MOVING SLEEVE ANCHOR TIE ROD JOINT SYSTEM

Abstract

A movable sleeve anchor tie rod seal system may include a body portion and an inflatable material arranged around a circumference of the body portion. The inflatable material is configured to expand in response to exposure to wellbore fluids. In addition, the system may include an upper end ring disposed axially above the inflatable material, a lower end ring disposed axially below the inflatable material, and a sleeve disposed radially outward from the inflatable material and sealed against the upper end ring and / or the lower end ring in an insertion position to isolate the inflatable material from wellbore fluids.The sleeve is configured to make contact with a downhole element in an adjustment position and the contact with the downhole element is configured to move the sleeve in order to expose the inflatable material to wellbore fluids so that the inflatable material expands to provide a seal against a tubular downhole element.

Description

Title of the invention: MOVING SLEEVE ANCHOR TIE ROD JOINT SYSTEM REFERENCE TO RELATED APPLICATIONS

[0001] This application is a non-provisional conversion of the U.S. provisional application serial number 63 / 405,607, filed on September 12, 2022. BACKGROUND

[0002] In certain wellbore operations, one or more lost column anchors may be lowered into the borehole. Lost column anchors may be lowered into the borehole to improve the flow of production fluid (e.g., hydrocarbons). In other words, having a smaller diameter, via the lost column anchor, for the flow of production fluid can increase the flow velocity of the production fluid. Traditionally, lost column anchors are sealed to the bottom of the borehole on a lost column suspension device. However, for large-diameter lost column suspension devices, it is often difficult to obtain a reliable anchor seal because the relatively large diameter of the pistons in an anchor seal system may not be flush with the internal diameter of the lost column suspension device.To solve this problem, pistonless anchor bolt joints can instead be lowered into the borehole. Some of these anchor bolt joints can be configured to expand in response to contact with wellbore fluids. Unfortunately, these anchor bolt joints can expand prematurely (i.e., before reaching the lost column suspension device) in the borehole. Brief description of the drawings

[0003] These drawings illustrate certain aspects of some of the embodiments of this disclosure and shall not be used to limit or define the process.

[0004] [Fig.1] illustrates a well completion system, in accordance with certain embodiments of this disclosure.

[0005] [Fig.2A] and [Fig.2B] illustrate cross-sectional views of a movable sleeve anchor tie rod joint, in accordance with certain embodiments of this disclosure.

[0006] [Fig.3A] and [Fig.3B] illustrate cross-sectional views of a movable sleeve anchor tie rod joint system having a hydrostatic assist chamber, according to certain embodiments of this disclosure.

[0007] [Fig.4A], [Fig.4B] and [Fig.4C] illustrate cross-sectional views of a system of movable sleeve anchor tie rod joint ensuring a seal against a casing and a lost column suspension device, in accordance with certain embodiments of this disclosure. DETAILED DESCRIPTION

[0008] The invention relates to a movable sleeve anchor bolt joint system configured to form a joint with a lost column suspension device, a lost column, and / or casing, positioned near the lost column suspension device. As detailed below, the movable sleeve anchor bolt joint system comprises at least one sleeve that covers an inflatable sealing material. The sleeve prevents fluid from the wellbore from contacting the inflatable sealing material, thus preventing premature expansion of the inflatable sealing material when the tool (e.g., a movable sleeve anchor bolt joint system) is lowered into the hole.When the tool reaches the lost column suspension device, the corresponding lost column and / or casing, contact between the tool and the lost column suspension device and / or any other downhole element having a suitable geometry can actuate the sleeve and expose the inflatable sealing packing material to the borehole so that the inflatable sealing packing material can react and expand to form a seal (e.g., an anchor tie rod seal) at the corresponding lost column suspension device, the lost column and / or the casing in the vicinity of the lost column suspension device.

[0009] Figure 1 illustrates a wellbore completion system according to certain embodiments of this disclosure. As illustrated, the wellbore completion system 100 may include casing 102 (for example, a casing stack) placed inside a borehole (for example, a borehole 104). In particular, the casing 102 may be lowered into the borehole to a desired position during completion operations. Once in position, the casing 102 may be cemented or otherwise fixed in place. The casing 102 may support surrounding downhole formations 106 during production operations. In addition, the casing 102 may provide a flow path for production fluid (for example, hydrocarbons) along the borehole 104.Furthermore, as illustrated, a lost column 108 can be attached to a bottom end 110 of the casing 102 via a lost column suspension device 112. That is to say, the lost column 108 can be suspended from the casing 102 so that the lost column 108 extends down the hole from the end of . The downhole 110 of the casing 102. The lost column 108 can extend the flow path for production fluid (e.g., hydrocarbons) along the wellbore 104. During completion operations, the production fluid can flow through the lost column 108, the casing 102, and / or additional tubing elements to the surface. The terms "lost column," "casing," and "tubing element" are generally used to describe tubular wellbore components used for various purposes in wellbore operations. Lost columns 108, casings 102, and tubing elements can be made from various materials (metal, plastic, composite, etc.), can be expanded or unexpanded as part of an installation procedure, and can be segmented or continuous. It is not necessary for the lost column 108 or the casing 102 to be cemented in position.Furthermore, any type of lost column, casing or tubular element can be used in accordance with the principles of the present invention.

