Pressure testing device for rotary blowout preventer

Abstract

The utility model belongs to the technical field of inspection and detection, and discloses a pressure test device for a rotary blowout preventer, which comprises a test bed and a pressure test foundation pit, a hydraulic motor is arranged on the test bed, the output end of the hydraulic motor is connected with a driving converter, and the driving converter is connected with a drill rod; a pressure test blind plate is arranged in the pressure test foundation pit and located below the drill rod, and a water injection connector is arranged on the pressure test blind plate. The rotary blowout preventer pressure testing device provided by the utility model can be used for carrying out a rated static pressure test on a shell of a rotary blowout preventer and a rotary dynamic pressure test on a rotary control head, and is simple in overall structure, small in occupied area, low in manufacturing cost, convenient to use and easy to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of inspection and detection, and in particular relates to a rotary blowout preventer pressure testing device. Background Art

[0002] The rotary blowout preventer is a key equipment for underbalanced drilling, geothermal drilling, etc. It acts as a seal between the wellbore annulus and the drill string, provides safe and effective pressure control, and has the function of directing the return fluid from the wellbore away from the wellhead. Since the rotary control head rotates with the drill string, long-term operation will cause wear to the seals inside the rotary control head, so the rotary blowout preventer will be maintained regularly. Routine maintenance, such as cleaning mud on the surface of the equipment, does not require pressure testing again, but when the rotary control head leaks, it needs to be repaired as a whole. At this time, in order to ensure that the equipment is intact or the maintenance is smooth, the rated dynamic and static pressure test of the rotary blowout preventer is required. The existing rotary blowout preventer pressure test device has a complex structure and high manufacturing cost. Utility Model Content

[0003] The utility model aims to solve the above technical problems at least to a certain extent. To this end, the utility model aims to provide a rotary blowout preventer pressure testing device.

[0004] The technical solution adopted by the utility model is:

[0005] A rotary blowout preventer pressure test device comprises a test bench and a pressure test pit. The test bench is provided with a hydraulic motor, the output end of the hydraulic motor is connected to a drive converter, and the drive converter is connected to a drill pipe. A pressure test blind plate is provided in the pressure test pit, the pressure test blind plate is located below the drill pipe, and a water injection interface is provided on the pressure test blind plate.

[0006] Preferably, the test bench includes a main frame composed of horizontal square tubes and vertical square tubes, the bottom of the vertical square tubes is connected to the ground pad, and upper and lower pads are provided on both sides of the top horizontal square tube. The upper pad is provided on the motor seat, and the hydraulic motor is installed on the motor seat.

[0007] Preferably, a first rib plate is provided between the vertical square tube and the horizontal square tube, a second rib plate is provided between the vertical square tube and the anchor plate; and a third rib plate is provided between the horizontal square tubes on the same horizontal plane.

[0008] Preferably, mesh panels are installed on the peripheral sides and top window areas of the main frame, a lifting lug is provided on the top of the main frame, and a ladder is provided on one side of the main frame. The anchor plate is installed on the first anchor bolt through a first nut.

[0009] Preferably, the drive converter includes a bearing and a central shaft mounted on the bearing, and both ends of the central shaft are respectively connected to the hydraulic motor and the drill rod; an upper end cover is provided above the bearing, a lower end cover is provided below the bearing, and a bearing seat is provided outside the bearing.

[0010] Preferably, a coupling is provided between the hydraulic motor and the drive converter, and between the drive converter and the drill pipe.

[0011] Preferably, a second anchor bolt is fixedly provided in the pressure test foundation pit, the base plate is mounted on the second anchor bolt via a locking nut, and the base plate is fixed to the pressure test blind plate via a threaded bolt and a second nut.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides a rotary blowout preventer pressure testing device, which can be used to perform a rated static pressure test on the shell of the rotary blowout preventer and a rotary dynamic pressure test on the rotary control head. It has a simple overall structure, small footprint, low manufacturing cost, and is easy to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a rotary blowout preventer pressure testing device of the utility model.

