Pitching profile control and water injection integrated tubular column

Abstract

The utility model relates to the technical field of separated layer water injection of oil field wells, in particular to a ball injection profile control and water injection integrated pipe column. The ball injection profile control and water injection integrated pipe column comprises a mounting disc, an opening ring pipe is fixedly mounted on the mounting disc, profile control selective plugging balls are stored in the opening ring pipe, one end of the opening ring pipe is of a sealed structure, the other end of the opening ring pipe is fixedly connected with a launching pipe, and a compensation assembly used for discharging the profile control selective plugging balls is arranged in the opening ring pipe. And an intermittent transmitting stopper is mounted on the transmitting tube. According to the ball injection profile control and water injection integrated tubular column, profile control selective plugging balls are pushed to be arranged in order through an arc-shaped spring in the compensation assembly, accumulation is avoided, the servo motor drives the rotating disc and the linkage rod to control the front ball blocking plate and the rear ball blocking plate to ascend and descend alternately, single profile control selective plugging balls are released in order, and the profile control selective plugging balls are prevented from being stacked. And the phenomenon that the shot hole cannot be plugged due to mutual obstruction of the profile control plugging balls is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oilfield well separate layer water injection, especially relates to a ball injection profile control and water injection integrated pipe column. BACKGROUND

[0002] Ball injection profile control technology is mainly applied to thermal recovery wells of heavy oil reservoirs to solve the problem of uneven interlayer steam absorption caused by casing deformation and improve the effect of steam stimulation, and a metal ball with a diameter larger than the diameter of the perforation is used. When steam injection, the metal ball directly blocks the perforation of the high permeability layer with the steam flow, preventing the steam from entering and completing the profile control in the wellbore. In recent years, this technology has also been used to block the perforation of high permeability layers in injection wells, thereby blocking the water injection channel, and for wellbore plugging, it is a homogeneous rigid plastic ball with a diameter slightly larger than the perforation that flows synchronously with the injected water in the layer with a large water absorption in the injection well. Under the action of the injection pressure difference, it is pressed against the perforation to block it, allowing the injected water to flow to and enter other layers. In the prior art, only the required injection allocation can be distributed to each layer according to the design requirements. Since there is no external ball container, it is not possible to bring the injection ball profile control and blocking ball to the injection layer, implement the injection of the injection ball profile control and blocking ball, and even more impossible to implement the injection ball profile control in the separate layer section.

[0003] To solve this problem, in the patent document with publication number CN202467796 U, a ball containing basket is used to store the profile control and blocking ball, and the inner cavity of the ball containing basket is connected with the water outlet of the water distributor. The injected water enters the ball containing basket containing the injection ball profile control and blocking ball through the water nozzle. Under the action of water pressure, the shear pins of the baffle at the lower part of the ball containing basket are sheared, allowing the injection ball profile control and blocking ball to come out of the ball containing basket and enter the perforation that needs to be blocked in the fine layer section along with the water flow. However, the injection ball profile control and blocking ball stored in the ball containing basket enters the fine layer section along with the water flow under the action of water pressure, which easily causes the injection ball profile control and blocking ball to accumulate at the outlet of the ball containing basket, resulting in blockage. Moreover, the simultaneous discharge of many injection ball profile control and blocking balls can cause some injection ball profile control and blocking balls to gather together, which hinders the injection ball profile control and blocking ball and affects the perforation blocking effect.

[0004] To solve the above problems, it is necessary to improve the structure of the ball containing basket based on the structure of the patent document with publication number CN202467796 U to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a ball injection profile control and water injection integrated pipe column.

[0006] The utility model provides a throw ball profile control and water injection integration pipe column, including installation disc, the open ring pipe is fixedly installed on the installation disc, and the open ring pipe stores the profile control and selects the ball of blocking, the one end of open ring pipe is the closed end structure, and the other end of open ring pipe is fixedly connected with the launching tube,

[0007] The open ring pipe is provided with a compensation assembly for discharging the profile control and blocking ball.