[0010] In addition, a lost column anchor tie rod 116 can be lowered into the hole through the casing 102 to the lost column suspension device 112 and / or the lost column 108 to help improve the flow of production fluid (e.g., hydrocarbons) through the casing 102 and / or other tubular elements. In particular, the lost column anchor rod 116 can be sealed to the lost column suspension device 112, to the lost column 108 and / or to the casing 102 near the lost column suspension device 112 so that the production fluid flowing from the lost column 108 can flow through the lost column anchor rod 116 instead of through the casing 102. As illustrated, the lost column anchor rod 116 has a smaller diameter than the casing 102, which can improve the flow of the production fluid to the surface 118.Furthermore, the lost column anchor rod 116 can be configured to provide a seal to the lost column suspension device 112, the lost column 108, and / or the casing 102 via a movable sleeve anchor rod seal system 120 located at a lower end 122 of the lost column anchor rod 116. As detailed below, the movable sleeve anchor rod seal system 120 includes at least one sleeve that covers an inflatable material (e.g., an inflatable packing material), which expands in response to exposure to wellbore fluid (shown in [Fig. 2A]). The sleeve prevents wellbore fluid from contacting the inflatable material so that the inflatable material does not expand prematurely when the tool (e.g., the movable sleeve anchor rod seal system 120) is lowered into the hole.When the tool 120 reaches the lost column suspension device 112, the lost column 108 and / or the casing 102 in the vicinity of the lost column suspension device 112, the contact between the tool 120 and a . bottom hole element (for example, the lost column suspension device) 112, the lost column 108 and / or another element with suitable geometry) can actuate the sleeve and expose the inflatable material to the borehole 104 so that the inflatable material can react and expand to form a seal (e.g., an anchor bolt seal) at the lost column suspension device 112, the lost column 108 and / or the casing 102 (shown in Figures 2B, 3B and 4C).

[0011] Figures 2A to 2B illustrate cross-sectional views of a mobile sleeve anchor bolt seal system in an insertion position and a set position, respectively, according to certain embodiments of this disclosure. As illustrated in [Fig.2A], the movable sleeve anchor tie rod joint system 120 comprises a body part 200 (for example, a cylindrical body) having an inflatable material 202 arranged around a circumference of the body part 200.In particular, the inflatable material 202 can be disposed between an upper end ring 204 and a lower end ring 206, each of which is arranged around the body portion 200. The upper end ring 204 can be positioned upstream of the lower end ring 206. Furthermore, the upper end ring 204 and the lower end ring 206 can be configured to support the inflatable material 202 (for example, to restrict the axial movement of the inflatable material 202 relative to the body portion 200) when the movable sleeve anchor tie rod joint system 120 is lowered into the hole and fixed in the set position. As noted above, the inflatable material 202 can be configured to expand in response to exposure to wellbore fluids.The upper end ring 204 and the lower end ring 206 can restrict the expansion of the inflatable material 202 in axial directions so that the inflatable material 202 can expand more in a radial direction. However, the movable sleeve anchor tie rod joint system 120 may also include a sleeve 208 configured to isolate the inflatable material 202 from the wellbore fluid in the insertion position in order to prevent the inflatable material 202 from prematurely expanding in the wellbore 104. As further detailed below, the sleeve 208 can be moved into the set position so that the inflatable material 202 can expand to seal the movable sleeve anchor tie rod joint system 120 against a lost column suspension device 112, a corresponding lost column 108 and / or casing 102, disposed near the lost column suspension device 112.

[0012] Furthermore, as illustrated, the body portion 200 can include the lower end 122 of the lost column anchor tie rod 116. That is to say, the lower end of the lost column anchor tie rod 116 can be the body portion 200 of the movable sleeve anchor tie rod joint system 120 so that the material The inflatable 202 can be arranged around the lower end of the lost column anchor rod 116. Alternatively, the body part 200 can be a separate body attached to the lower end of the lost column anchor rod 116. For example, the lower end of the lost column anchor rod 116 and the movable sleeve anchor rod seal system 120 can have corresponding threads so that the movable sleeve anchor rod seal system 120 can be screwed into the lower end of the lost column anchor rod 116. Furthermore, the body part 200 (for example, the cylindrical body) is hollow so that production fluids (for example, hydrocarbons) can flow through a central tool bore 210 of the body part 200 and a central anchor rod bore 212 of the lost column anchor rod 116 to the surface 118 (represented on the [Fig.l]) during production operations. .

[0013] Furthermore, as noted above, the inflatable material 202 can be configured to expand in response to exposure to wellbore fluids. In particular, the inflatable material 202 can be configured to expand in response to a chemical reaction between the inflatable material 202 and the fluid in the wellbore 104. That is, the inflatable material 202 can comprise a particular metal alloy material configured to undergo a chemical reaction in response to exposure to downhole fluids. The chemical reaction can transform the metal alloy material into a rock-like material. As the metal alloy material transforms into a rock-like material, the inflatable material 202 can expand.The inflatable material 202 can expand radially outward due, at least in part, to the upper end ring 204 and the lower end ring 206 restricting the axial expansion of the inflatable material 202. The inflatable material 202 can comprise any suitable alloy configured to expand in response to exposure to downhole fluids. Alternatively, the inflatable material 202 can be configured to expand in response to fluid absorption (e.g., water, hydrocarbons, etc.) from the wellbore 104. For example, the inflatable material 202 can include an inflatable elastomeric seal configured to absorb downhole fluid. As the inflatable elastomeric seal absorbs the downhole fluid, the inflatable elastomeric seal can increase in volume.The increase in volume can cause the inflatable elastomer seal to expand in a radially outward direction 214.

