Rotary blowout preventer device and rotary blowout preventer shell assembly thereof

Abstract

The invention discloses a rotary blowout preventer device and a rotary blowout preventer shell assembly thereof, and relates to the technical field of rotary blowout preventers, and the rotary blowout preventer shell assembly comprises a base shell internally provided with a cavity for assembling a rotary control head; the cooling liquid circulating chamber is arranged between the inner side of the base shell and the outer side of the rotary control head; the liquid injection surface is arranged on one side of the base shell, and a cooling liquid return hole, a first oil injection hole, a cooling liquid injection hole and a second oil injection hole are sequentially formed in the liquid injection surface; wherein an oil injection groove and a cooling liquid injection groove are formed in the cavity, and lubricating oil enters the oil injection groove through the first oil injection hole or the second oil injection hole and then flows through a reserved hole of the rotary control head to enter a bearing cavity of the rotary control head; cooling liquid enters the cooling liquid injection groove through the cooling liquid injection hole, then flows through the preformed hole of the rotary control head, enters the cooling liquid circulation cavity and finally enters the cooling liquid return hole. The device is favorable for cooling and lubricating the rotary control head.

Description

Technical Field

[0001] The present invention relates to the technical field of rotating blowout preventers, and more specifically, to a rotating blowout preventer housing assembly. In addition, the present invention also relates to a rotating blowout preventer device including the above-mentioned rotating blowout preventer housing assembly. Background Art

[0002] In the related art, a rotating blowout preventer is a key device for controlled pressure drilling. As an important part of the rotating blowout preventer, after the rotating control head and the housing assembly are assembled, the housing assembly mainly plays a role in bearing the rotating control head. In addition, the outer wall of the housing assembly can seal the wellhead. However, for the cooling and lubrication of the rotating control head during use, other components need to be specifically provided, which makes the device structure more cumbersome and complex.

[0003] In summary, how to provide a housing assembly that helps to cool and lubricate the rotating control head is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a rotating blowout preventer housing assembly, which helps to perform cooling and lubrication operations on the rotating control head.

[0005] Another object of the present invention is to provide a rotating blowout preventer device including the above-mentioned rotating blowout preventer housing assembly.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A rotating blowout preventer housing assembly includes:

[0008] A base housing, which is provided with a cavity for assembling a rotating control head therein;

[0009] A coolant circulation chamber, which is arranged between the inner side of the base housing and the outer side of the rotating control head;

[0010] A liquid injection surface, which is arranged on one side of the base housing, and a coolant return hole, a first oil injection hole, a coolant injection hole, and a second oil injection hole are sequentially arranged on the liquid injection surface;

[0011] Wherein, an oil injection groove and a coolant injection groove are arranged in the cavity. Lubricating oil enters the oil injection groove through the first oil injection hole or the second oil injection hole, and then flows through a reserved hole of the rotating control head into the bearing chamber of the rotating control head; coolant enters the coolant injection groove through the coolant injection hole, and then flows through the reserved hole of the rotating control head into the coolant circulation chamber, and finally enters the coolant return hole.

[0012] In one embodiment, two diversion outlets and a grouting inlet are provided on the outer peripheral side of the base shell, the grouting inlet is located between the two diversion outlets, and the diversion outlet and the grouting inlet are both blocked by blind plates.

[0013] In one embodiment, each of the blind plates is fixed to the outer peripheral side of the base shell by threaded bolts.

[0014] In one embodiment, at least two drainage holes are provided at intervals on the grouting inlet.

[0015] In one embodiment, liquid cylinders are distributed on two opposite sides of the base shell, and an oil separation and collection block is provided on the other side of the base shell;

[0016] Two groups of oil circuits are arranged inside the oil separation and collection block, and three groups of quick connectors are arranged outside the oil separation and collection block. The quick connectors are used to connect the hydraulic cylinder and the hydraulic control system respectively.

[0017] In one embodiment, a first O-ring groove and a second O-ring groove are provided on the top outer wall of the base shell.

