MAGNETIC COUPLING BOTTOM SAFETY VALVE

Abstract

The invention relates to a recoverable safety valve insert. In one aspect, the recoverable safety valve insert comprises an external housing having a central bore, and a valve closing mechanism coupled to the external housing near one end of the hole bottom of the central bore.According to this aspect, the recoverable safety valve insert further comprises a bore flow management actuator disposed in the central bore, the bore flow management actuator being configured to slide in order to move the valve closing mechanism between a closed state and an open state, and one or more safety valve insert magnets coupled to the bore flow management actuator, the one or more safety valve insert magnets being configured to magnetically couple with one or more inside-reach fitting magnets of a safety valve inside-reach fitting to slide the bore flow management actuator and move the valve closing mechanism between the closed state and the open state.

Description

Title of the invention: MAGNETIC COUPLING BOTTOM SAFETY VALVE CROSS-REFERENCE TO AN ASSOCIATED REQUEST

[0001] The present application claims priority over U.S. application no. 17 / 836,237, filed on June 9, 2022, entitled "MAGNETICLY COUPLED SUBSURFACE SAFETY VALVE", commonly attributed to this application. CONTEXT

[0002] Downhole safety valves (DSVs) are well known in the oil and gas industry and provide one of many built-in safety mechanisms to prevent the uncontrolled release of downhole production fluids should a wellbore system experience a containment failure. Generally, DSVs comprise a portion of a production stack, with the entire DSV being installed during wellbore completion. Although several design variations are possible for DSVs, the vast majority are poppet valves that open and close in response to the longitudinal movement of a flow tube.

[0003] Since SSSVs provide a built-in safety mechanism, the default position of the check valve is generally closed to minimize the risk of accidental release of bottom production fluids. The check valve can be opened by various control means from the ground surface to provide a flow path for production. What is needed in the technique is an improved SSSV that does not exhibit the problems of existing SSSVs. BRIEF DESCRIPTION

[0004] Reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:

[0005] Fig. 1 illustrates a well system designed, manufactured and / or operated according to one or more embodiments of the invention;

[0006] [Fig.2] illustrates an embodiment of an internally oriented safety valve fitting, such as could be part of an SSSV (for example, the SSSV of [Fig.1]), designed and manufactured according to the present invention;

[0007] [Fig.3] illustrates an embodiment of a recoverable safety valve insert, such as could be part of an SSSV (for example, the SSSV of [Fig.1]), designed and manufactured according to the present invention;

[0008] Figs. 4A, 4B, 4C, 4D, 4E, 4F, 4G, 4H and 4I illustrate an embodiment for assembling (e.g., filling at the bottom of the hole) and operating an SSSV according to one or more embodiments of the invention, comprising the insertion and locking of a recoverable safety valve insert in a safety valve internal seat fitting;

[0009] [Fig.5] illustrates an embodiment of an internally oriented safety valve fitting, such as could be part of an SSSV (for example, the SSSV of [Fig.1]), designed and manufactured according to another embodiment of the present invention;

[0010] Figure 6 illustrates an embodiment of a recoverable safety valve insert, such as could be part of a SSSV (for example, the SSSV of Figure 1), designed and manufactured according to another embodiment of the present invention; and

[0011] Figs. 7A, 7B, 7C, 7D, 7E, 7F, 7G, 7H, 7I, 7J and 7K illustrate an embodiment for assembling (e.g., filling to the bottom of the hole) and operating an SSSV according to one or more other embodiments of the invention, comprising the insertion and locking of a recoverable safety valve insert in a safety valve internal reach fitting. DETAILED DESCRIPTION

[0012] In the following drawings and descriptions, identical parts are generally associated throughout the description and all drawings with the same numerical reference numerals, respectively. The figures drawn may be to scale, but are not necessarily so. Certain features of the invention may be shown enlarged to scale or in a somewhat simplified form, and it is possible that certain details of some elements may not be shown for the sake of clarity and conciseness. The present invention can be implemented in embodiments of various forms. Specific embodiments are described in detail and are shown in the drawings, it being understood that the present invention is to be considered an example of the principles of the invention and is not intended to limit the invention to that illustrated and described herein.It must be fully recognized that the various teachings of the embodiments described herein can be used separately or in any appropriate combination to produce the desired results. Furthermore, all statements in the present invention indicating principles and aspects of the invention, as well as specific examples thereof, are intended to encompass equivalents thereof.

[0013] Unless otherwise indicated, the use of the terms "connect", "engage", "couple", "attach", or any other similar term describing an interaction between elements, is not intended to limit the interaction to a direct interaction between the elements and may also include an indirect interaction between the elements described.

[0014] Unless otherwise specified, the use of the terms "top," "upper," "upward," "top of hole," "upstream," or similar terms, shall be interpreted as generally referring to an area away from the bottom end of a well, regardless of the wellbore's orientation; similarly, the use of the terms "bottom," "lower," "downward," "bottom of hole," or similar terms, shall be interpreted as generally referring to an area extending toward the bottom end of a well, regardless of the wellbore's orientation. The use of any one or more of the preceding terms shall not be interpreted as referring to positions along a perfectly vertical or horizontal axis.Unless otherwise indicated, the use of the term "subterranean formation" should be interpreted as encompassing both areas below the exposed Earth's surface and areas below the Earth's surface covered by water, such as oceans or freshwater bodies.

[0015] The present invention recognizes that offshore wells are drilled at ever-increasing water depths and in ecologically sensitive bodies of water, thus necessitating the use of safety valves (including, for example, downhole safety valves (DSVs)). The present invention further recognizes that DSSs have inherent problems. For example, the present invention recognizes that the operational lifespan of traditional DSSs is less than optimal, that they cease to function completely, or that they begin to leak. In such situations where DSSs cease to function completely or begin to leak, the production string to which the DSSs are coupled must be removed from the borehole, coupled to a new, functional DSS, and then returned to the wellbore, which is a costly and time-consuming process.

[0016] Based, at least in part, on the preceding observations and findings, the present invention has developed a replaceable SSSV (for example, a replaceable SSSV independent of the production column). This replaceable SSSV, in at least one embodiment, can be inserted into the hole in two or more steps. For example, a safety valve internal seat fitting of the replaceable SSSV can first be inserted into the hole with the production column, then a recoverable safety valve insert can be inserted into the hole (for example, in one or two steps), and finally engaged with the safety valve internal seat fitting to complete the replaceable SSSV. Therefore, If the replaceable SSSV were to fail or begin to leak, the original recoverable safety valve insert could easily be removed and replaced with a replacement recoverable safety valve insert. The process of exchanging the original recoverable safety valve insert for the replacement is significantly less expensive and time-consuming (for example, it can eliminate the need for a reconditioning unit) than what is currently required when removing the production column, as explained above.