[0014] As indicated above, the movable sleeve anchor tie rod joint system 120 may further include the sleeve 208 configured to enclose the inflatable material 202 in the insertion position to prevent the inflatable material 202 from prematurely expanding in the borehole 104. As illustrated, in In the insertion position, a lower end 216 of the sleeve 208 is attached to the lower end ring 206 and an upper end 218 of the sleeve 208 is attached to the upper end ring 204 to seal the inflatable material 202 of the borehole 104. In particular, the sleeve 208 can be attached to the lower end ring 206 and the upper end ring 204 via at least one fastener 220. Alternatively, the sleeve 208 can only be attached to either the lower end ring 206 or the upper end ring 204 via at least one fastener 220. That is, the sleeve 208 can only be attached to the movable sleeve anchor tie rod system 120 at one location via at least one fastener 220.However, the sleeve 208 can alternatively be fixed, via at least one fastener 220, at multiple locations along the length of the sleeve 208 and can be fixed to any suitable part of the movable sleeve anchor tie rod joint system 120.

[0015] Furthermore, at least one fastener 220 can restrict the axial and / or radial movement of the sleeve 208 relative to the lower end ring 206 and the upper end ring 204 so that the seal between the sleeve 208 and the end rings (for example, the upper end ring 204 and the lower end ring 206) can be maintained when the movable sleeve anchor tie rod seal system 120 is lowered into the hole. At least one fastener 220 can include at least one shear pin. For example, at least one upper shear pin 222 can secure the sleeve 208 to the upper end ring 204 and / or at least one lower shear pin 224 can secure the sleeve 208 to the lower end ring 206.However, any suitable fastener can be used to temporarily restrict the axial and / or radial movement of the sleeve 208 relative to the end rings 204, 206 when the movable sleeve anchor tie rod joint system 120 is lowered into the hole.

[0016] Furthermore, as indicated above, the lower end ring 206 can be arranged around the body part 200 in a position below the inflatable material 202, and the upper end ring 204 can be arranged around the body part 200 in a position above the inflatable material 202. As illustrated, respective radially internal surfaces of the lower end ring 206 and the upper end ring 204 can be sealed to the body part 200. In addition, the sleeve 208 (for example, a metal sleeve) can have a tubular shape that can be arranged around the end rings 204, 206, and the body part 200 to enclose the inflatable material 202. As such, the sleeve 208 can extend at least axially from the lower end ring 206 to the upper end ring 204. around the circumference of the body part 200. Indeed, an internal surface 226 of the sleeve 208 at the lower end 216 of the sleeve 208 is configured to interface (e.g., seal) with a radially external surface 228 of the lower end ring 206, and the internal surface 226 of the sleeve 208 at the upper end 218 of the sleeve 208 is configured to interface (e.g., seal) with a radially external surface 230 of the upper end ring 204 so that the sleeve 208 can seal the inflatable material 202 of the borehole 104 in the insertion position.

[0017] Figure 2B shows the movable sleeve anchor tie rod joint system 120 in the set position. As noted above, the movable sleeve anchor tie rod joint system 120 can be lowered into the borehole during completion operations to form a seal (e.g., an anchor tie rod joint) with a downhole tubular element 232 (e.g., the lost column suspension device 112, the lost column 108, the casing 102, etc.) so that production fluid can flow from the lost column 108, into the lost column anchor tie rod 116, and to the surface 118 (shown in Figure 1). As illustrated, in the set position, the inflatable material 202 can expand to come into contact with and form a seal against the lost column suspension device 112.However, the inflatable material 202 can, alternatively or in addition, expand at the set position to come into contact and form a seal against the lost column 108 and / or the tubing 102.

[0018] Furthermore, to form the anchor rod seal, the sleeve 208 of the movable sleeve anchor rod seal system 120 can be moved to a set position so that the inflatable material 202 can expand. As illustrated, the sleeve 208 can have a diameter similar to that of a top of the lost column suspension device 112 (for example, a polished bore receptacle) so that the sleeve 208 can be radially aligned with the lost column suspension device 112 when the movable sleeve anchor rod seal system 120 is lowered into the hole. Consequently, when the tool (for example, the movable sleeve anchor rod seal system 120) moves axially down the hole to the set position (as illustrated), the sleeve 208 first comes into contact with an upper surface 234 of the lost column suspension device 112 in a set position.Such contact with the lost column suspension device 112 can cause the sleeve 208 to move / displace to expose the inflatable material 202 to wellbore fluids so that the inflatable material 202 can expand and provide a seal against the downhole tubing element 232 (e.g., the lost column suspension device 112, the lost column 108 and / or the casing 102).

