description

BACKGROUND[0001]1. Field of Invention[0002]The invention relates generally to a method and system for perforating a wellbore. More specifically, the present invention relates to a liner for a shaped charge having inner and outer layers.[0003]2. Description of Prior Art[0004]Perforating systems are used for the purpose, among others, of making hydraulic communication passages, called perforations, in wellbores drilled through earth formations so that predetermined zones of the earth formations can be hydraulically connected to the wellbore. Perforations are needed because wellbores are typically lined with a string of casing and cement is generally pumped into the annular space between the wellbore wall and the casing. Reasons for cementing the casing against the wellbore wall includes retaining the casing in the wellbore and hydraulically isolating various earth formations penetrated by the wellbore. Sometimes an inner casing string is included that is circumscribed by the casing. W...

Claims

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Application Information

Patent Timeline
07 Nov 2013
Publication
US20130292174A1
IPC
E21B43/116; E21B7/00
CPC
E21B43/117; E21B43/116
Inventors
HARVEY, WILLIAM B.; WENDT, JR., CLARENCE