Through-tapered nose tool

Abstract

A conical nose tool having a closed position and an open position, a degradable nose member, a releasable nose member, configured to rotate due to fluid flow therethrough, and configured for a portion of the retrievable bull nose tool.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of U.S. Application Serial No. 63 / 054,097, filed July 20, 2020, U.S. Application Serial No. 63 / 122,079, filed December 7, 2020, and U.S. Application Serial No. 17 / 379,474, filed July 19, 2021, the entire disclosure of which is incorporated herein by reference. Background Technology

[0003] In the resource recovery industry, it is often necessary to join two columns together to complete a wellbore system. Conical nose tools, such as “bullnose” tools (generally considered closed-end conical tools) and guide shoes (generally considered open-end conical nose tools), are used industrially to improve alignment and concentricity when joining two columns. Such bullnose tools are extremely effective and widely used. A drawback of bullnose tools is that, because their profile closes the wellbore, tubing and well intervention methods are no longer possible through the bullnose. However, as wells have become increasingly complex and sensitive, guide shoes have become increasingly critical for protecting the up-facing profile of the downhole tool string. Simple solutions (such as semi-guide shoes) are not suitable in some cases because they may damage and prevent the upper tool string from rotating. The proposed devices are several configurations that eliminate or mitigate some of the risks associated with standard guide shoes and allow the capabilities of bullnose tools while enabling future tasks to be performed downhole with the guide shoe. Summary of the Invention

[0004] A conical nose-shaped tool having a closed position and an open position.

[0005] A conical nose-shaped tool having a biodegradable nose-shaped component.

[0006] A conical nose-shaped tool having a releasable nose-shaped component.

[0007] A conical nose-shaped tool configured to rotate as fluid passes through it.

[0008] A conical nose-shaped tool configured to retrieve a portion of a cow nose-shaped tool. Attached Figure Description

[0009] The following description should not be considered as limiting in any way. Referring to the accompanying drawings, the same elements are indicated by the same reference numerals:

[0010] Figure 1 This is a perspective view of the implementation scheme with the conical nose tool in operation;

[0011] Figure 2 yes Figure 1 The tool shown is in a through-hole view;

[0012] Figure 3 yes Figure 1 The tool shown is in a running state (end view).

[0013] Figure 4 yes Figure 1 The tool shown is in the open (through) end view;

[0014] Figure 5 and Figure 6 It shows Figure 1 A sectional view of the tool;

[0015] Figure 7 It shows a similar position to the one in operation. Figure 1 Alternative implementation schemes for the tools;

[0016] Figure 8 It is in the open position. Figure 7 Tools;

[0017] Figure 9 yes Figure 7 The tool shown is in a running state in the end view;

[0018] Figure 10 yes Figure 7 The tool shown is in the through (open) state at the end;

[0019] Figure 11 and Figure 12 It shows Figure 7 A sectional view of the tool;

[0020] Figures 13 to 14 It shows Figures 1 to 12 An enlarged view of a portion of the tool shown;

[0021] Figures 15A to 15G It shows the use of Figure 1 Various biasing components of the tool;

[0022] Figures 16 to 17 It shows Figure 1 Operating the tools in the middle.

[0023] Figure 18 This is a cross-sectional view of another embodiment of the conical nose tool in operation;

[0024] Figure 19 yes Figure 18 A cross-sectional view of the tool shown in the partially retrieved position;

[0025] Figure 20 yes Figure 18 A cross-sectional view of the tool shown in the larger part retrieval position;

[0026] Figure 21 It shows Figure 18 Implementation plan when the device is in the fully retrieved position;

[0027] Figure 22 yes Figure 21 An alternative implementation, but with the addition of through-holes;

[0028] Figure 22A This is another alternative implementation scheme;

[0029] Figure 23 yes Figure 18 The perspective view of the tool in operation;

[0030] Figure 24 It is in the partial retrieval position. Figure 18 Tools;

[0031] Figure 25 This is a perspective view of another alternative embodiment, in which the nose is biodegradable, showing a pore pattern that increases the degradation rate;

[0032] Figure 26 yes Figure 25 A sectional view;