[0008] The launching tube is provided with an intermittent blocking device, and the intermittent blocking device comprises a rotating plate, the middle plate body of the rotating plate is rotatably installed in the installation cavity formed in the bottom of the launching tube through a support, front and rear blocking ball plates are rotatably installed on the rotating plates on both sides of the support, and the front and rear blocking ball plates are respectively inserted into and slidably connected with the two sliding cavities formed in the bottom of the launching tube.

[0009] The intermittent blocking device further comprises a linkage rod for driving the front and rear blocking ball plates to alternately ascend and descend.

[0010] Preferably, a servo motor is fixedly installed on the support, an output end of the servo motor is fixedly installed with a rotating disc, a guide rod is fixedly installed at a position deviated from the center of the rotating disc, one end of the linkage rod is sleeved on the guide rod and rotatably connected with the guide rod, and the other end of the linkage rod is rotatably connected with the rotating plate on one side of the support through a rotating seat.

[0011] Preferably, the compensation assembly comprises an arc spring, the arc spring is installed in the open ring pipe, one end of the arc spring is fixedly connected with the closed end of the open ring pipe, the other end of the arc spring is fixedly installed with an abutting disc, and the abutting disc is located in the open ring pipe and slidably connected with the open ring pipe.

[0012] Preferably, the top of the abutting disc is fixedly installed with two arc-shaped guide pieces symmetrically distributed, and the two arc-shaped guide pieces pass through the annular groove formed on the pipe surface of the open ring pipe and are slidably connected with the outer pipe wall of the open ring pipe.

[0013] Preferably, the open ring pipe is provided with a ball-throwing hole for throwing the profile control and blocking ball, and the ball-throwing hole is close to one end of the closed end of the open ring pipe.

[0014] Preferably, a fixing sleeve is fixedly installed on the inner cavity wall of the installation disc.

[0015] Compared with the related art, the utility model provides the throw ball profile control and water injection integration pipe column has the following beneficial effects:

[0016] The utility model discloses a compensation assembly's arc spring promotes the orderly arrangement of profile control and plugging ball selection, avoids the accumulation, and by servo motor drive rotating disc, linkage link control pre -position ball -stopping board and post -position ball -stopping board alternate lifting, realizes profile control and plugging ball selection single orderly release, avoids the phenomenon that profile control and plugging ball selection hinder each other and leads to the phenomenon that cannot be blocked. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A preferred embodiment structure schematic view of the ball injection profile control and water injection integrated pipe column is provided in the utility model, and the ball injection profile control and water injection integrated pipe column comprises an installation disc 1, an open ring pipe 2, a compensation assembly 5 and an intermittent blocking device 6.

[0018] Figure 2 A preferred embodiment structure schematic view of the ball injection profile control and water injection integrated pipe column is provided in the utility model, and the ball injection profile control and water injection integrated pipe column comprises an installation disc 1, an open ring pipe 2, a compensation assembly 5 and an intermittent blocking device 6.

[0019] Figure 3 A Figure 1 The sectional structure schematic view of the open ring pipe and the launching pipe is shown.

[0020] Figure 4 A Figure 3 The structure schematic view of the intermittent blocking device is shown.

[0021] In the drawing, 1, mounting disc; 11, fixed sleeve; 2, open ring pipe; 2a, annular groove; 2b, ball injection hole; 3, launching pipe; 3a, installation cavity; 4, profile control and plugging ball; 5, compensation assembly; 51, arc spring; 52, abutting disc; 53, arc-shaped guide piece; 6, intermittent blocking device; 61, rotating plate; 62, pre-position ball-stopping board; 63, post-position ball-stopping board; 64, servo motor; 65, rotating disc; 66, guide rod; 67, linkage link; 68, support. DETAILED DESCRIPTION

[0022] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is in combination with the drawing and example, and the utility model is further detailedly explained.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0023] The specific implementation of the utility model is described in detail in combination with specific embodiments.

