Baffle rearrangement tool and method
By designing a baffle rearrangement tool for retractable underground safety valves in the pipeline, the eccentric contact and beveled surface structure is used to solve the problem of loss of barrier function caused by baffle fracture, and efficient and safe baffle rearrangement is achieved, avoiding the existing high-cost treatment method.
Patent Information
- Application Number
- CN202280101446.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-10-28
- Publication Date
- 2025-08-12
AI Technical Summary
In pipe retractable underground safety valves, the baffle cannot operate after breaking, resulting in the loss of barrier function. Existing solutions such as drilling rig installation and corrosion treatment are costly and inefficient.
A baffle rearrangement tool is designed, including a cylindrical guide portion, a tip portion and a rearrangement portion. By eccentric contact and beveled surface structure, the break baffle can be rearranged in the drill hole to avoid drilling rig installation and corrosion treatment.
Achieves no need for well repair operations, reduce labor and time, avoid damage to other components, improve safety and reliability, and ensure reliable removal of baffles.
Smart Images
Figure CN120476242A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a barrier rearranging tool for inserting into a borehole to rearrange a fracture barrier inside a pipe-retrievable subterranean safety valve and a method for rearranging a fracture barrier inside a pipe-retrievable subterranean safety valve. Background Art
[0002] In the oil and gas production sector, it is essential to ensure that the oil and gas flow can be reliably interrupted in the event of maintenance work, safety-critical events, and general production outages. Otherwise, if oil and gas escape uncontrolled into the environment, considerable environmental damage could occur.
[0003] Therefore, ensuring well integrity is a core element in oil and gas production. Typically, well integrity is associated with maintaining well control with adequate barriers. The core element for ensuring well integrity is the presence of two independent well barriers at every stage of the well's life. This is not only widespread industry practice but also a requirement of various standards, some of which are international standards, such as ISO 16530.
[0004] Common barriers include pipe-retractable subsurface safety valves, also known as TR-SSSVs. These valves consist of a flapper and a movable tube. The flapper is mounted in a movable manner via a hinge and controls the oil and / or gas flow depending on the position of the movable tube. This function is described in further detail below.
[0005] Figures 9a and 9b illustrate a schematic pipeline-retractable underground safety valve 80, with Figure 9a showing the open state and Figure 9b the closed state. To open the pipeline-retractable underground safety valve 80 shown in Figure 9b, liquid is pressed into the reservoir 82 via the hydraulic control line 81. When sufficient pressure is applied, the movable tube 83 moves downward against the spring element 86, and the baffle 85 rotates into the recess 84, as shown in Figure 9a. When the pressure in the hydraulic control line 81 drops below a threshold, the liquid in the reservoir 82 is displaced into the hydraulic control line 81, and the movable tube 83 is pushed upward again by the spring element 86. Consequently, the baffle 85 also moves back to the horizontal closed position, for example, by means of a corresponding spring at the hinge.
[0006] However, experience has shown that in pipe-retrievable subsurface safety valves, the baffle sometimes becomes detached at its hinge. The baffle then becomes inoperable within the pipe-retrievable subsurface safety valve. Consequently, because the baffle at least partially blocks fluid flow, its barrier function is no longer guaranteed and / or only limited production is possible. Furthermore, access to the borehole below the pipe-retrievable subsurface safety valve is restricted. Therefore, it is not possible to place a replacement barrier in this area of the borehole to restore well integrity.
[0007] In practice, the problem of a broken flapper is typically addressed by removing the flapper from a pipeline-retrievable subsurface safety valve. This requires a well intervention operation and / or drilling rig installation. For example, a drill string is inserted into the borehole to crush the flapper. Another option is to etch the broken flapper, for example, using thermite. Existing solutions for treating broken flappers are often material-intensive, labor-intensive, and / or time-consuming, and are therefore often very expensive.
[0008] It is therefore an object of the present disclosure to provide tools and methods that at least partially overcome the above-mentioned disadvantages. Summary of the Invention
[0009] This object is achieved by a barrier rearranging tool and a method for rearranging a rupture barrier inside a pipeline retractable subsurface safety valve as defined in the independent claims. Further aspects of the present disclosure are defined in the dependent claims.
