Subsea intervention winch

Abstract

A subsea winch assembly that includes a winch, a spooling device attached to the winch, one or more motor drive system attached to the winch and the spooling device, an outer housing to encase the winch and the one or more motor drives, and a bladder system located inside the outer housing, wherein the spooling device is located outside of the outer housing. In another embodiment, a subsea winch assembly arrangement is described to include a winch, a spooling device attached to the winch, one or more motor drive system attached to the winch and the spooling device, an outer housing to encase the winch, the spooling device, and the one or more motor drives, and a bladder system located inside the outer housing.

Description

ATTORNEY DOCKET IS24.0984SUBSEA INTERVENTION WINCHCROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The current application claims priority to United States Provisional Patent Application 63 / 683,016 filed August 14, 2024, the entirety of which is incorporated by reference.FIELD OF THE DISCLOSURE

[0002] Aspects of the disclosure relate to hydrocarbon recovery tools. More specifically, aspects of the disclosure relate to subsea intervention winches.BACKGROUND

[0003] Well operations in shallow depth waters sometimes utilize a floating vessel having coiled tubing and various hydraulic hoses and electric cables. A catenary system creates slack in the coiled tubing or the hydraulic hose between a subsea tree and a reel mounted on the floating vessel. In certain situations, mechanical intervention devices may need to be introduced into an intervention flow path, which introduces additional operational considerations as well as increasing the cost of equipment to enable the use of such mechanical intervention devices.

[0004] There is a large cost associated with light workover intervention of offshore wells driven by the rig time required. As mentioned previously, a subsea intervention system may be deployed by smaller more cost-effective vessels; however, this may be timeconsuming. Therefore, to tackle this problem, by moving the winch to a subsea environment, operations may be simplified and reduce vessel requirements.

[0005] Due to the rough subsea conditions and environment, subsea winches tend to wear and tear at a faster rate, which may lead to additional cost and time wasted. Therefore, there is a need for a sturdier subsea winch that could withstand harsher environments.ATTORNEY DOCKET IS24.0984

[0006] There is a further need to provide for subsea winch systems that are easy to operate and that do not require extensive training for field personnel.

[0007] There is a further need to provide for a subsea winch system that may be easily repaired by field personnel.

[0008] There is still a further need to provide a subsea winch system that interacts with existing component systems used in hydrocarbon recover projects.

[0009] There is a further need to provide a subsea winch that is more economical to use than conventional winches.

[0010] There is a further need to provide a subsea winch that may be used with existing tools to enhance operational support of field needs without drastically increasing the inventory of tools already used for intervention and field operations.SUMMARY

[0011] So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the disclosure, briefly summarized below, may be had by reference to embodiments, some of which are illustrated in the drawings. It is to be noted that the drawings illustrate only typical embodiments of this disclosure and are therefore not to be considered limiting of its scope, for the disclosure may admit to other equally effective embodiments without specific recitation. Accordingly, the following summary provides just a few aspects of the description and should not be used to limit the described embodiments to a single concept.

[0012] In one example embodiment, a subsea winch assembly is disclosed. The subsea winch assembly may comprise a winch with an incorporated spooling device. The subsea winch assembly may also comprise one or more motor drive systems attached to the winch and the spooling device. The subsea winch assembly may also comprise an outer housing configured with an internal volume, the outer housing encasing the winch and theATTORNEY DOCKET IS24.0984 one or more motor drive systems. The subsea winch assembly may also comprise a bladder system located inside the outer housing.

[0013] In one example embodiment, a subsea winch assembly is disclosed. The subsea winch assembly may comprise a winch with an incorporated spooling device. The subsea winch assembly may also comprise one or more motor drive systems attached to the winch and the spooling device. The subsea winch assembly may also comprise an outer housing configured with an internal volume, the outer housing encasing the winch, the spooling device, and the one or more motor drives. The subsea winch assembly may also comprise a bladder system located inside the outer housing.

[0014] In another example embodiment, a subsea winch assembly is disclosed. The winch assembly may comprise a winch vessel defining an interior volume and a winch placed within the interior volume. The subsea winch assembly may further comprise a frame structure placed within the interior volume. The subsea winch assembly may further comprise a spooling device attached to the winch and the frame structure. The subsea winch assembly may further comprise one or more motor drive systems attached to the winch, the frame structure and the spooling device. The subsea winch assembly may further comprise an outer housing configured with an internal volume, the outer housing encasing the winch and the one or more motor drive systems and a bladder system located inside the outer housing.BRIEF DESCRIPTION OF THE DRAWINGS

[0015] So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the disclosure, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the drawings. It is to be noted; however, that the appended drawings illustrate only typical embodiments of this disclosure and are; therefore, not be considered limiting of its scope, for the disclosure may admit to other equally effective embodiments.

