Annulus flow velocity wellhead measuring device

Abstract

The utility model discloses an annulus flow velocity wellhead measuring device, which relates to the technical field of petroleum engineering, and comprises a mounting plate, two symmetrically arranged rotating rods are rotatably arranged on the side part of the mounting plate in a penetrating manner, fixed plates are fixedly arranged at the ends, close to each other, of the two rotating rods, a velocity measuring rolling ball is arranged between the two fixed plates, and a support plate is fixedly arranged on the outer wall of each fixed plate. A Hall type rotating speed sensor is fixedly arranged on the surface of the supporting plate and communicates with a power transmission cable, mounting frames are fixedly arranged at the two ends of the mounting plate correspondingly, and clamping mounting mechanisms are arranged on the backs of the two mounting frames correspondingly. According to the mounting plate, the rotating rod, the speed measuring rolling ball, the supporting plate and the Hall type rotating speed sensor provided by the utility model, the rotating speed when the speed measuring rolling ball is pushed by oil at a wellhead is converted to measure the annulus flow velocity, the sensor does not need to be in direct contact with the oil, the service life of the speed measuring device is prolonged, and the speed measuring precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil engineering, and particularly relates to an annular flow velocity wellhead measuring device. Background Art

[0002] The annular flow velocity refers to the flow rate of the fluid flowing in the annular space formed between the drill pipe and the well wall, which is a key parameter in oil engineering. The annular flow velocity affects various factors in the drilling process, such as the cooling and cleaning effects of the drilling fluid. Therefore, it is necessary to accurately measure the annular flow velocity. Currently, the measurement method is to place the measuring device into the well. When the device contacts the oil fluid in the well, the impurities in the oil fluid are likely to affect the measurement accuracy of the internal sensor of the measuring device. At the same time, the device is easily pushed by the oil fluid and collides with the well wall, which will cause damage to the measuring device and also reduce the flow velocity measurement accuracy.

[0003] Therefore, we propose an annular flow velocity wellhead measuring device to solve the above problems. Content of the Utility Model

[0004] In view of the problems existing in the existing annular flow velocity wellhead measuring device, the present utility model is proposed.

[0005] Therefore, the purpose of the present utility model is to provide an annular flow velocity wellhead measuring device, which solves the problem that in the prior art, the device is easily contaminated and damaged by directly extending the measuring device into the well, resulting in a reduction in the flow velocity measurement accuracy.

[0006] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0007] An annular flow velocity wellhead measuring device includes a mounting plate. Two symmetrically arranged rotating rods are rotatably penetrated through the side part of the mounting plate. Fixing plates are fixedly arranged at the close ends of the two rotating rods. A speed measuring rolling ball is arranged between the two fixing plates. A supporting plate is fixedly arranged on the outer wall of the fixing plate. A Hall type rotational speed sensor is fixedly arranged on the surface of the supporting plate. The Hall type rotational speed sensor is connected with a transmission cable.

[0008] Mounting frames are fixedly arranged at both ends of the mounting plate. Clamping and mounting mechanisms are arranged on the backs of the two mounting frames.

[0009] Preferably, mounting bolts are threadedly penetrated through the interiors of the two fixing plates, and the threaded ends of the mounting bolts are threadedly arranged inside the speed measuring rolling ball.

[0010] Preferably, the clamping and mounting mechanism includes a driving screw rod. The driving screw rod is threadedly arranged on the top of the mounting frame. The mounting frame is an L-shaped support frame. A pressing block is rotatably sleeved at the end of the driving screw rod. The pressing block is in contact and cooperation with the inner wall of the mounting frame.

[0011] Preferably, rotation blocks for rotating the driving screws are fixedly provided at the remote ends of the two driving screws.

[0012] Further, rotation holes are provided at both ends inside the mounting plate, rotation bearings are fixedly provided on the inner walls of the rotation holes, and the rod wall of the rotating rod is rotatably arranged in the rotation bearings.

[0013] Preferably, the mounting plate is semicircularly arranged.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0015] 1. In the present utility model, through the provided mounting plate, rotating rod, speed measuring rolling ball, support plate, and Hall type rotational speed sensor, the annular flow velocity is measured by converting the rotational speed when the speed measuring rolling ball is pushed by the oil fluid at the wellhead, without directly contacting the sensor with the oil fluid, improving the service life and speed measuring accuracy of the speed measuring device;

[0016] 2. In the present utility model, through the provided mounting plate, mounting frame, and clamping and mounting mechanism, the mounting plate can be mounted at the wellhead to ensure stable speed measurement. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of the present utility model.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the mounting plate of the present utility model;

[0020] Figure 3 It is a side structural schematic diagram of the mounting frame, driving screw, and pressing block of the present utility model.

[0021] Description of the reference numerals: 1. Mounting plate; 2. Rotating rod; 3. Fixed plate; 4. Speed measuring rolling ball; 5. Support plate; 6. Hall type rotational speed sensor; 7. Power cable; 8. Mounting frame; 9. Mounting bolt; 10. Driving screw; 11. Pressing block; 12. Rotation block; 13. Rotation bearing. Detailed Embodiment

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0023] An embodiment of the utility model discloses an annular flow velocity wellhead measuring device.