[0010] In particular, this object is achieved by a baffle repositioning tool for inserting into a borehole to reposition a fracture baffle within a pipe-retrievable subsurface safety valve. The borehole may be used to produce oil and / or natural gas. Furthermore, the borehole may include a pipeline configured to conduct oil and / or natural gas from an underground reservoir to the surface. Furthermore, the borehole may be provided with other completion components, such as a casing liner. The pipe-retrievable subsurface safety valve within the borehole may be attached to the pipeline configured to conduct oil and / or natural gas.
[0011] The tool includes a generally cylindrical guide portion having a first radius and a longitudinal axis. The cylindrical guide portion can be used to align the longitudinal axis of the tool along the central axis of a borehole, and in particular, the central axis of a pipe within the borehole. More particularly, the first radius can be adapted to the inner diameter of the pipe.
[0012] Furthermore, the tool includes a tip portion at the first end of the tool for establishing initial contact with the fracture barrier, wherein the tip portion is radially displaced outward by a second radius relative to the longitudinal axis. This ensures that the tool does not establish initial contact with the center point of the barrier, but rather with an off-center point. This has been shown to make it easier to move the barrier from its resting position than via center contact. In particular, this can cause the off-center point to be pushed downward, thereby causing another area of the barrier to move upward.
[0013] The tool also includes a rearrangement portion for rearranging the fracture barrier, wherein the rearrangement portion is disposed between the tip portion and the guide portion and provides a contact surface for moving the fracture barrier. The contact surface is shaped such that, after the fracture barrier establishes initial contact with the tip portion, when the tool is moved against the fracture barrier, the fracture barrier first erects and, after erection, is pushed into a recess of the pipeline-retractable underground safety valve. The recess may be that portion of the pipeline-retractable underground safety valve in which the barrier is disposed while the valve is still in operation and in an open state. Pushing the barrier into the recess requires moving the barrier radially outward, as viewed from the longitudinal axis of the cylindrical guide portion.
[0014] Furthermore, the tool comprises a fastening device at the second end of the tool for fastening the tool to a support device that allows the tool to be inserted into the drill hole. The support device may comprise a cable and / or a wire rope. For example, the fastening device may comprise a thread to which the support device is attached by means of a corresponding counter-thread.
[0015] Pipe-retractable subsurface safety valves, also known as TR-SSSVs, are well known and widely used in industry. Examples of such valves are described above in the prior art section with reference to Figures 9a and 9b of this disclosure. Furthermore, a drawback of such pipe-retractable subsurface safety valves is that the flapper may break and become lodged within the valve. In this disclosure, a "broken flapper" may refer to a pipe-retractable subsurface safety valve flapper that has become loose from its internal suspension and may be located in the lower region of the valve. It should be understood that the flapper may become dislodged from its suspension due to various reasons, such as fatigue, straight-line operation, and / or coiled-line operation.
[0016] The baffle rearrangement tool according to the present disclosure has several advantages, three of which will be described below.
[0017] First, workover operations and / or drilling rig installations can be avoided. For example, there is no need to insert a drilling tool into the borehole to crush the barrier. Therefore, the labor and time required to remove the broken barrier are reduced.
[0018] Second, because the baffle is stored inside the retractable underground safety valve, damage to other components, such as the drilled pipeline, during the crushing of the baffle is avoided. Furthermore, loose components that may be generated by crushing the baffle do not cause damage. Overall, the baffle relocation tool provides enhanced safety.
[0019] Third, it was demonstrated that the baffle can be reliably removed in a single step. When removing a broken baffle using drilling or thermite, parts of the baffle may remain in the valve, requiring additional intervention. For example, this may be due to the edge of the drill bit remaining in the valve. Therefore, the present tool achieves improved reliability.
[0020] Preferably, the tip portion and the rearrangement portion are integrally formed. "Integrally formed" may refer to the aspect that these portions are made from a single component. Thus, the tip portion can transition seamlessly into the rearrangement portion. This can avoid complex assembly of the tool.
[0021] Preferably, the tip portion and / or the rearrangement portion is formed by a chamfered barrel. The contact surface may be formed by a chamfered surface. It will be understood that the chamfered surface does not necessarily need to be planar. In particular, the chamfered surface may be shaped as described below.