[0019] In particular, the contact between the sleeve 208 and the upper surface 234 of the lost column suspension device 112 can prevent the sleeve 208 from moving further in an axial downhole direction 236 relative to the lost column suspension device 112. However, the weight on the movable sleeve anchor tie rod joint system 120, at least part of the weight of the lost column anchor tie rod 116, can cause the body part 200, the inflatable material 202, the lower end ring 206 and the upper end ring 204 of the movable sleeve anchor tie rod joint system 120 in the axial downhole direction 236 relative to the lost column suspension device 112.As such, the weight on the tool can shear at least one fastener 220 (for example, shear pins) fixing the sleeve 208 to the end rings 204, 206 so that the sleeve 208 detaches from the end rings 204, 206. With the sleeve 208 detached, the body part 200, the end rings 204, 206 and the inflatable material 202 can move axially down the hole relative to the sleeve 208 due to the weight on the tool. As illustrated, the body part 200, the end rings 204, 206 and the inflatable material 202 can move axially downhole in a central bore of the lost column suspension device 238 of the lost column suspension device 112. In addition, when the sleeve 208 is moved, the inflatable material 202 can be exposed to the borehole 104 (e.g. borehole fluids).When the inflatable material 202 reacts with wellbore fluids, the inflatable material 202 is configured to expand so that a radially external surface 240 of the inflatable material 202 comes into contact and forms a seal against the lost column suspension device 112.

[0020] Figures 3A to 3B illustrate cross-sectional views of a movable sleeve anchor tie rod joint system having a hydrostatic assist chamber, according to certain embodiments of this disclosure. In particular, [Fig. 3A] illustrates the movable sleeve anchor tie rod joint system 120 with a hydrostatic assist chamber 300 (“chamber”) disposed in the insertion position. The chamber 300 is configured to provide a load force to assist in completing a full stroke of the sleeve 208 from the insertion position to a stroke position.More specifically, the chamber 300 is configured to assist in a complete stroke of the sleeve 208 such that the lower end 216 of the sleeve 208 is moved from a radially outward position aligned axially with the inflatable material 202 (e.g., the insertion position) to an axially hole-top position from an upper end 302 of the inflatable material 202 (e.g., the stroke position). In some embodiments, the inflatable material 202 may have . an axial length greater than that of the polished bore receptacle 304 of the lost column suspension device 112. As such, the movable sleeve anchor tie rod joint system 120 can reach the bottom at the bottom end of the hole 306 of the polished bore receptacle 304 before the sleeve 208 completes a full stroke. The hydrostatic assist chamber 300 can be configured to drive the sleeve 208 in an axial direction at the top of the hole 308, relative to the body portion 200, to the full stroke position in response to shearing of at least one fastener 220 (for example, at least one lower shear pin 224).Furthermore, after shearing at least one fastener 220, the hydrostatic assist chamber 300 can be configured to perform a full stroke of the sleeve 208 without additional forces generated by contact between the sleeve 208 and the lost column suspension device 112 and / or another suitable downhole element.

[0021] The hydrostatic assist chamber 300 can be configured to contain a compressible fluid (e.g., air) at atmospheric pressure. As illustrated, the chamber 300 can be arranged axially above the inflatable material 202 and radially between the sleeve 208 and the body part 200. For example, the chamber 300 can be defined by a radially internal surface 226 of the sleeve 208, a radially external surface 310 of the body part 200, a bottom hole surface 312 of an upper chamber ring 314, and a top hole surface 316 of a sleeve wall 318. The upper chamber ring 314 is arranged around the body part 200 in an axially top-of-hole position relative to the upper end ring 204.The upper chamber ring 314 can be rigidly fixed to the body part 200 so that the upper chamber ring 314 maintains a fixed distance from the upper end ring 204 during operation. For reasons explained in more detail below, the stroke length of the sleeve 208 from the insertion position to the stroke position can be based, at least in part, on the distance between the upper end ring 204 and the upper chamber ring 314. Furthermore, a radially internal surface 320 of the upper chamber ring 314 can be fixed against the radially external surface 310 of the body part 200 so that the upper chamber ring 314 is sealed against the body part 200 to prevent compressible fluid from flowing out of the chamber 300.In addition, a radially external surface 322 of the upper chamber ring 314 can be sealed against the radially internal surface 226 of the sleeve 208 to prevent compressible fluid from flowing out of the chamber 300. In particular, the mobile sleeve anchor tie rod seal system 120 can include at least one upper chamber ring seal 324 fixed to the radially external surface 322. of the upper chamber ring 314. As further detailed below, the sleeve 208 can be configured to move axially relative to the upper chamber ring 314. At least one upper chamber ring seal 324 can be configured to contact the radially internal surface 226 of the sleeve 208 to maintain a seal between the upper chamber ring 314 and the sleeve 208 when the sleeve 208 moves relative to the upper chamber ring 314.