[0033] Figure 27 and 28 It is an alternative geometry for other biodegradable implementation schemes;

[0034] Figure 29 This is a cross-sectional view of another alternative implementation of the conical nose tool;

[0035] Figure 30 yes Figure 29 A cross-sectional view of the implementation scheme, in which the nasal component is partially popped out;

[0036] Figure 31 It shows Figure 29 The implementation scheme in which the nasal component is completely ejected;

[0037] Figures 32 to 34 It shows the relationship with Figures 29 to 31 Similar concepts;

[0038] Figure 35 This is a cross-sectional view of another embodiment of a conical nose tool employing fluid-driven rotation;

[0039] Figure 36 yes Figure 35 A perspective view of the implementation plan;

[0040] Figure 37 It shows the relationship with Figure 36 The rotation of the conical nose-shaped component compared to its initial position;

[0041] Figure 38 This is a cross-sectional view of another embodiment of the conical nose tool;

[0042] Figure 39 yes Figure 38 A perspective view of the implementation plan;

[0043] Figure 40 It shows the relationship with Figure 39 The rotation of the conical nose-shaped component compared to its initial position;

[0044] Figure 41 This is a schematic diagram of a wellbore system including a conical nose tool as disclosed herein;

[0045] Figure 42 This is another alternative implementation scheme;

[0046] Figure 43 yes Figure 42 A magnified view of the portion;

[0047] Figure 44 yes Figures 35 to 37 The relevant implementation plan of the implementation plan, and

[0048] Figure 45 yes Figure 44 A cross-sectional view of the implementation scheme. Detailed Implementation

[0049] Detailed descriptions of one or more embodiments of the devices and methods disclosed herein are presented by way of example rather than limitation, with reference to the accompanying drawings.

[0050] This document discloses several embodiments of a conical nose tool. In each embodiment, the tool not only provides the functionality of a conventional bullnose tool or guide shoe to help guide the column through sensitive downhole profiles, but also provides the ability to allow passage of through-hole tools. This is highly beneficial in the art because it reduces risk and enables subsequent actions to be taken during bottom-end completion of the well.

[0051] Reference Figures 1 to 4 A first embodiment of a conical nose tool is shown. As those skilled in the art will recognize, in the operating position, the conical nose tool 10 functions similarly to a conventional bullnose tool, allowing for much easier probing of the profile and suspension point than a post without a bullnose tool. The difference between the conical nose tool 10 disclosed herein and the conical nose tool 10 is that it can also be configured to Figure 2 The open position shown is to eliminate any obstruction to the operation of the through pipe.

