Oil pipe oil extraction device

Abstract

The utility model discloses an oil pipe oil extraction device which comprises a valve body, an oil pipe, a first oil pipe and a second oil pipe. A fluid inlet and a fluid outlet which are communicated with the floating cavity are respectively formed in the upper end and the lower end of the valve body; the total overflowing area of all the fluid outlets is smaller than that of the fluid inlets; the floating plate is arranged in the floating cavity, and the overflowing area between the floating plate and the inner wall of the floating cavity is larger than the total overflowing area of all the fluid outlets. The floating plate can move up and down according to the buoyancy of fluid in the floating cavity, when oil enters the floating cavity, the density of the oil is small, the floating plate sinks, the distance between the upper surface of the floating plate and the fluid inlet is increased, and the oil can stably enter the floating cavity and flow into the oil pipe; when the high-water-content oil-water mixture or water enters the floating cavity, the density of the fluid in the floating cavity is large, the floating plate floats upwards to block the fluid inlet, and the high-water-content oil-water mixture or water cannot enter the oil pipe, so that the oil production quality and the oil production rate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole tools in oil and gas fields, in particular to an oil pipe oil production device. Background Art

[0002] As horizontal well production proceeds, the well-known pressure drop funnel phenomenon, horizontal wellbore rock heterogeneity, permeability anisotropy, the distance between different oil-water interfaces and the horizontal wellbore and other factors have combined to cause horizontal wells to face problems such as rapid water cut increase and edge and bottom water coning. If there is edge and bottom water around the horizontal wellbore, once water is seen in the horizontal well, long-term production may result in mixed oil and water output, affecting oil production quality and oil recovery rate. Utility Model Content

[0003] In order to solve the above problems, the present application provides an oil pipe oil production device, which can control the output of oil-water mixture with high water content and improve the oil recovery rate.

[0004] The purpose of the utility model is achieved through the following technical solution: an oil pipe oil production device, comprising:

[0005] A valve body, wherein a float cavity is arranged inside the valve body; and the upper end and the lower end of the valve body are respectively provided with a fluid inlet and a fluid outlet connected with the float cavity; and the total flow area of ​​all fluid outlets is smaller than the total flow area of ​​the fluid inlets;

[0006] The floating plate is arranged in the floating chamber, and the flow area between the floating plate and the inner wall of the floating chamber is larger than the total flow area of ​​all fluid outlets; the floating plate can move up and down according to the buoyancy of the fluid in the floating chamber, thereby adjusting the distance between the upper surface of the floating plate and the fluid inlet.

[0007] Furthermore, a support portion is provided at the bottom of the float chamber, and a diameter of the support portion is smaller than a diameter of the float plate; and the float plate is supported on the support portion.

[0008] The upper surface of the support portion is provided with a plurality of grooves horizontally penetrating the support portion.

[0009] The valve body is provided with a connecting body, and the connecting body is provided with connecting threads.

[0010] A guide column is vertically connected between the top wall of the float cavity and the support portion, the float plate is arranged on the guide column, and there is a clearance fit between the float plate and the guide column.

[0011] Compared with the prior art, this application has the following beneficial effects:

[0012] (1) The float of the utility model can move up and down according to the buoyancy of the fluid in the float chamber. When oil enters the float chamber, the density of the oil is small, the float sinks, and the distance between the upper surface of the float and the fluid inlet increases, so that the oil can stably enter the float chamber and flow into the oil pipe. When the oil-water mixture or water with a high water content enters the float chamber, the density of the fluid in the float chamber is large, the float floats and blocks the fluid inlet, and the oil-water mixture or water with a high water content cannot enter the oil pipe, thereby improving the oil production quality and oil recovery rate.

[0013] (2) The support portion of the present invention is provided with a groove, so that the fluid can enter under the floating plate, so that the floating plate can float better.

[0014] (3) The utility model is provided with a guide column, under the guiding effect of the guide column, the floating plate moves up and down more smoothly.

[0015] Some additional features of the present application may be explained in the following description. Some additional features of the present application will be apparent to those skilled in the art by inspection of the following description and corresponding drawings or understanding of the production or operation of the embodiments. The features disclosed in the present application may be realized and achieved by practice or use of various methods, means and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation of the present application. In each figure, the same reference numeral represents the same component.

[0017] Figure 1 This is a cross-sectional view of the utility model installed on an oil pipe.

[0018] Figure 2 It is a cross-sectional view of the floating plate of the utility model when floating.

[0019] Figure 3 It is a cross-sectional view of the floating plate of the utility model when blocking the fluid inlet.

[0020] Figure 4 This is a cross-sectional view of the utility model when a guide column is provided.