[0022] Furthermore, the sleeve 208 may include the sleeve wall 318, which projects radially inward from the radially internal surface 226 of the sleeve 208 around the circumference of the sleeve 208. That is to say, the sleeve wall 318 may extend radially inward from the radially internal surface 226 of the sleeve 208 to form a ring around the radially internal sleeve surface 226. The sleeve wall 318 may be disposed adjacent to one end of the hole top 326 of the top end ring 204 in the insertion position. However, as detailed further below, the sleeve wall 318 can be configured to move in the axial direction up hole 308 to the stroke position (e.g., a position adjacent to the hole bottom surface 312 of the upper chamber ring 314) during tool operation.Furthermore, the sleeve wall 318 can extend radially inwards so that the sleeve wall 318 can provide a seal against the body part 200. In particular, a radially internal surface 330 of the sleeve wall 318 can be configured to provide a seal against the radially external surface 310 of the body part 200 via at least one sleeve wall seal 332 fixed to the radially internal surface 330 of the sleeve wall 318. The sleeve wall seal 332 is configured to contact the radially external surface 310 of the body part 200 to maintain a seal between the sleeve wall 318 and the body part 200 when the sleeve wall 318 moves along the body part 200.

[0023] Consequently, the chamber 300 can be completely sealed to prevent the compressible fluid from flowing out of the chamber 300 via the seal formed between the upper chamber ring 314 and the body part 200, the seal formed between the upper chamber ring 314 and the sleeve 208 and the seal between the sleeve wall 318 and the body part 200. Indeed, the hydrostatic assist chamber 300 can be sealed so that it maintains atmospheric pressure inside the chamber 300.

[0024] Due to the pressure difference between the borehole 104 and the hydrostatic assist chamber 300 (for example, the borehole pressure being greater than the pressure in the hydrostatic assist chamber 300), the forces Forces exerted on the hydrostatic assist chamber 300 can cause the sleeve 208 to move axially up the hole 308 relative to the body portion 200. In particular, the sleeve wall 318 of the sleeve 208 can be forced to move axially up the hole 308 toward the upper chamber ring 314 to reduce the volume of the hydrostatic assist chamber 300, thereby reducing the pressure differential. As noted above, this force is configured to assist the sleeve 208 in completing a full stroke from the insertion position to the stroke position. However, in the insertion position, at least one fastener 220 can restrict the axial movement of the sleeve 208 and the sleeve wall 318 relative to the body portion 200.The stress force from the pressure difference may be insufficient to shear at least one fastener 220 because the movable sleeve anchor tie rod joint system 120 has descended into the hole.

[0025] Figure 3B illustrates the movable sleeve anchor tie rod joint system 120 in the set position and the hydrostatic assist chamber 300 in the running position (for example, a position with the sleeve 208 displaced axially so that the sleeve 208 is completely offset axially from the inflatable material 202). In effect, the sleeve 208 can be positioned axially at the top of the hole at the upper end 302 of the inflatable material 202 in the running position so that the expansion of the inflatable material 202 is not restricted by the sleeve 208. As noted above, the inflatable material 202 is configured to expand in response to exposure to wellbore fluid. In the insertion position, the sleeve 208 prevents the wellbore fluid from contacting the inflatable material 202 so that the inflatable material 202 does not expand prematurely.However, in the running position, the inflatable material 202 is exposed to the borehole 104 so that the inflatable material 202 can react and expand to form a seal (e.g., an anchor bolt seal) at the lost column suspension device 112, the lost column 108 and / or the casing 102. As illustrated, the inflatable material 202 is expanded to form a seal against the lost column suspension device 112. Furthermore, with the inflatable material 202 sealed against the lost column suspension device 112, production fluid can be directed to flow from the lost column 108 to the lost column anchor bolt 116 via the movable sleeve anchor bolt seal system 120.

[0026] The sleeve 208 can move from the insertion position to the running position in response to the movable sleeve anchor tie rod joint system 120 engaging with the bottom hole element with an appropriate geometry (for example, the lost column suspension device 112, the lost column 108, etc.) in an adjustment position. As noted above, at least one fastener 220 may restrict the axial movement of the sleeve 208 and the sleeve wall 318 relative to the body portion 200 in the insertion position. Furthermore, the stress force generated by the pressure difference between the hydrostatic assist chamber 300 and the borehole 104 may be insufficient to shear at least one fastener 220 (e.g., the lower shear pin 224) when the movable sleeve anchor tie rod joint system 120 is lowered into the hole. However, in the adjustment position, the engagement between the sleeve 208 and the bottom-of-hole element (for example, the lost column suspension device 112) can be configured to shear at least one fastener 220 so that the sleeve 208 can move from the insertion position to the stroke position.In particular, when the tool (for example, the movable sleeve anchor tie rod joint system 120) moves axially down the hole towards the set position (as illustrated), the sleeve 208 first comes into contact with the upper surface 234 of the lost column suspension device 112 in a set position. Such contact with the lost column suspension device 112 can apply sufficient force to the sleeve 208 to shear at least one fastener 220 so that the hydrostatic assist chamber 300 can drive the sleeve 208 from the insertion position to the stroke position.