[0015] Figure 2 The utility model is a schematic diagram of the rotary blowout preventer pressure testing device with the mesh plate omitted.

[0016] Figure 3 It is a schematic diagram of the main frame of the utility model.

[0017] Figure 4 It is a cross-sectional view of a rotary blowout preventer pressure testing device of the utility model.

[0018] Figure 5 It is a schematic diagram of the pressure test plug of the utility model.

[0019] In the figure: 1-upper pad; 2-horizontal square tube; 3-lower pad; 4-lifting ear; 5-vertical square tube; 6-first rib plate; 7-second rib plate; 8-first anchor bolt; 9-first nut; 10-anchor pad; 11-hydraulic motor; 12-motor seat; 13-coupling; 14-center shaft; 15-upper end cover; 16-bearing; 17-bearing seat; 18-lower end cover; 19-drill rod; 20-suspension joint; 21-upper rubber core; 22-rotating control head; 23-housing assembly; 24-pressure test blind plate; 25-threaded bolt; 26-locking nut; 27-second anchor bolt; 28-second nut; 29-water reservoir; 30-third rib plate; 31-pressure test pit; 32-water injection interface; 33-bottom plate; 34-ladder; 35-mesh plate; 36-pressure test plug. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the accompanying drawings herein can be arranged and designed in a variety of different configurations.

[0021] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements.

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 5 As shown, a rotary blowout preventer pressure test device of this embodiment includes a test bench and a pressure test pit 31. The test bench is provided with a hydraulic motor 11. The output end of the hydraulic motor 11 is connected to a drive converter, and the drive converter is connected to a drill pipe 19. The hydraulic motor is driven, which is small in size, impact-resistant, and easy to obtain a large force and torque. A pressure test blind plate 24 is provided in the pressure test pit 31. The pressure test blind plate 24 is located below the drill pipe 19, and a water injection interface 32 is provided on the pressure test blind plate 24.

[0024] The test bench includes a main frame welded by a horizontal square tube 2 and a vertical square tube 5. The bottom of the vertical square tube 5 is connected to the anchor plate 10, and the anchor plate 10 is installed on the first anchor bolt 8 through the first nut 9. An upper pad 1 and a lower pad 3 are provided on both sides of the uppermost horizontal square tube 2. The upper pad 1 is provided on a motor seat 12, and a hydraulic motor 11 is installed on the motor seat 12.

[0025] A first rib plate 6 is provided between the vertical square tube 5 and the horizontal square tube 2, a second rib plate 7 is provided between the vertical square tube 5 and the anchor plate 10, and a third rib plate 30 is provided between the horizontal square tubes 2 on the same horizontal plane. The first rib plate 6, the second rib plate 7 and the third rib plate 30 can play a role in strengthening the strength of the main frame.

[0026] The main frame is provided with mesh panels 35 around the sides and top window areas. The welded mesh panels can prevent the pressure test plug and other components from flying out due to excessive internal pressure of the equipment when the locking system of the equipment fails, thereby reducing safety hazards. A lifting lug 4 is provided on the top of the main frame, and a ladder 34 is provided on one side of the main frame.

[0027] The drive converter includes two bearings 16 and a central shaft 14 mounted on the two bearings 16. The two ends of the central shaft 14 are respectively connected to the hydraulic motor 11 and the drill rod 19. An upper end cover 15 is provided above the bearing 16, a lower end cover 18 is provided below the bearing 16, and a bearing seat 17 is provided outside the bearing 16. A coupling 13 is provided between the hydraulic motor 11 and the drive converter, and between the drive converter and the drill rod 19.

[0028] A second anchor bolt 27 is fixed in the pressure test pit, a bottom plate 33 is mounted on the second anchor bolt 27 through a locking nut 26, and the bottom plate 33 fixes the pressure test blind plate 24 through a threaded bolt 25 and a second nut 28. A water reservoir 29 is provided in the pressure test pit.