[0017] The SSSV according to the invention may include hydraulic and / or electrical actuation. For example, in at least one embodiment, the hydraulic and / or electrical actuation moves a first magnet to compress a power spring in an insulated chamber of the safety valve's internally seated fitting. Since the first magnet is magnetically coupled to a second magnet associated with a bore flow management actuator (for example, a flow tube) of the recoverable safety valve insert, the hydraulic and / or electrical actuation can be used to slide the bore flow management actuator to engage or disengage from a valve closing mechanism (for example, a poppet valve in one embodiment) to determine a bottom-production fluid flow condition through the SSSV.

[0018] The SSSVs according to the invention may also exhibit enhanced built-in safety capability compared to other safety valves. Built-in safety can be defined as a condition in which the SSSV or an associated control system may be damaged, and the SSSV retains the ability to close. In some examples, the SSSV may fail in the closed position (e.g., in the closed state), thus ensuring the containment of wellbore fluids and pressure. In another example, the SSSV may fail in the open position (e.g., in the flow state) but closes automatically (e.g., using the power spring) when a hydraulic and / or electrical connection to the surface is damaged or interrupted without any additional external input.

[0019] Figure 1 illustrates a well system 100 designed, manufactured, and / or operated according to one or more embodiments of the invention. The well system 100, in at least one embodiment, comprises an offshore platform 110 connected to a substation 170 via a control line 120 (for example, a hydraulic control line, an electrical control line, etc.). An annular space 150 may be defined between the walls of a borehole 130 and a conduit 140. A wellhead 160 may provide a means of transferring and sealing the conduit 140 against the borehole 130 and provide a profile for locking a sub-blowout preventer. marine. The 140 conduit can be coupled to the 160 wellhead. The 140 conduit can be any conduit such as casing, jacket, production column or any other oilfield tubular element arranged in a wellbore.

[0020] The SSSV 170, or at least a portion thereof, can be interconnected in the conduit 140 and positioned in the wellbore 130. Although the wellbore system 100 is described in [Fig. 1] as an offshore wellbore system, those skilled in the art should be able to apply the teachings herein to any type of wellbore, including onshore or offshore. The control line 120 can extend into the wellbore 130 and can be connected to the SSSV 170. The control line 120 can provide actuation power to the SSSV 170. As will be described in more detail below, power can be supplied to the SSSV 170 to actuation or deactivation.Actuation may include opening the SSSV 170 to provide a flow path allowing bottom-stage production fluids to enter the conduit 140, and deactivation may include closing the SSSV 170 to close a flow path allowing bottom-stage production fluids to enter the conduit 140. While the embodiment of [Fig. 1] illustrates only a single SSSV 170, other embodiments exist in which multiple SSSV 170s according to the invention are used. Furthermore, although not shown in the embodiment of [Fig. 1], a tube-recoverable surface valve (TRSV) may be positioned at the bottom of the hole in the SSSV 170.

[0021] Let us now turn to [Fig. 2], which illustrates an embodiment of an internally seated safety valve fitting 200, such as could be part of a SSSV (for example, the SSSV 170 of [Fig. 1]), designed and manufactured according to the present invention. The internally seated safety valve fitting 200, in at least one embodiment, can be an integral part of a tube-recoverable SSSV, or in another embodiment, the internally seated safety valve fitting can be an independent device in the production column. The internally seated safety valve fitting 200, in at least one embodiment, comprises a housing 210. The housing 210, in the illustrated embodiment, comprises a passage 220 extending from a first end 225 (for example, a top end of the hole) to a second end 230 (for example, a bottom end of the hole) of said housing.Although not shown in the embodiment of [Fig.2], the first and second ends 225, 230 may include coupling elements (e.g., threaded coupling elements), so that the safety valve internal reach fitting 200 can be coupled between adjacent oilfield tubing (e.g., threaded tubing, production tubing, etc.).

[0022] In at least one embodiment, the safety valve internally mounted fitting 200 further comprises a locking profile 235 located in the passage 220. The locking profile 235, in at least one embodiment, is a locking profile specially designed and configured to engage with a lock of a retrievable safety valve insert (for example, the retrievable safety valve insert 300 of [Fig. 3]). In the illustrated embodiment, the locking profile 235 is located near the first end 225 (i.e., closer to the first end 225 than to the second end 230). In at least one other embodiment, the safety valve internally mounted fitting 200 further comprises a polished bore receptacle 238.The polished bore receptacle 238, in at least one embodiment, is specially configured to engage with a seal of a recoverable safety valve insert (for example, the recoverable safety valve insert 300 of [Fig. 3]). In the illustrated embodiment, the polished bore receptacle 238 is located near the second end 230 (i.e., closer to the second end 230 than to the first end 225).

[0023] The internally receptacled safety valve 200 of [Fig. 2], in at least one embodiment, further comprises an insulated chamber 240. The insulated chamber 240, in the illustrated embodiment, is located in a side wall of the housing 210 and is isolated from the annular space and the downhole production fluids. In the embodiment illustrated in [Fig. 2], an actuator 250 is positioned inside the insulated chamber 240 and can be coupled to a control line (not shown) via one or more ports 255 in the housing 210. The actuator 250, in at least one embodiment, is a hydraulic actuator and could therefore be coupled to a hydraulic control line (for example, a hydraulic control line extending to the surface of the wellbore) via the one or more ports 255 in the housing.In yet another embodiment, the actuator 250 is an electric actuator, and could therefore be coupled to an electrical control line (for example, a TEC line extending to the surface of the borehole) via one or more ports 255 in the housing 210.

[0024] In the embodiment of [Fig. 2], the safety valve internal contact 200 further comprises one or more internal contact magnets 260 located in the insulated chamber 240 and coupled to the actuator 250. For example, the movement of the actuator 250 between a first actuator state (e.g., a non-actuated state) and a second actuator state (e.g., an actuated state) can be used to slide the one or more internal contact magnets 260 between a first internal contact magnet state (e.g., as shown in [Fig. 2]) and a second internal contact magnet state (not shown). In at least one embodiment, the one or more The internally spanned connecting magnets 260 are rare-earth permanent magnets. In yet another embodiment, however, one or more internally spanned connecting magnets 260 are electromagnets.