[0016] FIG. 1 is a diagram illustrating a general design of a subsea winch, according to one or more examples of the disclosure.ATTORNEY DOCKET IS24.0984

[0017] FIGS. 2A, 2B and 2C are diagrams illustrating an embodiment of the present subsea winch, according to one or more examples of the disclosure.

[0018] FIGS. 3A, 3B and 3C are diagrams illustrating another embodiment of the present subsea winch, according to one or more examples of the disclosure.

[0019] FIG. 4A and 4B are diagrams illustrating an embodiment of the horizontal subsea winch system.

[0020] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures (“FIGS”). It is contemplated that elements disclosed in one embodiment may be beneficially utilized on other embodiments without specific recitation.DETAILED DESCRIPTION

[0021] In the following, reference is made to embodiments of the disclosure. It should be understood; however, that the disclosure is not limited to specific described embodiments. Instead, any combination of the following features and elements, whether related to different embodiments or not, is contemplated to implement and practice the disclosure. Furthermore, although embodiments of the disclosure may achieve advantages over other possible solutions and / or over the prior art, whether or not a particular advantage is achieved by a given embodiment is not limiting of the disclosure. Thus, the following aspects, features, embodiments, and advantages are merely illustrative and are not considered elements or limitations of the claims except where explicitly recited in a claim. Likewise, reference to “the disclosure” shall not be construed as a generalization of inventive subject matter disclosed herein and should not be considered to be an element or limitation of the claims except where explicitly recited in a claim.

[0022] Although the terms first, second, third, etc., may be used herein to describeATTORNEY DOCKET IS24.0984 various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be only used to distinguish one element, components, region, layer or section from another region, layer, or section. Terms such as “first”, “second”, and other numerical terms, when used herein, do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer, or section discussed herein could be termed a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0023] When an element or layer is referred to as being “on”, “engaged to”, “connected to”, or “coupled to” another element or layer, it may be directly on, engaged, connected, coupled to the other element or layer, or interleaving elements or layers may be present. In contrast, when an element is referred to as being “directly on”, “directly engaged to”, “directly connected to”, or “directly coupled to” another element or layer, there may be no interleaving elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed terms.

[0024] Some embodiments will now be described with reference to the figures. Like elements in the various figures will be referenced with like numbers for consistency. In the following description, numerous details are set forth to provide an understanding of various embodiments and / or features. It will be understood; however, by those skilled in the art, that some embodiments may be practiced without many of these details, and that numerous variations or modifications from the described embodiments are possible. As used herein, the terms “above” and “below”, “up” and “down”, “upper” and “lower”, “upwardly” and “downwardly”, and other like terms indicating relative positions above or below a given point are used in this description to more clearly describe certain embodiments.

[0025] The present design discloses a subsea winch that includes an outer housing that encases the winch, spooling, motor drive system, and supporting members to protect it from seawater conditions. This design enables the conveyance winch to be mountedATTORNEY DOCKET IS24.0984 subsea and reduce the cost of offshore well intervention. The general structure of the present design is illustrated in FIG. 1. For definitional purposes, a winch is defined as a rotating drum type assembly that includes a cable. The winch may be comprised of the support structure that holds the rotating drum type assembly or spooling assembly that can gather or let out the cable.

[0026] In general, the present design provides for the following features and advantages: a. Wireline or Slickline winch in vertical orientation to more efficiently use subsea space on subsea structure, i.e. minimize length (L) x width (W) footprint. b. A winch vessel is provided. The winch vessel compensates pressure with the well conditions to reduce the pressure differential sealing element for the cable. Such a configuration is particularly beneficial for deeper subsea operations. The winch vessel protects the equipment and materials contained therein that could be damaged by seawater and debris. c. In embodiments, the winch vessel is configured with internal pressure higher than subsea pressure to reduce differential pressure on cable sealing elements. Such reduction of differential pressure on cable sealing elements prevents pressure intrusion and premature wear. d. In embodiments, the winch vessel is configured with an internal pressure equal to subsea pressure to control the fluid around the rotating equipment. e. In embodiments, the vessel container is configured such that the container protects winch and drive assemblies from seawater and debris. f. In some embodiments, a control system is provided that controls the winch motor, gearbox, and spooling motor, as well a gearbox to autonomously spool the cable for various speeds. This control system can enable autonomous action and provide more efficient intervention operations. g. In some embodiments, a cable odometer is provided that measures cable travel to identify any slippage or difference in expected cable position. h. In further embodiments, a camera or optical sensor is provided to monitor cable spooling.ATTORNEY DOCKET IS24.0984 i. In some embodiments, an encased motor and gearbox with compensation system is provided. In these embodiments a bladder or piston with spring is used to control fluid inside housing. j. In further embodiments, a frame structure is provided that allows for radial alignment and assembly of system components and provides axial and radial support for components to resist cable forces.

