Coiled tubing steel shot jet flow perforating device

Abstract

The invention belongs to the field of oil drilling, and particularly relates to a continuous tubing steel shot jet flow perforating device, which comprises a perforating liquid storage tank, a sand mixing pump, a steel shot storage tank, a screw conveyor, a fracturing pump, a liquid inlet valve body, a drain valve body, a cable car, a coiled tubing, a whipstock, an anchoring device, a centralizingdevice, a perforating device, a nozzle and the like. The effective high-pressure sealing of the solid-liquid two-phase fluid of large-diameter high-density steel shots can be realized by the fracturing pump, and the steel shots and fluid are conveyed through the coiled tubing to improve the tripping efficiency; the steel shots and fluid underground are sprayed out through a well-designed nozzle to achieve rapid penetration of a casing and a cement ring, thereby effectively increasing the depth and diameter of a formation perforation, increasing the drainage area of reservoirs and improving the production of the reservoirs.

Description

technical field [0001] The invention relates to a coiled tubing steel particle jet perforating device, which belongs to the field of petroleum drilling. Background technique [0002] In recent years, oil wells in my country's old oilfields have generally entered the late stage of production. How to ensure stable production in old oilfields is very important, while the reserves of new oilfields are mostly tight, low-permeability, heavy oil reservoirs, which are difficult to exploit. At present, unconventional resources such as shale oil and gas and coalbed methane have gradually become the focus of development. In order to increase oil and gas production, most of the reservoirs are stimulated by perforation and fracturing at present. Shallow depth and long construction time can easily cause reservoir compaction damage, resulting in low reservoir permeability in perforated areas and poor production stimulation effects. With the continuous development of coiled tubing technolo...

AI Technical Summary

Problems solved by technology

At present, unconventional resources such as shale oil and gas and coalbed methane have gradually become the focus of development. In order to increase oil and gas production, most of the reservoirs are stimulated by perforation and fracturing at present. Shallow depth and long construction time can easily cause reservoir compaction damage, resulting in low reservoir permeability in perforated areas and poor production stimulation effects, etc.

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