[0052] The conical nose tool 10 includes a housing 12 with a tubular shape, which in some cases will be cylindrical as shown. Multiple doors 14 are pivotally attached to the housing 12. For example, as... Figure 1 , Figure 3 or Figure 5 As shown, each of the plurality of doors is shaped and arranged such that when the plurality of doors 14 are joined together, they form a conical shape. A three-door configuration is shown in the figure, but other numbers of doors, such as 2, 4, 5, etc., are also conceivable. The doors in this embodiment include a closed nose configuration 16, wherein each door 14 includes a portion of the nose configuration 16, which are joined together to form a fully closed nose. Figure 2 As shown, in some embodiments, a retaining member 18 is disposed in the region of the closed nose configuration 16 to help keep the door 14 closed. In embodiments, the retaining member may be magnetic and may be a permanent magnet. These are optional but may be useful in certain situations. Additionally, (or only) a biasing member 20 keeps the door 14 closed. These are in Figure 2 It is visible and can be seen in Figure 5 , Figure 6 and Figures 11 to 15 This can be seen in more detail. Other specific configurations for biasing the door 14 to the closed position can also be considered, such as a torsion spring 15 positioned around the pivot point 21 between the door and the body. Figure 15A (closed) and Figure 15B (Visible in (open)); In Figure 15C (closed) and Figure 15D (When opened) visible are tension spring 17, piston arrangement for biasing the door, and compression spring between the door face and body, etc. Figure 15A , 15B Another optional feature that should be understood in 15E is the bottom surface 23 of door 14 and the stop surface 25 of door 14. The angle and dimensions of the bottom surface match the tubular end face 29 on which door 14 is mounted, such that even when no other door 14 is present, each door 14, when pushed to the closed position, will not rotate about its pivot beyond the range it should rotate. Instead, surface 29 and bottom surface 23 will contact each other at this degree of pivoting. Furthermore, each stop 25 is constructed and positioned to interact with adjacent stops 25 to prevent doors 14 from opening further than they should. When the maximum designed opening is reached, adjacent surfaces 25 will contact each other. Another configuration for biasing door 14 is... Figure 15FAs shown, alternating tension springs 17a are mounted to extend through a larger longitudinal portion of the door 14. One end of the spring 17a is mounted to the door 14 at connection 31, and the other end is mounted to the housing 12 at connection 33. It should be understood that the spring 17a is located radially inward of the pivot 21, and therefore tends to move the door 14 to the closed position. Due to the proximity of the pivot 21 to the spring 17a, one embodiment will include a support 29 to prevent the spring 17a from moving beyond the center of the pivot 21 and to open rather than close the door 14. In yet another configuration for biasing the door 14 to the closed position, see [reference]. Figure 15G One or more conical springs 35 (also referred to as spring washers) are disposed between the door 14 and the housing 12. This configuration includes a link 37 pivotally connected to the door 14 at pivot 39 and pivotally connected to a ring 41 at pivot 43. Link 37 converts the opening motion of the door 14 into axial displacement of the pivot 43, which in turn causes the ring 41 to compress the conical springs 35. The elasticity of the conical springs 35 tends to close the door 14.

[0053] Figure 5 , Figure 6 and Figures 11 to 15 Two embodiments are shown, in which the biasing member 20 is either a flat plate 24 spring member or a bent plate 26 spring member (leaf spring). The spring member 24 or 26 is positioned close to the rest position (but still deflected to generate force) when the door 14 is closed, and away from the rest position (i.e., more deflected) when the door is open. This can be seen in the figures. Due to the greater deflection of the spring member 24 or 26 when the door is open, the tool 10 is always biased toward the closed position. During use, the tool can be opened via an input (such as reaching the narrower portion of the tubular member discussed below) and will automatically close upon removal of the input. Therefore, this also means that the tool can cycle between positions multiple times during a single run or within a single operation, as required by the operator's interests.

[0054] Reference Figure 3 It is evident that each door 14 includes an opening member 22, on which a load is applied if the opening member 22 comes into contact with a portion of the housing or conduit in which the tool 10 operates. The load on member 22 is an example of the input described above. The load on member 22 causes the doors 14 to rotate together with the housing 12 about their respective pivot points 21. Sufficient input causes the doors 14 to open to place the tool 10 in its open position.

[0055] Reference Figures 15 to 17 This shows the order of execution and opening. It should be understood that... Figure 15In this configuration, tool 10 easily slides (remains closed) through the contour 30 region of housing 32, a region that would otherwise suspend a blunt post, but at the downhole end of contour 30, where the housing includes a neck 36, door 14 will begin to open. This can be achieved by... Figure 15 and 16 As seen in the figure, in order of consideration of contact area 34, contact area 34 contacts the opening member 22 of door 14. When tool 10 is held in a portion of housing 32, which has a smaller diameter as described above, door 14 is opened and will remain open. When tool 10 moves to a position within housing 32, the inner diameter of this position is larger than the aforementioned necking region, and tool 10 will automatically close door 14 under the biasing action of biasing member 20, as shown in the figure. Biasing member 20 can be spring members 24 and 26.

[0056] In a very similar implementation, refer to Figures 7 to 12 Instead of a closed nose-shaped configuration 16, a flow port 40 is formed at the end of the gate 14. This embodiment allows fluid to flow through the tool 10 during operation, if desired, and reduces obstruction to the tool traveling in the uphole direction. Other aspects are explained with reference to the foregoing. Figures 7 to 12 The tools shown are subject to minor modifications that will be clear to those skilled in the art.