[0024] Please refer to Figures 1 to 4 The utility model discloses a ball injection profile control and water injection integrated pipe column, the ball injection profile control and water injection integrated pipe column includes installation disc 1, open ring pipe 2, compensation assembly 5 and intermittent blocking device 6, and the fixed sleeve 11 is fixedly installed on the inner cavity wall of installation disc 1, the fixed sleeve 11 is set to the water injection well injection ball injection profile control and water injection device in the patent literature of CN202467796U and replaces the ball containing basket in the patent.

[0025] In the embodiment of the utility model, please refer to Figures 1 to 4 , the open ring pipe 2 is fixedly installed on the installation disc 1, and the open ring pipe 2 stores the profile control and plugging ball 4, one end of the open ring pipe 2 is the closed structure, and the other end of the open ring pipe 2 is fixedly connected with the launching tube 3;

[0026] The open ring pipe 2 is provided with the compensation assembly 5 for the external profile control and plugging ball 4, and the compensation assembly 5 includes the arc spring 51, the arc spring 51 is installed in the open ring pipe 2, one end of the arc spring 51 is fixedly connected with the closed end of the open ring pipe 2, the other end of the arc spring 51 is fixedly installed with the abutting disc 52, and the abutting disc 52 is located in the open ring pipe 2 and is slidably connected with the open ring pipe 2.

[0027] Need to be explained: when filling the profile control and plugging ball 4, the abutting disc 52 is driven to slide along the open ring pipe 2 and slide through the ball throwing hole 2b by rotating the arc-shaped guide piece 53, and then the profile control and plugging ball 4 is placed in the open ring pipe 2 from the ball throwing hole 2b (because the front or rear ball blocking plate 62 or 63 blocks the pipe opening of the launching tube 3, so that the profile control and plugging ball 4 will not slide out of the launching tube 3), then the arc-shaped guide piece 53 is loosened, so that the abutting disc 52 is driven to all profile control and plugging balls 4 under the action of the elastic force of the arc spring 51 to be in the abutting state, so that the arc spring 51 in the compensation assembly 5 pushes the profile control and plugging ball 4 to arrange in order, avoiding accumulation.

[0028] Further, the top of the abutting disc 52 is fixedly installed with two symmetrical arc-shaped guide pieces 53, and the two arc-shaped guide pieces 53 pass through the annular groove 2a formed on the pipe surface of the open ring pipe 2 and are slidably connected with the outer pipe wall of the open ring pipe 2, and the arc-shaped guide piece 53 improves the stability of the abutting disc 52 in the open ring pipe 2, and on the other hand, the abutting disc 52 is driven to slide along the open ring pipe 2 and compress the arc spring 51 by rotating the arc-shaped guide piece 53.

[0029] Further, the open ring pipe 2 is provided with the ball throwing hole 2b for throwing the profile control and plugging ball 4, and the ball throwing hole 2b is close to one end of the open ring pipe 2, so as to facilitate filling the profile control and plugging ball 4 in the open ring pipe 2, when filling the profile control and plugging ball 4, the abutting disc 52 is driven to slide along the open ring pipe 2 and pass through the ball throwing hole 2b, and then the profile control and plugging ball 4 is placed in the open ring pipe 2 from the ball throwing hole 2b.

[0030] In the embodiment of the utility model, please refer to Figures 1 to 4The intermittent blocking device 6 is installed on the launching tube 3, and comprises a rotating plate 61, the middle plate body of the rotating plate 61 is rotatably installed in the installation cavity 3a opened at the bottom of the launching tube 3 through a support 68, and the rotating plate 61 on both sides of the support 68 is respectively installed with a front blocking ball plate 62 and a rear blocking ball plate 63 connected in rotation, the front blocking ball plate 62 and the rear blocking ball plate 63 are respectively inserted in and slidably connected with the two sliding cavities opened at the bottom of the launching tube 3.