[0022] Preferably, the contact surface includes a first region adjacent to the tip portion and a second region spaced apart from the tip portion along the longitudinal axis, such that the first region is disposed between the second region and the tip portion, wherein a first angle of inclination between the first region and the longitudinal axis is greater than a second angle of inclination between the second region and the longitudinal axis. When determining the first and / or second angles of inclination, each is preferably determined as an acute angle. Having the first angle of inclination greater than the second angle of inclination has been shown to facilitate erecting the baffle and subsequently pushing the baffle into the recess.
[0023] Preferably, the first inclination angle is in the range of 15° to 35°, optionally 17° to 30°, further optionally 18° to 28°, and even further optionally 20° to 26°. These angle ranges have been found to be advantageous because they allow for the reliable erection of most fractured baffles. This applies in particular to the tip portion and / or rearrangement portion formed by beveling the barrel. The angle thus allows for a particularly optimized engagement of the cutting edge of the contact surface with the baffle.
[0024] Preferably, the second inclination angle is in the range of 0.5° to 9.5°, optionally 1° to 8°, further optionally 2° to 7°, and even further optionally 3° to 8°. These angle ranges allow translation of the tool along the longitudinal axis, thereby causing radial movement of the baffle relative to the longitudinal axis of the cylindrical guide portion. In particular, binding between the contact surface and the baffle, as observed at larger angles, is avoided.
[0025] Preferably, the first region transitions to the second region via a first rounded transition region. The rounded transition region prevents the baffle from getting stuck and / or hooking with the tool. In particular, this is prevented by avoiding edges on the contact surface.
[0026] Preferably, the radius of curvature of the first transition region is in the range of 80 mm to 160 mm, optionally 100 mm to 140 mm, and further optionally 110 mm to 130 mm. These value ranges have proven to be advantageous because, on the one hand, sticking and / or hooking are prevented, and on the other hand, no transition region is formed that is so large as to impede the function of the first region and / or the second region as described above.
[0027] Preferably, the contact surface further includes a third region spaced from the tip portion along the longitudinal axis, such that the second region is disposed between the first region and the third region, wherein a third angle of inclination between the third region and the longitudinal axis is greater than the second angle of inclination. When determining the third angle of inclination, it is preferably determined as an acute angle. Having the third angle of inclination greater than the second angle of inclination has been shown to facilitate and / or accelerate the final insertion of the baffle into the recess. The third angle of inclination may be greater than the second angle of inclination because, by the time the baffle contacts the third region, the baffle is already substantially upright, making it less likely to become stuck and / or hooked.
[0028] Preferably, the third inclination angle is in the range of 10° to 25°, optionally 11° to 20°, further optionally 12° to 18°, and even further optionally 13° to 16°. These ranges have proven to be particularly advantageous for pushing the upright baffle into the recess.
[0029] Preferably, the second region transitions to the third region via a second rounded transition region. The rounded transition region prevents the baffle from getting stuck and / or hooking with the tool, in particular by avoiding edges on the contact surface.
[0030] Preferably, the radius of curvature of the second transition region is in the range of 110 mm to 190 mm, optionally 130 mm to 170 mm, and further optionally 14 mm to 16 mm. These value ranges have proven to be advantageous because, on the one hand, sticking and / or hooking are prevented, and, on the other hand, no transition region is formed that is so large as to impede the function of the second and / or third regions.
[0031] Preferably, the tool further comprises a motor configured to rotate the rearrangement portion about the longitudinal axis. The motor is preferably an electric motor. The motor allows the rearrangement portion and / or the tip portion to be positioned before contacting the baffle, such that the baffle is pushed directly into the recess when the tool is moved against the baffle. Alternatively, the tool can be rotated after erecting the baffle to position the baffle in the recess.
[0032] Preferably, the motor is configured to rotate the rearrangement portion relative to the guide portion. Thus, the guide portion is prevented from sliding against the pipeline and / or the pipeline retractable underground safety valve. Furthermore, the inertia of the guide portion may allow the rearrangement portion to be accurately rotated relative to the baffle.
[0033] Preferably, the tool further comprises a camera, wherein the camera is optionally arranged to face the tip portion substantially along the longitudinal axis. The camera allows for more precise positioning of the tool. Consequently, the baffle can be positioned even more reliably in the recess. Furthermore, any additional damage that has occurred can be detected.