[0057] In another embodiment of the conical nose tool as disclosed herein and referring to Figures 18 to 24 A retrievable conical nose-shaped tool 50 is shown. Tool 50 is shown within a tubular or sealed orifice 52. Tool 50 includes a housing 54 surrounding a conical body or nose 56 and a movable sleeve 58 disposed within the conical body 56. Figure 18 In the diagram, tool 50 is shown in the operating position, with the conical body 56 secured to housing 54 by a retainer 60, such as a chuck or C-ring, which radially passes through a retaining opening 55 in the nose 56. A movable sleeve 58 holds the retainer 60 in place. In this position, tool 50 functions like any conventional shoe guide tool. However, when it is desired to eliminate the obstruction caused by the conical nose tool to the tube-clearing operation, a portion of tool 50 can be retrieved by moving the movable sleeve 58 to position the recess 62 radially inward of the retainer 60, allowing the retainer 60 to move out of the locking groove 64 in housing 54. This position is... Figure 19 As shown in the diagram. With the retainer 60 disengaged from the locking groove 64, the body 56, the switching sleeve 58, and the retainer 60 can be removed from the housing 54. Figure 20The process of the movement is illustrated in the diagram. Ultimately, the entire body 56, moving sleeve 58, and fixing member 60 are removed from the housing 54, leaving the housing 54 in place within the sealing hole 52 and open at its inner diameter for pipe passage operations. This process is described in... Figure 21 As shown in the image. Figure 22 This is an alternative embodiment showing a central hole 61 in the conical body 57, which allows at least fluid and, in some cases, allows other tools to pass through the conical nose. In a similar embodiment, see... Figure 22A The switching sleeve 58 is configured with a torque lug 59, which facilitates drilling operations in the event of failure to retrieve the tapered body 57. Figure 22A An additional feature of the implementation scheme is that it uses a threaded connection 65 instead of a retaining ring, which may potentially hinder operation in some cases. Figure 23 and 24 Tool 50 is provided in the running location ( Figure 23 ) and partial retrieval location ( Figure 24 A perspective view of the location relative to... Figure 20 The positions shown are consistent. The tool 50 in this embodiment includes a flow opening 63 to allow fluid to flow through the tool 50 before the conical nose is retrieved. It should be understood that, although... Figures 18 to 24 A variation of this embodiment is shown, in which the body 56 is closed axially at the center; however, in another variation, a central axial opening exists in the body to allow fluid to flow through when needed, similar to... Figure 22 Hole 61 in the middle.

[0058] In another embodiment of the conical nose tool, and referring to Figures 25 to 28 The conical nose component 80 of the conical nose tool 82 is envisioned to be degradable (i.e., soluble, disintegratable, etc.). This essentially means that the component disappears within a specified time frame. The illustrated configurations each have an outer surface usable under certain conditions, and several different opening patterns are also shown. The opening patterns can be used to control the degradation rate of a particular degradable material by controlling the surface area exposed to downhole fluids or the surface area to which fluids are applied. In each case, since the conical component 80 will substantially or completely disappear in some embodiments, the remaining diameter available for further operation can be controlled by specifying the diameter of the mounting portion 84. The conical component 80 can be held in place on the mounting portion 84 using pressure fittings, fasteners, adhesives, threaded connections, etc., as needed.

[0059] Reference Figures 29 to 31This illustrates yet another embodiment of a conical nose tool. This embodiment of the conical nose tool 98 considers removing the conical tip 100 from the housing 102 by pressure. The conical tip 100 is attached to the housing 102 by a retaining member 104, such as a shear screw or the like. When this embodiment is operated in a borehole, the function of a bullnose tool is realized. When this function is no longer needed, a through-hole operation can be initiated after pressurizing the column attached to the tool 98. At a selected threshold pressure, the retaining member 104 will release and the tip 100 will be released from the housing 102. Figure 30 Partial discharge is shown in the image, and... Figure 31 The diagram shows complete removal with only the housing 102 remaining. In a variation of this embodiment, the tip 100 may be biodegradable or brittle, such that when released from the housing 102, the tip 100 or its components will not obstruct other wellbore operations.

