Multistage rotary heating underground injection device

Abstract

The utility model relates to the related technical field of oil extraction equipment, in particular to a multi-stage rotary heating underground injection device which is formed by combining a plurality of rotary heating underground injection devices and comprises an upper short circuit, a pressing cap, a rotating body, a main shaft and a lower short circuit. The upper side end of the pressing cap is connected with the lower side end of the upper pup joint through an upper pup joint connector, and the upper side end of the rotating body is rotationally connected with the lower side end of the pressing cap; the rotary heating underground jetting device is formed by combining an upper short circuit, a pressing cap, a rotating body, a main shaft and a lower short circuit, a fluid cavity is formed in the inner side wall of the rotating body, a second-stage jetting channel and a stress protrusion are arranged at the groove bottom of the fluid cavity, and a first-stage jetting channel is arranged on the main shaft; therefore, fluid columns sprayed out through the first-stage spraying channel form acting force on the stress protrusions, the rotating body generates the self-rotating effect, and the treatment covering effect on an oil layer is better.

Description

Technical Field

[0001] The utility model relates to the technical field related to oil production equipment, in particular to a multi-stage rotary heating downhole jetting device. Background Art

[0002] Oil production engineering is the general term for various engineering and technical measures taken on oil reservoirs through production wells and injection wells according to development goals during oil field exploitation. In oil production engineering, injection devices are required to perform water injection treatment on oil layers;

[0003] The disadvantages of the existing downhole rotary jet device are as follows: 1. The existing continuous oil pipe carries a single-stage rotary jet, the initial equipment investment cost is high, the production and operation cost is also high, and the debugging requires professionals to operate stably, the later equipment maintenance workload is large, and the maintenance cost is high. 2. The existing oil pipe connection rotary jet is to arrange spiral holes on the oil pipe, and the fixed point jet is low in cost but the cleaning effect is not ideal. Therefore, the utility model proposes a multi-stage rotary heating downhole jet device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-stage rotary heating downhole injection device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage rotary heating downhole injection device, the multi-stage rotary heating downhole injection device is composed of a plurality of rotary heating downhole injection devices, and the rotary heating downhole injection device includes:

[0006] Short circuit on top;

[0007] A clamping cap, the upper side end of which is connected to the lower side end of the upper short-circuit through an upper short-circuit joint;

[0008] A rotating body, wherein the upper end of the rotating body is rotatably connected to the lower end of the pressing cap, a fluid cavity is provided on the inner side wall of the rotating body, a secondary injection channel is provided at the groove bottom of the fluid cavity, and a force-bearing protrusion is integrally formed at the groove bottom of the fluid cavity;

[0009] A main shaft, wherein the upper side end of the main shaft is rotatably connected to the rotating body, the upper half of the main shaft is installed in the inner cavity of the rotating body, and a first-level injection channel is opened on the side wall of the upper half of the main shaft;

[0010] A lower short circuit is connected to the lower side end of the main shaft.

[0011] Preferably, the force-bearing protrusion is a protrusion structure with a right-angled triangle cross-section, the first-level injection channel is set to deviate from the axis line of the main axis, and the first-level injection channel is set toward the inclined surface of the force-bearing protrusion, and the first-level injection channel is parallel to the horizontal plane, and the first-level injection channel is at the same height as the middle position of the force-bearing protrusion.

[0012] Preferably, the primary injection channel, the secondary injection channel and the stress-bearing protrusion are arranged in a circle with equal circumference, and the secondary injection channel and the stress-bearing protrusion are arranged in a staggered manner, and the secondary injection channel is arranged corresponding to the oil layer.

[0013] Preferably, when the rotary heating downhole injection device is actually docked, the lower short-circuit of the upper rotary heating downhole injection device and the upper short-circuit of the lower rotary heating downhole injection device are docked via a coupling.

[0014] Preferably, when the rotary heating downhole injection device is actually docked, a wire plug is fixedly connected below the lower short-circuit of the lowest layer of the rotary heating downhole injection device.

[0015] Preferably, a sealing groove is provided on the inner side wall of the upper short circuit near the lower end, and a sealing structure is provided in the sealing groove. The sealing structure is arranged in a ring shape, and the sealing structure is composed of an outer rubber layer and an inner water-absorbing expansion body. The outer rubber layer is coated on the outer side of the inner water-absorbing expansion body, and water diversion holes are provided on the inner side wall of the outer rubber layer. The water diversion holes are evenly arranged in a circle, and the same sealing structure is provided at the connection positions of the clamping cap, rotating body, main shaft, lower short circuit and adjacent structures.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. A rotary heating downhole jet device composed of an upper short-circuit, a clamping cap, a rotating body, a main shaft and a lower short-circuit is provided, a fluid cavity is opened on the inner wall of the rotating body, a secondary jet channel and a force-bearing protrusion are provided at the bottom of the groove of the fluid cavity, and a primary jet channel is provided on the main shaft, so that the fluid column ejected through the primary jet channel forms a force on the force-bearing protrusion, so that the rotating body produces a self-rotating effect, thereby having a better treatment and covering effect on the oil layer;

