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Dead-angle-free production allocation machine

A technology with dispenser and no dead angle. It is used in the production of fluids, wellbore/well components, and earth-moving drilling. It can solve problems such as shedding and blockage of oil outlets, and achieve the effect of preventing adhesion and accumulation.

Inactive Publication Date: 2013-12-25
CHENGDU KESHENG PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner wall of the oil inlet chamber of the existing distribution device is in the shape of a truncated cone or a cylinder with a large top and a small bottom. This time, there is a dead angle in the upper part of the oil inlet chamber when the oil and gas flow in the plug. After reaching a certain level, it will fall off under the vibration of the oil production pipe, and as the oil and gas enter the oil outlet cavity this time, the suddenly viscous fluid will block the oil outlet.

Method used

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Experimental program
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Effect test

Embodiment １

[0016] As shown in Figure 1, this embodiment includes a cylinder body 2, at least one oil inlet pipe 5, a central pipe 3 and a plug 1, the central pipe 3 is arranged in the cylinder body 2 and connected to the inner wall of the cylinder body 2, and the plug 1. The lower end is arranged in the central pipe 3. The lower part of the plug 1 is provided with at least one oil inlet 6, and the upper part is provided with a plurality of oil outlets 7. The upper part of the inner wall of the oil inlet chamber of the plug 1 is arranged as an arc surface.

[0017] The oil inlet pipe 5 passes through the cylinder body 2 and the center pipe 3 in turn, and is arranged in the center of the oil inlet port 6; the axes of the cylinder body 2, the center pipe 3, and the plug 1 coincide; Arrange upwards uniformly; O-rings 4 are arranged between the fitting gap between the plug 1 and the central tube 3; the number of O-rings 4 arranged between the fitting gap between the plug 1 and the central tube...

Embodiment ２

[0020] As shown in Figure 1, on the basis of Embodiment 1, this embodiment further provides a non-dead-angle distributing device according to the present invention, including: oil inlets 6 are arranged in multiples, and oil inlet pipes 5 are arranged along the cylinder. The oil inlet 6 is evenly distributed along the circumference of the plug 1, and the oil inlet pipe 5 and the oil inlet 6 are arranged in the center one by one. With this structure, the oil and gas in this layer enter the plug 1 with little resistance, and spray from all sides. The oil and gas in this layer entering the oil inlet chamber at the lower part of the plug collide with each other, which can be fully mixed to improve the flow effect of the oil and gas in this layer in the plug.

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Abstract

The invention discloses a dead-angle-free production allocation machine which comprises a barrel (2), at least one oil outlet pipe (5), a center pipe (3) and a blanking plug (1). The center pipe (3) is arranged in the barrel (2) and is connected with the inner wall of the barrel (2), the lower end of the blanking plug (1) is arranged in the center pipe (3), at least one oil inlet (6) is formed in the lower portion of the blanking plug (1), a plurality of oil outlets (7) are formed in the upper portion of the blanking plug (1), and an arc surface is arranged on the upper portion of the inner wall of an oil inlet cavity of the blanking plug (1). The dead-angle-free production allocation machine with the structure has the advantages that dead angles of current-layer oil gas on the upper portion of the oil inlet cavity can be eliminated when the current-layer oil gas flows in the blanking plug (1), high-viscosity components in the oil gas can be prevented from being adhered and accumulated in the dead angles, can drop under the vibration effects of production pipes and then are fed into an oil outlet cavity along with the current-layer oil gas, and accordingly the oil outlets (7) can be prevented from being blocked by fluid which turns viscous suddenly.

Description

technical field [0001] The invention relates to downhole mechanical equipment for oil well production layers in the field of oil recovery, in particular to a proration device without dead ends. Background technique [0002] The basic geological features of sandstone oilfields are heterogeneous and multi-reservoir. In order to avoid interlayer interference, give full play to the oil and gas production capacity of medium and low permeability layers, and further adjust the plane contradictions and interlayer contradictions of oil layers, it is necessary to adopt layered oil production measures, rationally allocate the oil production of each layer, and carry out layered production proration. . The layered oil production process string adopts the layered production technology of concentric and eccentric production rationers to realize the layered production ratio. The distribution device is composed of a distribution device cylinder and a plug. The oil and gas in this layer ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12
Inventor 贺昶明
Owner CHENGDU KESHENG PETROLEUM TECH
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