Direct connection type rotation testing device for rotary blowout preventer

Abstract

The utility model relates to a direct connection type rotary testing device for a rotary blowout preventer, and belongs to the field of petroleum drilling wellhead equipment. In order to solve the technical problems, the technical scheme provided by the utility model is that the direct-connection type rotation testing device for the rotary blowout preventer comprises a rotating mechanism and a fixing mechanism, the rotating mechanism comprises a hydraulic motor driving device, a coupler, a connecting shaft, a flat key, a connecting base and a rotating assembly which are sequentially connected from top to bottom. The fixing mechanism comprises a supporting table and an assembly shell, the hydraulic motor driving device is installed on the supporting table, and the lower end of the hydraulic motor driving device penetrates through the supporting table; an assembly bearing is arranged in the assembly shell, and the lower end of the rotating assembly is installed in the assembly bearing. The device is simple in structure and convenient to install, the hydraulic motor is used for driving the rotary assembly to rotate, a rotary blowout preventer rubber core sealing petroleum drill column is effectively simulated, and therefore indoor simulation tests of working conditions such as pressure-controlled rotary drilling and under-pressure tripping are achieved.

Description

Technical Field

[0001] The utility model relates to a direct-connected rotary test device for a rotary blowout preventer, belonging to the field of oil drilling wellhead equipment. Background Technique

[0002] In drilling and well completion operations with a narrow bottom hole pressure window, it is necessary to install a rotary blowout preventer for pressure control drilling. The rotary assembly, which is an important component of this rotary blowout preventer, rotates driven by the drill pipe during operation. Since the indoor test has no drill pipe, it is necessary to achieve the on-site operation effect as much as possible.

[0003] In view of the above problems, a direct-connected rotary test device for a rotary blowout preventer is provided. It adopts a connection hydraulic motor rotation drive mode to drive the rotary assembly to rotate. This structure is not only simple in structure and convenient to install, but also uses a hydraulic motor to drive the rotation to drive the rotary assembly to rotate, effectively simulating the rubber core of the rotary blowout preventer to seal the oil drill string, so as to realize the indoor simulation test of working conditions such as pressure control rotary drilling and tripping under pressure. Content of the Utility Model

[0004] The purpose of the utility model is to provide a direct-connected rotary test device for a rotary blowout preventer aiming at the problems existing in the prior art.

[0005] The technical solution provided by the utility model to solve the above technical problems is: a direct-connected rotary test device for a rotary blowout preventer, including: a rotary mechanism and a fixing mechanism;

[0006] The rotary mechanism includes a hydraulic motor drive device, a coupling, a connecting shaft, a flat key, a connecting base, and a rotary assembly, which are connected in sequence from top to bottom;

[0007] The fixing mechanism includes a support table and a total assembly housing. The hydraulic motor drive device is installed on the support table, and its lower end passes through the support table;

[0008] A total assembly bearing is arranged in the total assembly housing, and the lower end of the rotary assembly is installed in the total assembly bearing.

[0009] A further technical solution is that both ends of the connecting shaft are installed in the coupling and the connecting base through clearance fit with flat keys.

[0010] A further technical solution is that the connecting base is installed on the rotary assembly through an internal hexagon socket head cap screw.

[0011] A further technical solution is that the lower end of the hydraulic motor drive device is installed in the upper end of the coupling through clearance fit with a short flat key.

[0012] A further technical solution is that the number of the total assembly bearings is two, which are arranged up and down in the total assembly housing.

[0013] A further technical solution is that the hydraulic motor driving device is externally connected to a hydraulic control station connected to a hydraulic oil pipe to control and monitor the rotation of the rotating assembly.

[0014] A further technical solution is that both the assembly housing and the support platform are externally connected to a fixing device.

[0015] The utility model has the following beneficial effects: The utility model has a simple structure and is easy to install. The hydraulic motor is used to drive the rotation to drive the rotating assembly to rotate, effectively simulating the rubber core of the rotating blowout preventer to seal the oil drill string, so as to realize the indoor simulation test of working conditions such as pressure-controlled rotary drilling and tripping under pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the utility model.