[0025] In the embodiment of [Fig.2], the safety valve internal reach fitting 200 further comprises a power spring 270 located in the insulated chamber 240, and coupled (for example, directly or indirectly) to one or more internal reach fitting magnets 260. The power spring 270, in at least one embodiment, is configured to return the one or more internal reach fitting magnets 260 from the second internal reach fitting magnet state to the first internal reach fitting magnet state when the actuator 250 is not powered.For example, if the power (e.g., hydraulic and / or electrical power) of the actuator 250 were intentionally removed or reduced, the power spring 270 could move (e.g., independently or in conjunction with the actuator 250) one or more internally mounted connecting magnets 260 from the second internally mounted connecting magnet state to the first internally mounted connecting magnet state. Similarly, if the power (e.g., hydraulic and / or electrical power) of the actuator 250 were unintentionally cut off, the power spring 270 would perform its built-in safety function and move (e.g., independently) one or more internally mounted connecting magnets 260 from the second internally mounted connecting magnet state to the first internally mounted connecting magnet state.

[0026] Let us now turn to [Fig. 3], which illustrates an embodiment of a recoverable safety valve insert 300, such as could form part of a safety valve system (for example, the safety valve system 170 of [Fig. 1]), designed and manufactured according to the present invention. The recoverable safety valve insert 300, in at least one embodiment, could operate in conjunction with a safety valve internal seat fitting (for example, the safety valve internal seat fitting 200 of [Fig. 2]) to form a safety valve system. The recoverable safety valve insert 300, in at least one embodiment, includes an external housing 310. The external housing 310, in one or more embodiments, includes a central bore 315 which extends axially through said housing, the central bore 315 allowing the conveyance of bottom production fluids.According to one or more embodiments of the invention, the recoverable safety valve insert 300 may further comprise a valve closing mechanism 320 disposed near one end of the bottom of the hole in the central bore 315. In at least one embodiment, the valve closing mechanism 320 is a poppet valve. However, other types of valve closing mechanisms may be used and remain within the scope of the invention.

[0027] The recoverable safety valve insert 300 of the embodiment of [Fig. 3] may further include a bore flow control actuator 330 disposed in the central bore 315. The bore flow control actuator 330, in the illustrated embodiment, is configured to move between a closed state and a flow state to engage or disengage the valve closing mechanism 320 in order to determine a flow condition for downhole production fluids through the central bore 315. For example, when the bore flow control actuator 330 is in a closed state, the valve closing mechanism 320 prevents downhole production fluids from accessing the central bore 315, and thus prevents downhole production fluids from exiting the wellbore.Conversely, when the bore flow control actuator 330 is in the flow state, it slides downward to keep the valve closing mechanism 320 open, thus allowing downhole production fluids to access the central bore 315 and exit the wellbore. The bore flow control actuator 330 can have many different features and still remain within the scope of the invention. However, in at least one embodiment, the bore flow control actuator 330 includes a flow tube.

[0028] According to the invention, the recoverable safety valve insert 300 may further comprise one or more safety valve insert magnets 340. For example, the one or more safety valve insert magnets 340 may be coupled to (i.e., integrated into) the bore flow control actuator 330. Consequently, when the one or more safety valve insert magnets 340 move, the bore flow control actuator 330 moves. In at least one embodiment, the bore flow control actuator 330 moves in synchronization with the one or more inert safety valve magnets 340.

[0029] In at least one embodiment, the one or more safety valve insert magnets 340 are configured to magnetically couple with one or more internal bearing magnets of the internal bearing connection of the safety valve (for example, the one or more internal bearing magnets 260 of the internal bearing connection of the safety valve 200 of [Fig. 2]). Thus, when the one or more internal bearing magnets of the internal bearing connection of the safety valve move between a first internal bearing magnet state and a second internal bearing magnet state, being magnetically coupled to them, the one or more safety valve insert magnets 340 move between a first safety valve insert magnet state and a second state of safety valve insert magnet. Therefore, the movement of one or more internal bearing fitting magnets of the internal bearing fitting of the safety valve between the first internal bearing fitting magnet state and the second internal bearing fitting magnet state ultimately moves the bore flow management actuator 330 between the closed state and the flow state, thus moving the valve closing mechanism 320 between an open state and a closed state.

[0030] According to the invention, the recoverable safety valve insert 300 may further comprise an internally oriented connection locking element 350. The internally oriented connection locking element 350, in one or more embodiments, is configured to engage (for example, removably engage) with an internally oriented safety valve connection (for example, the locking profile 235 of the internally oriented safety valve connection 200 of [Fig. 2]). Thus, when the internally oriented connection locking element 350 of the recoverable safety valve insert 300 engages with the internally oriented safety valve connection (for example, the locking profile 235 of the internally oriented safety valve connection 200 of [Fig. 2]), the SSSV is assembled and can therefore function to allow or prevent underground production fluid from exiting the borehole.A unique feature of the present invention is that the internal reach fitting locking element 350 can be moved (for example, by means of a drill cable, a slick cable, a coiled casing, a borehole tractor, etc.) between the engaged and disengaged states, and can thus allow the recoverable safety valve insert 300 to be easily inserted into the internal reach safety valve fitting, to be easily removed from it, or, alternatively, a replacement recoverable safety valve insert can be easily inserted inside the internal reach safety valve fitting, as mentioned above.

[0031] The locking element of the internally retracted fitting 350, in one or more embodiments, comprises a sliding sleeve 360 ​​and one or more locking elements 370. In the illustrated embodiment, the sliding sleeve 360 ​​extends at least partially around the bore flow control actuator 330 and can slide relative to it. Furthermore, the locking elements 370, in one or more embodiments, are movable from a radially retracted state to a radially extended state (for example, extending through one or more openings in the external housing 310).For example, in at least one embodiment, when the sliding sleeve slides relative to the bore flow control actuator 330, the sliding sleeve 360 ​​engages with a radially inner surface of the locking element 370 to move the locking element from the radially retracted state to the radially extended state. extended. When the retrievable safety valve insert 300 is appropriately positioned inside a safety valve internal reach fitting (e.g., the safety valve internal reach fitting 200 of [Fig. 2]), the movement of the sliding sleeve 360 ​​moves the locking element 370 from the radially retracted state to the radially extended state by engaging with a locking profile (e.g., the locking profile 235 of [Fig. 2]) in the safety valve internal reach fitting. In the illustrated embodiment, the locking element of the internal reach fitting 350 extends inward and, in some embodiments, forms part of the outer housing 310 and / or the bore flow control actuator 330.Other embodiments exist, however, where the locking element of the internally reaching fitting 350 does not extend inwards or form part of the external housing 310 and / or the bore flow control actuator 330. For example, the locking element of the internally reaching fitting 350, in some embodiments, forms a separate element distinct from the bore flow control actuator 330.

