RU2747284C2 - Systems and methods for installing a maximum range anchor in a wellbore - Google Patents

Abstract

FIELD: oil and gas production.SUBSTANCE: group of inventions relates to the device, systems and methods of installing an anchor in the wellbore for accurate positioning of downhole tools. The system for ensuring the installation of a multiple use self-centering anchor in a wellbore includes an anchor of the maximum range of action. The anchor contains the first retractable assembly designed to engage the wellbore. The first retractable unit contains a first set of levers connected to the first yoke, a second set of levers connected to the second clamp, and multiple bedplates. Each bedplate out of multiple bedplates is connected on the first side to the first set of levers and connected on the second side to the second set of levers. Each bedplate contains a retainer connected radially to the outer surface and designed for reliable engagement with the wellbore. The tightener rod is rigidly connected to the first clamp and is slidably connected with the second clamp. The forced thrust in the axial direction reduces the distance between the first clamp and the second clamp and forces the first and second sets of levers to move the set of bedplates radially towards the wellbore. A method for performing work in the face zone of the wellbore and a system for reliable engagement with the wellbore are claimed.EFFECT: technical result is achieved of improving the efficiency and accuracy of downhole tool placement in the wellbore.20 cl, 8 dwg

Description

LINK TO RELATED APPLICATIONS

[01] This application is a Patent Cooperation Treaty (PCT) application that claims the priority of US Patent Application 15/340835, entitled `` Systems And Methods For Setting An Extreme-Range Anchor Within A Wellbore, '' filed November 2, 2016, which is a partial sequel claiming priority from U.S. Patent Application No. 14 / 143,534, entitled "Tool Positioning And Latching System," filed December 30, 2013, U.S. Patent Application No. 14 / 727,609, entitled "Anchor System For Pipe Cutting Apparatus," filed June 1, 2015 ., US patent application 13/507732, entitled "Permanent Or Removable Positioning Apparatus And Method For Downhole Tool Operations", filed July 24, 2012, and US patent application 14 / 930,369, entitled "Setting Tool For Downhole Applications", filed 2 November 2015, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD OF THE INVENTION

[02] Embodiments applicable within the scope of the present invention relate generally to apparatus, systems and methods for installing an anchor in a wellbore, and more particularly to apparatus, systems, and methods applicable to accurately positioning, and actuating cutters, gas cutters, perforators, installation tools and / or other types of tools used in the bottom hole of the well.

LEVEL OF TECHNOLOGY

[03] Many downhole operations require tool anchoring at the bottom and in the wellbore. Such downhole tools include, for example, welding torches, rock drills, landing tools, hydraulic fracturing equipment, and the like. (collectively referred to herein as downhole tools).

[04] The oil and gas industry requires the ability to anchor, directionally synchronize, and then release the adapter or tool string to provide accurate and efficient performance of the tool system. Providing accurate placement of: force, torque, transducer, perforation or notch, and exit for drilling or other downhole operation, at the optimum position, further reduces the requirement for repositioning with multiple runs of tools and tooling methods of the same placement. while minimizing the chances of deploying tools with incorrect guidance and deployment in an inoperative position.

[05] Some existing systems of tools deployed in the wellbore are designed with control lines surrounding the periphery of the pipe or tubing string. Removing a pipe requires cutting off both, the pipe at the target location and the control line or lines. Without cutting both, operators cannot perform the required finishing work. Cutting operations with sufficient power to cut all elements are, however, limited in use due to the risk of damage to the annulus infrastructure. Thus, the ability to perform multiple, accurate cuts on the plane of a single target can cut all elements. There is a need to locate tools that provide a precise supply of energy for cutting efficiency.

[06] For precision positioning of an instrument, it is advantageous to mount the anchor or anchoring system in one position so that multiple instruments can be locked into such an anchor or anchoring system to accurately position and position each instrument. When the anchor is located in the bottom hole of the well, the tool cannot rely on measurement or synchronization from the surface. Alternatively, anchoring systems are required to position and reposition one or more downhole tools and to orient or synchronize the tool downhole. Downhole tool synchronization enables the downhole tool to perform future work at the same location in the wellbore or offset. The offset can include an angular offset (e.g., azimuthal, radial, polar, etc.) of the tool, or a positional offset of the location of the downhole tool (e.g., downward or upward in the wellbore from a previous location in the wellbore where previous jobs were performed. ).

[07] When screwed together and secured with the proper torque applied, the joints between the pipes in the tubular string become relatively seamless, and the lack of discernible features makes it difficult to locate the joints using conventional downhole logging tools. While casing collar locators and similar devices can assist in positioning the tool in tubing, existing devices have limited accuracy, which can generally be in the range of several feet (ft = 305mm) at best. A tubing joint target can be in lengths measured in inches (in = 25mm), which requires a much more accurate tool positioning than today's collar locators and similar devices can provide.

[08] Completions taking place in the wellbore often require the installation of sensors, perforating the wall for communication, and perforating the casing to establish contact with the geologic structures. Jobs such as metering, grouting, hydraulic fracturing, and hydraulic drilling become downstream processes.

