Automatic installation device for blowout prevention tool in wellhead
By designing an automated installation device for blowout tools in the wellhead and using robots and hydraulic pliers to achieve automatic installation of blowout tools, the safety and efficiency of manual installation during well surges are solved, and the safety and operating efficiency of blowout tools in the wellhead are improved.
Patent Information
- Application Number
- CN202422595107.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In the prior art, when the well surges or overflows, the blowout preventing tools in the wellhead need to be manually installed, resulting in high accident risk and inability to achieve automated and timely installation.
An automatic installation device for anti-blasting tools in the wellhead is designed, including suspension devices and tool tube strings. The automatic installation and remote control of anti-blasting tools are achieved by using robots and hydraulic pliers. The removable connection of suspension joints, plug valves and oil pipes is combined to achieve automatic installation.
It improves the safety of the blowout preventing tools in the wellhead and the efficiency of well repair work, realizes the automatic installation and remote control of the blowout preventing tools, and reduces the risk of manual operation.
Smart Images
Figure CN223177502U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a workover device, and more specifically, to an automatic installation device for an internal blowout preventer tool at the wellhead. Background Art
[0002] At present, the technology of replacing manual automatic pipe string lifting and lowering equipment with small workover automation equipment has been basically mature and has been widely applied in each oilfield at the present stage. However, for well control, it is still necessary to manually install an internal blowout preventer tool (i.e., a plug valve). Once a well kick or overflow occurs in an oil and gas well, if the blowout preventer tool cannot be installed in place in time, accidents such as blowout and environmental pollution will occur. Content of the Utility Model
[0003] Based on this, it is necessary to provide an automatic installation device for an internal blowout preventer tool at the wellhead in view of the above technical problems.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] An automatic installation device for an internal blowout preventer tool at the wellhead, characterized in that the automatic installation device for an internal blowout preventer tool at the wellhead comprises a suspension device and a tool string.
[0006] The suspension device comprises a manipulator body. An active claw and a fixed claw are arranged at the head of the manipulator body. A detachable suspension bracket and a fixed clip are arranged on the fixed claw. After the suspension bracket and the fixed clip are connected to each other by screws, they are fixed on the fixed claw.
[0007] The tool string sequentially comprises a suspension joint, a plug valve and a tubing nipple from top to bottom. An axially adjustable spring seat is sleeved on the periphery of the suspension joint. A slidable thrust bearing and a spring are arranged on the outer wall of the spring seat. The spring is located below the thrust bearing. An annular limit thread ring is arranged at the top of the spring seat. The limit thread ring is detachably connected to the spring seat by threads. A locking nut is arranged on the suspension joint.
[0008] As a preferred embodiment of the utility model, a first female thread is arranged at the top of the suspension joint, an external thread of the joint is arranged on the middle outer wall of the suspension joint, and a first male thread is arranged at the bottom end of the suspension joint.
[0009] A second female thread is arranged at the top of the plug valve, and a second male thread is arranged at the bottom end of the plug valve.
[0010] A third female thread is arranged at the top of the tubing nipple, and a third male thread is arranged at the bottom end of the tubing nipple.
[0011] The top of the described spring seat is provided with an internal thread of the spring seat and an external thread of the spring seat.
[0012] The inner wall of the described limit thread ring is provided with an internal thread of the ring.
[0013] Wherein, the external thread of the first male buckle is matched with the internal thread of the second female buckle, the external thread of the second male buckle is matched with the internal thread of the third female buckle, the internal thread of the spring seat is matched with the external thread of the joint, the external thread of the spring seat is matched with the internal thread of the ring, and the lock nut is matched with the external thread of the joint.
[0014] As a preferred embodiment of the present invention, the suspension bracket includes a pair of parallel suspension arc plates. A middle piece and a support rod are arranged between the suspension arc plates. The middle piece, the support rod and the suspension arc plates are connected by welding. A number of first connection screw holes are provided on the middle piece, and a number of second connection screw holes are provided on the fixed clip. The second connection screw holes and the first connection screw holes are connected by screws.
[0015] As a preferred embodiment of the present invention, the setting direction of the middle piece is perpendicular to the suspension arc plates.