[0018] In one embodiment, a third O-ring groove is provided above the coolant injection groove, a fourth O-ring groove is provided between below the coolant injection groove and above the oil injection groove, and a fifth O-ring groove is provided below the oil injection groove.

[0019] In one embodiment, a mounting hole for assembling with other components is provided on the top of the base housing.

[0020] In one embodiment, the liquid filling surface is provided with a nameplate positioning hole.

[0021] A rotary blowout preventer device comprises the rotary blowout preventer housing assembly described in any one of the above items.

[0022] When using the rotary blowout preventer housing assembly provided by the present invention, the rotary control head can be placed in the cavity of the base housing. When the rotary control head needs to be lubricated, the operator can connect the oil pipe with the first oil filling hole or the second oil filling hole to pump lubricating oil into the first oil filling hole or the second oil filling hole. The lubricating oil then enters the oil filling groove and then flows through the reserved hole of the rotary control head into the bearing chamber of the rotary control head to lubricate the bearings of the rotary control head to ensure the use effect of the rotary control head.

[0023] When the rotary control head needs to be cooled, the operator can connect the coolant pipe to the coolant injection hole to pump the coolant into the coolant injection hole. The coolant then enters the coolant injection tank, flows through the reserved hole of the rotary control head and enters the coolant circulation chamber. Finally, the coolant enters the return coolant hole and returns to the circulating coolant tank.

[0024] Since the base housing is internally provided with a lubricating oil passage and a coolant passage, it is convenient to inject lubricating oil and coolant into the rotary control head. When installing or disassembling the rotary control head, there is no need for the operator to go to the wellhead to disassemble and assemble the oil and coolant pipelines. Moreover, a coolant circulation chamber is provided between the inner side of the base housing and the outer side of the rotary control head, which can effectively increase the cooling heat transfer area between the base housing and the bearing assembly of the rotary control head and improve the cooling effect on the entire rotating blowout preventer.

[0025] In summary, the rotating blowout preventer housing assembly provided by the present invention helps to cool and lubricate the rotary control head.

[0026] In addition, the present invention also provides a rotating blowout preventer device including the above-mentioned rotating blowout preventer housing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0028] Figure 1 is the front view of the rotating blowout preventer housing assembly provided by the present invention;

[0029] Figure 2 is the left sectional view of the rotating blowout preventer housing assembly;

[0030] Figure 3 is the rear view of the rotating blowout preventer housing assembly;

[0031] Figure 4 is the overall assembly drawing of the rotating blowout preventer housing assembly;

[0032] Figure 5 is the top view of the rotating blowout preventer housing assembly;

[0033] Figure 6 is Figure 5 the sectional view taken along line A-A of

[0034] Figure 7 is Figure 5 the sectional view taken along line B-B of

[0035] Figure 8 is Figure 5 the sectional view taken along line C-C of

[0036] Figure 9 is Figure 5 the sectional view taken along line D-D of

[0037] Figure 10 is the E-E sectional view of Figure 5 ;

[0038] Figure 11 is the F-F sectional view and G-G sectional view of Figure 5 ;

[0039] Figure 12 is the structural schematic diagram of the rotating blowout preventer housing assembly from another perspective;

[0040] Figure 13 is the assembled axonometric view of the rotating blowout preventer housing assembly and the clamp assembly.

[0041] Figures 1 - 13 Among them:

