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Petroleum perforating bullet device through electromagnetic driving

An electromagnetic-driven, perforating charge technology, applied in the field of petroleum exploration, can solve the problems of secondary pollution and secondary damage, small perforation depth, difficult to control, etc., and achieve high energy utilization rate, increased perforation capacity, hole depth and Effects with easy size control

Active Publication Date: 2018-11-27
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide an electromagnetically driven petroleum perforating charge device, which solves the technical pr

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  • Petroleum perforating bullet device through electromagnetic driving
  • Petroleum perforating bullet device through electromagnetic driving

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0016] The present invention adopts the magnetic field coupling method that is easy to control, and utilizes the high-energy pulse capacitor group to produce the strong current of megaampere level, and strong current flows through the metal cover device 1 surface of the present invention and produces the hoop magnetic field, and metal cover device 1 is subjected to axial direction The concentrated ampere force further crushes the metal cover device 1 to form a metal jet. Theoretically speaking, the velocity difference between the head and the tail of the jet formed by the electromagnetic loading technology is small, and it still has a strong penetration ability at a large explosion height. The greater the current flowing through the metal cover device 1, the greater the crushing speed of the metal cover device 1, the higher the velocity of the jet head, and t...

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Abstract

The invention discloses a petroleum perforating bullet device through electromagnetic driving. The device comprises a metal cover device, an input electrode, an insulation block and an output electrode, strong current is taken as the drive power to make the strong current flow through the surface of the metal cover and generate a toroidal magnetic field, the metal cover is crushed under the effectof Ampere force gathering in the axial direction to form high-speed high-pressure metal jet flow, and the metal jet flow can penetrate hard rock so that a deep hole can be formed. By controlling thecurrent magnitude, the taper angle, the generatrix length and the wall thickness of the metal cover, the length, quality and speed of the jet flow can be controlled to further control the depth and size of a perforating hole. According to the device, not only can the design method, with a new concept and a new principle, for a petroleum perforating bullet be enriched, but also a single mode that the perforating bullet is driven by explosive for using for decades is broken through, the device can be applied to petroleum exploration and exploiting, the petroleum exploitation rate is increased, and the perforating hole quality is improved.

Description

technical field [0001] The invention belongs to the field of petroleum exploration, and in particular relates to an electromagnetically driven petroleum perforating bullet device. Background technique [0002] One of the most important stages in the process of oil and gas exploration and development is to open the reservoirs, that is, those production formations that are to be tested in exploratory wells or tested in industrial production. Oil well perforation is a key technology in oil exploration and production. Perforation allows communication between the wellbore and the predicted full reservoir. Effective perforation perforation is crucial to correctly evaluate oil and gas reservoirs, improve oil and gas well productivity and oil and gas reservoir recovery. At the same time, whether the perforation technology is perfect or not directly affects the expected productivity of oil and gas wells and the protection of oil and gas layers. [0003] Since the use of shaped cha...

Claims

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Application Information

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IPC IPC(8): E21B43/117E21B43/1185
CPCE21B43/117E21B43/1185
Inventor 贾鑫豆剑豪黄正祥朱奇峰祖旭东肖强强
Owner NANJING UNIV OF SCI & TECH
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