[0029] The rotary blowout preventer pressure test device is used in conjunction with a host computer with an operating system and various sensors. The sensors include temperature, pressure and torque sensors. The sensors can transmit the collected data to the host computer to form a curve graph.

[0030] The rotary blowout preventer to be tested mainly includes a shell assembly 23, a rotary assembly, and a pressure test plug 36. A rotary control head 22 is provided in the shell assembly 23, and an upper rubber core 21 and a suspension joint 20 are provided on the rotary control head 22. The shell assembly and the pressure test plug are installed during static pressure testing, and the shell assembly and the rotary assembly are installed during dynamic pressure testing.

[0031] The method of using the rotary blowout preventer pressure test device is:

[0032] During the rated static pressure test, remove the drill pipe and Figure 5 The shell assembly shown is installed in the pressure test pit, water is injected into the shell assembly through the water injection hole to perform a static pressure test according to the process specified in API 16RCD;

[0033] During the rated dynamic pressure test, Figure 4 The rotary blowout preventer shown is installed in the pressure test pit, the drill pipe is installed, the test bench is hoisted as a whole through the lifting lugs, the drill pipe is guided through the two rubber cores, the first nut is installed, and the dynamic pressure test is carried out according to the process specified in API 16RCD.

[0034] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A rotary blowout preventer pressure testing device, characterized in that: The invention comprises a test bench and a pressure test pit (31). The test bench is provided with a hydraulic motor (11). The output end of the hydraulic motor (11) is connected to a drive converter, and the drive converter is connected to a drill rod (19). A pressure test blind plate (24) is provided in the pressure test pit (31). The pressure test blind plate (24) is located below the drill rod (19), and a water injection interface (32) is provided on the pressure test blind plate (24).

2. The rotary blowout preventer pressure testing device according to claim 1, characterized in that: The test bench comprises a main frame composed of a transverse square tube (2) and a vertical square tube (5), the bottom of the vertical square tube (5) is connected to a ground pad (10), an upper pad (1) and a lower pad (3) are provided on both sides of the uppermost transverse square tube (2), the upper pad (1) is provided on a motor seat (12), and a hydraulic motor (11) is installed on the motor seat (12).

3. The rotary blowout preventer pressure testing device according to claim 2, characterized in that: A first rib plate (6) is provided between the vertical square tube (5) and the transverse square tube (2), a second rib plate (7) is provided between the vertical square tube (5) and the anchor plate (10); and a third rib plate (30) is provided between the transverse square tubes (2) on the same horizontal plane.

4. The rotary blowout preventer pressure testing device according to claim 2, characterized in that: The peripheral sides and top window areas of the main frame are provided with mesh panels (35), the top of the main frame is provided with a hanging lug (4), and one side of the main frame is provided with a ladder (34).

5. The rotary blowout preventer pressure testing device according to claim 2, characterized in that: The anchor plate (10) is mounted on the first anchor bolt (8) via a first nut (9).

6. The rotary blowout preventer pressure testing device according to claim 1, characterized in that: The drive converter comprises a bearing (16) and a central shaft (14) mounted on the bearing (16), wherein two ends of the central shaft (14) are respectively connected to a hydraulic motor (11) and a drill rod (19); an upper end cover (15) is provided above the bearing (16), a lower end cover (18) is provided below the bearing (16), and a bearing seat (17) is provided outside the bearing (16).

7. The rotary blowout preventer pressure testing device according to claim 1, characterized in that: A coupling (13) is provided between the hydraulic motor (11) and the drive converter, and between the drive converter and the drill rod (19).

8. The rotary blowout preventer pressure testing device according to claim 1, characterized in that: A second anchor bolt (27) is fixedly arranged in the pressure test foundation pit, a bottom plate (33) is mounted on the second anchor bolt (27) via a locking nut (26), and the bottom plate (33) fixes the pressure test blind plate (24) via a threaded bolt (25) and a second nut (28).

9. The rotary blowout preventer pressure testing device according to claim 1, characterized in that: A water reservoir (29) is provided in the pressure test foundation pit.

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