[0016] As a preferred embodiment of the present invention, a number of adjustment screw holes are provided on the suspension arc plates, and adjustment screws are provided in the adjustment screw holes.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] The present invention provides an automatic installation device for blowout preventers inside a wellhead. This automatic installation device for blowout preventers inside a wellhead is modified on the basis of the original well workover wellhead automatic equipment. It can not only automatically install blowout preventers inside the wellhead, but also achieve remote control. After being linked with the existing wellhead automatic equipment, it can greatly improve the safety of blowout prevention inside the wellhead during well workover and enhance the efficiency of well workover operations. Description of the Drawings
[0019] In order to more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0020] Figure 1 It is a three-dimensional structural schematic diagram of the automatic installation device for blowout preventers inside a wellhead of the present invention;
[0021] Figure 2 ForFigure 1 Schematic diagram of the three-dimensional structure decomposition of the downhole blowout preventer tool automatic installation device in
[0022] Figure 3 is Figure 2 Schematic diagram of the three-dimensional structure of the suspension device of the downhole blowout preventer tool automatic installation device in
[0023] Figure 4 is Figure 3 Enlarged detailed view of area A in
[0024] Figure 5 is Figure 3 Schematic diagram of the three-dimensional structure decomposition of the suspension device in
[0025] Figure 6 is Figure 5 Enlarged detailed view of area B in
[0026] Figure 7 is Figure 6 Schematic diagram of the three-dimensional structure of the suspension bracket of the suspension device in
[0027] Figure 8 is Figure 2 Schematic diagram of the three-dimensional structure decomposition of the tool string in
[0028] Figure 9 is Figure 8 Further schematic diagram of the three-dimensional structure decomposition of the tool string in
[0029] The markings in the figure are explained as follows: 1. Manipulator body; 10. Limit thread ring; 101. Inner thread of the circular ring; 11. Thrust bearing; 12. Spring; 13. Locking nut; 2. Movable claw; 3. Fixed claw; 4. Suspension bracket; 400. Adjusting screw; 41. Suspension arc plate; 411. Adjusting screw hole; 42. Middle piece; 421. First connecting screw hole; 43. Support rod; 5. Fixed clip; 51. Second connecting screw hole; 6. Suspension joint; 61. Inner thread of the first female thread; 62. Outer thread of the joint; 63. Outer thread of the first male thread; 7. Plug valve; 71. Inner thread of the second female thread; 72. Outer thread of the second male thread; 8. Short oil pipe; 81. Inner thread of the third female thread; 82. Outer thread of the third male thread; 9. Spring seat; 91. Inner thread of the spring seat; 92. Outer thread of the spring seat; S1. Suspension device; S2. Tool string. Specific embodiments
[0030] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.
[0031] AsFigure 1 and Figure 2 As shown in Figure 2 , the automatic installation device for the blowout preventer tool inside the wellhead includes a suspension device S1 and a tool string S2.
[0032] As Figures 3 to 6 shown in Figures 3 to 6 , the suspension device S1 includes a manipulator body 1. An active pawl 2 and a fixed pawl 3 are provided at the head of the manipulator body 1. A detachable suspension bracket 4 and a fixed clip 5 are provided on the fixed pawl 3. After the suspension bracket 4 and the fixed clip 5 are connected to each other by screws, they are fixed on the fixed pawl 3.
[0033] As Figure 7 shown in Figure 7 , the suspension bracket 4 includes a pair of parallel suspension arc plates 41. A middle piece 42 and a support rod 43 are provided between the suspension arc plates 41. The middle piece 42, the support rod 43, and the suspension arc plates 41 are welded together. A number of first connection screw holes 421 are provided on the middle piece 42. A number of second connection screw holes 51 are provided on the fixed clip 5. The second connection screw holes 51 are connected to the first connection screw holes 421 by screws.
[0034] It should be noted that the setting direction of the middle piece 42 is perpendicular to that of the suspension arc plates 41.
[0035] A number of adjustment screw holes 411 are provided on the suspension arc plates 41, and adjustment screws 400 are provided in the adjustment screw holes 411.
[0036] It should be noted that by using the adjustment screws 400, the levelness of the suspension bracket 4 on the manipulator body 1 can be adjusted.
[0037] As Figure 8 and Figure 9 shown in Figure 8 and Figure 9 , the tool string S2 successively includes a suspension joint 6, a plug valve 7, and a tubing nipple 8 from top to bottom. An axially adjustable spring seat 9 is sleeved outside the suspension joint 6. A slidable thrust bearing 11 and a spring 12 are provided on the outer wall of the spring seat 9. The spring 12 is located below the thrust bearing 11. An annular limit thread ring 10 is provided at the top of the spring seat 9. The limit thread ring 10 is detachably connected to the spring seat 9 by threads. A lock nut 13 is provided on the suspension joint 6.