[0060] In similar but different implementation schemes, refer to Figures 32 to 34 Different tapered tips 110 are mounted onto the housing 102. This mounting is... Figures 29 to 31 The same applies, but it should be noted that the tapered tip 110 is not a closed end, but rather provides a port 112 and a seat 114 for the object 116, which may be present during operation or flow to the seat as needed after operation. In either case, as Figures 29 to 31 In the illustrated embodiments, pressurization causes the retaining member 104 to release and the tapered tip 110 to pop out, as... Figure 33 As shown. Similar to Figure 31 of Figure 34 The housing 102 is shown after the conical tip 110 has popped out and is ready for a flushing operation. Furthermore, as in the above embodiment, the conical tip 110 is intended to be brittle or biodegradable, such that its components or fragments will not interfere with other wellbore operations upon popping out.

[0061] In yet another implementation plan, refer to Figures 35 to 37The conical nose tool 120 includes a housing 122 and a rotating shoe component 124. The shoe component 124 is mounted to the housing 122 via a bearing 126, allowing the shoe component 124 to rotate easily relative to the housing 122. At the inner diameter surface of the shoe component 124 are one or more helical grooves 128 that interact with fluid flowing through the shoe component 124. The fluid flow interacting with the helical grooves causes the shoe component 124 to rotate. It should also be understood that the front end 130 of the shoe component 124 is asymmetrically cut. This is important for the operation of the implementation. In this case, although it does not have the long conical guide portion of a conventional bullnose tool, the function of a guide nose is achieved by simultaneously utilizing the asymmetrical profile and rotation of the shoe component 124. Due to the combination of the asymmetry and rotation of the end of the shoe component 124, it will tend to climb any profile or suspension point. By doing so, the tool will work only by allowing fluid to flow through these points. In this case, there is no limitation on the ID of the post to which the conical nose tool 120 is connected. More precisely, the ID is fully open, so that subsequent pipe-through operations will not be hindered.

[0062] Now refer to Figures 38 to 40 Another embodiment of the conical nose-shaped tool 140 is shown, which has a shoe component 142 rotatably connected to the housing 144. This tool... Figures 35 to 37 The tool is similar to the one in the previous embodiment because it rotates due to fluid flow and climbs over obstacles in the wellbore fittings due to its asymmetrical front end, but the difference lies in that the power for rotation is a series of ports 146 and blocks 148 for fluid flow, rather than the spiral grooves of the previous embodiment. The ports 146 are arranged differently from orthogonally through the wall 150 of the shoe component 142, and all pass through the wall 150 at the same angle, such that the fluid flowing through the ports 146 will collectively generate rotation within the shoe component 142. The tool 140 is adapted to the entire pipeline operation by dissolving the blocks 148 (which may be a biodegradable material) or removing the blocks by crushing, etc.

[0063] Reference Figure 41 The diagram illustrates a wellbore system 160. This system includes a borehole wall 162 disposed in an underground formation 164. Within the borehole 162 are a first tubular structure 166 and a second tubular structure 168. The second tubular structure 168 is shown extending into the first tubular structure 166 and employing any of the embodiments described above with a conical nose tool. For illustrative purposes, a conical nose tool 10 is specifically shown.

[0064] Reference Figure 42 and 43Another biodegradable embodiment of a tapered nose tool 200 with a tapered nose component 202 is shown. The nose component 202 is characterized by a front cone 204 and a rear cone 206, allowing the tool 200 to easily pass through confinement in a borehole or tubing as in the aforementioned embodiments, and also allowing the through-pipe running tool to easily exit the component 202 and reducing flow corrosion of the component 202 due to the rear cone 206. The component 202 is fully biodegradable and will therefore disappear within a specified timeframe. Once the component 202 disappears, the mandrel 208 is exposed. It should be understood that the mandrel 208 includes a chamfered section 210, which is constructed, positioned, and oriented to facilitate the reverse circulation of the tool through the mandrel 208. Figure 43 Enlarged Figure 42 Part of the diagram, to more clearly show the adhesive layer 212 used to secure component 202 to mandrel 208. In embodiments using adhesives, fixation methods such as pressure fits or shrinkage fits are avoided, which are also desirable but more expensive manufacturing options. Finally, Figure 43 A coating 214 that is continuous around the entire conical nose tool 200 is also shown. This coating allows for better control over when the tool 200 begins to degrade.