[0027] In one embodiment of the present disclosure, designated (A), an encased subsea winch with a smaller diameter (less than 45 inches) is introduced, as shown in FIG. 2. The winch is minimal in diameter to reduce the overall outer housing diameter so the winch can withstand subsea pressure differential when connected to well pressure. This design equalizes pressure inside the winch vessel / outer housing with the well to increase the cable sealing reliability and reduce cable friction. The spooling is accomplished by translating the winch up and down so the cable has a single exit from the vessel. This enables the use of one sealed cable exit point thereby allowing improved sealing around the cable.

[0028] In another embodiment of the present design, which is identified as design (B), a subsea winch assembly, whereby the winch and spooling are both encased is introduced, which is seen in FIG. 3. In design (B), the subsea winch has a larger vessel / outer housing to accommodate the spooling mechanism. Moreover, due to the larger vessel size, the hydraulic pressure within the vessel will need to be equalized by means of filling.

[0029] Referring to FIG. 1 , a more detailed view of the subsea winch assembly 100 is illustrated. The subsea winch assembly 100 has a motor 102 that provides rotary motion to a spool 124. The spool 124, in the illustrated drawing, provides a surface or axis 130 upon which a cable may be wound. Lateral retention of the cable may be maintained by a first end 126 and a second end 128 of the spool 124. Mechanical advantage for rotation of the spool 124 may be achieved through a gearbox 104 receiving rotary motion from the motor 102.ATTORNEY DOCKET IS24.0984

[0030] In embodiments, the motor 102 may be a sealed unit such that in the event of water intrusion within a container or vessel 134 housing the components listed, the motor 102 will still operate. Electrical power may be provided to the motor 102 through a power and control cable 108. The power and control cable 108 may be configured as a single unit or may be separate cables. In embodiments, control of the motor 102 may be maintained through a computing apparatus (not shown) that provides control signals to the motor 102. In embodiments, the motor 102 may be equipped with a receiver / controller configured to accept control signals from the computing apparatus to reel in or spool out cable.

[0031] In embodiments, a compensator 106 is connected to the motor 102 to allow for movement compensation on the winch assembly 100. The compensator 106 may be configured to maintain a taught cable configuration to allow for proper spooling and unreeling of the cable on to the axis 130 of the spool 124. In some embodiments, the compensator 106 and gearbox 104 may be configured to allow for small adjustments of movement of the cable from the spool 124. Such small adjustments may allow for fine movements needed to accurately position the cable to a desired location. Fine motor adjustments may be provided automatically by sensors connected to the cable or associated equipment attached to the subsea winch assembly 100. As illustrated, the axis 130 of the spool 124 is provided rotation through incorporation of a bearing 112. The bearing 112 may be a sealed type bearing to allow for elimination of contamination during operation. Support for the spool 124 and other components is achieved through a frame 110. In embodiments, the frame 110 is made of stainless steel to allow for rigidity of the frame during different spooling and unspooling activities.

[0032] In embodiments, the subsea winch assembly 100 may be equipped with cameras and lighting systems to allow for visual recognition and identification during subsea operations. In some embodiments, the computing apparatus (not shown) may have access to data from previous projects or data related to the location. Such data may be used by the computing apparatus to automate systems to allow operators freedom to perform other tasks. The computing apparatus may also have access to data related toATTORNEY DOCKET IS24.0984 fault conditions that have occurred previously and avoid similar operating parameters to prevent interruption of operations.

[0033] The data provided for use by the subsea winch assembly 100 may be located aboard a ship, rig platform or other structure. The data may also be transmitted to the immediate locality from a centralized operational service center that houses databases for hydrocarbon recovery operations.

