Plug-in rotary testing device for rotary blowout preventer

Abstract

The utility model discloses a plug-in type rotation testing device for a rotary blowout preventer. The plug-in type rotation testing device comprises an active rotation mechanism, a passive rotation mechanism and a shell, the driving rotating mechanism comprises a motor driving device, a shaft connection converter and a rotating mandrel which are sequentially connected from top to bottom; the passive rotating mechanism comprises a bearing sleeve seat, a rotating assembly, a first rubber core, a second rubber core and a bearing; the first rubber core and the second rubber core are respectively mounted at the upper part and the lower end of an inner cavity of the rotating assembly; the bearing sleeve seat is mounted on the rotating assembly; the upper end of the rotary core shaft is mounted in a bearing of the bearing sleeve seat; an assembly shell is arranged in the shell, 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 motor is used for driving the rotation 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 an inserted rotary test device for a rotary blowout preventer, belonging to the field of wellhead equipment for oil drilling. Background Art

[0002] In drilling and completion operations with a narrow bottom hole pressure window, a rotary blowout preventer needs to be installed for pressure controlled drilling. The rotating assembly, an important component of this rotary blowout preventer, is driven to rotate by the drill pipe when in operation. The operation time is long, and there is no drill pipe in indoor testing, so it is necessary to achieve the best possible on-site operation effect on the well.

[0003] In view of the above problems, a rotary blowout preventer plug-in rotary test device is provided, which adopts a motor-connected rotary drive mode to drive the rotary assembly to rotate. This structure is not only simple in structure but also easy to install. The motor-driven rotation drives the rotary assembly to rotate, which effectively simulates the rotary blowout preventer rubber core sealing oil drill string, thereby realizing indoor simulation tests of working conditions such as pressure-controlled rotary drilling and pressure-assisted drilling. Utility Model Content

[0004] The utility model aims to provide an insertion type rotary test device for a rotary blowout preventer in view of the problems existing in the prior art.

[0005] The utility model provides a technical solution to solve the above technical problems: a rotary blowout preventer insertion type rotary test device, comprising an active rotary mechanism, a passive rotary mechanism, and a shell;

[0006] The active rotating mechanism includes a motor drive device, a shaft connection converter, and a rotating mandrel connected in sequence from top to bottom;

[0007] The passive rotating mechanism comprises a bearing sleeve, a rotating assembly, a first rubber core, a second rubber core and a bearing installed in the bearing sleeve; the first rubber core and the second rubber core are respectively installed at the upper part and the lower end of the inner cavity of the rotating assembly; the bearing sleeve is installed on the rotating assembly; the upper end of the rotating mandrel is installed in the bearing of the bearing sleeve, and the lower end is located in the rotating assembly and passes through the first rubber core and the second rubber core in sequence;

[0008] An assembly housing is arranged inside the housing, an assembly bearing is arranged inside the assembly housing, the lower end of the rotating assembly is installed in the assembly bearing, and the second rubber core is located below the assembly housing.

[0009] A further technical solution is that an assembly support protection cover is provided at the upper end of the shell, and a motor support protection cover is provided at the upper end of the assembly support protection cover.

[0010] A further technical solution is that the shell and the assembly support protection cover, and the assembly support protection cover and the motor support protection cover are connected by bolts.

[0011] A further technical solution is that a bearing cover is provided at the upper end of the bearing sleeve.

[0012] A further technical solution is that the bearing cover is installed on the bearing sleeve by means of a hexagon socket locking bolt I and presses the bearing to achieve a positioning effect of the bearing.

[0013] A further technical solution is that a hexagonal shaft is provided between the rotating core shaft and the shaft connection converter, the upper end of the rotating core shaft has a hexagonal hole, the upper end of the hexagonal shaft is installed in the shaft connection converter through a flat key clearance fit, and the lower end is installed in the hexagonal hole of the rotating core shaft through a clearance fit.

[0014] A further technical solution is that the bearing sleeve is installed on the upper end of the rotating assembly through a hexagon socket locking bolt II.

[0015] A further technical solution is that both the first rubber core and the second rubber core are rubber cores.

[0016] The utility model has the following beneficial effects: the utility model has a simple structure and is easy to install. It uses a motor to drive the rotating assembly to rotate, effectively simulating the sealing of the oil drill string by the rubber core of the rotary blowout preventer, thereby realizing indoor simulation tests of working conditions such as pressure-controlled rotary drilling and pressure-assisted drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] As shown in the figure: 11-rotating mandrel, 111-hexagonal hole, 12-axis connection converter, 121-hexagonal shaft, 21-bearing sleeve, 211-hexagonal locking bolt II, 22-hexagonal locking bolt I, 23-bearing cover, 31-rotating assembly, 32-first rubber core, 33-second rubber core, 41-motor drive device, 42-motor support protection cover, 43-assembly support protection cover, 44-housing. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on 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.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1 As shown, the utility model provides a rotary blowout preventer insertion type rotary test device, including an active rotary mechanism, a passive rotary mechanism, and a housing 44;

[0024] The active rotating mechanism includes a motor drive device 41, a shaft connection converter 12, and a rotating mandrel 11 connected in sequence from top to bottom;

[0025] The passive rotating mechanism comprises a bearing sleeve 21, a rotating assembly 31, a first rubber core 32, a second rubber core 33 and a bearing installed in the bearing sleeve 21; the first rubber core 32 and the second rubber core 33 are respectively installed at the upper part and the lower end of the inner cavity of the rotating assembly 31; the bearing sleeve 21 is installed on the rotating assembly 31; the upper end of the rotating mandrel 11 is installed in the bearing of the bearing sleeve 21, and the lower end is located in the rotating assembly 31 and passes through the first rubber core 32 and the second rubber core 33 in sequence;

[0026] An assembly housing 34 is disposed in the housing 44 . An assembly bearing is disposed in the assembly housing 34 . The lower end of the rotating assembly 31 is mounted in the assembly bearing. The second rubber core 33 is located below the assembly housing 34 .