[0065] Reference Figure 44 and Figure 45 It was made public similar to Figures 35 to 37 Another implementation scheme of the implementation scheme. Figures 35 to 37 The description also applies to this implementation scheme, but Figure 44 and Figure 45 The embodiment also includes one or more outer surface helical grooves 129. For various configurations, groove 129 may supplement or replace groove 128. The outer surface grooves 129 may further aid in inducing rotation of the rotating shoe 125. In other respects, Figure 44 and Figure 45 Implementation plan and Figures 35 to 37 The implementation plan is the same.

[0066] The following are some of the aforementioned publicly disclosed implementation schemes:

[0067] Implementation Scheme 1: A through-hole conical nose tool includes a housing and a plurality of doors hinged to the housing, the doors having a closed position and an open position, wherein in the closed position the doors collectively form a conical geometry, and in the open position the doors allow other drilling tools to pass through.

[0068] Implementation Scheme 2: The tool according to any of the foregoing implementation schemes, wherein the door is shaped such that the flow port remains open when in the closed position.

[0069] Implementation Scheme 3: The tool according to any of the foregoing implementation schemes, wherein the door is shaped such that when in the closed position, it forms a fully closed nose.

[0070] Implementation Scheme 4: The tool according to any of the foregoing implementation schemes, wherein the door includes a magnet oriented to attract the door to a closed position.

[0071] Implementation Scheme 5: The tool according to any of the foregoing implementation schemes further includes a biasing configuration to push the door to the closed position.

[0072] Implementation Scheme 6: The tool according to any of the foregoing implementation schemes, wherein the biasing configuration is a torsion spring.

[0073] Implementation Scheme 7: The tool according to any of the foregoing implementation schemes, wherein the biasing configuration is a leaf spring.

[0074] Implementation Scheme 8: The tool according to any of the foregoing implementation schemes, wherein the biasing configuration is a tension spring.

[0075] Implementation Scheme 9: The tool according to any of the foregoing implementation schemes, wherein the biasing configuration is a conical spring.

[0076] Implementation Scheme 10: The tool according to any of the foregoing implementation schemes further includes a retaining member disposed at the intersection between adjacent doors.

[0077] Implementation Scheme 11: The tool according to any of the foregoing implementation schemes, wherein the retaining member is magnetic.

[0078] Implementation Scheme 12: The tool according to any of the foregoing implementation schemes, wherein the retaining member is a permanent magnet.

[0079] Implementation Scheme 13: The tool according to any of the foregoing implementation schemes further includes an opening member on one or more of the plurality of doors.

[0080] Implementation Scheme 14: A method for operating in a wellbore, the method comprising running a tool according to any of the foregoing embodiments into the wellbore, probing the downhole profile with the tool, and opening the tool's door.

[0081] Implementation Scheme 15: The method according to any of the foregoing implementation schemes further includes causing another tool to operate through an open door.

[0082] Implementation Scheme 16: The method according to any of the foregoing implementation schemes further includes allowing fluid to flow through a flow port defined by the gate.

[0083] Implementation Scheme 17: The method according to any of the foregoing implementation schemes further includes engaging the opening member on a limiting portion in the well shaft to open the plurality of doors.

[0084] Implementation Scheme 18: The method according to any of the foregoing implementation schemes further includes automatically closing the plurality of doors when the movement exceeds the limit in the wellbore.

[0085] Implementation Scheme 19: A well system comprising a borehole in an underground formation, a first tubular structure in the borehole, and tools disposed within or as part of the first tubular structure according to any of the foregoing embodiments.

[0086] In the context of describing the invention (particularly in the context of the appended claims), the terms “an,” “a,” and “the,” and similar designations, should be interpreted to cover both the singular and plural, unless otherwise specified herein or clearly contradicted by the context. Furthermore, it should be noted that the terms “first,” “second,” etc., used herein do not indicate any order, quantity, or importance, but are used to distinguish one element from another. The terms “about,” “substantially,” and “generally” are intended to include, based on the equipment available at the time of filing, the degree of error associated with a particular number of measurements. For example, “about” and / or “substantially” and / or “generally” may include a range of ±8%, 5%, or 2% of a given value.