[09] Other positioning systems may include providing physical elements in the interior of the tubing string that interact with corresponding physical elements of the positioning tool; however, these positioning systems require numerous, precision-made elements to ensure proper functioning and interaction, containing various moving parts to ensure selective interaction between the corresponding elements.

[10] There is a need for a detachable positioning device and tool positioning methods capable of complementary docking with integration in a tubular string to provide precise positioning of anchored tools at a predetermined location containing joints in a tubular string to facilitate tooling efficiency. Having the flexibility of the selectively positioned locking element in the tubular greatly improves the tool's ability to firmly anchor the tool using pre-installed anchoring profile mechanisms in the wellbore system.

[11] In addition, there is a need for a positioning device and methods applicable to positioning a tool in a tubular string, simple in design and operation, capable of being part of a reusable part, amenable to machining and re-machining, capable of adapting to different retention orientations and / or interactions.

[12] There is also a need for a positioning device and methods useful for positioning a tool in a tubing string, run and deploy using readily available setting tools.

[13] The presented embodiments satisfy these requirements.

DISCLOSURE OF THE INVENTION

[14] Embodiments of the present invention include apparatus, systems, and methods useful for accurately setting, positioning, and activating packers, cutters, welding torches, rock drills, setting tools, and / or other types of tools used in the downhole ...

[15] The described embodiments include a system for facilitating the installation of a reusable self-centering anchor in a wellbore. The system includes a range limit anchor having a first retractable assembly configured to engage a wellbore. The first retractable assembly may comprise a first plurality of arms that can be coupled to the first yoke, a second plurality of arms that can be coupled to the second yoke, and a plurality of base plates. Each base plate in the plurality of base plates may be connected on a first side to a first plurality of arms and may be connected on a second side to a second plurality of arms. Each base plate may include a latch that may be connected to a radially outer surface and configured to securely engage the wellbore. The range anchor may include a rod that can be rigidly coupled to the first yoke and slidably coupled to the second yoke. Forcing thrust in the axial direction can shorten the distance between the first yoke and the second yoke and can cause the plurality of base plates to move radially toward the wellbore.

[16] In some embodiments, the system may include a second retractable assembly configured to engage a wellbore. The second retractable assembly may include a third plurality of arms coupled to the second yoke, a fourth set of arms coupled to the third yoke, and a second plurality of base plates. Each base plate in the second plurality of base plates may be coupled on the first side of the third plurality of arms and coupled on the second side with the fourth plurality of arms.

[17] In some embodiments, the implementation of the system may include a housing and a hitch lock. The hitch lock may be configured to engage with the housing to maintain the axial position of the linkage relative to the housing when the linkage is forced axially. In some embodiments, the implementation of the hitch lock may be configured to disengage in the housing in response to the application of a threshold trip force to the housing in the axial direction.

[18] In some embodiments, the plurality of base plates are movable up to fifteen (15) centimeters radially to engage a wellbore. In some embodiments, the retainers may be tapered retainers, semi-conical retainers, serrated retainers, or other retainers to securely engage the wellbore. In some embodiments, the first retractable assembly may include a thrust spring, securing pins, securing belts, or other securing devices to prevent radial movement of a plurality of base plates prior to being forced to be thrust.

[19] In some embodiments, the system may include retainer covers configured to overlap the retainers. The retainer caps can prevent interaction between the retainers and the wellbore when the range anchor is deployed to a certain depth in the wellbore. In some embodiments, the range anchor may include a positioning bar configured to be coupled to a pull rod at a first end and a positioning tool at a second end. The setting tool can pull the setting rod to force thrust in the axial direction. In some embodiments, the key may be configured to shear the locating rod from the rod when it is pulled by a predetermined force.

[20] Described embodiments may include a method of performing work in the bottom hole of a wellbore. The method may include lowering a range anchor into a wellbore, wherein the range anchor may include a tool coupling. The method may include actuating an axial thrust setting tool to extend the plurality of base plates radially. The base plates can be made with the possibility of reliable engagement of the wellbore with clamps connected to the radially outer surface of the base plates. The method may further include lowering the first tool onto the tool connection head, performing the first work with the first tool, retrieving the first tool to the surface from the wellbore, lowering the second tool onto the tool connection head, performing the second work with the second tool on the second place, and retrieve the second tool to the surface from the wellbore.

[21] The method of the described embodiments may also include the steps of pulling the tool coupling axially to disengage the plurality of base plates from the wellbore. The step in which the first job, the second job, or combinations thereof is performed, may include operating an axial torch, radial torch, rock drill, production tubing cutter, or a combination thereof. Also, actuation of the setting tool may result in shearing of the setting rod from the link. Shearing can be performed when a plurality of base plates are engaged with the wellbore. In some embodiments of the described methods, the first job may be performed at the target location and the second job may be performed three (3) centimeters (1.18 inches) or less than three (3) centimeters from the target location. Also, the base plates can be radially extendable up to fifteen (15) centimeters.

[22] In some described embodiments, a system for securely engaging a wellbore may include a first arm pivotally coupled to a first yoke at a first end of a first arm, a second arm pivotally coupled to a second yoke at a first end of a second arm, and a rod rigidly coupled to the first yoke and slidably coupled to the second yoke and movable longitudinally. The first arm and the second arm may be pivotable when the link is translationally moved in the longitudinal direction, with the second end of the first arm and the second end of the second arm protruding axially perpendicular to the longitudinal direction.