[0034] Preferably, the tool further includes a through-hole extending substantially perpendicularly to the longitudinal axis through the rearrangement portion to provide camera visibility radially outward from the longitudinal axis. This allows the position of the recess within the retractable pipeline safety valve to be detected. Furthermore, this configuration allows control of whether the baffle is properly positioned within the recess. For example, this prevents the baffle from being incorrectly positioned, i.e., opposite to its operating position. This incorrect positioning could potentially inhibit actuation of the retractable pipeline safety valve when the retractable pipeline abuts the baffle.
[0035] Preferably, at least one radially outer portion of the through hole is covered by a transparent shield. Such a transparent shield can prevent damage and / or contamination of the camera. The transparent shield can comprise a "plexiglass" material.
[0036] Preferably, the tool further comprises a recess formed in the contact surface substantially along the longitudinal axis for providing visibility of the tip portion to the camera.This allows the position of the tip portion to be accurately monitored while protecting the camera.
[0037] Preferably, the recess and the through hole define a common volume in which the camera is arranged.Thus, the camera can monitor the surroundings of the tool in the direction of the tip part, ie along the longitudinal axis as well as perpendicularly to the longitudinal axis.
[0038] Preferably, the camera is a movable camera, a fisheye camera and / or a wide-angle camera. These cameras have proven to be beneficial because they provide a good overview of the tool's environment and in particular of the actual position of the break stop before and during use of the tool.
[0039] Preferably, the guide portion and / or the repositioning portion comprises carbon steel, optionally chromium-alloyed, wherein, further optionally, at least 10% by weight of the carbon steel comprises chromium. These materials allow for meeting high mechanical and / or corrosion requirements. For example, damage to the tool by the baffle can be avoided, while hydrogen sulfide corrosion can be prevented.
[0040] Preferably, the first radius of the guide portion defines the maximum diameter of the tool and is optionally within the range of 50 mm to 150 mm, further optionally 60 mm to 120 mm, and even further optionally 70 mm to 100 mm. By defining the maximum diameter of the tool by the first radius of the guide portion, it is possible to prevent other parts of the tool, such as the tip portion and / or the relocation portion, from accidentally contacting the pipeline and / or the pipeline-retractable underground safety valve. Furthermore, this range allows the tool to be used with most commercially used pipelines.
[0041] Preferably, the tool has a length in the range of 0.3 m to 2 m, preferably 0.35 m to 1.4 m, further preferably 0.4 m to 1.2 m, and even further preferably 0.5 m to 1.1 m. These tool lengths allow the contact surface to be provided with an appropriate length and / or inclination. For example, a shorter tool length may require the contact surface to be provided at a greater angle relative to the longitudinal axis, which may promote sticking.
[0042] Preferably, the ratio of the first radius to the second radius is in the range of 0.4 to 1, optionally 0.5 to 0.99, further optionally 0.7 to 0.98, and even further optionally 0.9 to 0.96. These regions have proven to be advantageous, as the baffle can be reliably erected.
[0043] Furthermore, the above-mentioned object is achieved by a method for rearranging a fracture barrier within a pipeline-retractable subsurface safety valve. Since both the method and the aforementioned tool involve rearranging a fracture barrier within a pipeline-retractable subsurface safety valve, it should be understood that the features and / or advantages described with respect to the tool can apply to the method, and vice versa.
[0044] The method comprises the following steps in a given order: (a) providing a damper rearranging tool, preferably as described above; (b) inserting the tool into a borehole comprising a pipe-retrievable subsurface safety valve having a fracture damper, and (c) moving the tool against the fracture damper, thereby erecting the fracture damper and, after erection, pushing the fracture damper into a recess of the pipe-retrievable subsurface safety valve.
[0045] Preferably, the method further comprises step (d) of actuating a movable pipe of the pipeline-retractable subsurface safety valve to retain the fracture barrier within the recess, wherein this step is performed after moving the tool against the fracture barrier. The movable pipe may be actuated as described in the prior art section with respect to Figures 9a and 9b.
[0046] Preferably, the method further comprises a final step (e) of permanently fixing the movable tube in the downward position to retain the fracture barrier within the recess. For example, the movable tube may be locally pressed in from the inside so as to form an undercut that holds the movable tube in place.