[0031] The intermittent blocking device 6 further comprises a linkage rod 67 for driving the front blocking ball plate 62 and the rear blocking ball plate 63 to alternately lift and drop, a servo motor 64 is fixedly installed on the support 68, a rotating disc 65 is fixedly installed at the output end of the servo motor 64, a guide rod 66 is fixedly installed at the position deviated from the disc center of the rotating disc 65, one end of the linkage rod 67 is sleeved on the guide rod 66 and connected in rotation with the guide rod 66, and the other end of the linkage rod 67 is connected in rotation with the rotating plate 61 on one side of the support 68 through a rotating seat.

[0032] It should be noted that: the servo motor 64 is started, so that the guide rod 66 on the rotating disc 65 drives the linkage rod 67 to continuously push up and pull down the connecting plate surface of the rotating plate 61, so that the front blocking ball plate 62 and the rear blocking ball plate 63 on the rotating plate 61 can alternately lift and drop; if the rear blocking ball plate 63 slides out of the launching tube 3, the front blocking ball plate 62 slides into the launching tube 3, and the first profile control blocking ball 4 is slid to the position between the front blocking ball plate 62 and the rear blocking ball plate 63 under the pushing force of the abutting disc 52 and abuts against the front blocking ball plate 62; with the front blocking ball plate 62 and the rear blocking ball plate 63 alternately lifting and dropping, the front blocking ball plate 62 slides out of the launching tube 3, and the rear blocking ball plate 63 slides into the launching tube 3, so that the first profile control blocking ball 4 can slide out of the launching tube 3 and abut against the perforation under the action of the water injection pressure difference.

[0033] It should be noted that: in order to avoid the servo motor 64 from being invalid due to the high temperature, high pressure and corrosive environment in the well, a sealing protective cover (not shown) for the servo motor 64 is additionally arranged on the support 68, the sealing protective cover adopts a corrosion-resistant alloy shell, and is filled with inert gas in the sealing protective cover to isolate the external medium, and the arc spring 51 is selected from a high fatigue strength material (such as 316L stainless steel), and a wear monitoring mark is arranged on the abutting disc 52, so as to be replaced regularly.

[0034] In the present application, the arc spring 51 in the compensation assembly 5 pushes the profile control blocking ball 4 to arrange in order to avoid accumulation, the servo motor 64 drives the rotating disc 65, and the linkage rod 67 controls the front blocking ball plate 62 and the rear blocking ball plate 63 to alternately lift and drop, so as to realize the orderly release of the profile control blocking ball 4, and avoid the phenomenon that the profile control blocking ball 4 hinders each other and causes the perforation to be unable to be blocked.

[0035] The working principle of the ball injection profile control and water injection integrated pipe column is as follows:

[0036] In the initial state, the front ball baffle 62 and the rear ball baffle 63 are in a raised state, so that the front ball baffle 62 or the rear ball baffle 63 blocks the pipe opening of the launching tube 3.

[0037] When the profile control and plugging ball 4 is filled, the arc-shaped guide piece 53 is rotated to drive the abutting disc 52 to slide along the open ring tube 2 and slide through the ball injection hole 2b, and then the profile control and plugging ball 4 is placed into the open ring tube 2 from the ball injection hole 2b (since the front ball baffle 62 or the rear ball baffle 63 blocks the pipe opening of the launching tube 3, the profile control and plugging ball 4 will not slide out of the launching tube 3), and then the arc-shaped guide piece 53 is loosened, so that the abutting disc 52 is driven by the elastic force of the arc-shaped spring 51 to drive all the profile control and plugging balls 4 to be in an abutting state.

[0038] When the water injection well injection ball profile control special water distributor is placed in the water injection well, the servo motor 64 is started, so that the guide rod 66 on the rotating disc 65 drives the linkage rod 67 to continuously push up and pull down the connecting plate surface of the rotating plate 61, so that the front ball baffle 62 and the rear ball baffle 63 on the rotating plate 61 can be alternately lifted.