[23] In some embodiments, the system may include a base plate pivotally coupled to a second end of a first arm and a second end of a second arm. The system may further include a protrusion attached to the second end of the second arm. The protrusion can be configured to protrude into the wellbore after translational movement of the thrust in the longitudinal direction. The first arm may include a recess configured to receive a protrusion during transport of the system in the wellbore, and the first arm, second arm, or combinations thereof may include flexible members, as described below.

BRIEF DESCRIPTION OF DRAWINGS

[23] In the detailed description of various embodiments applicable within the scope of the present invention presented below, reference is made to the accompanying drawings, in which the following is shown.

[24] FIG. 1 shows an perspective view of an embodiment of a range anchor useful within the scope of the present invention.

[25] FIG. 2 is a cross-sectional view of an embodiment of the range anchor of FIG. one.

[26] FIG. 3 shows a cross-sectional view of an embodiment of the range anchor of FIG. one.

[27] FIG. 4 shows an perspective view of an embodiment of a base plate which can be used as part of the range anchor of FIG. one.

[28] FIG. 5 shows an perspective view of an embodiment of a base plate which can be used as part of the range anchor of FIG. one.

[29] FIG. 6 is a cross-sectional view of an embodiment of the range anchor of FIG. one.

[30] FIG. 7 is a cross-sectional side view of an additional or alternative lower telescopic assembly 130.

[31] FIG. 8 illustrates an embodiment of the range anchor of the present invention that employs an electromechanical anchor.

[32] One or more embodiments are described below with reference to the listed figures.

DESCRIPTION OF PREFERRED EMBODIMENTS

[33] Before describing the selected embodiments of the present invention in detail, we point out that the present invention is not limited to the particular embodiments described herein. The disclosure and description herein is illustrative and explanatory of one or more presently preferred embodiments and variations thereof, and a person skilled in the art will appreciate that various changes in design, organization, means of operation, structures, location, methodology, and mechanical application equivalents can be made without departing from the spirit of the invention.

[34] Also, it should be understood that the drawings are for illustration and merely disclose currently preferred embodiments to a person skilled in the art, but do not serve as working drawings or finished product drawings and may include simplified conceptual views to aid understanding or explanation. Also, the relative size and arrangement of the components may differ from that shown and still be consistent with the spirit of the invention.

[34] In addition, it should be understood that different directions such as "up", "down", "down", "up", "left", "right", etc. are given only with reference to explanations in connection with the drawings, and that components can be oriented differently, for example, during transport and manufacture, as well as during operation. Since many different and different embodiments can be accomplished within the scope of the concept (s) set forth herein, and since many modifications can be made to the embodiments described herein, it is understood that the details herein are to be interpreted as illustrative and not limiting.

[36] FIG. 1 shows an perspective view of an embodiment of a range limit anchor 10 that may be positioned in the bottom hole of a wellbore. The range anchor 10 may be located in the production tubing (tubing) of the wellbore or drill string, or, in some embodiments, may be anchored in the casing of the wellbore. The ultimate range anchor 10 provides utility for anchoring in a wide range of tubing. For example, as explained in detail below, a similar embodiment of the range anchor 10 may be installed in an 8.9 centimeter (3.5 in) production tubing, retrieved, and then later installed in a 27.3 centimeter (10.75 inch) production tubing. Anchor 10, as shown, may include a lower section 12, which includes anchoring elements, as explained below, and an upper section 14, which may include electronic, mechanical, or chemical deployment elements, as explained below.

[37] As shown in FIG. 1, a centering member 16 to which the downhole tools can be coupled may be attached to the upper section 14. For example, the centering member 16 may include a fishing pin, as illustrated, for connection to the downhole tool. With such a centering member 16, the downhole tool 17 can be lowered onto the fishing neck (surrounding the centering member 16). Centering member 16 may include a boss 18 that may provide the downhole tool 17 with an azimuthal direction to which the downhole tool 17 can be synchronized. With the bump 18 providing azimuthal guiding, the precision guiding operation can be performed multiple times with one or more instruments. That is, the anchor 10 remains in the wellbore and additional downhole tools 17 can be lowered onto the centering member 16, oriented at the boss 18, put into production and retrieved. The downhole tool 17 can be locked into place on the fishing neck on the centering member 16, or locked onto the nub 18.

[39] To lock the range anchor 10 into place, the lower section 12 may include a series of retractable assemblies that can be retracted when the range anchor 10 is lowered into the wellbore. Then, when the range anchor 10 is in place, the retractable assemblies can be extended outward, as explained in detail below.