[0047] Preferably, after performing the method steps, a replacement barrier may be installed. For example, a cable-retractable underground safety valve may be installed. BRIEF DESCRIPTION OF THE DRAWINGS
[0048] Hereinafter, the accompanying drawings will be briefly described:
[0049] Figure 1 shows a baffle repositioning tool according to a first embodiment of the present invention in contact with a broken baffle;
[0050] Figure 2 Shown in side view Figure 1 baffle rearrangement tool;
[0051] Figure 3 Shown in side view Figure 1 The baffle rearrangement tool, where the viewing plane is aligned with Figure 2 Compared to rotated 90 degrees;
[0052] Figure 4 Shown in a three-dimensional diagram Figure 1 baffle rearrangement tool;
[0053] Figure 5 A baffle rearrangement tool according to a second embodiment of the present invention is shown in a perspective view;
[0054] Figure 6 Shown in side view Figure 5 Technical diagram of the baffle rearrangement tool;
[0055] Figure 7 Shown in side view Figure 5 Technical drawing of the baffle rearrangement tool, where the viewing plane is aligned with Figure 6 Compared to rotated 90 degrees;
[0056] Figures 8a to 8c A method according to an embodiment of the present invention is shown;
[0057] Figures 9a and 9b show schematically a prior art pipeline retractable underground safety valve; and
[0058] Figure 10 A flow chart showing a method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION
[0059] Figure 1 、 Figure 2 、 Figure 3 and Figure 4 FIG. 1 shows a baffle rearrangement tool 1 according to a first embodiment of the present invention. Figures 8a to 8c A tool 1 of a first embodiment is also depicted in FIG. 1 and the method 100 according to the invention is performed using the tool 1 .
[0060] The tool 1 comprises a tool having a first radius r1 and a longitudinal axis a (see Figure 3 ) of the cylindrical guide portion 10. The first radius r1 of the guide portion defines the maximum diameter of the tool and is optionally in the range of 50 mm to 150 mm, further optionally 60 mm to 120 mm, and even further optionally 70 mm to 100 mm.
[0061] Preferably, the length of the tool 1 is in the range of 0.3m to 2m, optionally 0.35m to 1.4m, further optionally 0.4m to 1.2m, and even further optionally 0.5m to 1.1m.
[0062] like Figure 8c As shown, the guide portion 10 is shaped to align the tool 1 in the pipe so that the tool 1 can essentially only perform translations along and rotations about the longitudinal axis a.
[0063] Furthermore, the tool 1 comprises a tip portion 20 at a first end of the tool 1. Figure 1 As shown, the tip portion 20 establishes initial contact with the fracture barrier 5. The tip portion 20 is radially displaced outward by a second radius r2 relative to the longitudinal axis a. Preferably, the ratio of the first radius r1 to the second radius r2 is in the range of 0.4 to 1, optionally 0.5 to 0.99, further optionally 0.7 to 0.98, and even further optionally 0.9 to 0.96.
[0064] Furthermore, the tool 1 comprises a rearrangement portion 30 arranged between the tip portion 20 and the guide portion 10 and providing a contact surface 40. As shown, the tip portion 20 and the rearrangement portion 30 are formed integrally, ie by chamfering the barrel.
[0065] The contact surface 40 includes a first region 41 adjacent to the tip portion 20 and a second region 42 spaced apart from the tip portion 20 along the longitudinal axis a, such that the first region 41 is disposed between the second region 42 and the tip portion 20. Thus, a first inclination angle α between the first region 41 and the longitudinal axis a is greater than a second inclination angle β between the second region 42 and the longitudinal axis a. Preferably, the first inclination angle α is in the range of 15° to 35°, optionally 17° to 30°, further optionally 18° to 28°, and even further optionally 20° to 26°. Preferably, the second inclination angle β is in the range of 0.5° to 9.5°, optionally 1° to 8°, further optionally 2° to 7°, and even further optionally 3° to 8°.
[0066] The contact surface 40 further includes a third region 44 spaced apart from the tip portion 20 along the longitudinal axis a, such that the second region 42 is arranged between the first region 41 and the third region 44, wherein a third inclination angle γ between the third region 44 and the longitudinal axis a is greater than the second inclination angle β. Preferably, the third inclination angle γ is in the range of 10° to 25°, optionally 11° to 20°, further optionally 12° to 18°, and even further optionally 13° to 16°.
