Thickened oil water plugging device

Abstract

The utility model relates to the technical field of thickened oil water plugging, in particular to a thickened oil water plugging device. The thick oil water plugging device comprises a stirring barrel, a stirring filler structure is installed in the stirring barrel and comprises a driving shaft, the lower end of the driving shaft is rotationally connected to the inner bottom wall of the stirring barrel, a driving motor is fixedly installed on a barrel cover, and the upper end of the driving shaft is fixedly connected with the output end of the driving motor through a coupler. A plurality of stirring rods which are annularly distributed are mounted on the driving shaft, each stirring rod is of a U-shaped structure, and the two ends of each stirring rod are fixed to the driving shaft. According to the utility model, the liquid surfactant is discharged from the discharge port in a high-pressure spraying manner, and can be fully collided and mixed with softened water in combination with the rotation of the stirring rod; and the discharge ports of the adjacent stirring rods face opposite directions, so that softened water on the inner and outer sides of the stirring rods can be simultaneously impacted, the additive is uniformly dispersed, the mixing quality of the foam water plugging base fluid is ensured, and the working efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to thickened oil water plugging technical field especially relates to a thickened oil water plugging device. BACKGROUND

[0002] Thickened oil water plugging is a kind of water control and oil stabilization technology for thickened oil reservoir in high water cut stage in oilfield development, aims at reducing water production and improving thickened oil recovery, and common water plugging technology includes chemical water plugging, particle plugging agent and thickened oil self-plugging effect, and chemical water plugging includes polymer gel system, foam water plugging and resin again.

[0003] In thickened oil water plugging operation, the mixing quality of water plugging agent (such as foam base fluid) directly influences the plugging effect, and conventional stirring device only relies on mechanical rotation, and the stirring time is short, then surfactant is not fully contacted with softened water, resulting in that local concentration is too high or too low, and the stirring time is long, and construction progress is also delayed, the thickened oil water plugging device provided by the public number CN206693983U carries out mixing and stirring to thickened oil and powder surfactant by motor driving stirring rod, and surfactant and other auxiliary agents are all located on thickened oil in the initial adding process, it is difficult to mix uniformly in a short time, resulting in low work efficiency.

[0004] Therefore, it is necessary to provide a new thickened oil water plugging device to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a new thickened oil water plugging device.

[0006] The thickened oil water plugging device provided by the utility model comprises a stirring barrel, a discharge pipe is fixedly installed at the bottom of the stirring barrel, a barrel cover is fixedly installed at the upper end of the stirring barrel, and a feed pipe is fixedly installed on the barrel cover, characterized by:

[0007] A stirring filler structure is installed in the stirring barrel, the stirring filler structure comprises a driving shaft, the lower end of the driving shaft is rotatably connected to the inner bottom wall of the stirring barrel, a driving motor is fixedly installed on the barrel cover, the upper end of the driving shaft is fixedly connected to the output end of the driving motor through a shaft coupling, a plurality of annularly distributed stirring rods are installed on the driving shaft, the stirring rods are in U-shaped structure, the two ends of the stirring rods are fixed to the driving shaft, an inner cavity is formed in the driving shaft, a flow guide cavity is formed in the stirring rod and communicates with the inner cavity, a plurality of vertically distributed discharge ports are formed on the outer wall of the stirring rod and communicate with the flow guide cavity, the discharge ports on the adjacent two stirring rods are oppositely arranged, and a conveying structure for conveying additives to the inner cavity is installed on the stirring barrel.

[0008] Preferably, the conveying structure comprises a conveying pump fixedly installed on the barrel cover, and the input end and the output end of the conveying pump are connected with a material suction pipe and a material conveying pipe respectively, the outer wall of the driving shaft is provided with a through opening communicated with the inner cavity, a sleeve is rotatably connected to the driving shaft, a fixing rod fixedly connected with the inner wall of the stirring barrel is fixedly connected to the outer wall of the sleeve, the sleeve is sleeved on the through opening and seals the through opening, and the material conveying pipe is fixedly connected to the sleeve at the end portion and is communicated with the through opening.

[0009] Preferably, a plurality of connecting rods distributed in annular form are fixedly installed in the through opening.

[0010] Preferably, the lower end of each stirring rod is further provided with another discharging opening communicated with the flow guide cavity, and the discharging opening is located at the end of the flow guide cavity and opens downward.

[0011] Preferably, a sealing cover is installed on the upper end of the feeding pipe, the barrel cover is provided with an exhaust opening, a filter cylinder is installed at the exhaust opening, the filter cylinder comprises a cylinder body filled with activated carbon in the inside and installed at the exhaust opening, and a threaded cover is threadedly connected to the opening at the upper end of the cylinder body.