[39] In the embodiment of FIG. 1 shows a lower telescopic assembly 20 and an upper telescopic assembly 22. Each of the assemblies 20, 22 includes arms 24 and base plates 26, which are arranged as a plurality of arms 24 and a plurality of base plates 26. FIG. 1 shows an embodiment in which each plurality includes three levers 24 (i.e., a first plurality containing three levers, denoted by 24a, a third lever 24a not shown in Fig. 1, a second plurality containing three levers, denoted at 24b, the third arm 24b is not shown in Fig. 1, the third set containing three levers, indicated by the numeral 24c, the third arm 24c is not shown in Fig. 1, the fourth set containing three levers, indicated by the numeral 24d, the third arm 24d is not shown in 1) and three base plates 26 (i.e., a first set containing three base plates, designated 26a, a third base plate 26a is not shown in FIG. 1, and a second set containing three base plates, indicated by 26b, the third base plate 26b is not shown in Fig. 1, respectively). The lower assembly 20 includes a plurality of lower arms 24a, a plurality of base plates 26a, and a plurality of upper arms 24b. Likewise, the upper assembly 22 includes a plurality of lower arms 24c, a plurality of base plates 26b, and a plurality of upper arms 24d. Each plurality of arms 24 or base plates 26 may comprise at least two or many more members. For example, the plurality may include 3 (as in the illustrated embodiment), 4, 5, 6, 7, 8, 9, or more arms 24 or base plates 26, or a plurality of arms 24a-d and base plates 26a-b. Although the embodiment of the range anchor 10 shown in FIG. 1 includes two assemblies 20, 22, each assembly comprising a plurality of arms 24a-d and a plurality of base plates 26a-b, the range anchor 10 may include any number of assemblies 20, 22 to provide a secure connection in the wellbore ...

[40] As shown in FIG. 1, levers 24 may connect base plate 26 to yokes that may tie assemblies 20, 22 together. For example, as further illustrated in FIG. 1, a lower arm 24a (for simplicity, each of the plurality of arms 24a-d may be viewed below as individual arms; it should be understood that "lower arms 24a" should mean a lower arm in each plurality of lower arms 24a) in the lower assembly 20 can connect the first the end of the first base plate 26a with the lower yoke 28, and the upper arm 24b in the lower assembly 20 may connect the second end of the first base plate 26a to the middle yoke 29. With respect to the upper assembly 22, the lower arm 24c in the upper assembly 22 may connect the second base plate 26b with a middle yoke 29, and the upper arm 24d of the upper assembly 22 can connect the second base plate 26b to the upper yoke 30. The connections between the arms 24a-d and the clamps 28, 29, 30 can be pivot hinges so that the arms 24a-d can freely change the angle at which they are connected to each of the clamps 28, 29, 30.

[41] The assemblies 20, 22 can be extended radially outward in response to the action of the rod 32, which pulls on the lower head 34 of the range anchor 10 to reduce the distance between the clamps 28, 29, 30. That is, an installation tool, an electromechanical anchor, or another drawing tool, causes the rod 32 (possibly through intermediate components, as explained below) to move in the upward direction 36; and in response, the base plates 26 in the lower assembly 20 and the upper assembly 22 are simultaneously extended in a radially outward direction 44. The simultaneous movement of all of the plurality of arms 24a-d and baseplates 26a-b automatically centers the range anchor 10 in the wellbore of the tubing pipe, etc. The thrust spring 40 can be used to apply force in the downward direction 42 while the anchor 10 reaches its maximum range of travel deep into the wellbore to maintain nodes 20, 22 in direction 38 radially inward and prevent vibration or accidental movement of nodes 20, 22 due to unrestricted movement. levers 24a-d and / or base plates 26a-b.

[42] FIG. 2 shows a sectional view of an embodiment of the range anchor 10 of FIG. 1. In particular, in FIG. 2 shows the lower assembly 20 in flight or in a non-extended position with a rod 32 at the very bottom in the radial direction 42. To further provide conditions for stable movement, the base plate 26a can be secured in place by pins 46, which can be attached to the rod spring 40 or another area of the anchor 10 maximum range. The pins 46 can grip the base plate 26 on the gripping surface 48, which is stably locked until the rod 32 is deployed in the radial direction 36 upward. In other words, the lower assembly 20 shown in FIG. 2, must withstand the angle of 50 for the arms 24a-b relative to the clamps 28, 29 during the entire run into the wellbore. On a run, the angle 50 may typically be about 90 degrees, which means running with the arms 24a-b parallel to the wellbore during the run. In some embodiments, however, while cruising, the angle 50 may be greater or less than 90 degrees to meet faster deployment requirements or other deployment requirements for the range anchor 10.

[43] To deploy the range anchor 10, the rod 32 is pulled upward in the radial direction 36 as mentioned above. FIG. 2 shows that the rod 32 is rigidly attached to the lower head 34 so that when the rod 32 is pulled, all of the lower head 34, the lower yoke 28 and the attached arm 24a are pulled in the radial direction 36 upward. In contrast, the middle yoke 29 can move along the outer diameter along the link 32 so that the link 32 is free to slide through the middle yoke 29. The force from the upper assembly 22 pushes the middle yoke 29 downward (i.e., downward in the radial direction 42) with respect to the lower end 34, and the arms 24a-b and the base plate 26a are thus forced in the direction 44 radially outward.

