Catridge shape cover, perforating bullet shell and ultra-deep penetrating perforating bullet

A technology of liner and perforating bullets, which is applied in the fields of mining fluid, wellbore/well components, earthwork drilling and mining, etc. It can solve the problems of failure to meet comprehensive performance requirements, increase the diameter of liner, and increase the risk of blasting guns, etc. problem, to achieve the effect of safety guarantee, lengthening of jet length and improvement of detonation rate

Inactive Publication Date: 2014-04-02
NORTH SCHLUMBERGER OILFIELD TECH XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, in order to increase the penetration depth of the projectile, the method of increasing the diameter of the charge cover (charge) and increasing the charge amount is usually adopted. Some data show that the charge amount of a certain type of perforating charge has reached 80g, but this method The effect is limited, and at the same time, it brings many disad

Method used

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  • Catridge shape cover, perforating bullet shell and ultra-deep penetrating perforating bullet
  • Catridge shape cover, perforating bullet shell and ultra-deep penetrating perforating bullet
  • Catridge shape cover, perforating bullet shell and ultra-deep penetrating perforating bullet

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Embodiment 1

[0041] The size of the perforating charge in this embodiment: outer diameter 52mm, height 64mm.

[0042] The structure of the medicine cover is as follows: figure 1 As shown, the relevant dimension is the outer diameter of the cover is 46mm.

[0043] The structural features of the drug-shaped cover are: the outer busbar of the drug-shaped cover is divided into three sections, the first section from the top of the cover to the bottom of the cover is a straight line (this section is about 0.35 times the height of the cover), and the second section is an arc (or ellipse) ( This section is about 0.2 times the cover height), the third section is a straight line (this section accounts for about 0.45 times the cover height); the busbar in the drug-shaped cover is divided into three sections, the first section is a straight line from top to bottom, and the second section is a circle arc (or ellipse), and the third segment is a circular arc (or parabola); a tangent (or close to tangen...

Embodiment 2

[0050] The size of the perforating charge in this embodiment: outer diameter 52mm, height 64mm.

[0051] The cover outer diameter of this embodiment medicine type cover is 46mm.

[0052] The structural characteristics of the medicine-shaped cover are: Figure 6 As shown, the bus bar outside the drug-type cover is divided into three sections, the first section from top to bottom is a straight line (this section accounts for about 0.35 times the cover height), and the second section is an arc (or ellipse) (this section accounts for about 0.2 times the cover height) Cover height), the third section is a straight line (this section accounts for about 0.45 times the cover height); the busbar in the medicine-shaped cover is divided into 3 sections, the first section is a straight line from top to bottom, and the second section is an arc (or ellipse) , The third segment is arc (or parabola); tangent (or close to tangent) transition is adopted between each segment. Make the drug-sha...

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Abstract

The invention relates to a catridge shape cover, a perforating bullet shell and an ultra-deep penetrating perforating bullet. The catridge shape cover has a wall thickness-varying structure composed of an inner conical surface and an outer conical surface; an inner bus and an outer bus are formed by randomly combining multiple sections of line segments; each of the line segments comprises a straight line and a quadric curve; a conical and curve surface multi-sectional combined wall thickness-varying structure is adopted as the structure of the catridge shape cover, so that the sufficient long and thin state of a formed jet flow is ensured and the middle breakage is prevented; the bus of the inner wall of the perforating bullet shell is formed by connecting a plurality of straight lines; the slopes of the adjacent straight lines are different; the bus of the inner wall of another perforating bullet shell is formed by connecting straight and arc curved line segments; the perforating bullet comprises the catridge shape cover and the perforating bullet shell; the perforating bullet has a small-dose loading structure; compared with the large-dose loading structure design, the small-dose loading structure combined with whole structure optimal design has the advantages that the ultra-deep penetrating perforating effect is achieved and the safety of perforating equipment operation is greatly increased.

Description

technical field [0001] The invention relates to the technology of energy-shaping perforating charges, in particular to a novel liner and ultra-deep penetrating perforating charges. Background technique [0002] In the process of oil production, perforation penetration is the biggest factor affecting the production rate of oil wells. It has been proved that increasing the perforation depth of perforating bullets can greatly improve the perforation effect, reduce fracturing pressure, expand the communication area of ​​oil layers, increase Oil and gas well production. [0003] Currently, assembly The average penetration depth of the perforating bullets of the perforating gun on the API19B concrete target is about 600mm. The average penetration depth of the perforating bullets of the perforating gun on the API19B concrete target is about 730mm. The average penetration of the perforating bullets of the perforating gun on the API19B concrete target is about 850mm. In the pr...

Claims

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Application Information

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IPC IPC(8): E21B43/119E21B43/116
Inventor 石健郭红军王锋郭惊雷汪长栓王宝兴李森元谢骊航谢明召
Owner NORTH SCHLUMBERGER OILFIELD TECH XIAN
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