[0042] 1 is the base housing, 2 is the second blind plate, 3 is the second nut, 4 is the second stud bolt, 5 is the first O-ring groove, 6 is the second O-ring groove, 7 is the mounting hole, 8 is the return coolant hole, 9 is the first oil injection hole, 10 is the coolant injection hole, 11 is the second oil injection hole, 12 is the nameplate positioning hole, 13 is the third nut, 14 is the third stud bolt, 15 is the third blind plate, 16 is the oil distribution and oil collecting block, 17 is the oil collecting block mounting surface, 18 is the first side inlet surface, 19 is the first stud bolt, 20 is the first nut, 21 is the first blind plate, 22 is the first steel ring, 23 is the liquid injection level, 24 is the second side outlet surface, 25 is the second steel ring, 26 is the third steel ring, 27 is the third side outlet surface, 28 is the sewage discharge hole, 29 is the rotating control head, 30 is the anti-pollution cover, 31 is the third O-ring groove, 32 is the coolant injection groove, 33 is the fourth O-ring groove, 34 is the oil injection groove, 35 is the fifth O-ring groove, 36 is the cage base, 37 is the socket head cap screw, 38 is the coolant circulation chamber, 39 is the rectangular ring groove, 40 is the diversion outlet, 41 is the grouting inlet, 42 is the oil pipe connection, 43 is the bolt hole, 44 is the quick connector. Specific Embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] The core of the present invention is to provide a rotating blowout preventer housing assembly, which helps to cool and lubricate the rotating control head. Another core of the present invention is to provide a rotating blowout preventer device including the above-mentioned rotating blowout preventer housing assembly.

[0045] Please refer to Figures 1 to 13 .

[0046] This specific embodiment provides a rotating blowout preventer housing assembly, including:

[0047] A base housing 1, which is provided with a cavity for assembling a rotating control head 29 therein;

[0048] A coolant circulation chamber 38, which is arranged between the inner side of the base housing 1 and the outer side of the rotating control head 29;

[0049] A liquid injection level 23, which is arranged on one side of the base housing 1. A coolant return hole 8, a first oil injection hole 9, a coolant injection hole 10, and a second oil injection hole 11 are successively arranged on the liquid injection level 23;

[0050] Wherein, an oil injection groove 34 and a coolant injection groove 32 are arranged in the cavity. Lubricating oil enters the oil injection groove 34 through the first oil injection hole 9 or the second oil injection hole 11, and then flows through a reserved hole of the rotating control head 29 into the bearing chamber of the rotating control head 29; coolant enters the coolant injection groove 32 through the coolant injection hole 10, then flows through a reserved hole of the rotating control head 29 into the coolant circulation chamber 38, and finally enters the coolant return hole 8.

[0051] It should be noted that an installation groove can be arranged at the top of the base housing 1, and an anti-pollution cover 30 can be installed on the installation groove to prevent a large amount of mud from splashing out during the operation of the rotating control head 29. Moreover, the inner diameter of the anti-pollution cover 30 can be larger than the maximum outer diameter of the rotating control head 29. Therefore, it is not necessary to remove the anti-pollution cover 30 when installing or removing the rotating control head 29. In addition, a mud umbrella or an anti-overflow pipe can also be installed on this installation groove, which has a similar function. In addition, the first oil injection hole 9 and the second oil injection hole 11 have the function of one for use and one for backup to prevent the inability to use due to the blockage of a certain oil injection hole.

[0052] In the actual application process, according to the actual situation and actual needs, the shapes, structures, dimensions, positions, etc. of the base housing 1, the coolant circulation chamber 38, the liquid injection level 23, the coolant return hole 8, the first oil injection hole 9, the coolant injection hole 10, the second oil injection hole 11, the oil injection groove 34, and the coolant injection groove 32 can be determined.

[0053] When using the rotating blowout preventer housing assembly provided by the present invention, the rotating control head 29 can be placed into the cavity of the base housing 1. When lubrication of the rotating control head 29 is required, an operator can connect an oil pipe to the first oil injection hole 9 or the second oil injection hole 11 to pump lubricating oil into the first oil injection hole 9 or the second oil injection hole 11. The lubricating oil then enters the oil injection groove 34, and then flows through a reserved hole of the rotating control head 29 into the bearing chamber of the rotating control head 29 to lubricate each bearing of the rotating control head 29 to ensure the use effect of the rotating control head 29.

[0054] When it is necessary to cool down the rotary control head 29, the operator can connect the coolant pipe to the coolant injection hole 10 to pump the coolant into the coolant injection hole 10. The coolant then enters the coolant injection tank 32, flows through the reserved hole of the rotary control head 29 into the coolant circulation chamber 38, and finally the coolant enters the return coolant hole 8 and returns to the circulating coolant tank.