[0027] In particular, the contact between the sleeve 208 and the upper surface 234 of the lost column suspension device 112 can prevent the sleeve 208 from moving further in the axial downhole direction 236 relative to the lost column suspension device 112. However, the weight on the movable sleeve anchor tie rod joint system 120, at least part of the weight of the lost column anchor tie rod 116, can cause the body part 200, the inflatable material 202, the upper chamber ring 314 and the end rings 204, 206 of the movable sleeve anchor tie rod joint system 120 in the downhole direction relative to the lost column suspension device 112.Thus, the weight on the tool can shear at least one fastener 220 securing the sleeve 208 to the lower end ring 206 and / or the upper end ring 204, causing the sleeve 208 to detach from the lower end ring 206 and / or the upper end ring 204. With the sleeve 208 detached, the body part 200, the end rings 204, 206, and the inflatable material 202 can move axially down the hole relative to the sleeve 208 in the central bore of the lost column suspension device 238 of the lost column suspension device 112. When the body part 200 moves axially down the hole, continuous contact between the sleeve 208 and the lost column suspension device 112 can cause the sleeve 208 to move from the insertion position to the... stroke position. However, as noted above, the hydrostatic assist chamber 300 can help drive the sleeve 208 axially upward to a full stroke position. For example, as noted above, the inflatable material 202 may have an axial length greater than that of the polished bore receptacle 304 of the lost column suspension device 112. As such, the movable sleeve anchor tie rod joint system 120 may reach the bottom at the bottom end of the hole 306 of the lost column suspension device 112 before the sleeve 208 completes a full stroke. However, the hydrostatic assist chamber 300 can continue to drive the sleeve 208 axially upward, relative to the body portion 200, to the full stroke position.Alternatively, the hydrostatic assist chamber 300 can drive the sleeve 208 from the insertion position to the stroke position independently of the lost column suspension device 112 once at least one fastener 220 is sheared.

[0028] Furthermore, in the insertion position, the sleeve wall 318 of the sleeve 208 can be fixed in the insertion position (for example, in a position adjacent to the top end of the hole 326 of the top end ring 204). In response to shearing of at least one fastener 220, the sleeve 208 can be released to slide axially relative to the body portion 200, the top end ring 204, and the top chamber ring 314. With the sleeve 208 released, the stress force arising from the pressure difference between the hydrostatic assist chamber 300 and the borehole 104 can cause the sleeve wall 318 to move from the insertion position to the stroke position. As illustrated, the sleeve wall 318 can be positioned adjacent to the bottom hole surface 312 of the upper chamber ring 314 in the full stroke position.The hydrostatic assist chamber 300 can drive the sleeve wall 318 to move towards the upper chamber ring 314 until the pressure in the chamber 300 is equal to the wellbore pressure outside the chamber 300. However, due to the disparity of the pressure in the chamber 300 in the insertion position relative to the wellbore pressure, the full stroke position of the sleeve 208 can position the sleeve wall 318 close to the upper chamber ring 314 as illustrated.

[0029] Furthermore, the distance between the sleeve wall 318 in the insertion position and the upper chamber ring 314 can determine the stroke length of the sleeve 208. Consequently, the distance between the sleeve wall 318 in the insertion position and the upper chamber ring 314 can be greater than the axial length of the inflatable material 202 so that the sleeve 208 can be moved to a position completely offset axially with respect to the inflatable material 202. That is to say, the stroke length can be sufficient so that the sleeve 208 can be positioned axially at the top of the hole from the upper end 302 of the inflatable material 202 in the stroke position so that the expansion of the inflatable material 202 is not restricted by the sleeve 208.

[0030] Figures 4A to 4C illustrate cross-sectional views of a movable sleeve anchor rod joint system providing a seal against casing and a lost column suspension device, according to certain embodiments of this disclosure. In particular, [Fig. 4A] illustrates the movable sleeve anchor rod joint system 120 with a hydrostatic assist chamber 300 arranged in the insertion position. As stated above, the movable sleeve anchor tie rod joint system 120 comprises the body part 200 and an inflatable material 202 arranged around the circumference of the body part 200. In particular, the inflatable material 202 can be arranged between the upper end ring 204 and the lower end ring 206, which are each arranged around the body part 200. The upper end ring 204 can be positioned upstream of the lower end ring 206.Furthermore, the body portion 200 may include a hollow portion 400 (for example, an extension of the body portion 200 with a reduced external diameter). As illustrated, the upper end ring 204 and the lower end ring 206 may be fixed around the hollow portion 400. The hollow portion 400 may help to restrict the axial movement of the upper end ring 204 and the lower end ring 206. For example, an upper end 402 of the hollow portion 400 may contact the upper end ring 204 to restrict the axial movement at the top of the hole of the upper end ring 204, and a lower end 404 of the hollow portion 400 may contact the lower end ring 206 to restrict the axial movement at the bottom of the hole of the lower end ring 206.

[0031] Furthermore, the inflatable material 202 can be disposed around the hollow portion 400 in a position between the upper end ring 204 and the lower end ring 206. The upper end ring 204 and the lower end ring 206 can be configured to support the inflatable material 202 (for example, to restrict the axial movement of the inflatable material 202 relative to the body portion 200) when the movable sleeve anchor tie rod joint system 120 is lowered into the hole and fixed in the set position. As noted above, the inflatable material 202 can be configured to expand in response to exposure to wellbore fluids. The upper end ring 204 and the lower end ring 206 can restrict the expansion of the inflatable material 202 in axial directions so that the inflatable material 202 can expand further in a radial direction. However, as noted above, the movable sleeve anchor tie rod joint system 120 may also include the sleeve 208 configured to isolate the inflatable material 202 from the wellbore fluid in the insertion position in order to prevent the inflatable material 202 from expanding prematurely in the wellbore 104.