[0067] The first region 41 transitions to the second region 42 via a first rounded transition region 43. Preferably, the radius of curvature of the first transition region 43 is in the range of 80 mm to 160 mm, optionally 100 mm to 140 mm, and further optionally 110 mm to 130 mm.
[0068] The second region 42 transitions to the third region 44 via a second rounded transition region 45. Preferably, the radius of curvature of the second transition region 45 is in the range of 110 mm to 190 mm, optionally 130 mm to 170 mm, and further optionally 14 mm to 16 mm.
[0069] The tool 1 further comprises a motor (not explicitly shown) configured to rotate the rearrangement portion 30 about the longitudinal axis a and relative to the guide portion 10 .
[0070] The tool 1 further includes a fisheye camera 60 arranged to face the tip portion 20 along the longitudinal axis a. Specifically, the tool 1 further includes a through hole 31 in which the camera 60 is arranged, and the through hole 31 extends through the rearrangement portion 30 substantially perpendicular to the longitudinal axis a. Figure 1 As shown, a radially outer portion of the through hole 31 is covered by a transparent shield 32. Furthermore, the tool 1 comprises a recess 46 formed into the contact surface 40 substantially along the longitudinal axis a, wherein the recess 46 and the through hole 31 define a common volume in which the camera 60 is arranged.
[0071] Figure 5 、 Figure 6 and Figure 7 A second embodiment of a baffle rearrangement tool 2 according to the present invention is shown. The second embodiment of the tool 2 is simpler in construction and differs primarily from the first embodiment of the tool 1 in that the tool 2 lacks a camera and the corresponding recess and through-hole. Other features described with respect to the first embodiment of the tool 1 also apply to the second embodiment of the tool 2.
[0072] Tool 2 is easier to manufacture and is very robust, but without the operator's sight, precise positioning of tool 2 relative to baffle 5 cannot be achieved during use. Instead, baffle 5 must first be erected by moving tool 2 in the longitudinal direction, if necessary by hitting baffle 5 multiple times, and rotating tool 2 via cables and / or wire ropes. Baffle 5 can then be inserted into the recess by rotating tool 2. However, in the case of tool 2 of the second embodiment, it is not possible to visually determine whether the baffle is correctly positioned in the recess. For example, if the baffle is not positioned correctly, that is, rotated 180° to the working position, the movable pipe of the pipeline-retractable underground safety valve may not be able to move downward to hold baffle 5 in place in the recess.
[0073] like Figure 6 and Figure 7 As shown, the second dam relocation tool 2 comprises fastening means 50 in the form of threads 50 for fastening the tool to a cable and / or wire rope.
[0074] Figures 8a to 8c as well as Figure 10 A method 100 for rearranging a fracture barrier 5 within a pipeline-retrievable subsurface safety valve 80 according to the present invention is illustrated. Method 100 includes a first step 110 of providing 110 a barrier rearranging tool 1, 2, preferably as described above. Then, in step 120, the tool 1, 2 is inserted into a borehole containing the pipeline-retrievable subsurface safety valve 80 having the fracture barrier 5. It should be understood that the tool 1, 2 can also be inserted into a pipeline formed by a borehole. Subsequently, in step 130, the tool 1, 2 is moved against the fracture barrier 5, which is thereby erected and subsequently pushed into the recess 84 of the pipeline-retrievable subsurface safety valve 80.
[0075] As shown in FIG9 , the method 100 may further include step 140 , namely actuating the movable pipe 83 of the pipeline retractable underground safety valve 80 to retain the fracture barrier 5 in the recess 84 . Figures 8a to 8c , the step 140 will be in the following Figure 8c The illustrated process is performed after the baffle 5 has been pushed into the recess 84 .
[0076] Finally, in a final step 150, the movable tube 83 may be permanently fixed or locked in the downward position to retain the break stop 5 within the pocket 84. This ensures that even if hydraulic actuation of the TR-SSSV movable tube 83 fails, the break stop 5 is retained within the pocket 84 under any other circumstances.