[0055] Since the base housing 1 is provided with a lubricating oil channel and a coolant channel inside, it is convenient to inject lubricating oil and coolant into the rotary control head 29. When installing or disassembling the rotary control head 29, there is no need for the operator to disassemble and assemble the oil and coolant pipelines at the wellhead. Moreover, a coolant circulation chamber 38 is provided between the inner side of the base housing 1 and the outer side of the rotary control head 29, which can effectively increase the cooling heat exchange area between the base housing 1 and the bearing assembly of the rotary control head 29 and improve the cooling effect on the entire rotating blowout preventer.

[0056] In summary, the rotating blowout preventer housing assembly provided by the present invention helps to cool and lubricate the rotary control head 29.

[0057] In one embodiment, two diversion outlets 40 and one grouting inlet 41 are provided on the outer peripheral side of the base housing 1. The grouting inlet 41 is located between the two diversion outlets 40, and both the diversion outlets 40 and the grouting inlet 41 are blocked by blind plates.

[0058] It should be noted that the two diversion outlets 40 and one grouting inlet 41 are blocked by blind plates during the pressure test. During on-site use, one of the diversion outlets 40 is connected to the choke manifold through a hydraulic valve and a pipeline, and the other diversion outlet 40 is connected to the shale shaker through a hydraulic valve and a pipeline. The grouting inlet 41 is connected to the mud pump through a grouting ball valve and a pipeline for grouting operations. By providing two diversion outlets 40, the slurry diversion effect during the operation of the rotating blowout preventer device can be improved.

[0059] In one embodiment, each blind plate is fixed to the outer peripheral side of the base housing 1 by a stud bolt.

[0060] It should be noted that a first side inlet surface 18, a second side outlet surface 24, and a third side outlet surface 27 can be respectively provided on the outer peripheral side of the base housing 1. The first blind plate 21 is fixed to the outer side wall of the base housing 1 on the first side inlet surface 18 by a first stud bolt 19 and a first nut 20. The second blind plate 2 is fixed to the outer side wall of the base housing 1 on the second side outlet surface 24 by a second stud bolt 4 and a second nut 3. The third blind plate 15 is fixed to the outer side wall of the base housing 1 on the third side outlet surface 27 by a third stud bolt 14 and a third nut 13.

[0061] Moreover, a first steel ring 22 can be clamped at the fitting gap between the first blind plate 21 and the first side inlet surface 18, a second steel ring 25 can be clamped at the fitting gap between the second blind plate 2 and the second side outlet surface 24, and a second steel ring 25 can be clamped at the fitting gap between the third blind plate 15 and the third side outlet surface 27 to improve the fixing effect of the blind plate. Furthermore, by fixing each blind plate to the base housing 1 with stud bolts, the device can be made more compact.

[0062] In one embodiment, at least two sewage discharge holes 28 are provided at intervals on the grouting inlet 41. Therefore, the slurry in the base housing 1 can be discharged outward through the sewage discharge holes 28. The structure is as Figure 11 shown. The cross-sectional views of the two sewage discharge holes 28 are the F-F sectional view and the G-G sectional view respectively, and the F-F sectional view and the G-G sectional view are mirror images of each other.

[0063] In one embodiment, hydraulic cylinders are distributed on opposite sides of the base housing 1, and an oil distribution and oil collection block 16 is provided on the other side of the base housing 1; there are two groups of oil circuits in the oil distribution and oil collection block 16, and three quick connectors 44 are provided outside the oil distribution and oil collection block 16. The quick connectors 44 are used to connect the hydraulic cylinders and the hydraulic control system respectively.

