Unlock instant, AI-driven research and patent intelligence for your innovation.

Shaped charge for perforating gun having main body of explosive TATB and sensitive primer

A detonating charge and sensitivity technology, applied in the direction of explosive charges, explosives, explosives processing equipment, etc., can solve the problem of increasing the amount of drilling fluid

Inactive Publication Date: 2008-12-24
SCHLUMBERGER OVERSEAS SA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the jet from the detonation of the shaped charge is longer, the longer the hole will be pierced in the well wall, potentially increasing the amount of drilling fluid from the perforation

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
  • Shaped charge for perforating gun having main body of explosive TATB and sensitive primer
  • Shaped charge for perforating gun having main body of explosive TATB and sensitive primer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Figure 1 is a schematic diagram of a commonly used shaped charge suitable for a perforating gun. The perforating gun is suitable to be placed on the well wall. The U.S. No. 4,724,767 patent granted to Aseltine on February 16, 1988 has introduced similar shaped grains in detail, and the U.S. No. 5,413,048 patent authorized to Wenner on May 9, 1995 has carried out detailed descriptions of similar shaped grains again. describe. They are incorporated by reference in the present invention.

[0014] As shown in Figure 1, the shaped charge includes a casing 10 and a main explosive 12. In the past, the main explosive was either RDX, HMX, PYX, or HNS, and the main explosive 12 was attached to the inner wall of the casing 10. , the detonating charge 13 is close to the main explosive, so as to facilitate the detonating charge to detonate the main explosive, and the bushing 14 is lined on the guiding charge 13 and the main explosive 12. The shaped charge also includes a top 18 a...

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 includes a body explosive and a detonating charge adapted to detonate the body explosive. According to the present invention, said main explosive comprises a component called TATB, which is not suitable as a detonating charge because of its low sensitivity to TATB, and therefore, the detonating charge must consist of a charge with a higher TATB sensitivity. As stated in the specification, the main explosive of the shaped charge is changed to be composed of TATB, while the detonating charge is composed of a charge that is more sensitive than TATB, such as HNS or NONA, or PYX, or HMX, or TATB and HNS, NONA, DODECA , PYX, the mixture of one of HMX, then, when the shaped charge is detonated, the jet produced will be longer than the jet produced by the main explosive that did not use TATB as the shaped charge in the past. It can be seen that the main body explosive composed of TATB and the detonation with higher sensitivity according to the present invention can produce longer jets, which can punch longer holes on the well wall rock formation, and finally flow out from the holes. The amount of drilling fluid will increase. The detonating cord may also contain TATB explosives.

Description

technical field [0001] The invention relates to a shaped charge for a perforating gun. The charge includes a main explosive and a detonating charge. The main explosive is TATB (sym-triaminotrinitrobenzene), and the detonating charge is a more sensitive explosive than TATB. A high explosive suitable for detonating a body explosive. The invention also relates to other downhole blasting devices, such as casings and pipe cutters, primers, detonating cords and detonators. Background technique [0002] The shaped charge includes the main explosive, that is, the secondary explosive. When the primary charge detonates, it is also detonated according to the propagation of the detonation wave in the priming charge. When the body charge detonates, the resulting jet propagates outward from the body charge. Containing a shaped charge inside the perforating gun, the perforating gun is used to punch through holes in the well wall. Drilling fluid is produced in the penetrated formation wh...

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): C06B21/00C06B25/04C06B45/00C06C7/00E21B43/117F42B1/02
CPCC06B45/00C06C7/00E21B43/117F42B1/02
Inventor 小W·福列克J·布鲁克斯J·埃伯哈德H·列治亚
Owner SCHLUMBERGER OVERSEAS SA
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com