[0077] Reference Signs List
[0078] 1, 2 Baffle Rearrangement Tool
[0079] 5 Broken baffle
[0080] 10 Cylindrical guide part
[0081] 20 Tip part
[0082] 30 Rearrange Section
[0083] 31 through holes
[0084] 32 Transparent Shield
[0085] 40 contact surface
[0086] 41 First Area
[0087] 42 Second Area
[0088] 43 First rounded transition area
[0089] 44 Third Area
[0090] 45 Second rounded transition area
[0091] 46 recess
[0092] 50 Fastening device
[0093] 60 Camera
[0094] a Longitudinal axis
[0095] r1 first radius
[0096] r2 Second radius
[0097] α First tilt angle
[0098] β Second tilt angle
[0099] γ The third tilt angle
[0100] 80 Pipeline Retractable Underground Safety Valve
[0101] 81 Hydraulic control line
[0102] 82 Reservoir
[0103] 83 Removable tube
[0104] 84 concave
[0105] 85 Function baffle
[0106] 86 Spring element
[0107] 100 Method for relocating a broken baffle
[0108] 110 Provide baffle rearrangement tool
[0109] 120 Insert the tool into the drill hole
[0110] 130 Move the tool against the broken stop
[0111] 140 Actuating the movable tube
[0112] 150 The removable tube is permanently fixed.
Claims
1. A baffle rearrangement tool (1; 2) for inserting into a borehole to rearrange a fracture baffle (5) inside a pipeline retractable underground safety valve (80), the tool (1; 2) comprising: a substantially cylindrical guide portion (10) having a first radius (r1) and a longitudinal axis (a); a tip portion (20) located at a first end of the tool (1; 2) for establishing initial contact with the fracture barrier (5), wherein the tip portion (20) is displaced radially outwardly by a second radius (r2) relative to the longitudinal axis (a); a rearrangement portion (30) for rearranging the fracture barrier (5), wherein the rearrangement portion (30) is arranged between the tip portion (20) and the guide portion (10) and provides a contact surface (40) for moving the fracture barrier (5), and Fastening means (50) are located at the second end of the tool (1; 2) for fastening the tool (1; 2) to a support device allowing the tool (1; 2) to be inserted into the borehole.
2. The baffle rearrangement tool (1; 2) according to the preceding claim, wherein The tip portion (20) and the rearrangement portion (30) are integrally formed.
3. The baffle rearrangement tool (1; 2) according to any one of the preceding claims, wherein The tip portion (20) and / or the rearrangement portion (30) are formed by a chamfered cylinder.
4. The baffle rearrangement tool (1; 2) according to any one of the preceding claims, wherein The contact surface (40) comprises: a first region (41) adjacent to the tip portion (20), and a second region (42) spaced apart from the tip portion (20) along the longitudinal axis (a) such that the first region (41) is arranged between the second region (42) and the tip portion (20), wherein a first inclination angle (α) between the first region (41) and the longitudinal axis (a) is greater than a second inclination angle (β) between the second region (42) and the longitudinal axis (a).
5. The baffle rearrangement tool (1; 2) according to the preceding claim, wherein The first inclination angle (α) is in the range of 15° to 35°, optionally 17° to 30°, further optionally 18° to 28°, and even further optionally 20° to 26°.
6. The baffle rearrangement tool (1; 2) according to any one of claims 4 or 5, wherein The second tilt angle (β) is in the range of 0.5° to 9.5°, optionally 1° to 8°, further optionally 2° to 7°, and even further optionally 3° to 8°.
7. The baffle rearrangement tool (1; 2) according to any one of claims 4 to 6, wherein: The first region (41) transitions to the second region (42) via a first rounded transition region (43).
8. Baffle rearrangement tool (1; 2) according to the preceding claim, wherein The radius of curvature of the first transition region (43) is in the range of 80 mm to 160 mm, optionally 100 mm to 140 mm, and further optionally 110 mm to 130 mm.
9. The baffle rearrangement tool (1; 2) according to any one of claims 4 to 8, wherein: The contact surface (40) further comprises: a third region (44) spaced apart from the tip portion (20) along the longitudinal axis (a) such that the second region (42) is arranged between the first region (41) and the third region (44), wherein a third inclination angle (γ) between the third region (44) and the longitudinal axis (a) is greater than the second inclination angle (β).
10. Baffle rearrangement tool (1; 2) according to the preceding claim, wherein The third inclination angle (γ) is in the range of 10° to 25°, optionally 11° to 20°, further optionally 12° to 18°, and even further optionally 13° to 16°.