[0039] If the rear ball baffle 63 slides out of the launching tube 3, the front ball baffle 62 slides into the launching tube 3, and the first profile control and plugging ball 4 slides to the position between the front ball baffle 62 and the rear ball baffle 63 under the pushing force of the abutting disc 52 and abuts against the front ball baffle 62.

[0040] With the front ball baffle 62 and the rear ball baffle 63 alternately lifting, the front ball baffle 62 slides out of the launching tube 3, and the rear ball baffle 63 slides into the launching tube 3, so that the first profile control and plugging ball 4 can slide out of the launching tube 3 and abut against the perforation under the action of the water injection pressure difference, and the subsequent profile control and plugging balls 4 sequentially move to the launching tube 3 under the action of the compensation assembly 5, and the profile control and plugging balls 4 are sequentially released, so that the phenomenon that the profile control and plugging balls 4 hinder each other and cannot block the perforation is avoided.

[0041] The circuit and the control involved in the utility model are prior art, and will not be described in detail here.

[0042] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the utility model specification and drawing contents, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A ball injection profile control and water injection integrated pipe column, characterized in that, The application relates to a ball launching device for profile control and plugging, which comprises a mounting disc (1), an open ring tube (2) fixedly mounted on the mounting disc (1) and storing profile control and plugging balls (4), and a launching tube (3) fixedly connected to one end of the open ring tube (2). A compensation assembly (5) for discharging the profile control and plugging balls (4) is arranged in the open ring tube (2). An intermittent blocking device (6) is mounted on the launching tube (3), and the intermittent blocking device (6) comprises a rotating plate (61), a middle plate body of the rotating plate (61) is rotatably mounted in an installation cavity (3a) formed in the bottom of the launching tube (3) through a support (68), front and rear blocking ball plates (62) and (63) are rotatably mounted on the rotating plate (61) on the two sides of the support (68), respectively, the front and rear blocking ball plates (62) and (63) are respectively inserted into two sliding through cavities formed in the bottom of the launching tube (3) and are in sliding connection with the sliding through cavities. The intermittent blocking device (6) further comprises a linkage rod (67) for driving the front and rear blocking ball plates (62) and (63) to alternately ascend and descend.

2. The ball injection profile control and water injection integrated string according to claim 1, characterized in that, A servo motor (64) is fixedly mounted on the support (68), a rotating disc (65) is fixedly mounted on the output end of the servo motor (64), a guide rod (66) is fixedly mounted at a position deviated from the center of the rotating disc (65), one end of the linkage rod (67) is sleeved on the guide rod (66) and is in rotary connection with the guide rod (66), and the other end of the linkage rod (67) is rotatably connected with the rotating plate (61) on one side of the support (68) through a rotating seat.

3. The ball injection profile control and water injection integrated string according to claim 1, characterized in that, The compensation assembly (5) comprises an arc-shaped spring (51), the arc-shaped spring (51) is mounted in the open ring tube (2), one end of the arc-shaped spring (51) is fixedly connected with the closed end of the open ring tube (2), the other end of the arc-shaped spring (51) is fixedly mounted with an abutting disc (52), and the abutting disc (52) is located in the open ring tube (2) and is in sliding connection with the open ring tube (2).

4. The ball injection profile control and water injection integrated string according to claim 3, characterized in that, Two arc-shaped guide pieces (53) are fixedly mounted on the top of the abutting disc (52) and are symmetrically distributed, and the two arc-shaped guide pieces (53) pass through an annular groove (2a) formed on the pipe surface of the open ring tube (2) and are in sliding connection with the outer pipe wall of the open ring tube (2).

5. The ball injection profile control and water injection integrated string as claimed in claim 1, characterized in that, A ball launching hole (2b) for launching the profile control and plugging balls (4) is formed on the open ring tube (2), and the ball launching hole (2b) is close to one end of the open ring tube (2) which is sealed.

6. The ball injection profile control and water injection integrated string as claimed in claim 1, characterized in that, A fixed sleeve (11) is fixedly mounted on the inner cavity wall of the mounting disc (1).

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