[0032] According to the invention, the recoverable safety valve insert 300 may further comprise one or more seals 380. In at least one embodiment, the one or more seals 380 are one or more stacked seals that engage with a surface of the safety valve's internally seated connection. In at least one other embodiment, the one or more seals 380 are one or more stacked seals that engage with a polished bore receptacle (for example, a polished bore receptacle 238 of [Fig. 2]) of the safety valve's internally seated connection. In still other embodiments, the one or more seals 380 are thermoplastic, elastomeric, or metal-on-metal seals, among others.

[0033] Let us now turn to [Fig. 4A] to 41, which illustrate an embodiment for assembling (for example, bottom-filling) and operating an SSSV 400 according to one or more embodiments of the invention, comprising the insertion and locking of a recoverable safety valve insert 420a into a safety valve internal seat fitting 410. In the embodiment illustrated in [Fig. 4A] to 41, the safety valve internal seat fitting 410 is similar in many respects to the safety valve internal seat fitting 200 of [Fig. 2], and thus the same numerals have been used to indicate similar, if not identical, elements. Similarly, in the embodiment illustrated in [Fig. 4A] to 41, the recoverable safety valve insert 420a is similar in many respects to the recoverable safety valve insert 300 of [Fig. 2].3], and thus the same numerical references were used to indicate similar, if not identical, elements. Although not illustrated, the valve's internal reach fitting. The 410 safety valve insert could be interconnected between pairs of oilfield tubing elements, for example, between pairs of threaded-joint tubing. Furthermore, although not illustrated, a downhole transport means, such as a drill cable, spool cable, coiled casing, drill tractor, etc., can be coupled to the 420a recoverable safety valve insert to place, secure, and retrieve the 420a recoverable safety valve insert into / from the 410 safety valve's internal reach fitting.

[0034] With reference to [Fig. 4A], the safety valve inner reach fitting 410 and the recoverable safety valve insert 420a are separated from each other, for example, because they could be positioned when the recoverable safety valve insert 420a moves in the borehole towards the safety valve inner reach fitting 410. As shown in the embodiment of [Fig. 4A], the actuator 250 of the safety valve inner reach fitting 410 is in a first actuator state. As further shown in the embodiment of [Fig. 4A], the valve closing mechanism 320 and the bore flow control actuator 330 of the recoverable safety valve insert 420a are in the closed state.Furthermore, one or more locking elements 370 of the recoverable safety valve insert 420a may be in the radially retracted state, because the sliding sleeve 360 ​​must still slide to move one or more locking elements 370 to the radially extended state.

[0035] With reference to [Fig. 4B], this illustrates the SSSV 400 of [Fig. 4A] after a small portion of the recoverable safety valve insert 420a has entered the safety valve internal reach fitting 410. In the embodiment of [Fig. 4B], a downhole end of the recoverable safety valve insert 420a approaches one or more magnets of the internal reach fitting 260. The safety valve internal reach fitting 410 and the recoverable safety valve insert 420a are substantially in the same operational configuration in [Fig. 4B] as they were in [Fig. 4A], except that a small portion of the recoverable safety valve insert 420a has entered the safety valve internal reach fitting 410.

[0036] With reference to [Fig. 4C], this illustrates the SSSV 400 of [Fig. 4B] after a large portion of the recoverable safety valve insert 420a has entered the safety valve internal seat fitting 410. In the embodiment of [Fig. 4C], one downhole end of the recoverable safety valve insert 420a approaches a polished bore receptacle 238. The safety valve internal seat fitting 410 and the recoverable safety valve insert 420a are substantially in the same operational configuration in [Fig. 4C] as they were in [Fig. 4B], except that a large portion of the safety valve insert Recoverable 420a entered the fitting with internal reach of safety valve 410.

[0037] With reference to [Fig. 4D], this illustrates the SSSV 400 of [Fig. 4C] after virtually the entire recoverable safety valve insert 420a has entered the safety valve internal seat fitting 410. In the embodiment of [Fig. 4D], the locking element 370 approaches the locking profile 235. The safety valve internal seat fitting 410 and the recoverable safety valve insert 420a are substantially in the same operational configuration in [Fig. 4D] as they were in [Fig. 4C], except that virtually the entire recoverable safety valve insert 420a has entered the safety valve internal seat fitting 410.

[0038] With reference to [Fig. 4E], this illustrates the SSSV 400 of [Fig. 4D] after the locking element 370 is positioned under the locking profile 235, and the sliding sleeve 360 ​​has slid downwards, moving the locking element 370 from its radially retracted to its radially extended state. Consequently, the locking element 370 now engages with the locking profile 235. In addition, one or more safety valve insert magnets 340 are now magnetically coupled to one or more internally resonating coupling magnets 260. Furthermore, one or more seals 380 are in a tight contact with the polished bore receptacle 238. Therefore, the SSSV 400 is now assembled and operational.

[0039] With reference to [Fig. 4F], this illustrates the SSSV 400 of [Fig. 4E] after the actuator 250 has transitioned from the first actuator state to the second actuator state. In doing so, the actuator 250 has moved one or more internally receptive coupling magnets 260 from the first internally receptive coupling magnet state to the second internally receptive coupling magnet state. Furthermore, since one or more safety valve insert magnets 340 are magnetically coupled to one or more internally receptive coupling magnets 260, the one or more safety valve insert magnets 340 transition from the first safety valve insert magnet state to the second safety valve insert magnet state.Furthermore, when the bore flow control actuator 330 is coupled to one or more safety valve insert magnets 340, the bore flow control actuator 330 changes from the closed state to the open state, the open state allowing underground production fluid to move through the SSSV 400.

[0040] With reference to [Fig. 4G], this illustrates the SSSV 400 of [Fig. 4F] after the actuator 250 has returned from the second actuator state to the first actuator state. In doing so, the actuator 250 (and / or, for example, the power spring 270) has returned one or more internally receptive connecting magnets 260 from the second internally receptive connecting magnet state to the first internally receptive connecting magnet state. Furthermore, as the one or more safety valve insert magnets 340 are magnetically coupled to the one or more internal reach fitting magnets 260, the one or more safety valve insert magnets 340 return from the second safety valve insert magnet state to the first safety valve insert magnet state. Furthermore, when the bore flow control actuator 330 is coupled to one or more safety valve insert magnets 340, the bore flow control actuator 330 returns from the open state to the closed state, the closed state preventing the underground production fluid from moving through the SSSV 400.

[0041] In at least one embodiment, the power spring 270 is configured to return the one or more internal reach fitting magnets 260 from the second internal reach fitting magnet state to the first internal reach fitting magnet state when the actuator 250 is not energized.For example, if the power (e.g., hydraulic and / or electrical power) of the actuator 250 were intentionally removed or reduced, the power spring 270 could move (e.g., independently or in conjunction with the actuator 250) one or more internally mounted connecting magnets 260 from the second internally mounted connecting magnet state to the first internally mounted connecting magnet state. Similarly, if the power (e.g., hydraulic and / or electrical power) of the actuator 250 were unintentionally cut off, the power spring 270 would perform its built-in safety function and move (e.g., independently) one or more internally mounted connecting magnets 260 from the second internally mounted connecting magnet state to the first internally mounted connecting magnet state.