[0034] In some embodiments, multiple subsea winch assemblies 100 may be used for operations in combination. In such contemplated activities, a single control room may be used to accurately position needed equipment with multiple subsea winch assemblies 100. Monitoring of field activities and subsea winch assembly 100 health statistics may be performed. In embodiments, maintenance records for the subsea winch assembly may be recorded and processed allowing for notification to operators that maintenance may be required for an assembly 100. As a non-limiting example, it may be found that after 500 hours of use, a subsea winch assembly 100 may be required to be examined by a maintenance professional for bearing 112 inspection. It may be identified through maintenance records, for example, that after 500 hours of use, bearing failures start to increase; therefore, to attain high levels or readiness of a winch assembly, maintenance or inspection is required. This system also allows remote operational control of the subsea winch and wireline service.

[0035] In embodiments, a visual system 132 is provided within the vessel 124 to allow for operators to directly view the spooling of the cable onto the spool 124. In these embodiments, the visual system 132 is collocated with the axis by which the cable is placed upon the spool 124.

[0036] A screw drive 114 is provided with a second motor 118. The screw drive 114 is rotated around an axis through rotary motion of a second motor 118. The second motor 118 is supported by the frame 110. Power and control operations are provided through controls 116. In some embodiments, a second gearbox may be provided if mechanical advantage is necessary to minimize forces on the second motor 118. The screw driveATTORNEY DOCKET IS24.0984114 allows for translation of the cable down the axis 130 of the spool 124. The screw drive 114 is calibrated to allow for gripping of the cable and precise spooling of the cable. During translation of the cable up and down the spool 124, visual identification is maintained through the visual system 132 to prevent kinking, cable overlap or binding. A wheel track 124 is provided to allow the cable to be accurately distributed over the spool 124. As will be understood, the wheel track 122 may be extended throughout the depth of the axis 130 of the spool 124 to allow for provision of cable along the entire spool 124. The wheel track 122 also allows for controlling a direct horizontal placement of the cable onto the spool 124. In embodiments, the spooling screw can also be mechanically linked to the drum rotation, removing the need for a second motor and controls.

[0037] In embodiments, the amount of cable processed through the subsea winch assembly 100 may be measured by a cable odometer 120. The cable odometer 120 may be arranged such that an electronic signal is produced by the odometer that can be read by an operator at a remote location.

[0038] Referring to FIGS. 2A, 2B and 2C, another embodiment of a subsea winch 200 is illustrated. In this embodiment, the overall diameter of the winch is less than 45 inches. This allows for more compact placement opportunities for the subsea winch 200. In this embodiment, the winch drum assembly 202 is allowed to rotate around a rod 214, thus spooling the cable 208 that is distributed from a sheave assembly 206. To accomplish even spooling of the cable 208 on to the winch drum assembly 202, the winch drum 202 is provided rotary motion by a motor assembly 212 and end cap assembly 218. A radial bearing 216 is provided to reduce friction during rotary motion As will be understood, more or less sheaves may be incorporated into the sheave assembly 206.

[0039] The amount of force needed to be lifted by the subsea winch 200 may vary. Accordingly, it is advantageous to include a system to provide greater or lesser amounts of mechanical advantage during operation. A gearbox assembly 210 is provided to accomplish this task. Shifting of the gearbox assembly 210 may be done on a mechanical or electrical (sensor) actuation. For example, it may be determined that if a draw rate of over a prescribed amount is reached, a different gear selection is needed. A sensorATTORNEY DOCKET IS24.0984 placed on the subsea winch 200 may monitor such operational speeds and transition the gearbox assembly 210 from a first state to a second state upon reaching such a predefined operational speed.

[0040] In addition to operational speeds, switching of the gearbox assembly 210 from a first state to a second state may be accomplished by a load meter on the cable 208. Once a specific load has been achieved, the gearbox 210 may be shifted to a second operational state thus providing a necessary mechanical advantage. As will be understood, several different states may be achieved with several gearing ratios for the gearbox assembly 210.

[0041] In this embodiment, the winch drum assembly 202 is configured to translate up and down the axis 204 to allow for a consistent placement of the cable 208 onto the winch drum assembly 202. The translation of the winch drum assembly 202 up and down the axis 204 is kept at a consistent rate so that overlapping of the cable 208 does not occur at the center portions of the winch drum assembly 202. As will be understood, the winch drum 202 along with the other components, except for the spooled cable 208 may be housed in a housing or vessel 275. This vessel 275 may allow for water tightness of the systems enclosed. A packing arrangement may be used at the point of entry / exit of the cable 208 from the vessel to minimize water intrusion. Although not shown, an arrangement may also be incorporated into the vessel such that if water intrusion does occur, the water may be accumulated into a predefined area within the vessel. An optional purge system may then be used to eject any accumulated water from the vessel to ensure that the contents within the vessel are maintained in a dry condition.