[0038] A first female thread 61 is provided at the top of the suspension joint 6. An external thread 62 of the joint is provided on the outer wall of the middle part of the suspension joint 6. A first male thread 63 is provided at the bottom end of the suspension joint ⑥.
[0039] A second female thread 71 is provided at the top of the plug valve 7. A second male thread 72 is provided at the bottom end of the plug valve 7.
[0040] The top of the tubing nipple 8 is provided with a third female thread 81, and the bottom end of the tubing nipple 8 is provided with a third male thread 82.
[0041] The top of the spring seat 9 is provided with an inner thread 91 and an outer thread 92 of the spring seat.
[0042] The inner wall of the limit thread ring 10 is provided with an inner thread 101 of the ring.
[0043] Among them, the first male thread 63 is matched with the second female thread 71, the second male thread 72 is matched with the third female thread 81, the inner thread 91 of the spring seat is matched with the outer thread 62 of the joint, the outer thread 92 of the spring seat is matched with the inner thread 101 of the ring, and the lock nut 13 is matched with the outer thread 62 of the joint.
[0044] It should be noted that the outer thread 92 of the spring seat is matched with the inner thread 101 of the ring. The spring 12 and the thrust bearing 11 are installed on the outer wall of the spring seat 9. After the outer thread 92 of the spring seat is tightened with the inner thread 101 of the ring, it can prevent the thrust bearing 11 and the spring 12 from falling off the spring seat 9.
[0045] The spring seat 9 and the lock nut 13 can axially move upward on the hanging joint 6 and can be applicable to blowout preventers in wellheads with different lengths.
[0046] The working mode of the automatic installation device for the blowout preventer in the wellhead will be described below.
[0047] Two sets of pipe handling manipulators are symmetrically installed on the workover automatic wellhead device. During the operation of pulling out and running in the tubing, only one side of the manipulator body 1 needs to be used. Therefore, the other side of the manipulator body 1 is in a waiting state.
[0048] Before the normal tubing running and pulling operation, the suspension device S1 needs to be installed on the fixed claw 3 of the pipe supporting manipulator on the waiting side in advance. Then, the tool pipe string S2 is assembled. First, the spring 12 and the thrust bearing 11 are sleeved on the outer wall of the spring seat 9. Then, the limit thread ring 10 is tightened with the spring seat external thread 92 at the top of the spring seat 9. Next, the lock nut 13 is sleeved into the male threaded end at the lower end of the suspension joint 6, and the lock nut 13 is screwed onto the joint external thread 62 in the middle of the suspension joint 6. Then, with the spring seat internal thread 91 of the spring seat 9 facing upward, it is sleeved into the male threaded end at the lower end of the suspension joint 6 and screwed onto the joint external thread 62 in the middle of the suspension joint 6. The lock nut 13 and the spring seat 9 are screwed towards the female threaded end of the suspension joint 6 until the male thread of the suspension joint 6 is exposed. Then, the female thread of the plug valve 7 is tightened with the male thread of the suspension joint 6, and the female thread of the tubing nipple 8 is tightened with the male thread of the plug valve 7. Next, the position of the spring seat 9 on the suspension joint 6 is adjusted so that the distance from the lower end face of the male thread of the tubing nipple 8 to the lower plane of the limit thread ring 10 is equal to the distance from the upper plane of the manipulator suspension bracket 4 when the pipe supporting manipulator 1 of the workover automation device is lowered to the lowest position to the upper plane of the back-up tong when the hydraulic power tong is lowered to the lowest position. After the distance is adjusted, the lock nut 13 is tightened. Then, the tool pipe string S2 is hung on the suspension bracket 4 of the manipulator body 1 in the waiting state, so that the lower plane of the limit thread ring 10 is seated on the upper plane of the suspension bracket 4, and the upper plane of the thrust bearing 11 is lower than the lower plane of the suspension bracket 4. If the tool pipe string S2 is not vertically downward, the tool pipe string S2 can be made vertically downward by adjusting the adjusting screw hole 411 on the suspension bracket 4. Finally, the movable claw 2 is clamped.
[0049] It should be noted that the blowout preventer tool inside the wellhead must be in the open state.
[0050] When installing the blowout preventer tool inside the wellhead after running or pulling one tubing, the operator first switches the hydraulic tong reversing handle to make the hydraulic tong in the make-up working condition. If it is currently in the tubing pulling working condition, there is no need to rotate the hydraulic tong reversing handle.
[0051] Then, start the program for installing the blowout preventer tool inside the wellhead. Then, the manipulator body 1 of the suspension device S1 on the waiting side first rises to the highest position, and then the manipulator body 1 rotates to the wellhead position.
