Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Inactive Publication Date: 2013-11-07
BAKER HUGHES INC
View PDF11 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a perforating gun system for use in oil and gas wells that includes a shaped charge made up of a charge case, a liner with inner and outer layers, and an explosive underneath the liner. The shaped charge is designed to invert and discharge the liner to form a metal jet that perforates the wellbore and deposits a slug on the inner surface of the gun to prevent debris from flowing out. The system can also include a detonation cord that connects to each shaped charge. The inner and outer layers of the liner are made of metal particles that are cold pressed into shape. The technical effect of this patent is to provide a safer and effective tool for drilling oil and gas wells by reducing debris and promoting wellbore stability.

Problems solved by technology

Without the perforations oil / gas from the formation surrounding the wellbore cannot make its way to production tubing inserted into the wellbore within the casing.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E21B43/116E21B7/00
CPCE21B43/117E21B43/116
Inventor HARVEY, WILLIAM B.WENDT, JR., CLARENCEHETZ, AVIGDORBETANCOURT, DAVID
Owner BAKER HUGHES INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com