Body-free side detonation bidirectional perforator used for oil well

A technology for perforating guns and oil wells, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc. It can solve the problems of perforating gun stuck in the casing, waste of high-quality steel, malignant accidents, etc., so as to save operating costs , Perforating operation is safe, and the effect of avoiding expansion gun stuck in the well

Inactive Publication Date: 2011-04-20
营口市石光石油机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current conventional perforation mostly uses gun barrel perforation. This kind of operation not only wastes a lot of high-quality steel, but also causes serious vicious accidents and huge economic losses to the country if the perforating gun gets stuck in the casing.

Method used

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  • Body-free side detonation bidirectional perforator used for oil well
  • Body-free side detonation bidirectional perforator used for oil well
  • Body-free side detonation bidirectional perforator used for oil well

Examples

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Embodiment Construction

[0015] figure 1 It is a schematic diagram of oil well perforating operation. In oil exploration and production, it is usually necessary to drill wells on the oil-bearing land first, then lower the casing 3 into the well, then consolidate the casing 3 and the oil layer 5 with the cement sheath 4, and finally install the perforator The perforating gun 2 of 1 is lowered to a suitable position in the oil well. When the depth is calibrated, the perforating operation can be performed.

[0016] image 3 It is the structural diagram of the side detonation two-way perforator. The side detonation two-way perforator 101 is composed of two perforators coaxially and reversely installed together. In the figure, 1011 is the bullet casing, 1012 is the charge of the perforator, 1013 is the charge cover, and 1014 is the perforator. detonation hole.

[0017] Figure 4 It is an embodiment (I) of the present invention, and it is made up of a side detonation two-way perforator 101, detonating...

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Abstract

The invention provides a body-free side detonation bidirectional perforator used for oil wells. The body-free side detonation bidirectional perforator comprises three parts of a side detonation bidirectional perforator, a detonating cord and a pressure-resistant casing, and is characterized in that the pressure-resistant casing is sleeved outside the side detonation bidirectional perforator and the detonating cord. The operation principle of the device is that the adoption of side detonation through charging bidirectional perforation greatly increases the charging energy utilization rate of the perforator. Simultaneously, the solid casing can shield the majority of useless charging energy of the perforator, so that perforating operation does not seriously damage bushings and the surrounding environment. The device can save a lot of high-quality steel (perforating guns, gun joints, etc.), save the operation cost, avoid accidents of gun expansion, blocking in wells, etc., and make the perforating operation safer.

Description

1. Technical field [0001] The invention relates to a well completion device used in oil wells, in particular to a two-way perforator for oil wells without gun body and side detonation. 2. Background technology [0002] In oil exploration and oil production, it is first necessary to drill a well in the oil-bearing area, then run the casing, consolidate the casing and the oil layer, and finally put the perforator into the perforating gun and go down to the oil layer. After the depth is calibrated, the perforation operation can be carried out (such as figure 1 ). After perforation, the oil in the oil layer can enter the wellbore along the tunnel ejected by the perforating bullet and be collected to the surface. The current conventional perforation mostly uses perforation with a gun body. This kind of operation not only wastes a lot of high-quality steel, but also causes serious vicious accidents and huge economic losses to the country if the perforating gun gets stuck in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/116E21B43/1185
Inventor 史慧生张万忠
Owner 营口市石光石油机械有限责任公司
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