[0064] For example, an oil collection block mounting surface 17 can be provided on the base housing 1, and then the oil distribution and oil collection block 16 is connected to the oil collection block mounting surface 17 through bolt holes and socket head cap screws 37. Among them, the two quick connectors 44 on the same side of the upper part of the oil distribution and oil collection block 16 are respectively communicated with the connecting oil pipes 42 of the hydraulic cylinders on the same side, and one quick connector 44 at the lower part of the oil distribution and oil collection block 16 is communicated with the hydraulic control system. Moreover, the two quick connectors 44 at the upper part of the oil distribution and oil collection block 16 are respectively communicated with the quick connector 44 at the lower part of the oil distribution and oil collection block 16 through two groups of oil circuits.

[0065] When the hydraulic cylinders need to be driven to operate, the oil fluid of the hydraulic control system enters the oil distribution and oil collection block 16 through the quick connector 44 at the lower part, then flows into the quick connectors 44 at the upper part through two groups of oil circuits respectively, and then flows into the connecting oil pipes 42 of the hydraulic cylinders through the quick connectors 44 at the upper part to realize the telescopic drive of the hydraulic cylinders. By providing the oil distribution and oil collection block 16, multiple hydraulic cylinders are all communicated with the same oil distribution and oil collection block 16, and the oil distribution and oil collection block 16 distributes the oil fluid to multiple hydraulic cylinders to realize the synchronous opening and closing control of multiple hydraulic cylinders.

[0066] In one embodiment, a first O-ring groove 5 and a second O-ring groove 6 are provided at intervals on the outer wall of the top of the base housing 1 to facilitate the sealed connection with the clamp assembly. That is, after the clamp assembly is assembled, the first O-ring groove 5 and the second O-ring groove 6 can make the base housing 1 and the clamp assembly be sealed and connected to prevent the slurry from flowing out, thereby keeping the appearance of the base housing 1 clean.

[0067] In one embodiment, a third O-ring groove 31 is provided above the coolant filling tank 32, a fourth O-ring groove 33 is provided between the lower part of the coolant filling tank 32 and the upper part of the oil filling tank 34, and a fifth O-ring groove 35 is provided below the oil filling tank 34. The third O-ring groove 31, the coolant filling tank 32, the fourth O-ring groove 33, the oil filling tank 34, and the fifth O-ring groove 35 can be arranged in a matching manner at corresponding positions of the base housing 1 and the rotary control head 29.

[0068] It should be noted that when assembling the rotary control head 29, the O-rings in the fourth O-ring groove 33 and the fifth O-ring groove 35, and the rectangular ring installed in the rectangular ring groove 39 can effectively seal the rotary control head 29 and the base housing 1. Coolant is injected through the coolant injection hole 10, and the coolant flows through the coolant filling tank 32 into the reserved hole at the lower part of the outer cylinder at the lower part of the rotary control head 29, and then flows through the coolant circulation chamber 38 and returns to the circulating coolant tank of the liquid control device through the coolant return hole 8. Lubricating oil is injected through the first oil injection hole 9 or the second oil injection hole 11, enters the reserved hole of the rotary control head 29 along the oil filling tank 34, and finally enters the bearing chamber of the rotary control head 29.

[0069] In one embodiment, the top of the base housing 1 is provided with a mounting hole 7 for assembling with other components. For example, the cage base 36 of the clamp assembly can be connected to the mounting hole 7 of the base housing 1 through bolts so that the cage base 36 is assembled on the base housing 1. Of course, assembly holes can also be provided at other positions of the base housing 1 to fix the cage base 36 by using fasteners.

[0070] In one embodiment, the liquid level 23 is provided with a nameplate positioning hole 12 to fix the nameplate by using the nameplate positioning hole 12, and relevant information of the device can be marked on the nameplate.

[0071] In addition to the above-mentioned rotating blowout preventer housing assembly, the present invention also provides a rotating blowout preventer device including the rotating blowout preventer housing assembly disclosed in the above embodiment. For the structures of other parts of the rotating blowout preventer device, reference can be made to the prior art and will not be elaborated herein.