11. The baffle rearrangement tool (1; 2) according to any one of claims 9 to 10, wherein: The second region (42) transitions into the third region (44) via a second rounded transition region (45).
12. Baffle rearrangement tool (1; 2) according to the preceding claim, wherein The radius of curvature of the second transition region (45) is in the range of 110 mm to 190 mm, optionally 130 mm to 170 mm, and further optionally 14 mm to 16 mm.
13. The baffle rearrangement tool (1) according to any one of the preceding claims, wherein The tool (1) further comprises a motor configured to rotate the rearrangement portion (30) about the longitudinal axis (a).
14. Baffle rearrangement tool (1) according to the preceding claim, wherein: The motor is configured to rotate the rearrangement portion (30) relative to the guide portion (10).
15. The baffle rearrangement tool (1; 2) according to any one of the preceding claims, wherein The tool (1) further comprises a camera (60), wherein the camera (60) is arranged to face the tip portion (20), optionally substantially along the longitudinal axis (a).
16. Baffle rearrangement tool (1) according to the preceding claim, wherein The tool (1) further comprises a through hole (31) extending through the rearrangement portion (30) substantially perpendicular to the longitudinal axis (a) to provide visibility of the camera (60) radially outward from the longitudinal axis (a).
17. Baffle rearrangement tool (1) according to the preceding claim, wherein: At least one radially outer portion of the through hole (31) is covered by a transparent protective cover (32).
18. The baffle rearrangement tool (1) according to any one of claims 15 to 17, wherein: The tool (1) further comprises a recess (46) formed in the contact surface (40) substantially along the longitudinal axis (a) for providing visibility of the tip portion (20) to the camera (60).
19. The baffle rearrangement tool (1) according to claim 18 and one of claims 16 or 17, wherein: The recess (46) and the through hole (31) define a common volume, and the camera (60) is arranged in the common volume.
20. The baffle rearrangement tool (1) according to any one of claims 15 to 19, wherein: The camera (60) is a movable camera, a fisheye camera and / or a wide-angle camera.
21. A flap rearrangement tool (1; 2) according to any one of the preceding claims, wherein The guide portion (10) and / or the rearrangement portion (30) comprises carbon steel, wherein the carbon steel is optionally alloyed with chromium, wherein, further optionally, at least 10 weight % of the carbon steel is chromium.
22. A flap rearrangement tool (1; 2) according to any one of the preceding claims, wherein The first radius (r1) of the guide portion (10) defines the maximum diameter of the tool (1; 2) and is optionally in the range of 50 mm to 150 mm, further optionally 60 mm to 120 mm, and even further optionally 70 mm to 100 mm.
23. A flap rearrangement tool (1; 2) according to any one of the preceding claims, wherein The length of the tool (1; 2) is in the range of 0.3m to 2m, optionally 0.35m to 1.4m, further optionally 0.4m to 1.2m, and even further optionally 0.5m to 1.1m.
24. A flap rearrangement tool (1; 2) according to any one of the preceding claims, wherein A ratio of the first radius (r1) to the second radius (r2) is in the range of 0.4 to 1, optionally 0.5 to 0.99, further optionally 0.7 to 0.98, and even further optionally 0.9 to 0.
96.
25. A method (100) for rearranging a rupture barrier (5) inside a pipeline retractable underground safety valve (80), the method (100) comprising the following steps in a given order: a) providing (110) a baffle rearrangement tool (1; 2), preferably according to any one of the preceding claims; b) inserting (120) the tool (1; 2) into a borehole comprising the pipeline retractable subsurface safety valve (80) having the rupture barrier (5), and c) moving (130) the tool (1; 2) against the rupture barrier (5), thereby erecting the rupture barrier (5) and, after erection, pushing the rupture barrier (5) into the recess (84) of the pipeline retractable underground safety valve (80).
26. The method (100) according to the preceding claim, wherein The method (100) further comprises the following steps: d) actuating (140) the movable tube (83) of the pipeline retractable underground safety valve (80) to retain the rupture stop (5) within the recess (84), wherein this step is performed after moving the tool (1; 2) against the rupture stop (5).
27. The method (100) according to the preceding claim, wherein The method (100) further comprises the following final step: e) Permanently securing (150) the movable tube (83) in a downward position to retain the break barrier (5) within the pocket (84).