A composite perforating impulse automatic adjusting device

Abstract

The invention relates to the technical field of oil and gas field development tool equipment, particularly to a composite perforation impulse automatic adjustment device. The composite perforation impulse automatic adjustment device comprises a casing which is of a tubular structure; a perforating gun tubular column is arranged in the casing; symmetrical positions of two ends of the perforating gun tubular column are connected with one ends of adapters respectively; the other end of each adapter is connected with an adjuster; one end of each adjuster is provided with a plug. According to the composite perforation impulse automatic adjustment device, the energy generated in the deflagration process of the perforating charge and composite charge is mostly applied to a perforation channel to reduce the idle work of the extrusion on the liquid in a shaft and accordingly more and deep cracks are excited, the flow efficiency of a perforation tunnel is greatly improved, and the perfection degree of an oil and gas well is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development tools and equipment, in particular to a compound perforation impulse automatic adjustment device. Background technique [0002] At present, perforation is still the main completion technology in the process of oil and gas field development. The purpose is to establish a fluid channel between the wellbore of the completed oil and gas well and the oil and gas layer. The use of advanced perforation devices and techniques can improve the perfection of oil and gas wells. coefficient to ensure the productivity and life of oil and gas wells. However, due to the impact of the pressure relief area and volume of the wellbore in the current composite perforation process, the duration of the high pressure generated by the perforating charge and the composite charge during the deflagration process cannot be controlled, and a large part of the energy is only to squeeze the liquid in the we...

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Problems solved by technology

However, due to the impact of the pressure relief area and volume of the wellbore in the current composite perforation process, the duration of the high pressure generated by the perforating charge and the composite charge during the deflagration process cannot be controlled, and a large part of the energy is only to squeeze the liquid in the wellbore Work does not act on the perforation tunnel, and the ability of the energy to excite rock fractures cannot be fully utilized, thus limiting the effect of perforation

If the perforating operation is carried out with a packer, although the pressure relief volume has been controlled to a certain extent, the perforation string itself cannot be controlled by itself due to the thermal, chemical, hydraulic and mechanical effects of the composite drug deflagration , so that if the installation distance between the packer and the perforating gun is too far, although there is a certain pressure relief volume, it will affect the perforation effect; if the installation distance between the packer and the perforating gun is too close, although it can guarantee perforation effect, but at the same time, it will also cause damage to the casing, perforation string and tubing in the perforated well section, resulting in a series of adverse consequences

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