[0012] Preferably, the sealing cover is threadedly connected with the feeding pipe, and the cylinder body is threadedly connected at the exhaust opening.

[0013] Preferably, the feeding pipe is in S-shaped structure, and the upper end of the feeding pipe opens upward.

[0014] Preferably, a plurality of cushioning feet are fixedly installed at the bottom of the stirring barrel.

[0015] Compared with the related art, the thickened oil water plugging device has the following beneficial effects:

[0016] In the process of configuring and mixing the base fluid, the liquid surfactant is discharged from the discharging opening in the form of high-pressure jetting, and combined with the rotation of the stirring rod, the liquid surfactant can be fully mixed with the softened water; the discharging openings of adjacent stirring rods are oppositely directed, the softened water on the inner and outer sides of the stirring rod can be simultaneously impacted, the additive is uniformly dispersed, the mixing quality of the foam water plugging base fluid is ensured, and the working efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure schematic view of a preferred embodiment of the thickened oil water plugging device provided by the utility model;

[0018] Figure 2 The structure schematic view of a preferred embodiment of the thickened oil water plugging device provided by the utility model; Figure 1 The structure schematic view of a preferred embodiment of the thickened oil water plugging device provided by the utility model;

[0019] Figure 3 The structure schematic view of a preferred embodiment of the thickened oil water plugging device provided by the utility model; Figure 2A part of the stirring filler structure shown in the half-section schematic view;

[0020] Figure 4 For Figure 3 A structure schematic view shown at A;

[0021] Figure 5 For Figure 1 A structure schematic view of the stirring barrel shown;

[0022] Figure 6 For Figure 1 A structure schematic view of the filter cartridge shown.

[0023] Figure label: 1, stirring barrel; 11, foot pad; 12, discharge pipe; 2, barrel cover; 21, feed pipe; 22, sealing cover; 23, exhaust port; 24, filter cartridge; 241, cartridge body; 242, threaded cover; 3, stirring filler structure; 31, drive shaft; 311, inner cavity; 312, through port; 313, connecting rod; 32, drive motor; 33, stirring rod; 331, flow guide cavity; 332, discharge port; 4, conveying structure; 41, sleeve; 42, fixed rod; 43, conveying pump; 44, conveying pipe; 45, suction pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0025] The specific implementation of the present application will be described in detail below with reference to specific embodiments.

[0026] Please refer to Figures 1 to 6 The thick oil water plugging device provided by the embodiment of the present application comprises a stirring barrel 1, a discharge pipe 12 is fixedly installed at the bottom of the stirring barrel 1, a barrel cover 2 is fixedly installed at the upper end of the stirring barrel 1, a feed pipe 21 is fixedly installed on the barrel cover 2, and a plurality of foot pads 11 are fixedly installed at the bottom of the stirring barrel 1 and are distributed around.

[0027] It should be noted that the foot pads 11 elevate the stirring barrel 1, so that the lower end of the discharge pipe 12 is suspended, facilitating subsequent discharge operation, the barrel cover 2 is fixed on the stirring barrel 1 by bolts, and a sealing gasket is added between the two to ensure the sealing of the stirring barrel 1, and the feed pipe 21 is used to guide softened water into the stirring barrel 1 for stirring (the device in the present application is mainly used for foam plugging agent).

[0028] Preferably, the feeding pipe 21 is in S-shaped structure, and the upper end opening of the feeding pipe 21 is arranged upwardly to prevent softened water from splashing out when the softened water is poured from the feeding pipe 21.