[0052] Then, the hydraulic tong advances to the threading position, the threader clamps, and the manipulator body 1 descends to the lowest position. At this time, the suspension bracket 4 installed on the manipulator body 1 gives a certain downward pressure to the spring 12 through the thrust bearing 11, and the male thread at the lower part of the tubing nipple 8 is successfully threaded with the female thread of the wellhead tubing. The threader opens, the hydraulic tong advances to the make-up position, and makes up the thread according to the set torque.
[0053] After the make-up completion condition is satisfied, the main back-up tongs open, the hydraulic tongs retract to the initial position, the movable pawl 2 opens, the manipulator body 1 rotates back to the standby position, and the operator closes the blowout preventer tool inside the wellhead.
[0054] This automatic installation device for the blowout preventer tool inside the wellhead utilizes some functions of the original workover automation equipment. The pipe support manipulator is used to suspend, lift and rotate the blowout preventer tool string inside the wellhead, and the automatic hydraulic tongs are used to butt and make up the tubing nipple. It can not only automatically install the blowout preventer tool inside the wellhead, but also realize remote control. After being linked with the existing workover wellhead automation equipment, it can greatly improve the safety of the workover wellhead blowout prevention and enhance the workover operation efficiency.
[0055] Without being limited thereto, any changes or substitutions that are conceived without creative work shall be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope defined by the claims.
Claims
1. An automatic installation device for blowout preventer tools inside the wellhead, characterized in that, The described automatic installation device for blowout preventer tools inside the wellhead includes a suspension device (S1) and a tool string (S2). The suspension device (S1) includes a manipulator body (1). At the head of the manipulator body (1), there are a movable claw (2) and a fixed claw (3). On the fixed claw (3), there are a detachable suspension bracket (4) and a fixed clip (5). After the suspension bracket (4) and the fixed clip (5) are connected to each other by screws, they are fixed on the fixed claw (3). The tool string (S2) successively includes a suspension joint (6), a plug valve (7), and a tubing nipple (8) from top to bottom. An axially adjustable spring seat (9) is sleeved around the periphery of the suspension joint (6). A slidable thrust bearing (11) and a spring (12) are provided on the outer wall of the spring seat (9). The spring (12) is located below the thrust bearing (11). An annular limit thread ring (10) is provided at the top of the spring seat (9). The limit thread ring (10) is detachably connected to the spring seat (9) by threads. A locking nut (13) is provided on the suspension joint (6).
2. The automatic installation device for blowout preventer tools inside the wellhead according to claim 1, characterized in that At the top of the suspension joint (6), there is a first female thread (61). On the middle outer wall of the suspension joint (6), there is a joint external thread (62). At the bottom end of the suspension joint (6), there is a first male thread (63). At the top of the plug valve (7), there is a second female thread (71). At the bottom end of the plug valve (7), there is a second male thread (72). At the top of the tubing nipple (8), there is a third female thread (81). At the bottom end of the tubing nipple (8), there is a third male thread (82). At the top of the spring seat (9), there are a spring seat internal thread (91) and a spring seat external thread (92). On the inner wall of the limit thread ring (10), there is an annular internal thread (101). Among them, the first male thread (63) is matched with the second female thread (71), the second male thread (72) is matched with the third female thread (81), the spring seat internal thread (91) is matched with the joint external thread (62), the spring seat external thread (92) is matched with the annular internal thread (101), and the locking nut (13) is matched with the joint external thread (62).
3. The automatic installation device for the blowout preventer tool inside the wellhead according to claim 1, characterized in that, The described suspension bracket (4) includes a pair of suspension arc plates (41) arranged in parallel. A middle piece (42) and a support rod (43) are provided between the suspension arc plates (41). The middle piece (42), the support rod (43), and the suspension arc plates (41) are connected by welding. A number of first connection screw holes (421) are provided on the middle piece (42). A number of second connection screw holes (51) are provided on the fixed clamping piece (5). The second connection screw holes (51) and the first connection screw holes (421) are connected by screws.
4. The automatic installation device for the blowout preventer tool inside the wellhead according to claim 3, characterized in that The arrangement direction of the middle piece (42) is perpendicular to that of the suspension arc plates (41).
5. The automatic installation device for the blowout preventer tool inside the wellhead according to claim 3, characterized in that, A number of adjustment screw holes (411) are provided on the suspension arc plates (41), and adjustment screws (400) are provided in the adjustment screw holes (411).