[0018] 2. The rotating body will generate heat during high-speed rotation to achieve the purpose of heating the oil layer, thereby improving the fluidity of the oil body and thus improving the oil recovery efficiency. The rotating action of the rotating body will also form a vortex to make the dirt quickly gather and settle and easily return, thereby continuously realizing rotary injection to achieve the purpose of self-cleaning of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a short-circuit cross-sectional view of the utility model;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 4 This is a schematic diagram of the structure of the upper short-circuit connector of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the compression cap of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the rotating body of the utility model;

[0025] Figure 7 This is a half-section view of the rotating body of the utility model;

[0026] Figure 8 for Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0027] Fig. 9 This is a schematic diagram of the main shaft structure of the utility model;

[0028] Fig.10 This is a schematic diagram of the lower short-circuit structure of the utility model;

[0029] Fig.11 This is a schematic diagram of the coupling structure of the utility model;

[0030] Fig.12 This is a schematic diagram of the structure of the wire plug of the utility model;

[0031] Fig.13 This is a schematic diagram of the installation of the rotating body of the utility model;

[0032] Fig.14 for Fig.13 A magnified schematic diagram of the structure at C in the middle;

[0033] Fig.15 This is a schematic diagram of the fluid flow of the utility model;

[0034] Fig.16 for Fig.15 Enlarged schematic diagram of the structure at point D in the middle.

[0035] In the figure: upper short-circuit 1, clamping cap 2, rotating body 3, main shaft 4, lower short-circuit 5, upper short-circuit joint 6, coupling 7, thread plug 8, primary injection channel 10, fluid cavity 11, secondary injection channel 12, force-bearing protrusion 13, oil layer 14, outer rubber layer 15, inner water-absorbing expansion body 16, water diversion hole 17. DETAILED DESCRIPTION

[0036] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] See also Figure 1-16 The present invention provides the following three preferred embodiments:

[0038] Embodiment 1

[0039] A multi-stage rotary heating downhole jet device, which is composed of a plurality of rotary heating downhole jet devices, comprises an upper short circuit 1, a clamping cap 2, a rotating body 3, a main shaft 4 and a lower short circuit 5, wherein the upper side end of the clamping cap 2 is connected to the lower side end of the upper short circuit 1 through an upper short circuit joint 6, the upper side end of the rotating body 3 is rotatably connected to the lower side end of the clamping cap 2, a fluid cavity 11 is provided on the inner side wall of the rotating body 3, a secondary jet channel 12 is provided at the bottom of the groove of the fluid cavity 11, and a force-bearing protrusion 13 is integrally formed at the bottom of the groove of the fluid cavity 11, the upper side end of the main shaft 4 is rotatably connected to the rotating body 3, and the upper half of the main shaft 4 is located at the rotating body 3 The main shaft 4 is installed in the inner cavity, and a primary injection channel 10 is opened on the side wall of the upper half of the main shaft 4, and the lower short-circuit 5 is connected to the lower side end of the main shaft 4. A rotary heating downhole injection device composed of an upper short-circuit 1, a clamping cap 2, a rotating body 3, a main shaft 4 and a lower short-circuit 5 is set, and a fluid cavity 11 is opened on the inner wall of the rotating body 3, and a secondary injection channel 12 and a force-bearing protrusion 13 are set at the bottom of the groove of the fluid cavity 11, and a primary injection channel 10 is set on the main shaft 4, so that the fluid column ejected through the primary injection channel 10 forms a force on the force-bearing protrusion 13, so that the rotating body 3 produces a self-rotation effect, thereby having a better treatment and covering effect on the oil layer 14.

[0040] Embodiment 2

[0041] On the basis of embodiment one, the force-bearing protrusion 13 is a protrusion structure with a right-angled triangle cross-section, the first-level injection channel 10 is set to deviate from the axis line of the main axis 4, and the first-level injection channel 10 is set toward the inclined surface of the force-bearing protrusion 13, and the first-level injection channel 10 is parallel to the horizontal plane, and the first-level injection channel 10 is at the same height as the middle position of the force-bearing protrusion 13.

[0042] The primary injection channel 10, the secondary injection channel 12, and the force-bearing protrusion 13 are evenly arranged in a circle, and the secondary injection channel 12 and the force-bearing protrusion 13 are staggered, and the secondary injection channel 12 is arranged corresponding to the oil layer 14, and the rotating body 3 will generate heat during high-speed rotation to achieve the purpose of heating the oil layer, thereby improving the fluidity of the oil body, thereby improving the oil recovery efficiency, and the rotating action of the rotating body 3 will simultaneously form a vortex to make the dirt quickly gather and settle for easy backflow, thereby continuously realizing rotary injection to achieve the self-cleaning purpose of the structure.