[0029] In the embodiment of the utility model, please refer to Figures 1 to 6 The stirring barrel 1 is internally provided with a stirring filler structure 3, the stirring filler structure 3 comprises a driving shaft 31, the lower end of the driving shaft 31 is rotationally connected to the inner bottom wall of the stirring barrel 1, a driving motor 32 is fixedly installed on the barrel cover 2, the upper end of the driving shaft 31 is fixedly connected with the output end of the driving motor 32 through a shaft coupling, a plurality of annularly distributed stirring rods 33 are installed on the driving shaft 31, the stirring rod 33 is in U-shaped structure, both ends of the stirring rod 33 are fixed to the driving shaft 31, an inner cavity 311 is formed in the driving shaft 31, a flow guide cavity 331 is formed in the stirring rod 33 and is in communication with the inner cavity 311, a plurality of vertically distributed discharge ports 332 are formed in the outer wall of the stirring rod 33 and are in communication with the flow guide cavity 331, the discharge ports 332 on the adjacent two stirring rods 33 are oppositely arranged, the stirring barrel 1 is provided with a conveying structure 4 for conveying additives into the inner cavity 311, the conveying structure 4 comprises a conveying pump 43 fixedly installed on the barrel cover 2, a suction pipe 45 and a conveying pipe 44 are respectively connected to the input end and the output end of the conveying pump 43, a through hole 312 is formed in the outer sidewall of the driving shaft 31 and is in communication with the inner cavity 311, a sleeve 41 is rotationally connected to the driving shaft 31, a fixing rod 42 is fixedly connected to the outer sidewall of the sleeve 41 and is fixedly connected to the inner wall of the stirring barrel 1, the sleeve 41 is sleeved on the through hole 312 and seals the through hole 312, and the conveying pipe 44 is fixedly connected to the sleeve 41 and is in communication with the through hole 312.

[0030] It should be noted that: softened water into the stirring barrel 1, the opening on the stirring barrel 1, such as the opening of the feed pipe 21, need to be closed, to prevent liquid splash out, fixed rod 42 will sleeve 41 is limited to stirring barrel 1 inside can't move, drive motor 32 drive drive shaft 31 with stirring rod 33 to the softened water for continuous stirring, in the process of adding liquid surfactant, conveying pump 43 through the suction pipe 45 to the outside of the liquid surfactant to be added suction, liquid surfactant through the material conveying pipe 44, through the mouth 312 conveying to the inner cavity 311 of drive shaft 31, liquid surfactant along the inner cavity 311 into the flow guide cavity 331 inside the stirring rod 33, because the stirring rod 33 outside wall is provided with small diameter discharge port 332, under the strong action of conveying pump 43, liquid surfactant will be ejected from the discharge port 332, the liquid surfactant ejected with stirring rod 33 rotation uniform dispersion to the softened water, small diameter discharge port 332 under the strong action of conveying pump 43 forms the state of ejection, so that the liquid surfactant in the form of high pressure and softened water, increase the collision and mixing degree of both, improve the mixing effect of liquid surfactant, at the same time, because the adjacent stirring rod 33 on the discharge port 332 is opposite, that is, one is outward, one is inward, can make the liquid surfactant respectively to the inside and outside of the stirring rod 33 softened water impact, make the liquid surfactant evenly dispersed to the softened water, ensure the mixing quality of foam water blocking base fluid, high work efficiency;

[0031] In order to improve the mixing efficiency, after the quantitative liquid surfactant is conveyed, the conveying pump 43 continues to work, conveying air in the stirring barrel 1, the air coming out of the discharge port 332 forms bubbles in the mixed liquid, the bubbles further stir the liquid in the rising process, on the one hand, it can promote the secondary mixing of liquid surfactant and softened water, on the other hand, it can strengthen the reaction environment inside the liquid through the disturbance caused by bubble rupture, so that the liquid surfactant and softened water are mixed fully, improve the reaction effect, reduce the reaction time to improve the work efficiency.

[0032] The subsequent PH adjustment can be directly added from the feed pipe 21, and the water agent stabilizing agent can also be conveyed into the stirring barrel 1 by the same way of conveying pump 43 conveying liquid surfactant for mixing and stirring.

[0033] In order to improve the structural strength of the drive shaft 31 at the opening 312, a plurality of annularly distributed connecting rods 313 are fixedly installed in the opening 312; these connecting rods 313 can effectively enhance the mechanical strength of the weak link while ensuring the smooth flow of fluid.

[0034] Preferably, the lower end of each stirring rod 33 is further provided with another discharge port 332 in communication with the flow guide cavity 331, and the discharge port 332 is located at the end of the flow guide cavity 331 and opens downward, the lower discharge port 332 can guide the mixed liquid entering the inside of the flow guide cavity 331, preventing the mixed liquid from remaining in the inside of the stirring rod 33.