[0017] As shown in the figure: 11 - hydraulic motor driving device, 12 - coupling, 13 - connecting shaft, 14 - flat key, 15 - connecting base, 21 - rotating assembly, 22 - assembly housing, 31 - support platform, 151 - hexagon socket head cap screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope of protection of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] As Figure 1 shown, a direct-connected rotary test device for a rotary blowout preventer provided by the present utility model includes a rotary mechanism and a fixing mechanism;

[0023] The rotary mechanism includes a hydraulic motor driving device 11, a coupling 12, a connecting shaft 13, a connecting base 15, and a rotary assembly 21, which are connected in sequence from top to bottom;

[0024] The fixing mechanism includes a support platform 31 and a housing 22 of the assembly. The hydraulic motor driving device 11 is installed on the support platform 31, and its lower end passes through the support platform 31;

[0025] Two assembly bearings are arranged up and down in the housing 22 of the assembly, and the lower end of the rotary assembly 21 is installed in the assembly bearings.

[0026] When the present utility model is in use, the hydraulic motor is used to drive the rotation to drive the rotary assembly 21 to rotate, effectively simulating the rubber core of the rotary blowout preventer to seal the oil drilling string, so as to realize the indoor simulation test of working conditions such as controlled pressure rotary drilling and tripping under pressure.

[0027] Both the support platform 31 and the housing 22 of the assembly are externally connected to a fixing device to fix the support platform 31 and the housing 22 of the assembly.

[0028] As Figure 1 shown, in this embodiment, a specific connection method between the connecting base 15, the coupling 12, and the connecting shaft 13 is that both ends of the connecting shaft 13 are installed in the coupling 12 and the connecting base 15 through clearance fit with flat keys 14.

[0029] As Figure 1 shown, in this embodiment, a specific connection method between the hydraulic motor driving device 11 and the coupling 12 is that the lower end of the hydraulic motor driving device 11 is installed in the upper end of the coupling 12 through clearance fit with two short flat keys.

[0030] As Figure 1 shown, in this embodiment, a specific connection method between the rotary assembly 21 and the coupling 12 is that the connecting base 15 is installed on the rotary assembly 21 through an internal hexagonal locking bolt 151.

[0031] In this embodiment, the hydraulic motor driving device 11 is externally connected to a hydraulic control station connected to a hydraulic oil pipe to control and monitor the rotation of the rotary assembly.

[0032] As described above, it is not intended to impose any form of limitation on the present utility model. Although the present utility model has been disclosed through the above embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes by using the disclosed technical content within the scope of the technical solution of the present utility model. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A direct-connected rotary test device for a rotary blowout preventer, characterized in that: Including rotating mechanism and fixing mechanism; The rotating mechanism comprises a hydraulic motor drive device (11), a coupling (12), a connecting shaft (13), a flat key (14), a connecting base (15), and a rotating assembly (21) which are connected in sequence from top to bottom; The fixing mechanism comprises a support platform (31) and an assembly housing (22); the hydraulic motor drive device (11) is mounted on the support platform (31), and its lower end passes through the support platform (31); An assembly bearing is arranged in the assembly housing (22), and the lower end of the rotating assembly (21) is installed in the assembly bearing.

2. A rotary blowout preventer direct-connected rotary test device according to claim 1, characterized in that: The two ends of the connecting shaft (13) are installed in the coupling (12) and the connecting base (15) through a clearance fit of a flat key (14).

3. A rotary blowout preventer direct-connected rotary test device according to claim 1, characterized in that: The connection base (15) is mounted on the rotating assembly (21) via a hexagon socket locking bolt (151).

4. A rotary blowout preventer direct-connected rotary test device according to claim 1, characterized in that: The lower end of the hydraulic motor drive device (11) is installed in the upper end of the coupling (12) through a short flat key clearance fit.

5. A rotary blowout preventer direct-connected rotary test device according to claim 4, characterized in that: There are two assembly bearings, which are arranged one above the other in the assembly housing (22).

6. A rotary blowout preventer direct-connected rotary test device according to claim 1, characterized in that: The hydraulic motor drive device (11) is externally connected to a hydraulic control station connected to a hydraulic oil pipe to control and monitor the rotation of the rotating assembly.

7. A rotary blowout preventer direct-connected rotary test device according to claim 1, characterized in that: The assembly housing (22) and the support platform (31) are both externally connected to a fixing device.

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