[0021] The reference numerals in the above drawings are: 1-valve body, 2-fluid inlet, 3-float chamber, 4-float plate, 5-groove, 6-fluid outlet, 7-connector, 8-support part, 9-guide column, 10-oil pipe. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0023] Example

[0024] like Figure 1 As shown, this embodiment discloses an oil pipe production device, which includes a valve body 1 and a float plate 4. A float chamber 3 is provided inside the valve body 1, and the float plate 4 is movably arranged inside the float chamber 3. In addition, a fluid inlet 2 and a fluid outlet 6 connected to the float chamber 3 are respectively provided at the upper end and the lower end of the valve body 1, and the total flow area of ​​the fluid outlet 6 is smaller than the total flow area of ​​the fluid inlet 2; in specific settings, the fluid inlet 2 and the fluid outlet 6 can be set to one or more, but it is necessary to ensure that the total flow area of ​​all fluid inlets 2 is greater than the total flow area of ​​all fluid outlets 6. The float plate 4 is horizontally placed inside the float chamber 3, and the flow area between it and the inner wall of the float chamber 3 is greater than the total flow area of ​​all fluid outlets 6. Through the above design, when in use, the fluid enters the float chamber 3 from the fluid inlet 2, and it can be ensured that the fluid fills the float chamber 3.

[0025] In addition, the float plate 4 can move up and down according to the buoyancy of the fluid in the float chamber 3, so as to adjust the distance between the upper surface of the float plate 4 and the fluid inlet 2. When setting it specifically, the material selection of the float plate 4 should take into account the density of oil and water, as well as the suction effect when the fluid flows out of the float chamber 3, to ensure that when the fluid entering the float chamber 3 is oil, the float plate 4 will not rise or the rise amplitude is very small, so that there is a larger fluid channel between the upper surface of the float plate 4 and the fluid inlet 2, so that the production of oil can be stabilized; when the fluid entering the float chamber 3 is a high-water-content oil-water mixture or water, because the density of water is greater than the density of oil, the float plate 4 will rise, reducing the fluid channel between the upper surface of the float plate 4 and the fluid inlet 2, or even directly blocking the fluid inlet 2, such as Figure 2 , 3 As shown, the floating plate 4 can prevent the oil-water mixture with high water content or water from entering the floating chamber, thereby improving the quality of oil production. 3 About material.

[0026] A support portion 8 is provided at the bottom of the float chamber 3, and the diameter of the support portion 8 is smaller than the diameter of the float plate 4; the float plate 4 is supported on the support portion 8. In addition, a plurality of grooves 5 are provided on the upper surface of the support portion 8, which horizontally penetrate the support portion 8. When the fluid fills the float chamber 3, the grooves 5 are also filled with the fluid, that is, the fluid enters the bottom of the float plate 4, so that the float plate 4 can float better.

[0027] like Figure 4As shown, a guide column 9 is vertically connected between the top wall of the floating chamber 3 and the support portion 8, and the floating plate 4 is arranged on the guide column 9, and there is a clearance fit between the floating plate 4 and the guide column 9. The number of guide columns 9 can be set to two, and they are symmetrically located at both ends of the floating plate 4. Under the guiding action of the guide column 9, the floating plate 4 moves up and down more smoothly.

[0028] The valve body 1 is provided with a connector 7, and the connector 7 is provided with a connecting thread. When in use, threaded holes are provided at different positions of the oil production pipe extending into the horizontal well, and the threaded holes are located at the top of the circumference of the oil production pipe 10, such as Figure 1 As shown, the entire oil pipe production device is installed on different sections of the oil pipe through the cooperation of the connecting thread and the threaded hole. Since water may appear in one or more sections in the horizontal well, the oil-water mixture or water with high water content will enter the float chamber of the oil pipe production device located at the section, so that the floating plate 4 in the float chamber floats up to block the fluid inlet 2, preventing the oil-water mixture or water with high water content from continuously entering the oil pipe 10 from the oil pipe production device at the section. Since there is no water appearance in other sections of the horizontal well, oil can continuously enter the oil pipe 10 through the oil pipe production device, thereby improving the oil production quality.

[0029] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0030] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the utility model, and these solutions also belong to the disclosure scope of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. An oil pipe oil production device, characterized in that: include: A valve body (1) is provided with a float cavity (3) therein; and the upper end and the lower end of the valve body (1) are respectively provided with a fluid inlet (2) and a fluid outlet (6) which are in communication with the float cavity (3); the total flow area of ​​all the fluid outlets (6) is smaller than the total flow area of ​​the fluid inlets (2); A floating plate (4) is arranged in the floating chamber (3), and the flow area between the floating plate (4) and the inner wall of the floating chamber (3) is larger than the total flow area of ​​all fluid outlets (6); the floating plate (4) can move up and down according to the buoyancy of the fluid in the floating chamber (3), thereby adjusting the distance between the upper surface of the floating plate (4) and the fluid inlet (2).

2. The oil pipe oil production device according to claim 1, characterized in that: A support portion (8) is provided at the bottom of the floating chamber (3); the diameter of the support portion (8) is smaller than the diameter of the floating plate (4); and the floating plate (4) is supported on the support portion (8).

3. The oil pipe oil production device according to claim 2, characterized in that: The upper surface of the support portion (8) is provided with a plurality of grooves (5) which horizontally penetrate the support portion (8).

4. The oil pipe oil production device according to any one of claims 1 to 3, characterized in that: The valve body (1) is provided with a connecting body (7), and the connecting body (7) is provided with connecting threads.

5. The oil pipe oil production device according to claim 2, characterized in that: A guide column (9) is vertically connected between the top wall of the float chamber (3) and the support portion (8), the float plate (4) is arranged on the guide column (9), and there is a clearance fit between the float plate (4) and the guide column (9).

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