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Ejection type sidewall coring device

A catapult and coring technology, applied in the field of oil exploration, can solve the problem of impacting well wall coring relying on gunpowder and other problems, and achieve the effect of expanding market share

Pending Publication Date: 2021-05-28
武卫琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a catapult-type borehole coring device, which is driven by electromagnetic ejection instead of gunpowder, which can solve the problem of relying on gunpowder for percussion-type borehole coring

Method used

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  • Ejection type sidewall coring device
  • Ejection type sidewall coring device
  • Ejection type sidewall coring device

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Please refer to the attached Figure 1-3 , the present invention provides a kind of catapult sidewall coring device, comprising: collection circuit, electromagnet, coring device body 25, warhead 26, base 29, connecting head 10 and sealing cylinder 19; Wherein, warhead 26 and base Seat 29 is fixedly connected, and pedestal 29 is sleeved on the electromagnet, and electromagnet is fixed in coring device body 25 insides; The seat 29 is connected with the c...

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Abstract

The invention discloses an ejection type sidewall coring device. The ejection type sidewall coring device comprises a collecting circuit, an electromagnet, a coring device body, an ejection head, a base, a connector and a sealing cylinder, wherein the ejection head is fixedly connected with the base, the base sleeves the electromagnet, and the electromagnet is fixed to the interior of the coring device body; one end of the sealing cylinder is connected with the connector, and the other end is connected with the coring device body; and the collecting circuit is arranged in the sealing cylinder. According to the ejection type sidewall coring device, gunpowder driving is replaced by electromagnetic ejection, and the problem of dependence of impact type sidewall coring on gunpowder can be solved.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploration, and more specifically relates to a ejection type well wall coring device. Background technique [0002] At present, the percussion shaft wall coring devices all use gunpowder as the driving force. When used in the field, the gunpowder is installed on the corer ballistic, and a special core barrel assembly is placed on the gunpowder. The gunpowder is energized, and the gunpowder generates gas to push the When the core barrel hits the ground, due to various reasons, the pressure of the gunpowder gas is not enough to push the core barrel out, and there is a certain pressure in the ballistic memory. This situation has potential safety hazards. At the same time, because the gunpowder is a mixture of explosives and passivating agents, it has a shelf life. When it approaches or exceeds the shelf life, the power of the gunpowder will drop sharply, which will greatly reduce the yield of cori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B25/16
CPCE21B25/16
Inventor 武卫琴
Owner 武卫琴
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