[0042] In other embodiments, sensors may be placed on the subsea winch 200 to identify various functions and operations of the systems involved. Sensors may be included to determine spool rate, cable tension, operating hours, operation hours until next service / maintenance procedure, lubrication levels, and on-board electricity / battery levels for subsea winches 200 that require stand alone electrical capacity.ATTORNEY DOCKET IS24.0984

[0043] In still further embodiments, sensors may include capabilities for extremely slow draw rates both up and down (inching) to allow for precise placement of objects. Further sensors may include water accumulation sensors in areas designed to capture intruded water within the vessel. In still further embodiments, measurements for temperature and pressure may be included both inside and outside the vessel to identify ambience and working conditions for the equipment.

[0044] In still further embodiments, velocity readings may be obtained for the outside fluid streams to identify the amount of drag that may occur in swift running fluid streams, thus preventing overload conditions. In still further embodiments, overload circuitry may be incorporated to prevent overload of the subsea winch 200 in the case of a stuck hoisted component.

[0045] In still further embodiments, a computing arrangement may be included to perform automated sequences, if necessary. This may include repetitive tasks or frequently performed tasks. Such automated activities can then reduce operator interaction to perform other needed tasks during the repetitive task. When a measurement of any of the sensor systems exceeds a predefined threshold, a warning may be provided to the operator to alert the operator of needed attention.

[0046] In further embodiments, a data recorder may be provided to store warning and operational data for future analysis if necessary. The data recorder may include a nonvolatile memory system, such as, but not limited to, a computer hard drive, a universal serial bus device, a solid-state storage device or other recording medium.

[0047] FIG. 2B illustrates an exploded view of the top portion of the subsea winch 200. FIG. 2B illustrates the configuration of the end cap assembly 218 securing the motor assembly 212. The motor assembly 212 is, in turn, connected to the gearbox assembly 210

[0048] Referring to FIG. 2C, an exploded view of the placement of the cable 208 is shown in connection with the sheeve arrangement 206. Although illustrated as a singleATTORNEY DOCKET IS24.0984 sheave, multiple sheaves may be used in an arrangement to gain mechanical advantage if necessary. During rotation of the winch drum assembly 202 by the associated end cap assembly 218 and motor assembly 212 around the axis 204, the cable 208 is spooled onto the winch drum assembly 202. The process may be reversed wherein the motor assembly 212 is actuated and the cable 208 is removed from the winch drum assembly 202

[0049] In embodiments, cap ends 250 of the vessel 275 may be welded to remaining portions of the pressure vessel 275 to provide a leak tight fit. End cap assemblies 218 may be connected to the cap ends 250 to allow for transfer of torque from the motor assembly 212 to the winch drum assembly 202.

[0050] Referring to FIGS. 3A, 3B and 3C, another example embodiment of subsea winch 300 is illustrated. Referring to FIG. 3B, a side or longitudinal view of the winch 300 is illustrated. In the illustrated embodiment, sizes larger than 45 inches are contemplated. As the subsea winch 300 is larger in size, support arrangement 304 are used to hold end caps 306 in place. The support arrangement 304 provide significantly more structural support and thus larger pressures may be exerted on the winch 300. As illustrated, a packoff 302 is provided such that the cable 308 running to the outside of the vessel is retained in a water-tight configuration. As before, a sheave 310 is provided to help position the cable 308 onto the drum 320. The sheave arrangement 310 may index back and forth across the drum, thereby distributing the cable along the drum 320. Indexing may be performed by a supported motor 322 and a threaded rod or roller screw 324. Edge stiffeners 312 may be provided as a connection point between the end cap 306 and the support arrangement 304 to allow for a more rigid connection.

[0051] FIG. 3A illustrates a top view of the winch 300. In this illustration, it can be seen that a filler material 340 may encase the cable 308, thereby reducing available hydraulic volume to help underwater buoyancy. FIG. 3C illustrates an exploded view of the components of the winch 300 of FIG. 3B. The embodiment illustrated in FIG. 3 allows the vessel 330 to be upsized if needed to accommodate larger sheaves 310 or sheave arrangement and cables 308 as well as motors 322.ATTORNEY DOCKET IS24.0984

[0052] As illustrated, the aspects of the disclosure provide for a subsea winch system that may be easily repaired by field personnel as well as transported to the physical location for service. In some embodiments, the winch may be relatively small in size, allowing for compact operations. In other embodiments, such as illustrated in FIG. 3A, 3B and 3C, a larger and more robust winch 300 is provided.