[44] The deployed embodiment of the range limit anchor 10 of FIG. 2 is shown in FIG. 3. As shown in FIG. 3, the lower yoke 28 (with the lower head 34) is pulled closer to the middle yoke 29, and the arms 24a-b and the base plate 26a have moved radially in the direction 44 outward. The arms 24a-b now form an angle 52 of deployment relative to the collars 28, 29, and the base plate 26a remains parallel to the link 32 and, importantly, the tubing wall 62. The deployment angle 52 is generally less than the cruise angle 50 at which the range anchor 10 cruises down the wellbore with a lower profile than when the anchor 10 is deployed. The base plate 26a moves a distance 56 from the flight position (FIG. 2) to the deployment position (FIG. 3). Distance 56 may, in some embodiments, be up to 30 centimeters. For example, the range can be from 1 centimeter to 15 centimeters, from 1 centimeter to 20 centimeters, from 1 centimeter to 25 centimeters, from 5 centimeters to 15 centimeters, etc. When the rod 32 is pulled and the anchor is deployed, the surface 60 of the baseplate 26a may abut against the tubing wall 62 and the retainers 64 (shown in FIGS. 4 and 5) may be pressed into the tubing wall 62 to provide a secure fit. Since arms 24a-b and baseplate 26a can be deployed or extended at the same time, baseplate 26a and / or retainers 64 (shown in FIGS. 4 and 5) in each plurality or assembly 20, 22 can be pressed into tubing wall 62 with equal strength and synchronization. That is, when one baseplate 26a can contact the tubing wall 62 before the other baseplate 26a, the range anchor 10 must be centered before any of the baseplates 26a applies any pressure that would effectively crush the latches. 64 into the tubing wall 62. Retainers 64 reduce the likelihood of slippage or shear after deployment, and retainers 64 can be of any combination of shapes and sizes to securely press into tubing wall 62. The illustrated embodiments include a frusto-conical retainer 70, a tapered retainer 72, and a multi-point retainer 74 as shown in FIG. 2 and 3.

[45] FIG. 4 shows an embodiment of a base plate 26 that can be used in the range anchor 10 of FIG. 1-3. As shown, the base plate 26 employs retainers 64 of a uniform size and shape. In particular, in FIG. 4 illustrates a two-by-three point taper retainers 72. The size, shape, and / or placement of retainers 64 may depend on the type of tubing wall 62 into which the retainers 64 are to be pressed. For example, for a tubing wall 62 that is severely corroded and / or rusty, with loose or softened material on the inner surface 80 (shown in FIG. 3), an anchor 64 may be employed that penetrates deeper into the inner surface 80. C on the other hand, if the tubing wall 62 has a hard and / or polished surface, the retainers 64 may use smaller, sharper and / or more points on the surface 60 of the base plate 26.

[46] A further but non-limiting example of FIG. 5 shows an embodiment of a base plate 26 having five retainers 64 disposed on a surface 60 of the base plate 26. In the embodiment of FIG. 5 includes a larger multi-point retainer 74 mounted in the center of the base plate 26 with several smaller frustoconical anchors 70 positioned at the corners of the base plate 26. In addition, the base plate 26 in the embodiment shown in FIG. 5 includes chemical anchors 82, which can use glue, epoxy, adhesive, or other chemicals to secure the base plate 26 to the tubing 62 wall.

[47] To protect the retainers 64 during a run in the wellbore, the base plate 26 may include a retainer cap 84 (shown in FIGS. 2 and 3). Anchor cap 84 may be attached to surface 60 during a downhole trip and, in some embodiments, is made of a low friction material. For example, the retainer cover 84 may include a polymer, ceramic, plastic, silicone, rubber, or other protective material. The cover allows the base plate 26 and the range anchor 10 to pass through the elements in the wellbore, which can without it come into contact with the latches 64 and interfere with the flight. In addition, the retainer cover 84 protects the retainers 64 so that any sharp points of the retainers 64 remain sharp prior to deployment. Once the range anchor 10 has been deployed, the retainer cover 84 may be deformed, compressed, or crushed to allow the retainers 64 to collide with the inner surface 80 of the tubing wall 62. In the illustrated embodiment, FIG. 3 retainer cap 84 is shattered and should dissolve or fall down into the wellbore.

[48] FIG. 6 shows an embodiment of the upper section 14 of the range anchor 10 of FIG. 1. As shown, the upper section 14 of the range anchor 10 can be used to house a housing 98 that assists in keeping the retractable assemblies 20, 22 in a deployed position after deployment. FIG. 6 shows the top section 14 prior to pulling out the link 32. As shown, the sleeve 100 of the link 32 sits at the bottom of the cavity 102 on a shoulder 120 that rests in contact with the housing seating surface 104. As explained above, the range anchor 10 can travel down the wellbore at a given position. To deploy the range anchor 10, a rod 32 may be connected to the first end of the locating rod 106 with a shear pin 108. The locating rod 106 can be connected at the other end to a locating tool, electromechanical anchor, or other downhole pulling device that pulls the locating rod 106 towards itself. The locating bar 106, the shear pin 108, and the link 32 can be moved upward in the direction 36 relative to the housing 98. Similar to the middle yoke 29 described above, the upper yoke 30 can be slidably connected to the link 32, which allows the link 32 to move axially in the direction 36 upward, and thus causes the arms 24 to move radially 44 outward. To prevent deformation of the tubing wall 62, the shear pin 108 may be calibrated to shear at a given deployment force. In some embodiments, the electromechanical anchor can be calibrated or programmed to shut off power when some deployment force is detected (eg, less than the force that deforms the tubing wall 62). In such embodiments, the range anchor 10 may not have a shear pin 108. The deployment force is large enough to press the retainers 64 into the interior surface 80 of the tubing wall 62, but small enough to force the range anchor 10 and the pump wall 62 into position. - the compressor pipes are not deformed or otherwise damaged. After deployment of the range anchor 10, the setting tool (if applicable), the setting rod 106, and any portion of the shear pin 108 attached to the setting rod 106 may be retrieved back to the surface from the wellbore. In some embodiments, the electromechanical anchor used to set the range anchor 10 may remain in the bottomhole until the range anchor 10 is ready to be retrieved.