[0042] With reference to [Fig. 4H], this illustrates the SSSV 400 of [Fig. 4G] after the recoverable safety valve insert 420a has been removed from the safety valve internal reach fitting 410, and after the installation of a replacement recoverable safety valve insert 420b in the safety valve internal reach fitting 410. The replacement recoverable safety valve insert 420b is similar in many respects to the recoverable safety valve insert 420a. Accordingly, the same numerals have been used to denote similar, if not identical, features.

[0043] With reference to [Fig.4I], this illustrates the SSSV 400 of [Fig.4H] ​​after the replacement recoverable safety valve insert 420b is fully assembled in the safety valve internal reach fitting 410. Therefore, the SSSV 400 is now assembled and operational with the replacement recoverable safety valve insert 420b.

[0044] Let us now turn to [Fig. 5], which illustrates an embodiment of an internally oriented safety valve 500 fitting, such as could be part of an SSSV (for example, the SSSV 170 of [Fig. 1]), designed and manufactured according to another method of embodiment of the present invention. The safety valve internal reach fitting 500 is similar in many respects to the safety valve internal reach fitting 200 of [Fig. 2]. Accordingly, the same numerals have been used to denote similar, if not identical, features. The safety valve internal reach fitting 500 differs essentially from the safety valve internal reach fitting 200 in that the safety valve internal reach fitting 500 has a second locking profile 535 closer to the second end 230. The second locking profile 535, in at least one embodiment, is a locking profile specially designed and configured to engage with a lock of a recoverable safety valve insert (for example, the recoverable safety valve insert 600 of [Fig. 6]).

[0045] Let us now turn to [Fig. 6], which illustrates an embodiment of a recoverable safety valve insert 600, such as could be part of a SSSV (for example, the SSSV 170 of [Fig. 1]), designed and manufactured according to another embodiment of the present invention. The recoverable safety valve insert 600 is similar in many respects to the recoverable safety valve insert 300 of [Fig. 3]. Accordingly, the same numerals have been used to denote similar, if not identical, features. The recoverable safety valve insert 600 differs, essentially, from the recoverable safety valve insert 300, in that the outer casing 610 of the recoverable safety valve insert 600 does not surround and fix the locking element of the internally reached fitting 650 with the bore flow control actuator 330 and the one or more safety valve insert magnets 340.As the locking element of the internally reached fitting 650, and the bore flow control actuator 330 and one or more safety valve insert magnets 340 are separate and distinct elements, the recoverable safety valve insert 600 further includes a second locking element 670 for fixing the external housing 310 relative to the internally reached fitting of the safety valve (for example using the second locking profile 535 in the internally reached fitting of the safety valve 500 of [Fig.5]).

[0046] The recoverable safety valve insert 600 of [Fig. 6] increases the coupling force for one or more safety valve insert magnets and one or more internally reaching coupling magnets. Furthermore, the recoverable safety valve insert 600 provides a larger ID than other designs. These advantages are possible because the second locking element 670 can function as the primary locking element, allowing the outer housing 610 to be removed from around the bore flow control actuator 330.

[0047] Let us now turn to [Fig. 7A] to [7K], which illustrate an embodiment for assembling (e.g., filling downholes) and operating an SSSV 700 according to one or more other embodiments of the invention, comprising the insertion and locking of a recoverable safety valve insert 720a into a safety valve internal seat fitting 710. In the embodiment illustrated in [Fig. 7A] to [7K], the safety valve internal seat fitting 710 is similar in many respects to the safety valve internal seat fitting 500 of [Fig. 5], and thus the same numerals have been used to indicate similar, if not identical, elements. Similarly, in the embodiment illustrated in [Fig. 7A] to [7H], the recoverable safety valve insert 720a is similar in many respects to the recoverable safety valve insert 600 of [Fig. 5].6], and thus the same numerical references have been used to denote similar, if not identical, items. Although not shown, the 710 safety valve inside reach fitting could be interconnected between pairs of oilfield tubing elements, for example, between pairs of threaded-joint tubing. In addition, although not shown, a downhole transport means, such as a drill cable, spool cable, casing reel, drill tractor, etc., can be coupled to the 720a recoverable safety valve insert to place, secure, and retrieve the 720a recoverable safety valve insert into / from the 710 safety valve inside reach fitting.

[0048] With reference to [Fig. 7A], the safety valve inner reach fitting 710 and the recoverable safety valve insert 720a are separated from each other, for example, because they could be positioned when the recoverable safety valve insert 720a moves in the borehole towards the safety valve inner reach fitting 710. As shown in the embodiment of [Fig. 7A], the actuator 250 of the safety valve inner reach fitting 710 is in a first actuator state. As further shown in the embodiment of [Fig. 7A], the valve closing mechanism 320 and the bore flow control actuator 330 of the recoverable safety valve insert 720a are in the closed state.Furthermore, one or more locking elements 370 of the recoverable safety valve insert 720a may be in the radially retracted state, because the sliding sleeve 360 ​​must still slide to move one or more locking elements 370 to the radially extended state. Additionally, the second locking element 670 may be in the radially retracted state, because the bore flow control actuator 330 must still slide to move the second locking element 670 to the radially extended state.

[0049] With reference to [Fig. 7B], this illustrates the SSSV 700 of [Fig. 7A] after a small part of the recoverable safety valve insert 720a has entered the safety valve internal reach fitting 710. In the embodiment of [Fig.7B], one bottom-of-hole end of the recoverable safety valve insert 720a approaches one or more magnets of the internal reach fitting 260. The safety valve internal reach fitting 710 and the recoverable safety valve insert 720a are substantially in the same operational configuration in [Fig.7B] as they were in [Fig.7A], except that a small part of the recoverable safety valve insert 720a has entered the safety valve internal reach fitting 710.

[0050] With reference to [Fig. 7C], this illustrates the SSSV 700 of [Fig. 7B] after a large portion of the recoverable safety valve insert 720a has entered the safety valve internal seat fitting 710. In the embodiment of [Fig. 7C], one downhole end of the recoverable safety valve insert 720a approaches a polished bore receptacle 238. The safety valve internal seat fitting 710 and the recoverable safety valve insert 720a are substantially in the same operational configuration in [Fig. 7C] as they were in [Fig. 7B], except that a large portion of the recoverable safety valve insert 720a has entered the safety valve internal seat fitting 710.

