Reverse fracturing sand control well completion integrated device

Abstract

The utility model provides a reverse fracturing sand control well completion integrated device, which relates to the technical field of well completion equipment, and comprises a casing pipe and an oil pipe column, a packer is arranged on the surface of the oil pipe column, a fine air nozzle is arranged on the surface of the oil pipe column, a reverse fracturing tool is arranged at the bottom of the oil pipe column, and a vibration ring is arranged on the surface of the oil pipe column. A vibration cavity is formed in the vibration ring, a vibration motor is arranged in the vibration cavity, an eccentric block is arranged at the output end of the vibration motor, the vibration ring, the vibration cavity, the vibration motor and the eccentric block are adopted, the vibration motor and the eccentric block are installed in the vibration cavity through an installation plate and an installation bolt, and the vibration motor is controlled to be turned on; excitation force is obtained through centrifugal force generated by high-speed rotation of the shaft and the eccentric block, so that vibration force is generated, the vibration ring is driven to vibrate, then the fine air nozzle is vibrated, when the fine air nozzle passes through a soil layer with large particles, the fine air nozzle is effectively prevented from being blocked by the particles through vibration of the fine air nozzle, and oil gas can conveniently enter an oil pipe column.

Description

Technical Field

[0001] The utility model relates to the technical field of well completion equipment, in particular to an integrated reverse fracturing and sand control well completion device. Background Art

[0002] Generally, for heavy oil reservoirs (especially oil sands) that need to be drilled and mined, special completion technologies different from conventional oil are required, because these reservoirs are basically distributed within a vertical depth of several hundred meters, and most of the reservoirs are loose sandstones. It is difficult to achieve good completion results using conventional completion methods. Therefore, the discussion of completion technology for heavy oil reservoirs usually refers to sand control completion technology. In the field of petroleum, fracturing refers to a method of using hydraulic force to form cracks in oil and gas layers during oil or gas production, also known as hydraulic fracturing. Fracturing is to artificially create cracks in the formation, improve the flow environment of oil underground, and increase the production of oil wells. It can play an important role in improving the flow conditions at the bottom of the oil well, slowing down the interlayer and improving the utilization of the oil layer. In oil drilling operations, screen pipes are an important equipment, and the main function of screen pipes is sand control.

[0003] During operation, the existing integrated reverse fracturing and sand control completion device cannot match the sand size with the hole diameter. In soil layers with different sand sizes, larger sand particles will block the holes, preventing oil and gas from entering the pipeline through the holes, which is not conducive to oil extraction. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a reverse fracturing sand control well completion integrated device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a reverse fracturing and sand control completion integrated device, including casing and an oil tubing string, the surface of the oil tubing string is provided with a packer, the surface of the oil tubing string is provided with a fine gas nozzle, the bottom of the oil tubing string is provided with a reverse fracturing tool, the surface of the oil tubing string is provided with a vibration ring, the interior of the vibration ring is provided with a vibration cavity, the interior of the vibration cavity is provided with a vibration motor, and the output end of the vibration motor is provided with an eccentric block.

[0006] Preferably, a through hole is formed on the surface of the sleeve, and the position of the through hole corresponds to the fine air nozzle.

[0007] Preferably, a mounting plate is provided inside the vibration chamber, and a mounting bolt is provided on the surface of the mounting plate.

[0008] Preferably, the oil pipe string is connected to the vibration ring by a spline, and the vibration ring is located at the bottom of the packer.

[0009] Preferably, the vibration motor and the eccentric mass are connected to the vibration ring via a mounting plate, and the vibration motor and the eccentric mass are axially symmetrically arranged inside the vibration ring.

[0010] Preferably, the fine gas nozzles are in a trapezoidal shape, and are arranged in a linear array on the surface of the oil pipe string.

[0011] Preferably, the fine air nozzles are arranged in a circular array in multiple groups, and the fine air nozzles are located at the bottom of the vibration ring. Beneficial Effects

[0012] In the utility model, a vibration ring, a vibration cavity, a vibration motor and an eccentric block are adopted. The vibration motor and the eccentric block are installed in the vibration cavity through a mounting plate and a mounting bolt. The vibration motor is controlled to open, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric block is used to obtain an exciting force, thereby generating a vibration force, driving the vibration ring to vibrate, and then vibrating the fine air nozzle. When passing through a soil layer with larger particles, the fine air nozzle is vibrated, thereby effectively avoiding the blockage of the fine air nozzle by the particles, and facilitating the oil and gas to enter the oil pipe column. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front cross-sectional view of the utility model;

[0014] Figure 2 A three-dimensional diagram of the oil pipe string of the utility model;

[0015] Figure 3 For this utility model Figure 1 A magnified view of middle;

[0016] Figure 4 It is a top cross-sectional view of the vibration ring of the utility model;

[0017] Figure 5 It is a three-dimensional diagram of the vibration motor of the present utility model.

[0018] Legend:

[0019] 1. Casing; 2. Tubing string; 3. Packer; 4. Vibration ring; 5. Reverse fracturing tool; 6. Fine air nozzle; 7. Vibration motor; 8. Eccentric block; 9. Mounting plate; 10. Vibration chamber; 11. Mounting bolt; 12. Through hole. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0021] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiments

[0022] Reference Figure 1-5 A reverse fracturing and sand control well completion integrated device comprises a casing 1 and an oil pipe string 2. A through hole 12 is provided on the surface of the casing 1, and the position of the through hole 12 corresponds to a fine gas nozzle 6. Through the setting of the through hole 12, it is convenient to introduce the oil layer into the casing 1. A packer 3 is provided on the surface of the oil pipe string 2. Through the setting of the packer 3, different oil layers, gas layers or water layers in the well can be separated to prevent them from mixing with each other. A fine gas nozzle 6 is provided on the surface of the oil pipe string 2. The fine gas nozzle 6 is trapezoidal in shape, and the fine gas nozzle 6 is arranged on the surface of the oil pipe string 2 in a linear array. There are multiple groups of fine gas nozzles 6 in a circular array, and the fine gas nozzle 6 is located at the bottom of a vibration ring 4. Through the setting of the fine gas nozzle 6, it is convenient for oil and gas to enter the interior of the oil pipe string 2, which is conducive to the completion of oil extraction. A reverse fracturing tool 5 is provided at the bottom of the oil pipe string 2. Through the setting of the reverse fracturing tool 5, it is convenient to form cracks and holes in the oil and gas layers. A vibration ring 4 is provided on the surface of the oil pipe string 2. The oil pipe string 2 and the vibration ring 4 are splined. The spline connection is convenient for the vibration ring 4 to vibrate. The vibration ring 4 is located at the bottom of the packer 3. A vibration cavity 10 is provided inside the vibration ring 4. A vibration motor 7 is provided inside the vibration cavity 10. An eccentric block 8 is provided at the output end of the vibration motor 7. The vibration motor 7 and the eccentric block 8 are installed in the vibration cavity 10 through a mounting plate 9 and a mounting bolt 11. The vibration motor 7 is controlled to open, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric block 8 is used to obtain an exciting force, thereby generating a vibration force. A mounting plate 9 is provided inside the vibration cavity 10, and a mounting bolt 11 is provided on the surface of the mounting plate 9. The vibration motor 7 and the eccentric block 8 are connected to the vibration ring 4 through the mounting plate 9, and the vibration motor 7 and the eccentric block 8 are axially symmetrically arranged inside the vibration ring 4. The vibration balance of the vibration ring 4 is ensured by the axially symmetrically arranged vibration motor 7 and eccentric block 8.

[0023] By opening the reverse fracturing tool 5, the reverse fracturing of the gas layer is started, the pressure is gradually increased to form clear cracks and pores, the fine gas nozzle 6 is opened, the cracks and pores are pressurized, and the bottom layer is completed, the vibration motor 7 is controlled to open, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric block 8 is used to obtain the exciting force, thereby generating a vibration force, driving the vibration ring 4 to vibrate, thereby vibrating the fine gas nozzle 6, thereby effectively avoiding the blockage of the fine gas nozzle 6 by particles, and facilitating the oil and gas to enter the oil pipe string 2. Specific embodiments

[0024] Reference Figure 1-5 On the premise of satisfying the above structure, a screen tube can be arranged on the surface of the tubing string 2, and the screen tube is rotatably connected to the tubing string 2, the position of the screen tube corresponds to the fine gas nozzle 6, and two sizes of apertures are provided on the surface of the screen tube. By rotating the screen tube, the holes of different apertures correspond to the fine gas nozzle 6, thereby changing the aperture of the hole entering the tubing string 2, and using it in conjunction with the vibration motor 7 and the eccentric block 8, the blockage of the fine gas nozzle 6 is effectively avoided.

[0025] In summary:

[0026] 1. The vibration ring 4, the vibration cavity 10, the vibration motor 7 and the eccentric block 8 are adopted, and the vibration motor 7 and the eccentric block 8 are installed in the vibration cavity 10 through the mounting plate 9 and the mounting bolt 11. The vibration motor 7 is controlled to be turned on, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric block 8 is used to obtain the exciting force, thereby generating the vibration force, driving the vibration ring 4 to vibrate, and then vibrating the fine air nozzle 6. When passing through the soil layer with larger particles, the fine air nozzle 6 is vibrated, thereby effectively avoiding the blockage of the fine air nozzle 6 by the particles, so that the oil and gas can enter the oil pipe string 2 easily.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A reverse fracturing and sand control well completion integrated device, comprising a casing (1) and a tubing string (2), characterized in that: A packer (3) is provided on the surface of the oil tubing string (2), a fine gas nozzle (6) is provided on the surface of the oil tubing string (2), a reverse fracturing tool (5) is provided at the bottom of the oil tubing string (2), a vibration ring (4) is provided on the surface of the oil tubing string (2), a vibration cavity (10) is provided inside the vibration ring (4), a vibration motor (7) is provided inside the vibration cavity (10), and an eccentric block (8) is provided at the output end of the vibration motor (7).

2. The reverse fracturing and sand control well completion integrated device according to claim 1, characterized in that: A through hole (12) is provided on the surface of the sleeve (1), and the position of the through hole (12) corresponds to the fine air nozzle (6).

3. The reverse fracturing and sand control well completion integrated device according to claim 1, characterized in that: A mounting plate (9) is provided inside the vibration chamber (10), and a mounting bolt (11) is provided on the surface of the mounting plate (9).

4. The reverse fracturing and sand control well completion integrated device according to claim 1, characterized in that: The oil pipe string (2) and the vibration ring (4) are connected by splines, and the vibration ring (4) is located at the bottom of the packer (3).

5. The reverse fracturing and sand control well completion integrated device according to claim 3, characterized in that: The vibration motor (7) and the eccentric block (8) are connected to the vibration ring (4) via a mounting plate (9), and the vibration motor (7) and the eccentric block (8) are axially symmetrically arranged inside the vibration ring (4).

6. The reverse fracturing and sand control well completion integrated device according to claim 1, characterized in that: The fine gas nozzles (6) are in a trapezoidal shape, and are arranged in a linear array on the surface of the oil pipe string (2).

7. The reverse fracturing and sand control well completion integrated device according to claim 1, characterized in that: The fine air nozzles (6) are arranged in a plurality of groups in a circular array, and the fine air nozzles (6) are located directly at the bottom of the vibration ring (4).

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