A combined 3D spiral perforation simulation injection device and simulation method
An injection device and combined technology, applied in earth-moving drilling, wellbore/well components, and production fluids, etc., can solve the problem that the perforation injection device cannot simulate the real perforation situation, and avoid test failure, assembly and dismantling. Convenience and the effect of reducing test costs
Active Publication Date: 2021-05-25
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology
[0005] An object of the present invention is to provide a combined 3D spiral perforation simulation injection device, which is used to solve the problem that the current conventional perforation injection devices cannot simulate real perforation conditions, and at the same time can It is used to simulate and analyze the fracture initiation characteristics under the condition of 3D spiral perforation; another object of the present invention is to provide a simulation method for this combined 3D spiral perforation simulation injection device
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[0034] Below in conjunction with accompanying drawing, the present invention will be further described:
[0035] Such as figure 1 As shown, this combined 3D helical perforation simulation injection device includes that this combined 3D helical perforation simulation injection device can be composed of a certain number of parts with different functions, including joint part 1, connecting part 2, perforation There are four kinds of parts 3 and tail joint 4. There is a sealing ring 5 at the upper end of each component, and a connecting hole at the lower end. The center hole corresponding to the sealing ring 5 at the top of each component has a male button, and the connecting hole has a female button, so that the parts can be connected end to end, which is convenient for disassembly and assembly. According to the perforation plan, they are connected to each other to form a combined 3D spiral perforation simulation injection device. It can be poured into the artificial rock core ...
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The present invention relates to a combined 3D spiral perforation simulation injection device and a simulation method, wherein the combined 3D spiral perforation simulation injection device is connected to each other by a joint part, a plurality of connection parts, a plurality of perforation parts, and a tail joint. And sequentially detachable connection to form; perforating parts include body, upper cover, perforating ball seat and water-soluble perforating, the outer wall of the body has a ball seat hole, the perforating ball seat is arranged in the body, and the fixing screw passes through the hole on the upper cover. After the bolt hole and the bolt hole on the bolt connection block, fix the perforation ball seat, the perforation ball seat is provided with a water inlet, which communicates with the center hole on the upper end of the perforation part, and the water-soluble perforation is a cone with a closed tip. The root of the water-soluble perforation is inserted into the hole of the perforation ball seat exposed from the hole of the ball seat. The water-soluble perforation is made of PVA polyvinyl alcohol water-soluble material. The invention can flexibly adjust the number of perforations and the angle of perforation, and realize the simulation research of various 3D perforation modes.
Description
technical field [0001] The invention relates to an injection device for simulating reservoir perforation in the fields of rock mechanics engineering, petroleum engineering, reservoir reconstruction, etc., and specifically relates to a combined 3D spiral perforation simulation injection device and a simulation method. Background technique [0002] At present, unconventional oil and gas resources such as shale oil and tight oil usually require large-scale hydraulic fracturing in the reservoir to form effective productivity. Sexual initial perforation. In recent years, hydraulic fracturing technology for unconventional reservoirs has gradually developed. The 3D perforation technology with non-perpendicular perforation axis and wellbore axis can generate more fracture initiation fractures in the reservoir, thereby increasing oil and gas migration channels and increasing production. Therefore, the simulation analysis of hydraulic fracture initiation and extension characteristics...
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IPC IPC(8): E21B43/26E21B43/114E21B49/00
CPCE21B43/114E21B43/26E21B49/00
Inventor 张军曾佳严茂森张玖程正华余前港
Owner NORTHEAST GASOLINEEUM UNIV
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