[0035] In the embodiment of the utility model, please refer to Figures 1 to 6 The upper end of the feeding pipe 21 is provided with a sealing cover 22, the bucket cover 2 is provided with an exhaust port 23, and the exhaust port 23 is provided with a filter cartridge 24, the filter cartridge 24 comprises a cartridge body 241 provided at the exhaust port 23 and filled with activated carbon inside, and the upper end of the cartridge body 241 is provided with a threaded cover 242;

[0036] It should be noted that: the feeding pipe 21 is sealed by the sealing cover 22, some thickened water blocking base fluid may generate gases containing odors or harmful components (for example, sulfonate surfactant + strong acid (such as HCl) → may release SO2 (sulfur dioxide); sulfur-containing foam stabilizer + oxidizing agent → generate H2S (hydrogen sulfide, highly toxic) during the configuration process, the filter cartridge 24 at the exhaust port 23 can adsorb and filter these gases by filling activated carbon inside, reduce the direct discharge of harmful components to the external environment, protect the health of the operator, and reduce the pollution to the surrounding environment, the threaded cover 242 is screwed on the cartridge body 241, facilitating the replacement of activated carbon.

[0037] Preferably, the sealing cover 22 is screwed on the feeding pipe 21, facilitating the opening and sealing of the upper end opening of the feeding pipe 21, and the cartridge body 241 is screwed at the exhaust port 23, facilitating the connection and sealing between the filter cartridge 24 and the exhaust port 23.

[0038] The circuit and control involved in the utility model are prior art, and will not be described in detail here.

[0039] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, any equivalent structure or equivalent process conversion using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A thickened oil water plugging device, comprising a stirring barrel (1), a discharge pipe (12) is fixedly installed at the bottom of the stirring barrel (1), a barrel cover (2) is fixedly installed at the upper end of the stirring barrel (1), and a feeding pipe (21) is fixedly installed on the barrel cover (2), characterized in that: a stirring filler structure (3) is installed inside the stirring barrel (1), the stirring filler structure (3) comprises a driving shaft (31), the lower end of the driving shaft (31) is rotatably connected to the inner bottom wall of the stirring barrel (1), a driving motor (32) is fixedly installed on the barrel cover (2), the upper end of the driving shaft (31) is fixedly connected to the output end of the driving motor (32) through a shaft coupling, a plurality of annularly distributed stirring rods (33) are installed on the driving shaft (31), the stirring rods (33) are in U-shaped structure, both ends of the stirring rods (33) are fixed to the driving shaft (31), an inner cavity (311) is formed in the driving shaft (31), and a flow guide cavity (331) is formed in the stirring rod (33) and communicates with the inner cavity (311), a plurality of vertically distributed discharge ports (332) are formed in the outer wall of the stirring rod (33) and communicate with the flow guide cavity (331), the discharge ports (332) on adjacent two stirring rods (33) are oppositely arranged, and a conveying structure (4) for conveying additives into the inner cavity (311) is installed on the stirring barrel (1).

2. The heavy oil water shutoff device of claim 1, wherein, The conveying structure (4) comprises a conveying pump (43) fixedly installed on the barrel cover (2), a suction pipe (45) and a conveying pipe (44) are connected to the input end and the output end of the conveying pump (43) respectively, a through hole (312) is formed in the outer sidewall of the driving shaft (31) and communicates with the inner cavity (311), a sleeve (41) is rotatably connected to the driving shaft (31), a fixing rod (42) fixedly connected to the inner wall of the stirring barrel (1) is fixedly connected to the outer sidewall of the sleeve (41), the sleeve (41) is sleeved on the through hole (312) and seals the through hole (312), and the end of the conveying pipe (44) is fixedly connected to the sleeve (41) and communicates with the through hole (312).

3. The heavy oil water shutoff device of claim 2, wherein, A plurality of annularly distributed connecting rods (313) are fixedly installed in the through hole (312).

4. The heavy oil water shutoff device of claim 1, wherein, Another discharge port (332) that communicates with the flow guide cavity (331) is also formed in the lower end of each stirring rod (33), and the discharge port (332) is located at the end of the flow guide cavity (331) and opens downward.

5. The heavy oil water shutoff device of claim 1, wherein, A sealing cover (22) is installed at the upper end of the feeding pipe (21), an exhaust port (23) is formed in the barrel cover (2), a filter cartridge (24) is installed at the exhaust port (23), the filter cartridge (24) comprises a cartridge body (241) filled with activated carbon and installed at the exhaust port (23), and a threaded cover (242) is threadedly connected to the upper end opening of the cartridge body (241).

6. The heavy oil water shutoff device of claim 5, wherein, The sealing cover (22) is threadedly connected to the feeding pipe (21), and the cartridge body (241) is threadedly connected to the exhaust port (23).

7. The heavy oil water shutoff device of claim 1, wherein, The feeding pipe (21) is in S-shaped structure, and the upper end opening of the feeding pipe (21) is arranged upwards.

8. The heavy oil water shutoff device of claim 1, wherein, A plurality of pad feet (11) are fixedly installed at the bottom of the stirring barrel (1).

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