[0053] Aspects of the disclosure further provide a subsea winch system that interacts with existing component systems used in hydrocarbon recover projects. The embodiments illustrated in FIGS. 1 , 2 and 3, do not need excessive operational training in order to perform operations. Standard size cables and overall maintenance practices may be used.

[0054] Aspects of the disclosure provide a subsea winch that is more economical to use than conventional winches. As versions of the disclosure present compact devices, such devices may be more efficiently used in embodiments not requiring excessive lifting or movement capability. In other instances, where more robust forces are necessary, larger size units, such as illustrated in FIG. 3A, 3B and 3C may be used.

[0055] As will be understood, although the are size differences between FIGS. 2A, 2B, 2C and 3A, 3B, 3C, systems may share common components to allow for greater economy. Basic functions may remain the same, such as electronic monitoring systems for overload protection, tensile strength supported, draw rates and maintenance indicators may be shared between the different sizes available. In addition to the above, different pack-off devices may be implemented with each size version shown, thereby extending the flexibility of the overall system.

[0056] Referring to FIGS. 4A and 4B, a horizontal winch system is provided as another embodiment. The horizontal winch system 400. The horizontal winch system 400, in nonlimiting embodiments, may have a drum arrangement 402 that is used to spool a cable or wireline 404 for use during intervention activities. The wireline 404 may be fed through an axis of the horizontal winch system 400 and connected to the drum arrangement 402.ATTORNEY DOCKET IS24.0984The drum arrangement 402 may rotate around a horizontal axle that houses a shaft arrangement 408. The shaft arrangement 408 is configured to interface with an axel arrangement 406. In this embodiment illustrated, the shaft arrangement 408 is a hollow shaft. A frameless motor arrangement 424 is used to provide motion to the horizontal winch system 400. The frameless motor arrangement 424 is configured to provide motion to a hollow motor shaft arrangement 416. A motor shaft 416, in the illustrated embodiment a hollow motor shaft, connects with the shaft 408 to transfer mechanical motion. The hollow motor shaft 416 is configured around a hollow shaft arrangement 418. A brake arrangement 422 is provided to allow for stoppage of the frameless motor arrangement 424. A gearbox arrangement 414 is provided to allow for mechanical advantages of the frameless motor arrangement 424. A flange arrangement 410 and ball joint 412 are provided at one end of the horizontal winch system 400 to allow fixation of the drum arrangement spool portions to the drum arrangement flange sections. In embodiments, the gear box arrangement 414 is configured with an ability to shift gears to meet high speed and / or high load scenarios. In further embodiments, controls for the system 400 may be configured such that a remotely operated vehicle may be used to manually control the system 400. In some embodiments, the support system for the horizontal winch system 400 is configured to minimize the overall footprint and help alignment of components. Embodiments may be provided with the ability to use a cable slip ring. As with the other embodiments, overload protection may be provided so that overload is precluded during operation. Many different mechanisms may be used for such overload protection including stress monitors on the wireline or measuring shaft deflection while under load. Fault tolerance may be provided through a mechanically linked spooling system. For ease of maintenance and longevity, lubrication systems may be provided with seals, such as metallic dynamic seals to protect components from seawater.

[0057] Embodiments disclosed throughout the specification may also use the same controllers between different sizes, thus allowing operators to be able to choose between which size for use at the job site. Such flexibility allows for the correct device to be chosen for the correct environment without having to recalibrate monitoring equipment. Each of the embodiments illustrated may use or incorporate a bladder system. The bladder system may be used to help in buoyancy of the winch. Bladder systems may useATTORNEY DOCKET IS24.0984 compressed air that may be regulated by an operator. In embodiments, different pressures may be maintained within the respective vessel areas, thus different sealing systems may be used within the vessels. These sealing mechanisms may isolate different functions, such as monitoring or sensing systems, motor areas and drum areas as nonlimiting embodiments.

[0058] In embodiments using automated functions, machine learning and / or artificial intelligence programming may be used. Such embodiments may change programming by altering the programming based upon instructions provided. As such, in one nonlimiting embodiment, different nodal layers of evaluation may be provided for analysis. The different nodal layers provided may incorporate modification techniques to allow for accurate reading and evaluation of large datasets. The large datasets may be designated training datasets or may be actual data that is desired to be evaluated. Coefficients used for corresponding different nodal layers may be developed within the methods described or may be pre-set according to training. Such coefficients may be altered by the computer programming itself or may be designated by a computer user. As a non-limiting embodiment, if possible results from analysis disclose too many potential outcomes or results, a computer operator may be asked or may alter the analysis protocol to achieve more focused results.