[0043] When the rotary heating downhole jet device is actually docked, the lower short-circuit 5 of the upper rotary heating downhole jet device and the upper short-circuit 1 of the lower rotary heating downhole jet device are docked via a coupling 7 .

[0044] When the rotary heating downhole jet device is actually docked, a wire plug 8 is fixedly connected below the lower short-circuit 5 of the lowest layer of the rotary heating downhole jet device.

[0045] Embodiment 3

[0046] On the basis of the second embodiment, a sealing groove is provided on the inner wall of the upper short circuit 1 near the lower end, and a sealing structure is provided in the sealing groove. The sealing structure is arranged in an annular shape, and the sealing structure is composed of an outer rubber layer 15 and an inner water-absorbing expansion body 16. The outer rubber layer 15 is covered on the outer side of the inner water-absorbing expansion body 16, and water diversion holes 17 are provided on the inner wall of the outer rubber layer 15. The water diversion holes 17 are evenly arranged in a circle. The same sealing structure is provided at the connection position of the clamping cap 2, the rotating body 3, the main shaft 4, the lower short circuit 5 and the adjacent structures. The outer rubber layer 15 is pushed outward by the water absorption and expansion of the inner water-absorbing expansion body 16, thereby improving the sealing at the structural connection position.

[0047] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. Multi-stage rotary heating downhole jetting device, characterized in that: The multi-stage rotary heating downhole injection device is composed of a plurality of rotary heating downhole injection devices, and the rotary heating downhole injection device includes: Upper short circuit (1); A clamping cap (2), the upper side end of the clamping cap (2) being connected to the lower side end of the upper short-circuit (1) via an upper short-circuit joint (6); A rotating body (3), the upper side end of the rotating body (3) being rotatably connected to the lower side end of the pressing cap (2), a fluid cavity (11) being provided on the inner side wall of the rotating body (3), a secondary injection channel (12) being provided at the groove bottom of the fluid cavity (11), and a force-bearing protrusion (13) being integrally formed at the groove bottom of the fluid cavity (11); A main shaft (4), the upper side end of the main shaft (4) being rotatably connected to the rotating body (3), the upper half of the main shaft (4) being installed in the inner cavity of the rotating body (3), and a first-level injection channel (10) being provided on the side wall of the upper half of the main shaft (4); A lower short-circuit (5) is connected to the lower end of the main shaft (4).

2. The multi-stage rotary heating downhole injection device according to claim 1 is characterized in that: The force-bearing protrusion (13) is a protrusion structure with a right-angled triangle cross section, the first-level injection channel (10) is set to deviate from the axis of the main axis (4), and the first-level injection channel (10) is set toward the inclined surface of the force-bearing protrusion (13), and the first-level injection channel (10) is parallel to the horizontal plane, and the first-level injection channel (10) and the middle position of the force-bearing protrusion (13) are at the same height.

3. The multi-stage rotary heating downhole injection device according to claim 2 is characterized in that: The primary injection channel (10), the secondary injection channel (12), and the force-bearing protrusion (13) are arranged in a circle with equal circumference, and the secondary injection channel (12) and the force-bearing protrusion (13) are arranged in a staggered manner, and the secondary injection channel (12) and the oil layer (14) are arranged correspondingly.

4. The multi-stage rotary heating downhole injection device according to claim 1 is characterized in that: When the rotary heating downhole jet device is actually docked, the lower short-circuit (5) of the upper rotary heating downhole jet device and the upper short-circuit (1) of the lower rotary heating downhole jet device are docked via a coupling (7).

5. The multi-stage rotary heating downhole injection device according to claim 1 is characterized in that: When the rotary heating downhole jet device is actually docked, a screw plug (8) is fixedly connected below the lower short-circuit (5) of the lowest layer of the rotary heating downhole jet device.

6. The multi-stage rotary heating downhole injection device according to claim 1 is characterized in that: A sealing groove is provided on the inner side wall of the upper short-circuit (1) near the lower end, and a sealing structure is provided in the sealing groove. The sealing structure is arranged in an annular shape and is composed of an outer rubber layer (15) and an inner water-absorbing swelling body (16). The outer rubber layer (15) is arranged to cover the outer side of the inner water-absorbing swelling body (16), and water diversion holes (17) are provided on the inner side wall of the outer rubber layer (15). The water diversion holes (17) are evenly arranged in a circle. The same sealing structure is provided at the connection positions of the clamping cap (2), the rotating body (3), the main shaft (4), the lower short-circuit (5) and the adjacent structures.

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