Simulating perforating bullet, composite perforator and perforating operation method

A technology of composite perforation and perforating bullets, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well components, etc., which can solve the problems such as the decline of formation effect, and achieve the effect of improving effect and quality

Active Publication Date: 2014-02-19
XIAN TONGYUAN PETROTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a simulated perforating charge, a compound perforating device and a perforating operation method, which mainly solves the problem that the

Method used

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  • Simulating perforating bullet, composite perforator and perforating operation method
  • Simulating perforating bullet, composite perforator and perforating operation method
  • Simulating perforating bullet, composite perforator and perforating operation method

Examples

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Example Embodiment

[0020] When the composite perforator performs perforating operations on formations with a small oil layer thickness, usually one part of the perforating bomb is installed in the loading hole of the bomb rack, and the other part is not loaded, and gunpowder is filled between each perforating bomb Therefore, the effect of some intervals is better and some intervals are inferior, which greatly reduces the effect of downhole composite perforation operations.

[0021] The simulated perforating bomb of the present invention includes a non-metallic material shell 1 and a non-metallic material end cover 2. The non-metallic material shell 2 is provided with two cavities, one is the explosive cavity 3 for containing explosives, The other is a gunpowder cavity 4 for holding gunpowder.

[0022] In particular, both the non-metallic material shell and the non-metallic material end cover can be made of plastic, rubber or ceramics.

[0023] Based on the above-mentioned simulated perforating bullets...

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Abstract

The invention belongs to the field of perforation completion and particularly relates to a simulating perforating bullet, a composite perforator and a perforating operation method. When perforation is conducted in positions, with small thickness, of some downhole oil layers, the perforator provided with some simulating perforating bullets and some perforating bullets is adopted, so that deflagration pressure in the perforator is balanced at the instant of perforation, and the problem that operation effect is poor when a perforator provided with some simulating perforating bullets and some blank cartridges is adopted for perforation in positions , with small thickness, in downhole oil layers in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of perforation completion, and in particular relates to a simulated perforating charge, a compound perforator and a perforation operation method. Background technique [0002] In recent years, the development of oil fields has shifted to thin and poor layers, especially in some large oil fields, the thickness of the oil layers is generally very small, and some oil layers are only 0.5 meters thick. A few perforating bullets and propellant tablets are loaded, and sometimes less perforating bullets and propellant are required according to the requirements of the oilfield process, resulting in a lot of perforating operations of the composite perforator when the bullet is not full. [0003] Therefore, when the traditional compound perforator is used for downhole perforation, the effect of some intervals is better, and the effect of some intervals is poor. Through analysis, it is believed that one of the main reasons is tha...

Claims

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Application Information

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IPC IPC(8): E21B43/116
Inventor 张国桉赵俊孙宪宏
Owner XIAN TONGYUAN PETROTECH
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