[0051] With reference to [Fig. 7D], this illustrates the SSSV 700 of [Fig. 7C] after virtually the entire recoverable safety valve insert 720a has entered the safety valve internal reach fitting 710. For example, the internal reach fitting locking element 650 remains outside the safety valve internal reach fitting 710, but the second locking element 670 approaches the second locking profile 535. The safety valve internal reach fitting 710 and the recoverable safety valve insert 720a are substantially in the same operational configuration in [Fig. 7D] as they were in [Fig. 7C], except that virtually the entire recoverable safety valve insert 720a has entered the safety valve internal reach fitting 710.

[0052] With reference to [Fig. 7E], this illustrates the SSSV 700 of [Fig. 7D] after the second locking element 670 is positioned under the second locking profile 535, and the bore flow control actuator 330 has slid downwards, moving the second locking element 670 from the radially retracted state to the radially extended state. Consequently, the second locking element 670 now engages with the second locking profile 535. In addition, one or more safety valve insert magnets 340 are now magnetically coupled to one or more internally reaching coupling magnets 260. Furthermore, one or more seals 380 are in a tight contact with the polished bore receptacle 238.

[0053] With reference to [Fig.7F], this illustrates the SSSV 700 of [Fig.7E] after the internally retracted locking element 650 has been moved at least partially into the internally retracted safety valve fitting 710. In the illustrated embodiment, the locking element 370 is located under the locking profile 235, but the locking element 370 remains in the radially retracted state.

[0054] With reference to [Fig. 7G], this illustrates the SSSV 700 of [Fig. 7F] after the sliding sleeve 360 ​​has slid downwards, moving the locking element 370 from the radially retracted state to the radially extended state. Consequently, the locking element 370 now engages with the locking profile 235. Thus, the SSSV 700 is now assembled and operational.

[0055] With reference to [Fig. 7H], this illustrates the SSSV 700 of [Fig. 7G] after the actuator 250 has transitioned from the first actuator state to the second actuator state. In doing so, the actuator 250 has moved one or more internally receptive coupling magnets 260 from the first internally receptive coupling magnet state to the second internally receptive coupling magnet state. Furthermore, since one or more safety valve insert magnets 340 are magnetically coupled to one or more internally receptive coupling magnets 260, the one or more safety valve insert magnets 340 transition from the first safety valve insert magnet state to the second safety valve insert magnet state.Furthermore, when the bore flow control actuator 330 is coupled to one or more safety valve insert magnets 340, the bore flow control actuator 330 changes from the closed state to the open state, the open state allowing underground production fluid to move through the SSSV 700.

[0056] With reference to [Fig. 7I], this illustrates the SSSV 700 of [Fig. 7H] after the actuator 250 has returned from the second actuator state to the first actuator state. In doing so, the actuator 250 (and / or, for example, the power spring 270) has returned the one or more internally receptive connecting magnets 260 from the second internally receptive connecting magnet state to the first internally receptive connecting magnet state. Furthermore, since the one or more safety valve insert magnets 340 are magnetically coupled to the one or more internally receptive connecting magnets 260, the one or more safety valve insert magnets 340 return from the second safety valve insert magnet state to the first safety valve insert magnet state.Furthermore, when the bore flow control actuator 330 is coupled to one or more safety valve insert magnets 340, the bore flow control actuator 330 returns from the open state to the closed state, the closed state preventing underground production fluid from moving through the SSSV 700.

[0057] With reference to [Fig. 7J], this illustrates the SSSV 700 of [Fig. 7I] after the recoverable safety valve insert 720a has been removed from the internally reach fitting of safety valve 710, and after the installation of a replacement recoverable safety valve insert 720b in the internal reach fitting of safety valve 710. The replacement recoverable safety valve insert 720b is similar in many respects to the recoverable safety valve insert 720a. Consequently, the same numerical references have been used to indicate similar, if not identical, items.

[0058] With reference to [Fig.7K], this illustrates the SSSV 700 of [Fig.7J] after the replacement recoverable safety valve insert 720b is fully assembled in the safety valve internal reach fitting 710. Therefore, the SSSV 700 is now assembled and operational with the replacement recoverable safety valve insert 720b.

[0059] The aspects described in the present invention include:

[0060] A. a recoverable safety valve insert, the safety valve insert recoverable comprising: 1) an external housing having a central bore extending axially through the external housing, the central bore allowing downhole production fluids to be conveyed through said housing; 2) a valve closing mechanism coupled to the external housing near a downhole end of the central bore; 3) a bore flow management actuator disposed in the central bore, the bore flow management actuator being configured to slide in order to move the valve closing mechanism between a closed state and an open state;and 4) one or more safety valve insert magnets coupled to the bore flow management actuator, the one or more safety valve insert magnets being configured to magnetically couple with one or more internal bearing fitting magnets of a safety valve internal bearing fitting to slide the bore flow management actuator and move the valve closing mechanism between the closed and open states.

[0061] B. an internal reach fitting of a safety valve, the internal reach fitting of the safety valve comprising: 1) a housing having a passage extending from a first end to a second end of said housing; 2) an insulated chamber located in the housing; 3) an actuator positioned inside the insulated chamber; and 4) one or more internal reach fitting magnets coupled to the actuator inside the insulated chamber, the one or more internal reach fitting magnets being configured to transition from a first internal reach fitting magnet state to a second internal reach fitting state when the actuator transitions from a first actuator state to a second actuator state, the one or more internal reach fitting magnets being configured to be magnetically coupled to one or more safety valve insert magnets located in the passage.

[0062] C. a well system, the well system comprising: 1) a borehole extending through one or more subsurface formations; 2) production tubing disposed in the borehole; 3) a downhole safety valve (DSV) disposed in line with the production tubing, the downhole safety valve (DSV) comprising: a) a safety valve internal seat fitting, the safety valve internal seat fitting comprising a housing having a passage extending from a first end to a second end of said housing; and b) a recoverable safety valve insert situated inside the safety valve internal seat fitting, the recoverable safety valve insert comprising: i) an outer housing having a central bore extending axially through the outer housing, the central bore allowing downhole production fluids to be conveyed through said housing;ii) a valve closing mechanism coupled to the external housing near one downhole end of the central bore; iii) a bore flow management actuator disposed in the central bore, the bore flow management actuator being configured to slide in order to move the valve closing mechanism between a closed state and an open state; and iv) one or more safety valve insert magnets coupled to the bore flow management actuator, the one or more safety valve insert magnets being magnetically coupled with one or more inside-reach fitting magnets of the safety valve inside-reach fitting to slide the bore flow management actuator and move the valve closing mechanism between the closed state and the open state.