[0087] The teachings of this disclosure can be applied to a variety of well operations. These operations may involve treating a formation, fluids residing in the formation, the wellbore, and / or equipment within the wellbore, such as production tubing, with one or more treatment agents. Treatment agents can be in the form of liquids, gases, solids, semi-solids, and mixtures thereof. Exemplary treatment agents include, but are not limited to, fracturing fluids, acids, steam, water, brine, corrosion inhibitors, binders, permeability modifiers, drilling mud, emulsifiers, demulsifiers, tracers, flow improvers, etc. Exemplary well operations include, but are not limited to, hydraulic fracturing, production enhancement, tracer injection, cleaning, acidizing, steam injection, water injection, cementing, etc.

[0088] Although the invention has been described with reference to one or more exemplary embodiments, those skilled in the art will understand that various changes can be made and equivalents can be substituted for elements therein without departing from the scope of the invention. Furthermore, many modifications can be made to adapt particular situations or materials to the teachings of the invention without departing from the basic scope of the invention. Therefore, it is contemplated that the invention is not limited to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but rather that the invention will include all embodiments falling within the scope of the claims. Additionally, exemplary embodiments of the invention have been disclosed in the drawings and detailed descriptions, and although specific terminology has been used, it is used in a general and descriptive sense only, and not for limiting purposes, unless otherwise specified, and therefore the scope of the invention is not limited thereto.

Claims

1. A through-conical nose-shaped tool (10) for a wellbore (160), characterized in that, The through-conical nose-shaped tool includes: Shell (54, 102, 122, 144); Multiple doors (14) are hinged to the housing (54, 102, 122, 144). Each door (14) has a closed position and an open position. In the closed position, the doors collectively form a conical geometry. In the open position, the doors allow other drilling tools to pass through. An opening member (22) on one or more of the plurality of doors (14), wherein the opening member is configured to engage with a restraint in the shaft (160) when the plurality of doors are in the open position.

2. The through-conical nose tool (10) according to claim 1, wherein the door (14) is shaped such that the flow port (40) remains open when in the closed position.

3. The through-conical nose tool (10) according to claim 1, wherein the door (14) is shaped such that when in the closed position, it forms a fully closed nose (16).

4. The through-cone nose tool (10) according to claim 1, wherein the door (14) includes a magnet oriented to attract the door (14) to a closed position.

5. The through-conical nose tool (10) according to claim 1, the through-conical nose tool further includes a biasing structure for pushing the door (14) to a closed position.

6. The through-conical nose tool (10) according to claim 5, wherein the biasing configuration is a torsion spring (15).

7. The through-conical nose tool (10) according to claim 5, wherein the biasing configuration is a conical spring (35).

8. The through-conical nose tool (10) according to claim 1, wherein the through-conical nose tool further comprises a retaining member (18) disposed at the intersection between adjacent gates (14).

9. A method for operation in a wellbore (160), characterized in that: The through-cone nose tool (10) according to claim 1 is driven into the wellbore (160); The downhole profile was probed using the aforementioned through-cone nose tool (10); and The door (14) of the through conical nose tool (10) is opened using the opening member (22).

10. The method of claim 9, further comprising causing another tool (82, 98, 120, 140, 202) to run through the open door (14).

11. The method of claim 9, further comprising allowing fluid to flow through a flow port (40) defined by the gate (14).

12. The method according to claim 9, the method further comprising engaging the opening member (22) on a limiting portion in the wellbore (160) to open the plurality of doors (14).

13. The method of claim 12, further comprising automatically closing the plurality of doors (14) when the movement exceeds the limiting portion in the wellbore (160).

14. A wellbore system (160), characterized in that: A borehole (162) is located in an underground stratum (164); A first tubular structure (166) is located within the borehole (162); and The through-conical nose tool (10) according to claim 1 is disposed within or as part of the first tubular structure (166).

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