Combined 3D spiral perforation simulation injection device and simulation method
An injection device and combined technology, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problem that the perforation injection device cannot simulate the real perforation situation, and avoid test failure, assembly and dismantling Convenience, the effect of increasing the bonding strength
Active Publication Date: 2021-03-23
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 Part 3, tail joint 4 four kinds. 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 buckle, and the connecting hole has a female buckle, 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 helical perforation simulation injection device. It can be poured into the artificial rock core for hydraulic fr...
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The invention relates to a combined 3D spiral perforation simulation injection device and a simulation method. The combined 3D spiral perforation simulation injection device is formed by communicatinga joint part, a plurality of connecting parts, a plurality of perforation parts and a tail joint and sequentially and detachably connecting the joint part, the connecting parts, the perforation partsand the tail joint. The perforating component comprises a body, an upper cover, a perforating ball seat and a water-soluble perforating hole, a ball seat hole is formed in the outer wall of the body,the perforating ball seat is arranged in the body, a fixing screw penetrates through a bolt hole in the upper cover and a bolt hole in a bolt connecting block to jack and fix the perforating ball seat, the perforating ball seat is provided with a water inlet, and the water inlet is communicated with a center hole in the upper end of the perforating component. The water-soluble perforation is a conical shell with a closed tip, the root of the water-soluble perforation is inserted into a hole of the perforation ball seat exposed from the ball seat hole, and the water-soluble perforation is madeof PVA polyvinyl alcohol water-soluble materials. According to the invention, the perforation quantity and the perforation angle can be flexibly adjusted, and simulation research of various 3D perforation modes is realized.
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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