[0063] D. Method for assembling and operating a downhole safety valve (DSV), the method comprising: 1) positioning a safety valve internally seated fitting arranged in line with production tubing in a borehole, the safety valve internally seated fitting comprising: a) a housing having a passage extending from a first end to a second end of said housing; b) an insulated chamber located in the housing; c) an actuator located in the insulated chamber; and d) one or more internally seated fitting magnets coupled to the actuator in the insulated chamber;and 2) the insertion of a recoverable safety valve insert inside the safety valve internal reach fitting located in the borehole, the recoverable safety valve insert comprising: a) an external housing including a central bore extending axially through the external housing, the central bore allowing downhole production fluids to be conveyed through said housing; b) a valve closing mechanism coupled to the external housing near a downhole end of the central bore; c) a bore flow management actuator disposed in the central bore, the bore flow management actuator being configured to slide in order to move the mechanism; valve closing mechanism between a closed state and an open state; and (d) one or more safety valve insert magnets coupled to the bore flow management actuator, the one or more safety valve insert magnets being configured to magnetically couple with the one or more inside-reach fitting magnets of the safety valve inside-reach fitting to slide the bore flow management actuator and move the valve closing mechanism between the closed state and the open state.

[0064] Aspects A, B, and C may include a combination of one or more of the following additional elements: Element 1: further comprising an internally oriented connection locking element. Element 2: wherein the internally oriented connection locking element comprises a sliding sleeve and one or more locking elements, the one or more locking elements being configured to engage with one or more locking profiles in the internally oriented connection of the safety valve. Element 3: wherein the sliding sleeve is configured to slide in order to move the one or more locking elements from a radially retracted state to a radially extended state to engage with the one or more locking profiles in the internally oriented connection of the safety valve.Element 4: wherein the outer housing completely surrounds the bore flow control actuator and couples to, and surrounds, at least a portion of the locking element of the internally oriented fitting. Element 5: wherein the locking element of the internally oriented fitting is slidably attached to the bore flow control actuator. Element 6: wherein one or more locking elements are configured to extend through the outer housing to engage with one or more locking profiles in the internally oriented fitting of the safety valve. Element 7: wherein the locking element of the internally oriented fitting and the bore flow control actuator are separate and distinct elements.Component 8: wherein one or more locking elements are one or more first locking elements for removably securing the internally mounted fitting locking element to the internally mounted safety valve fitting, and further comprising one or more second locking elements located near a bottom-hole end of the retrievable safety valve, the one or more second locking elements being configured to engage with one or more second locking profiles in the internally mounted safety valve fitting to removably secure the outer housing to the internally mounted safety valve fitting. Component 9: further comprising one or more seals arranged radially around the outer housing, the one or more seals being configured to engage with a polished bore receptacle of the fitting. Internally oriented safety valve. Element 10: further comprising a power spring located in the insulated chamber and coupled to one or more internally oriented connecting magnets, the power spring being configured to return the one or more internally oriented connecting magnets from the second internally oriented connecting magnet state to the first internally oriented connecting magnet state. Element 11: further comprising a locking profile located in the passage, the locking profile being configured to engage with a lock of a recoverable safety valve insert. Element 12: wherein the locking profile is a first locking profile located near the first end, and further comprising a second locking profile located near the second end.Element 13: further comprising a polished bore receptacle located near the second end, the polished bore receptacle being configured to engage with a seal of a recoverable safety valve insert. Element 14: wherein the recoverable safety valve insert further comprises an internally oriented connection locking element, the internally oriented connection locking element comprising a sliding sleeve and one or more locking elements, and further comprising sliding the sliding sleeve to move the one or more locking elements from a radially retracted state to a radially extended state to engage with one or more locking profiles in the internally oriented safety valve connection.Element 15: wherein the insertion of a recoverable safety valve insert into the safety valve internally seated fitting comprises the magnetic coupling of one or more internally seated fitting magnets with one or more safety valve insert magnets. Element 16: further comprising the actuation of the actuator to move the internally seated fitting magnets from a first internally seated fitting magnet state to a second internally seated fitting magnet state and, in turn, to move the one or more safety valve magnets from a first safety valve insert magnet state to a second safety valve insert magnet state, and the bore flow control actuator to move the valve closing mechanism from the closed state to the open state.Component 17: further comprising the removal of the recoverable safety valve insert from inside the safety valve internal reach fitting, and then the insertion of a replacement recoverable safety valve insert into the safety valve internal reach fitting. Component 18: wherein the insertion and removal involve the use of a drill cable, casing reel, or well tractor for replacement and removal. Component 19: wherein the insertion of the recoverable safety valve insert into the safety valve internal reach fitting involves the insertion of the recoverable safety valve insert into the valve internal reach fitting. safety in a single downhole path. Element 20: wherein the insertion of the recoverable safety valve insert inside the safety valve internal bearing fitting comprises the insertion of the recoverable safety valve insert into the safety valve internal bearing fitting in two downhole paths.

[0065] The person skilled in the art concerned with this request will understand that other additions, deletions, substitutions and modifications may be made to the embodiments described.

Claims

Demands

1. Recoverable safety valve insert (300), comprising: an outer housing (310) having a central bore (315) extending axially through the outer housing, the central bore allowing bottom-stage production fluids to be conveyed through said housing; a valve closing mechanism coupled to the outer housing near a downhole end of the central bore; a bore flow management actuator (330) disposed in the central bore, the bore flow management actuator being configured to slide in order to move the valve closing mechanism (320) between a closed state and an open state;one or more safety valve insert magnets (340) coupled to the bore flow management actuator, the one or more safety valve insert magnets being configured to magnetically couple with one or more inside-reach fitting magnets (260) of a safety valve inside-reach fitting (200) to slide the bore flow management actuator and move the valve closing mechanism between the closed and open states;and an internally reached fitting locking element (350), wherein the internally reached fitting locking element (350) comprises a sliding sleeve (360) and one or more locking elements, the one or more locking elements (370) being configured to engage with one or more locking profiles (235) in the internally reached safety valve fitting (200), wherein the sliding sleeve (360) is configured to slide in order to move the one or more locking elements (350) from a radially retracted state to a radially extended state to engage with the one or more locking profiles (235) in the internally reached safety valve fitting (200).

2. Recoverable safety valve insert (300) according to claim 1, wherein the outer housing (310) completely surrounds the bore flow control actuator (330) and couples to, and surrounds, at least a portion of the internally reaching fitting locking element (350).

3. Recoverable safety valve insert (300) according to claim 1 or 2, wherein the internally reaching fitting locking element is slidably fixed to the bore flow control actuator.

4. Recoverable safety valve insert (300) according to any one of the preceding claims, wherein one or more locking elements are configured to extend through the outer housing in order to engage with one or more locking profiles (235) in the inner reach fitting of the safety valve (200).