[0032] The sleeve 208 may have a tubular shape that is arranged around the inflatable material 202 in the insertion position. Furthermore, the sleeve 208 may be arranged around the lower end ring 206, the upper end ring 204, and a lower chamber ring 406. As illustrated, an upper portion 408 of the sleeve 208 may be attached to the lower chamber ring 406. More specifically, a radially internal surface 410 of the upper portion 408 of the sleeve 208 may be attached to the radially external surface 412 of the lower chamber ring 406 via at least one set screw 414, or any other suitable fastener, to rigidly fix the sleeve 208 to the lower chamber ring 406. In addition, a lower portion 416 of the sleeve 208 may be attached to the lower end ring 206.More specifically, a radially internal surface 418 of the lower portion 416 of the sleeve 208 can be fixed to the radially external surface 228 of the lower end ring 206 via at least one shearable element 420 (for example, the lower shear pin 224) to rigidly fix the sleeve 208 to the lower end ring 206 in the insertion position. The lower end ring 206 can also be rigidly fixed to the body portion 200 so that the movement of the sleeve 208, relative to the body portion 200, is restricted in the insertion position.Furthermore, the upper part 408 of the sleeve 208 can be sealed against the lower chamber ring 406 via an upper enclosure seal 422, the lower part 416 of the sleeve 208 can be sealed against the lower end ring 206 via an external lower enclosure seal 424, the lower chamber ring 406 can be sealed against the body part 200 via a lower chamber seal 426, and the lower end ring 206 can be sealed against the hollowed-out part 400 via an internal lower enclosure seal 428 so that the inflatable material 202 can be isolated / sealed from the wellbore fluid in the insertion position.

[0033] However, as described in more detail below, the sleeve 208 can be moved axially upwards into the set position so that the inflatable material 202 can be exposed to wellbore fluids at a desired location in the wellbore 104. The lower end 216 of the sleeve 208 can be configured to engage with the downhole element having a suitable geometry (e.g., the lost column suspension device 112, the lost column 108, etc.) in the set position. For example, the end The lower end 216 of the sleeve 208 can extend axially into the bottom of the hole from the lower end ring 206 in the insertion position so that the lost column suspension device 112 can engage with the sleeve 208 before the lower end ring 206 rests on the lost column suspension device 112. Such engagement between the sleeve 208 and the lost column suspension device 112 can shear at least one shearable element 420 (for example, the lower shear pin 224) so ​​that the sleeve 208 can move from the insertion position to the stroke position.

[0034] In addition, the hydrostatic assist chamber 300 is configured to provide a squeezing force to assist in completing a full stroke of the sleeve 208 from an insertion position to a stroke position. Alternatively, or in addition, the movable sleeve anchor tie rod joint system 120 may include a squeezing mechanism (e.g., springs, mechanical actuators, etc.) to assist in completing a full stroke of the sleeve 208. Furthermore, the hydrostatic assist chamber 300 is configured to assist in completing a full stroke of the sleeve 208 such that the lower end 216 of the sleeve 208 is offset from one position radially outward and aligned axially with the inflatable material 202 (e.g., the insertion position) to a position axially at the top of the hole from the upper end 302 of the inflatable material 202 (e.g., the stroke position).The hydrostatic assist chamber 300 can be configured to drive the sleeve 208 axially upwards, relative to the body part 200, to the full stroke position in response to the shearing of at least one shearable element 420 (for example, at least one lower shear pin 224). Furthermore, after at least one shearable element 420 has been sheared, the hydrostatic assist chamber 300 can be configured to perform a full stroke of the sleeve 208 without additional forces generated by contact between the sleeve 208 and the lost column suspension device 112.

[0035] The hydrostatic assist chamber 300 includes a chamber 300 for containing a compressible fluid (e.g., air) at atmospheric pressure. As illustrated, the chamber 300 can be arranged axially above the inflatable material 202 and radially between a chamber sleeve 430 and the body part 200. For example, the chamber 300 can be defined by a radially internal surface 432 of the chamber sleeve 430, the radially external surface 310 of the body part 200, the bottom surface 312 of an upper chamber ring 314, and a top surface 434 of the lower chamber ring 406. The upper chamber ring 314 can have a hollow cylindrical shape and can be arranged around the body part 200 in an axially top-of-hole position. relative to the upper end ring 204, the upper chamber ring 314 can be rigidly fixed to the body part 200 so that the upper chamber ring 314 maintains a fixed distance from the upper end ring 204 during operation. Furthermore, the radially internal surface 320 of the upper chamber ring 314 can be fixed against the radially external surface 310 of the body part 200 so that the upper chamber ring 314 is sealed against the body part 200 to prevent compressible fluid from flowing out of the chamber 300. Additionally, the radially external surface 322 of the upper chamber ring 314 can be sealed against the radially internal surface 432 of the chamber sleeve 430 to prevent compressible fluid from flowing out of the chamber 300.In particular, at least one upper chamber ring seal 324 can be fixed to the radially external surface 322 of the upper chamber ring 314, and at least one upper chamber ring seal 324 can be configured to contact the radially internal surface 432 of the chamber sleeve 430 to maintain a seal between the upper chamber ring 314 and the chamber sleeve 430 when the chamber sleeve 430 moves relative to the upper chamber ring 314.