[49] The link 32 can be held in place by various securing devices. For example, top section 14 may include a hitch lock 110 retaining shear pin 122 and ridges 112 within cavity 102 of housing 98 . The ridges 112, in the embodiment shown, are configured to allow the hitch lock to slide axially in the upward direction 36, but prevent the hitch lock 110 from sliding in the downward direction 42. The lower edge 114 of each ridge 112 may be slightly chamfered to reduce friction between the upper edge 116 of the hitch lock 110 and the lower edge 114 of each ridge 112. The upper edge 118 of the ridge 112 is, however, beveled to increase the holding capacity of the lower edge 120 of the hitch lock 110. The hitch lock 110 may also include a hitch spring 124 that increases the force of the hitch lock 110 acting radially outwardly on the ridges 112. The hitch lock 110 may include embodiments where the hitch spring 124 is a coil spring or, as illustrated, may include resilient material, or an arcuate spring that urges the hitch lock 110 against ridges 112.

[50] Once deployed, the anchor 10 can remain at the deployment site for a number of jobs. One or more tools can be run downhole and onto centering element 16 for operation. After completing all the required tool work, the operator can remove the anchor 10 of the maximum range by returning the retractable nodes 20, 22 to the position of the flight. For example, an electromechanical governor can use a motor to pull the thrust 32 in the direction 42 back downward relative to the upper section 14 and upper yoke 30. The thrust 32 can also be released by crushing or shearing the retention shear pin 122. The retention shear pin 122 can be calibrated for crushing at a threshold tripping force on the anchor 10 of the maximum operating range. Alternatively, the extraction tool can be lowered and secured to the centering member 16 and pulled axially in the upward direction 36. At a threshold trip force, the retention shear pin 122 shears off, allowing the link 32 to be disengaged from the drawbar 110. The downhole end of the collar 100 should engage with the shoulder 120 mouth end upon extraction. The link spring 40 forces the link 32 to remain in the extended position, which holds the extendable assemblies 20, 22 in the direction 38 radially inward 38 so that the anchor 10 can be fully withdrawn. The retrieval operation can be performed with the last tool to be oriented on the anchor 10. The latter tool then must be positioned to apply sufficient additional tension to the anchor 10 such that the retaining shear pin 122 breaks or shears.

[51] FIG. 7 is a cross-sectional side view of an additional or alternative lower telescope 130. The lower telescope 130 includes a lower arm 132a that can be attached to the lower yoke 28 in a manner similar to the other lower arm 24a. Likewise, the upper arm 132b can be attached to the middle yoke 29 in the same manner as described above. As illustrated, however, the lower telescopic assembly 130 may include embodiments for securing the anchor 10 to the wellbore without the base plate 26 described above. Instead, the lower telescopic assembly 130 may employ a fastening protrusion 134 that protrudes from the upper end 142 of the upper arm 132b. Ridge 134 includes ridges 136 that are pressed into the wellbore. The indentation of the ridges 136 secures the positioning of the anchor 10 during orientation in the subsequently anchored instruments. The ridges 136 may be additional or alternative to those shown in FIG. 7 size, shape, and / or placement depending on the material into which the ridges 136 are to be pressed. As with anchors 64 (explained above), due to size, shape, and / or placement, ridges 136 may penetrate deeper into the interior surface if the tubing wall 62 is severely corroded and / or rusty, has loose or softened material on its inner surface 80. On the other hand, if the tubing wall 62 is made of a hard material and / or has a polished surface, smaller, sharper and / or larger points can be used for the ridges 136.

[51] During transport of the anchor 10 in the wellbore, the lower arm 132a and the upper arm 132b are substantially parallel to the link 32, which narrows the profile of the range anchor 10, similar to the embodiment shown in FIG. 2 and described above. The protrusion 134 is in line with the arms 132a, 132b. The lower arm 132a includes a recess 138 cut in the lower arm 132a; and during transport, the protrusion 134 is positioned in a recess 138 to protect the ridges 136 and provide smooth descent of the anchor 10. The lower arm 132a can be attached to the left side 137 and the right side 140 of the upper arm 132b, which allows for smooth and reliable deployment of the protrusion 134 against the bore wells. In some embodiments, the lower arm 132a may include a ridge having ridges at the upper end to further secure the anchor 10 in the wellbore. In a further or alternative embodiment, the upper arm 132b and the lower arm 132a can be interchanged. That is, the lower arm may include a projection 134 and the upper arm 132b may include a recess 138.