5. Recoverable safety valve insert (300) according to any one of the preceding claims, wherein the internally reached fitting locking element and the bore flow management actuator are separate and distinct elements.

6. Recoverable safety valve insert (300) according to any one of the preceding claims, wherein the one or more locking elements are one or more first locking elements for removably fixing the internally reached fitting locking element to the internally reached fitting of the safety valve, and further comprising one or more second locking elements located near a bottom-hole end of the recoverable safety valve, the one or more second locking elements being configured to engage with one or more second locking profiles in the internally reached fitting of the safety valve to removably fix the external housing to the internally reached fitting of the safety valve.

7. Recoverable safety valve insert (300) according to claim 1, further comprising one or more seals (380) arranged radially around the outer housing (310), the one or more seals being configured to engage with a polished bore receptacle (238) of the safety valve internal seat fitting (200).

8. Safety valve internal reach fitting (200), comprising: a housing (210) having a passage (220) extending from a first end (225) to a second end (230) of said housing; an insulated chamber (240) located in the housing; an actuator (250) positioned inside the insulated chamber; one or more internally reached connecting magnets (260) coupled to the actuator inside the insulated chamber, the one or more internally reached connecting magnets being configured to transition from a first internally reached connecting magnet state to a second internally reached connecting magnet state when the actuator transitions from a first actuator state to a second actuator state, the one or more internally reached connecting magnets being configured to be magnetically coupled to one or more safety valve insert magnets (340) located in the passage;and a locking profile (235) located in the passage, the locking profile being configured to engage with a lock of a recoverable safety valve insert (300), or, optionally, wherein the locking profile is a first locking profile located near the first end (225), and further comprising a second locking profile located near the second end (230).

9. Safety valve internal reach fitting (200) according to claim 8, further comprising a power spring (270) located in the insulated chamber (240) and coupled to one or more internal reach fitting magnets (260), the power spring being configured to return the one or more internal reach fitting magnets from the second internal reach fitting magnet state to the first internal reach fitting magnet state.

10. Safety valve internal reach fitting (200) according to claim 8, further comprising a polished bore receptacle (238) located near the second end (230), the polished bore receptacle being configured to engage with a seal of a recoverable safety valve insert.

11. Well system (100), comprising: a borehole (130) extending through one or more subsurface formations; a production casing disposed in the borehole; a downhole safety valve (DSV) (170) disposed in line with the production casing, the downhole safety valve (DSV) comprising: a safety valve internal seat fitting (200), the safety valve internal seat fitting comprising a housing (210)

12. having a passage (220) extending from a first end (225) to a second end (230) of said housing; and a recoverable safety valve insert (300) located inside the safety valve internal seat fitting, the recoverable safety valve insert comprising: an external housing (310) having a central bore (315) extending axially through the external housing, the central bore allowing bottom production fluids to be conveyed through said housing; a valve closing mechanism (320) coupled to the external housing near one end of the bottom of the hole of the central bore; a bore flow control actuator (330) disposed in the central bore, the bore flow control actuator being configured to slide in order to move the valve closing mechanism between a closed state and an open state; one or more safety valve insert magnets (340) coupled to the bore flow management actuator, the one or more safety valve insert magnets being magnetically coupled with one or more inside-reach fitting magnets of the safety valve inside-reach fitting to slide the bore flow management actuator and move the valve closing mechanism between the closed and open states; And an inside reach fitting locking element (350), wherein the inside reach fitting locking element (350) comprises a sliding sleeve (360) and one or more locking elements, the one or more locking elements (370) being configured to engage with one or more locking profiles (235) in the inside reach fitting of the safety valve (200). Method for assembling and operating a bottom safety valve (170) (SSSV), comprising: the positioning of an internally oriented safety valve fitting (200) arranged in line with a production casing in a borehole (130), the internally oriented safety valve fitting comprising: a housing (210) having a passage (220) extending from a first end (225) to a second end (230) of said housing; an isolated chamber (240) located in the casing; an actuator (250) located in the insulated chamber; and one or more internally mounted connecting magnets (260) coupled to the actuator in the insulated chamber; and the insertion of a recoverable safety valve insert (300) inside the safety valve internal reach fitting located in the borehole, the recoverable safety valve insert comprising: an external housing (310) comprising a central bore (315) extending axially through the external housing, the central bore allowing bottom production fluids to be conveyed through said housing; a valve closing mechanism (320) coupled to the external housing near one end of the bottom of the hole of the central bore; a bore flow control actuator (330) disposed in the central bore, the bore flow control actuator being configured to slide in order to move the valve closing mechanism between a closed state and an open state; one or more safety valve insert magnets coupled to the bore flow management actuator, the one or more safety valve insert magnets being configured to magnetically couple with the one or more internal bearing magnets of the safety valve internal bearing to slide the bore flow management actuator and move the valve closing mechanism between the closed and open states; and an internally oriented fitting locking element (350), wherein the internally oriented fitting locking element (350) comprises a sliding sleeve (360) and one or more locking elements, the one or more locking elements (370) being configured to engage with one or more locking profiles (235) in the internally oriented safety valve fitting (200), in which the sliding sleeve (360) is configured to slide in order to move one or more locking elements (350) from a radially retracted state to a radially extended state to engage with one or more locking profiles (235) in the safety valve internal reach fitting (200).

13. A method according to claim 12, wherein the insertion of the recoverable safety valve insert (300) inside the safety valve internally seated fitting comprises the magnetic coupling of one or more internally seated fitting magnets (260) with one or more safety valve insert magnets (340), or optionally further comprising the actuation of the actuator (330) to move the internally seated fitting magnets from a first internally seated fitting magnet state to a second internally seated fitting magnet state and, in turn, move the one or more safety valve magnets from a first safety valve insert magnet state to a second safety valve insert magnet state and the bore flow control actuator to move the valve closing mechanism (320) from the closed state to the open state.

14. A method according to claim 12, further comprising removing the recoverable safety valve insert from inside the safety valve inside-reach fitting, and then inserting a replacement recoverable safety valve insert into the safety valve inside-reach fitting, or, optionally, wherein the insertion and removal involve the use of a drill cable, coiled casing, or wellbore tractor for replacement and removal.

15. A method according to claim 12, wherein the insertion of the recoverable safety valve insert (300) inside the safety valve internal seat fitting (410) comprises the insertion of the recoverable safety valve insert into the safety valve internal seat fitting in a single downhole pass, or, optionally, wherein the insertion of the recoverable safety valve insert inside the safety valve internal seat fitting comprises the insertion of the recoverable safety valve insert into the safety valve internal seat fitting in two downhole passes.

Images