[0059] In embodiments, computer code may be any programming code that lists instructions to be followed. Programming codes may include instructions provided by a computer programmer with or without assistance by computers. Programming may occur through use of a library of programs or subroutines to section programming tasks. Programming may be accomplished to run on different operating systems or may be included with internal executable files for stand-alone computer instructions.

[0060] Aspects of the claims shall next be recited. These aspects discussed should not be considered limiting of the disclosure. In one example embodiment, a subsea winch assembly is disclosed. The subsea winch assembly may comprise a winch with an incorporated spooling device attached to the winch. The subsea winch assembly may also comprise one or more motor drive systems attached to the winch and the spoolingATTORNEY DOCKET IS24.0984 device. The subsea winch assembly may also comprise an outer housing configured with an internal volume, the outer housing encasing the winch and the one or more motor drive systems. The subsea winch assembly may also comprise a bladder system located inside the outer housing.

[0061] In another example embodiment, the subsea winch assembly may be configured wherein the spooling device is located outside of the outer housing.

[0062] In another example embodiment, the subsea winch assembly may be configured wherein the outer housing comprises more than one sealing mechanism.

[0063] In another example embodiment, the subsea winch assembly may be configured wherein the outer housing is less than 45 inches in diameter.

[0064] In another example embodiment, the subsea winch assembly may be configured wherein the bladder system comprises a biasing mechanism.

[0065] In another example embodiment, the subsea winch assembly may further comprise a cable odometer that measures cable travel to identify any slippage or difference in expected cable position.

[0066] In another example embodiment, the subsea winch assembly may further comprise a camera positioned within the outer housing configured to monitor cable spooling.

[0067] In one example embodiment a subsea winch assembly is disclosed. The subsea winch assembly may comprise a winch and a spooling device attached to the winch. The subsea winch assembly may also comprise one or more motor drive systems attached to the winch and the spooling device. The subsea winch assembly may also comprise an outer housing configured with an internal volume, the outer housing encasing the winch, the spooling device, and the one or more motor drives. The subsea winch assembly may also comprise a bladder system located inside the outer housing.ATTORNEY DOCKET IS24.0984

[0068] In another example embodiment, the subsea winch assembly may be configured wherein the outer housing comprises more than one sealing mechanism.

[0069] In another example embodiment, the subsea winch assembly may be configured wherein the outer housing is more than 45 inches in diameter.

[0070] In another example embodiment, the subsea winch assembly may be configured wherein the bladder system comprises a biasing mechanism.

[0071] In another example embodiment, the subsea winch assembly may further comprise a cable odometer that measures cable travel to identify any slippage or difference in expected cable position.

[0072] In another example embodiment, the subsea winch assembly may further comprise a camera positioned within the outer housing configured to monitor cable spooling.

[0073] In another example embodiment, a subsea winch assembly is disclosed. The winch assembly may comprise a winch vessel defining an interior volume and a winch placed within the interior volume. The subsea winch assembly may further comprise a frame structure placed within the interior volume. The subsea winch assembly may further comprise a spooling device attached to the winch and the frame structure. The subsea winch assembly may further comprise one or more motor drive systems attached to the winch, the frame structure and the spooling device. The subsea winch assembly may further comprise an outer housing configured with an internal volume, the outer housing encasing the winch and the one or more motor drive systems and a bladder system located inside the outer housing.

[0074] In another example embodiment, the subsea winch assembly may be configured wherein the outer housing has at least two sealing mechanisms.ATTORNEY DOCKET IS24.0984

[0075] In another example embodiment, the subsea winch assembly may be configured wherein at least of the two sealing mechanisms creates different pressures within the winch vessel.

[0076] In another example embodiment, the subsea winch assembly may be configured wherein the winch vessel is configured with a single entry and exit arrangement for spooling of a cable.

[0077] In another example embodiment, the subsea winch assembly may be configured wherein the bladder system further comprises a biasing mechanism.

[0078] In another example embodiment, the subsea winch assembly may further comprise a cable odometer configured to measure a position.

[0079] In another example embodiment, the subsea winch assembly may further comprise a camera positioned within the outer housing, the camera configured to view operation of the winch placed within the interior volume.