[53] The upper arm 132b (or lower arm 132a in some embodiments) may also include flex members 144, or other cushioning members, that provide cushioning or flexibility to the upper arm 132b during deployment. Flexibility and cushioning can be useful for making and maintaining the connection between the lip 134 and the wellbore. For example, as shown in FIG. 6, as the hitch 110 slides in the upward direction 36 along the ridges 112, each ridge 112 slides individually past the hitch 110. When the shear pin 108 shears off, the hitch 110 may experience reverse sliding. This slight slip can occur especially if the hitch 110 is only partially pulled from one ridge 112 to the next ridge 112. This can be very small (for example 0.006 inches or 0.152 mm) due to the short length of the ridges 112, but can still cause loss a protrusion 134 of some traction force with the wellbore.

[54] To prevent this loss of traction force, the flex members 144 (as shown in FIG. 7) provide some increase in potential spring energy prior to shearing shear pin 108. That is, the rod 32 pulls the collars 28, 29 to move the arms 132a, 132b in the direction 44 outward until lip 134 contacts the wellbore. The upper arm 132b can then flex to create potential spring energy between the wellbore and the link 32. Following the flex of the upper arm 132b, the shear pin 108 is sheared and the potential spring energy from the bend absorbs any loss in traction due to the displacement of the clutch lock 110 between the ridges 112 The potential energy of the spring pushes the projection 134 against the wellbore with additional force that increases the frictional force and thus the overall ability of the range anchor 10 to remain in a fixed position.

[55] Flexible members 144 may include grooves, grooves, grooves, or other physical changes to an arm (eg, upper arm 132b) to provide a rigid arm to bend or arcuate without deforming or permanently bending. Flexible members 144 can also include significant leverage variations. For example, the arms 132 can be constructed of flexible metal, polymer, rubber, or other material that does not deform under stress. In addition, flex members 144 may include combinations of data or other features that enable the arms 132 to provide increased force normal to the inner surface of the wellbore.

[56] In some embodiments, the implementation of the anchor 10 may be intentionally deviated from the center of the wellbore. For example, the lower arms 132a and the upper arms 132b may vary in length from one plurality of retractable assembly 130 to another plurality. That is, the upper arm 132b of one plurality may be longer than the upper arms 132b of the other plurality of retractable assembly 130. This may result in the shortened upper arm 132b being attached to the middle yoke 29 and the longer upper arm 132b to the different middle yoke. When the retractable assembly 130 is deployed, the longer arms of one plurality should cause the anchor 10 to retract from the center of the wellbore before engaging the shortened arms of the other plurality of the borehole wall. Alternatively or additionally, the connection point 146 between the lower arm 132a and the upper arm 132b can be adjusted to offset the anchor 10 from the center of the wellbore. In the illustrated embodiment, FIG. 7, both of the lower arms 132a and both of the upper arms 132b are of substantially equal length, and the connection point 146 is located near the ends of these arms 132a, 132b, as shown. However, in some embodiments, the lower arm 132a may be longer, with a recess 138 covering more of the area of the upper arm 132b. That is, the lower arm 132a can extend on either side of the upper arm 132b to any connection point, for example, see joint 148.

[56] In embodiments with longer recesses 138, the joint 148 may be positioned closer to the middle yoke 29 by an extension length 150, thus repositioning the joint point 146 at the joint 148. The lengths of the upper arms 132b may remain the same, however, the point 146 connections can be changed for any connection 148 along the upper arm 132b. When coupling point 146 is positioned at connection 148 and located closer to middle yoke 29, deployment of telescopic assembly 130 may cause protrusion 134 to extend further from lower telescopic assembly 130. This would provide upper arm 132b with protrusion 134, additional extension from range anchor 10 for a given distance of translation of the rod 32. Thus, if the connection point 146 is set at a different connection 148 for each plurality of arms 132a, 132b, the range anchor 10 must be set eccentrically in the wellbore.

[58] FIG. 8 shows an embodiment of the range anchor 10, where an electromechanical anchor is applied in the upper section 14. The electromechanical section should be installed on the wellhead side, in the direction 36 from the upper yoke 30. The electromechanical section may include a hitch lock 110, a shear pin 122 , a rotary device (such as an actuator, motor, pusher, etc.) and a communication device (such as an electronic board unit). You can send a signal to the communication device to initiate an installation procedure or an extraction procedure. The signal can be transmitted from the surface by sending a pressure wave, which is detected by the communication device, or by direct electronic communication through a wired connection. In addition, the communication device can begin the deployment procedure when a set of desired conditions are found in the wellbore. The set of desired conditions may include pressure, temperature, chemistry, orientation (e.g., deploy only in a horizontal wellbore), acceleration (e.g., exclude deployments in motion), and time (e.g., exclude deployments until some time has elapsed after discharge into the wellbore). wells). The communication device must transmit a signal to the rotary device to initiate the sequencing sequence. Initiation of the pivot device should result in movement in direction 36 towards the mouth of the thrust 32 and the system should respond as indicated above. Additionally, the retrieval process can include a second signal or a group of detectable signals for reversing the movement of the pivot device. The pulling process may also include applying significant force 36 upward in the system to shear the pin connecting the hitch lock 110 and the rod 32. Shearing the pin would disengage the profiles from the casing and the anchor arms would fold down to a cruise angle 50.