[0024] The utility model provides a Figures 1-3 shown annular flow velocity wellhead measuring device, which includes a mounting plate 1. The mounting plate 1 is semicircularly arranged. Two symmetrically arranged rotating rods 2 are rotatably penetrated through the side part of the mounting plate 1. Fixed plates 3 are fixedly arranged at the close ends of the two rotating rods 2. A speed measuring rolling ball 4 is arranged between the two fixed plates 3. Rotating holes are opened at both ends inside the mounting plate 1. Rotating bearings 13 are fixedly arranged on the inner walls of the rotating holes. The rod walls of the rotating rods 2 are rotatably arranged in the rotating bearings 13. Mounting bolts 9 are threadedly penetrated through the interiors of the two fixed plates 3. The threaded ends of the mounting bolts 9 are threadedly arranged inside the speed measuring rolling ball 4. Support plates 5 are fixedly arranged on the outer walls of the fixed plates 3. Hall type rotational speed sensors 6 are fixedly arranged on the surfaces of the support plates 5. The Hall type rotational speed sensors 6 are connected with power cables 7.

[0025] Before measuring the annular flow velocity, the mounting plate 1 is arranged at the wellhead, and the position of the mounting plate 1 is determined. At this time, the oil can push the speed measuring rolling ball 4 when flowing out. Since the oil has a certain flow velocity, when the oil continuously contacts the speed measuring rolling ball 4, the speed measuring rolling ball 4 drives the rotating rod 2 to rotate rapidly under the support of the rotating bearing 13. At this time, since the rotating rod 2 contacts the Hall type rotational speed sensor 6, the rotational speed of the rotating rod 2 can be rapidly measured, and the oil flow velocity, that is, the annular flow velocity, can be obtained through conversion during the measurement process, so as to complete the measurement of the flow velocity. And the above measurement method does not need to extend the measuring device into the well, which improves the service life of the speed measuring device.

[0026] In order to stably arrange the mounting plate 1 at the wellhead to ensure the stability during the speed measurement process, as Figures 1-3 shown, mounting frames 8 are fixedly arranged at both ends of the mounting plate 1. Clamping and mounting mechanisms are arranged on the backs of the two mounting frames 8. The clamping and mounting mechanism includes a driving screw rod 10. The driving screw rod 10 is threadedly arranged on the top of the mounting frame 8. The mounting frame 8 is an L-shaped support frame. A pressing block 11 is rotatably sleeved at the end of the driving screw rod 10. The pressing block 11 is in contact and cooperation with the inner wall of the mounting frame 8. Rotating blocks 12 for rotating the driving screw rod 10 are fixedly arranged at the far ends of the two driving screw rods 10.

[0027] Before measuring the speed, the mounting plate 1 can be placed into the wellhead, and the pressing block 11 is located outside the wellhead. At this time, the speed measuring rolling ball 4 can be fully contacted with the oil. Then, the two rotating blocks 12 are rotated simultaneously, so that the two driving screw rods 10 rotate. Since the pressing block 11 is always in contact with the inner wall of the mounting frame 8, when the driving screw rod 10 rotates, the pressing block 11 can rotate along the inner wall of the support frame 8 and contact the outside of the wellhead, and the stable installation of the mounting plate 1 is completed, ensuring the stability during the speed measurement process.

[0028] Only some exemplary embodiments of the present utility model have been described by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. An annulus flow velocity wellhead measuring device, comprising a mounting plate (1), characterized in that: Two symmetrically arranged rotating rods (2) are rotatably penetrated on the side of the mounting plate (1); a fixing plate (3) is fixedly provided at one end of the two rotating rods (2) that is close to each other; a speed measuring rolling ball (4) is provided between the two fixing plates (3); a supporting plate (5) is fixedly provided on the outer wall of the fixing plate (3); a Hall-type speed sensor (6) is fixedly provided on the surface of the supporting plate (5); and a power transmission cable (7) is connected to the Hall-type speed sensor (6); Mounting frames (8) are fixedly provided at both ends of the mounting plate (1), and clamping mounting mechanisms are provided at the backs of the two mounting frames (8).

2. The annular flow velocity wellhead measuring device according to claim 1, characterized in that: The interiors of the two fixing plates (3) are both threaded with mounting bolts (9), and the threaded ends of the mounting bolts (9) are threadedly disposed in the interior of the speed measuring rolling ball (4).

3. The annular flow velocity wellhead measuring device according to claim 1, characterized in that: The clamping installation mechanism comprises a driving screw (10), wherein the driving screw (10) is threadedly arranged on the top of the mounting frame (8), and the mounting frame (8) is an L-shaped support frame. A pressing block (11) is rotatably sleeved on the end of the driving screw (10), and the pressing block (11) is in contact with the inner wall of the mounting frame (8).

4. The annular flow velocity wellhead measuring device according to claim 3, characterized in that: A rotating block (12) for rotating the driving screw rods (10) is fixedly provided at one end away from the other end of the two driving screw rods (10).

5. The annular flow velocity wellhead measuring device according to claim 1, characterized in that: Rotation holes are provided at both ends of the interior of the mounting plate (1), a rotation bearing (13) is fixedly provided on the inner wall of the rotation hole, and the rod wall of the rotating rod (2) is rotatably arranged in the rotation bearing (13).

6. The annular flow velocity wellhead measuring device according to claim 1, characterized in that: The mounting plate (1) is arranged in a semicircular shape.

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