[0027] When the utility model is in use, the shell 44 is fixedly connected to the ground, and the motor is used to drive the rotating core shaft 11 to rotate. At the same time, since the first rubber core 32 and the second rubber core 33 are both sleeved on the middle and lower parts of the rotating core shaft 11, the rotating assembly 31 is driven to rotate, which effectively simulates the sealing of the oil drill string by the rotary blowout preventer rubber core, thereby realizing indoor simulation tests of working conditions such as pressure-controlled rotary drilling and pressure-assisted drilling.

[0028] like Figure 1 As shown, in this embodiment, the upper end of the shell 44 is provided with an assembly support protective cover 43 that covers the rotating assembly 31 and the bearing sleeve 21, and the upper end of the assembly support protective cover 43 is provided with a motor support protective cover 42 that covers the shaft connection converter 12 and part of the motor drive device 41.

[0029] The housing 44 and the assembly support protection cover 43 , and the assembly support protection cover 43 and the motor support protection cover 42 are connected by bolts.

[0030] like Figure 1 As shown, in this embodiment, a bearing cover 23 is provided at the upper end of the bearing sleeve 21. The bearing cover 23 is installed on the bearing sleeve 21 through a hexagon socket locking bolt Ⅰ22 and presses the bearing to achieve the positioning effect of the bearing.

[0031] like Figure 1 As shown, in this embodiment, a specific connection method between the rotating core shaft 11 and the shaft connection converter 12 is that a hexagonal shaft 121 is provided between the rotating core shaft 11 and the shaft connection converter 12, and the upper end of the rotating core shaft 11 has a hexagonal hole, and the upper end of the hexagonal shaft 121 is installed in the shaft connection converter 12 through a flat key clearance fit, and the lower end is installed in the hexagonal hole of the rotating core shaft 11 through a clearance fit.

[0032] like Figure 1 As shown, in this embodiment, in order to facilitate the disassembly of the bearing sleeve 21, a preferred implementation is that the bearing sleeve 21 is installed on the upper end of the rotating assembly 31 by means of a hexagon socket locking bolt II 211.

[0033] In this embodiment, both the first rubber core 32 and the second rubber core 33 are rubber cores.

[0034] The above description does not impose any form of limitation on the present invention. Although the present invention has been disclosed through the above embodiments, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A rotary blowout preventer insertion type rotary test device, characterized in that: It comprises an active rotating mechanism, a passive rotating mechanism, and a housing (44); The active rotating mechanism comprises a motor driving device (41), a shaft connection converter (12), and a rotating mandrel (11) which are connected in sequence from top to bottom; The passive rotating mechanism comprises a bearing sleeve (21), a rotating assembly (31), a first rubber core (32), a second rubber core (33) and a bearing installed in the bearing sleeve (21); the first rubber core (32) and the second rubber core (33) are respectively installed in the upper part and the lower end of the inner cavity of the rotating assembly (31); the bearing sleeve (21) is installed on the rotating assembly (31); the upper end of the rotating mandrel (11) is installed in the bearing of the bearing sleeve (21), and the lower end is located in the rotating assembly (31) and passes through the first rubber core (32) and the second rubber core (33) in sequence; An assembly housing (34) is arranged inside the housing (44), an assembly bearing is arranged inside the assembly housing (34), the lower end of the rotating assembly (31) is mounted inside the assembly bearing, and the second rubber core (33) is located below the assembly housing (34).

2. The rotary blowout preventer insertion type rotary test device according to claim 1, characterized in that: An assembly support protection cover (43) is provided at the upper end of the shell (44), and a motor support protection cover (42) is provided at the upper end of the assembly support protection cover (43).

3. The rotary blowout preventer insertion type rotary test device according to claim 2, characterized in that: The housing (44) and the assembly support protection cover (43), and the assembly support protection cover (43) and the motor support protection cover (42) are all connected via bolts.

4. The rotary blowout preventer insertion type rotary test device according to claim 1, characterized in that: A bearing pressure cover (23) is provided at the upper end of the bearing sleeve (21).

5. The rotary blowout preventer insertion type rotary test device according to claim 4, characterized in that: The bearing pressure cover (23) is installed on the bearing sleeve (21) through the hexagon socket locking bolt I (22) and presses the bearing to achieve the positioning effect of the bearing.

6. The rotary blowout preventer insertion type rotary testing device according to claim 1, characterized in that: A hexagonal shaft (121) is provided between the rotating core shaft (11) and the shaft connection converter (12); the upper end of the rotating core shaft (11) has a hexagonal hole; the upper end of the hexagonal shaft (121) is installed in the shaft connection converter (12) through a flat key clearance fit, and the lower end is installed in the hexagonal hole of the rotating core shaft (11) through a clearance fit.

7. The rotary blowout preventer insertion type rotary testing device according to claim 1, characterized in that: The bearing sleeve (21) is mounted on the upper end of the rotating assembly (31) via a hexagon socket locking bolt II (211).

8. The rotary blowout preventer insertion type rotary testing device according to claim 1, characterized in that: The first rubber core (32) and the second rubber core (33) are both rubber cores.

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