[59] While described with emphasis on various embodiments applicable within the scope of the present invention, it should be understood that within the scope of the appended claims, the present invention may be practiced differently than described herein.

Claims (42)

1. A system for ensuring the installation of a reusable self-centering anchor in a wellbore, comprising: range anchor containing: a first retractable assembly configured to engage a wellbore, the first retractable assembly comprising: a first plurality of levers connected to the first yoke; a second plurality of levers connected to the second yoke; and a plurality of base plates, wherein each base plate in the plurality of base plates is connected on a first side to a first plurality of levers and is connected on a second side to a second plurality of levers, and wherein each base plate comprises a retainer connected to a radially outer surface and configured to reliably wellbore engagement; and a rod rigidly coupled to the first yoke and slidably coupled to the second yoke, forcing the thrust in the axial direction shortens the distance between the first yoke and the second yoke and causes the first and second plurality of arms to move the plurality of base plates radially toward the wellbore. 2. The system according to claim 1, comprising: a second retractable assembly configured to engage a wellbore, comprising: a third plurality of levers connected to the second yoke; a fourth plurality of levers connected to the third yoke; and a second plurality of base plates, each base plate in the second plurality of base plates being connected on a first side to a third plurality of arms and connected on a second side to a fourth plurality of arms. 3. The system of claim 1, wherein the range anchor comprises a housing and the rod comprises a coupling lock, wherein the coupling lock is capable of engaging with the body to maintain an axial position of the rod relative to the body when the rod is forced in the axial direction. 4. The system of claim. 3, in which the coupling lock is configured to disengage from the body in response to forced feed of the body in the axial direction at a threshold disengaging force. 5. The system of claim. 1, in which the plurality of base plates are configured to move a distance of up to 15 centimeters in the radial direction to engage with the wellbore. 6. The system of claim. 1, wherein the retainers are tapered retainers, semi-conical retainers, toothed retainers, or other retainers for securely engaging the wellbore. 7. The system of claim 1, wherein the first retractable assembly comprises a thrust spring, fastening pins, fastening belts, or other fastening devices to prevent radial movement of the plurality of base plates prior to forced thrusting. 8. The system of claim 1, comprising a retainer cover configured to overlap the retainers, the retainer cover preventing interaction between the retainers and the wellbore when the range anchor is deployed to a certain depth in the wellbore. 9. The system according to claim. 1, in which the anchor of the maximum range of action contains a setting rod, made with the possibility of connecting to a rod, with a key at the first end, and with a setting tool at the second end, while the setting tool pulls the setting rod to force the thrust in the axial direction. 10. The system of claim. 9, wherein the key is configured to cut the locating rod from the rod when pulled by the locating force. 11. A method of performing work in the bottomhole zone of a wellbore, at the stages of which: the anchor of the maximum range of action is lowered into the wellbore, while the anchor of the maximum range of action contains a connecting head for the tool; actuating an axially thrust setting tool to extend the plurality of levers radially, each base plate in the plurality of base plates being coupled on the first side to the first link of the plurality of links and coupled on the second side to the second link of the plurality of links, and extending the plurality of levers moves the base plates radially to securely engage the wellbore with retainers coupled to the radially outer surface of the base plates; lowering the first tool onto the tool connection head; do the first job with the first tool; retrieve the first tool to the surface from the wellbore; lowering the second tool onto the tool connection head; perform the second work with the second tool in the second place; and the second tool is retrieved to the surface from the wellbore. 12. The method of claim 11, wherein the tool coupling head is axially pulled toward itself to disengage the plurality of base plates from the wellbore. 13. The method of claim 11, wherein the step of performing the first job, the second job, or combinations thereof, actuates the axial torch, radial torch, rock drill, production tubing cutter, or combinations thereof. 14. The method of claim 11, wherein when the setting tool is actuated, the setting rod is cut from the linkage, the cutting is made possible when the plurality of base plates are engaged with the wellbore. 15. The method of claim 11, wherein the first job is completed at the target location and the second job is completed at 3 centimeters or less than 3 centimeters from the target location. 16. The method of claim 11, wherein the base plates are radially extendable up to 15 centimeters. 17. A system for reliable engagement of a wellbore, comprising: a first arm pivotally connected to a first yoke at a first end of the first arm; a second arm pivotally connected to a second yoke at a first end of the second arm; a base plate pivotally connected to a second end of the first arm and a second end of the second arm, and a rod rigidly connected to the first yoke and slidably connected to the second yoke, and made with the possibility of translational movement in the longitudinal direction, while the first lever and the second lever are rotatable when the rod moves translationally in the longitudinal direction, while the second the end of the first arm and the second end of the second arm protrude in an axial direction perpendicular to the longitudinal direction. 18. The system of claim 17, comprising a protrusion attached to the second end of the second arm, the protrusion being configured to protrude into the wellbore after translational movement of the rod in the longitudinal direction. 19. The system of claim 18, wherein the first arm, second arm, or combinations thereof comprise flexible members. 20. The system of claim. 18, comprising a centering element configured to receive the downhole tool and lock the downhole tool in place.

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