[0072] It should be noted that the first oil injection hole 9 and the second oil injection hole 11, the first side inlet surface 18 and the second side outlet surface 24 and the third side outlet surface 27, the first nut 20 and the second nut 3 and the third nut 13, the first blind plate 21 and the second blind plate 2 and the third blind plate 15, the first stud bolt 19 and the second stud bolt 4 and the third stud bolt 14, the first steel ring 22 and the second steel ring 25 and the third steel ring 26 mentioned in the present invention. Among them, the first, the second, and the third are only used to distinguish different positions and there is no order of priority.

[0073] In addition, it should be noted that the orientation or positional relationship indicated by "up and down", "inside and outside", etc. in the present invention is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of simplifying the description and understanding, 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 to the present invention.

[0074] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. Any combination of all the embodiments provided by the present invention falls within the protection scope of this invention and will not be elaborated herein.

[0075] The rotating blowout preventer device and its rotating blowout preventer housing assembly provided by the present invention have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only for helping to understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A rotating blowout preventer housing assembly, characterized in that, comprising: a base housing (1) having a cavity therein for assembling a rotating control head (29); a coolant circulation chamber (38) provided between the inner side of the base housing (1) and the outer side of the rotating control head (29); a liquid injection surface (23) provided on one side of the base housing (1), and a coolant return hole (8), a first oil injection hole (9), a coolant injection hole (10), and a second oil injection hole (11) are sequentially provided on the liquid injection surface (23); wherein, an oil injection groove (34) and a coolant injection groove (32) are provided in the cavity, lubricating oil enters the oil injection groove (34) through the first oil injection hole (9) or the second oil injection hole (11), then flows through a reserved hole of the rotating control head (29) into a bearing chamber of the rotating control head (29); coolant enters the coolant injection groove (32) through the coolant injection hole (10), then flows through a reserved hole of the rotating control head (29) into the coolant circulation chamber (38), and finally enters the coolant return hole (8).

2. The rotating blowout preventer housing assembly according to claim 1, characterized in that, two diversion outlets (40) and a grouting inlet (41) are provided on the outer peripheral side of the base housing (1), the grouting inlet (41) is located between the two diversion outlets (40), and the diversion outlets (40) and the grouting inlet (41) are both blocked by blind plates.

3. The rotating blowout preventer housing assembly according to claim 2, characterized in that, each of the blind plates is fixed to the outer peripheral side of the base housing (1) by a set screw bolt.

4. The rotating blowout preventer housing assembly according to claim 2, characterized in that, at least two sewage discharge holes (28) are provided at intervals on the grouting inlet (41).

5. The rotating blowout preventer housing assembly according to any one of claims 1 to 4, characterized in that, hydraulic cylinders are distributed on opposite sides of the base housing (1), and an oil distribution and oil collection block (16) is provided on the other side of the base housing (1); two groups of oil circuits are provided in the oil distribution and oil collection block (16), and three groups of quick connectors (44) are provided outside the oil distribution and oil collection block (16), and the quick connectors (44) are used to connect the hydraulic cylinders and the hydraulic control system respectively.

6. The rotating blowout preventer housing assembly according to any one of claims 1 to 4, characterized in that, a first O-ring groove (5) and a second O-ring groove (6) are provided at intervals on the outer wall of the top of the base housing (1).

7. The rotating blowout preventer housing assembly according to any one of claims 1 to 4, characterized in that, a third O-ring groove (31) is provided above the coolant injection groove (32), a fourth O-ring groove (33) is provided between the lower part of the coolant injection groove (32) and the upper part of the oil injection groove (34), and a fifth O-ring groove (35) is provided below the oil injection groove (34).

8. The rotating blowout preventer housing assembly according to any one of claims 1 to 4, characterized in that, mounting holes (7) for assembling with other components are provided on the top of the base housing (1).

9. The rotating blowout preventer housing assembly according to any one of claims 1 to 4, characterized in that, the liquid injection level surface (23) is provided with a nameplate positioning hole (12).

10. A rotating blowout preventer device, characterized in that, it includes the rotating blowout preventer housing assembly according to any one of claims 1-9 above.

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