[0080] In another example, a horizontal subsea winch assembly is disclosed. The horizontal subsea winch assembly comprises a drum assembly with an axle and a flange, the drum assembly having an open axial portion. The horizontal subsea winch assembly further comprises a first hollow shaft arrangement placed within the open axial portion of the drum assembly, the first hollow shaft arrangement having a first end and a second end. The horizontal subsea winch assembly further comprises a motor arrangement connected to the drum assembly wherein the motor arrangement houses a hollow motor shaft arrangement and a second hollow shaft arrangement that connects to the first hollow shaft arrangement, wherein the hollow motor shaft arrangement is positioned around a circumference of the second hollow shaft arrangement. The horizontal subsea winch assembly further comprises a gearbox connected to the motor arrangement and a brake system.ATTORNEY DOCKET IS24.0984

[0081] The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

[0082] While embodiments have been described herein, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments are envisioned that do not depart from the inventive scope. Accordingly, the scope of the present claims or any subsequent claims shall not be unduly limited by the description of the embodiments described herein.

[0083] The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the disclosure. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the systems and methods described herein. The foregoing descriptions of specific examples are presented for purposes of illustration and description. They are not intended to be exhaustive of or to limit this disclosure to the precise forms described. Obviously, many modifications and variations are possible in view of the above teachings. The examples are shown and described in order to best explain the principles of this disclosure and practical applications, to thereby enable others skilled in the art to best utilize this disclosure and various examples with various modifications as are suited to the particular use contemplated. It is intended that the scope of this disclosure be defined by the claims and their equivalents below.

Claims

ATTORNEY DOCKET IS24.0984CLAIMSWhat is claimed is:1 . A subsea winch assembly comprising: a winch configured with a spooling device attached to the winch; one or more motor drive systems attached to the winch and the spooling device; an outer housing configured with an internal volume, the outer housing encasing the winch and the one or more motor drive systems; and a bladder system located inside the outer housing.

2. The subsea winch assembly of claim 1 , wherein the spooling device is located outside of the outer housing.

3. The subsea winch assembly of claim 1 , wherein the outer housing comprises more than one sealing mechanism.

4. The subsea winch assembly of claim 1 , wherein the outer housing is less than 45 inches in diameter.

5. The subsea winch assembly of claim 1 , wherein the bladder system comprises a biasing mechanism.

6. The subsea winch assembly of claim 1 further comprising: a cable odometer that measures cable travel to identify any slippage or difference in expected cable position.

7. The subsea winch assembly of claim 1 , further comprising:ATTORNEY DOCKET IS24.0984 a camera positioned within the outer housing configured to monitor cable spooling.

8. A subsea winch assembly comprising; a winch with a spooling device attached to the winch; one or more motor drive systems attached to the winch and the spooling device; an outer housing configured with an internal volume, the outer housing encasing the winch, the spooling device, and the one or more motor drives; and a bladder system located inside the outer housing.

9. The subsea winch assembly of claim 6, wherein the outer housing comprises more than one sealing mechanism.

10. The subsea winch assembly of claim 6, wherein the outer housing is more than 45 inches in diameter.11 . The subsea winch assembly of claim 6, wherein the bladder system comprises a biasing mechanism.

12. The subsea winch assembly of claim 1 further comprising: a cable odometer that measures cable travel to identify any slippage or difference in expected cable position.

13. The subsea winch assembly of claim 1 , further comprising: a camera positioned within the outer housing configured to monitor cable spooling.ATTORNEY DOCKET IS24.098414. A subsea winch assembly comprising: a winch vessel defining an interior volume; a winch with a spooling device placed within the interior volume; a support arrangement placed within the interior volume and attached to the winch; one or more motor drive systems attached to the winch, the frame structure and the spooling device; an outer housing configured with an internal volume, the outer housing encasing the winch and the one or more motor drive systems; and a bladder system located inside the outer housing.

15. The subsea winch assembly of claim 1 , wherein the outer housing has at least two sealing mechanisms.

16. The subsea winch assembly of claim 15, wherein at least of the two sealing mechanisms creates different pressures within the winch vessel.

17. The subsea winch assembly of claim 14, wherein the winch vessel is configured with a single entry and exit arrangement for spooling of a cable.

18. The subsea winch assembly of claim 14, wherein the bladder system further comprising a biasing mechanism.

19. The subsea winch assembly of claim 14, further comprising: a cable odometer configured to measure a position.

20. The subsea winch assembly of claim 14, further comprising: a camera positioned within the outer housing, the camera configured to view operation of the winch placed within the interior volume.

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