[0036] The chamber sleeve 430 can be rigidly fixed and sealed against the lower chamber ring 406. In particular, at least the radially internal surface 432 of the chamber sleeve 430 can be rigidly fixed to and sealed against a radially external surface 412 of the lower chamber ring 406 to prevent compressible fluid from flowing out of the chamber 300. Furthermore, the sleeve 208 can be rigidly fixed to the lower chamber ring 406. Thus, the movement of the sleeve 208 via contact with the lost column suspension device 112 can cause the movement of the lower chamber ring 406 and the chamber sleeve 430. In addition, the lower chamber ring 406 can include a hollow cylindrical shape that is disposed around the body portion 200. Moreover, the lower chamber ring 406 can be disposed adjacent to the upper end of the hole 326 of the ring upper end 204 in insertion position.However, the lower chamber ring 406 can be configured to move axially up the hole 308 to the stroke position (for example, a position adjacent to a hole bottom surface 312 of the upper chamber ring 314) during tool operation. Furthermore, the lower chamber ring 406 can be sealed against the body part 200. That is, a radially internal surface 436 of the lower chamber ring 406 can be configured to provide a seal against the radially external surface 310 of the body part 200 via at least one lower chamber seal 426 fixed to the radially internal surface 436 of the lower chamber ring 406. The seal of... lower chamber 426 is configured to come into contact with the radially external surface 310 of the body part 200 to maintain a seal between the lower chamber ring 406 and the body part 200 when the lower chamber ring 406 moves along the body part 200 to prevent compressible fluid from flowing out of the chamber 300.

[0037] Consequently, the chamber 300 can be completely sealed to prevent the compressible fluid from flowing out of the chamber 300 via the seal formed between the upper chamber ring 314 and the body part 200, the seal formed between the upper chamber ring 314 and the chamber sleeve 430, the seal formed between the chamber sleeve 430 and the lower chamber ring 406, and the seal formed between the lower chamber ring 406 and the body part 200. In effect, the hydrostatic assist chamber 300 can be sealed so that it maintains atmospheric pressure inside the chamber 300.

[0038] Due to the pressure difference between the borehole 104 and the hydrostatic assist chamber 300 (for example, the borehole pressure being greater than the pressure in the hydrostatic assist chamber 300), the forces exerted on the hydrostatic assist chamber 300 can cause the lower chamber ring 406 to move axially up-hole 308 relative to the body portion 200. In particular, the lower chamber ring 406 can be caused to move axially up-hole 308 toward the upper chamber ring 314 to reduce the volume of the hydrostatic assist chamber 300, thereby reducing the pressure difference. Since the sleeve 208 is rigidly fixed to the lower chamber ring 406, this stressing force is configured to assist the sleeve 208 in completing a full stroke from the insertion position to the stroke position.However, in the insertion position, at least one shearable element 420 may restrict the axial movement of the sleeve 208 and the lower chamber ring 406 relative to the body part 200. The stress force from the pressure difference may be insufficient to shear at least one shearable element 420 when the movable sleeve anchor tie rod joint system 120 is lowered into the hole.

[0039] Figure 4B illustrates the movable sleeve anchor rod seal system 120 in the adjustment position and the hydrostatic assist chamber 300 in the insertion position. As illustrated, the movable sleeve anchor rod seal system 120 may include a sealing assembly 438 extending from a bottom-of-hole end 440 of the body portion 200. The sealing assembly 438 may have a tubular shape with a diameter larger than the body portion 200. In particular, the diameter of a radially external surface 442 of the sealing assembly 438 may be substantially similar to the diameter of the radially external surface internal 444 of the lost column suspension device 112 so that the sealing assembly 438 can be sealed against the radially internal surface 444 of the lost column suspension device 112. In addition, the sealing assembly 438 may include a plurality of seals 446 fixed to the radially external surface 442 of the sealing assembly 438. Indeed, as illustrated, the sealing assembly 438 can be inserted into the central bore of the lost column suspension device 238 of the lost column suspension device 112 in the adjustment position so that the plurality of seals 446 can seal the sealing assembly 438 against the lost column suspension device 112. With the sealing assembly 438 sealed against the lost column suspension device 112, the production fluid flowing from the lost column 108 can flow into the anchor tie rod of lost column 116 without leaking into borehole 104.

[0040] Furthermore, the sleeve 208 can be configured to engage with the lost column suspension device 112 in the adjustment position. The sleeve 208 can move from the insertion position to the stroke position in response to the movable sleeve anchor tie rod joint system 120 engaging with the lost column suspension device 112 in an adjustment position. As noted above, at least one shearable element 420 (for example, the lower shear pin 224) can restrict the axial movement of the sleeve 208 and the lower chamber ring 406 relative to the body portion 200 in the insertion position. In addition, the stress force generated by the pressure difference between the hydrostatic assist chamber 300 and the borehole 104 may be insufficient to shear at least one shearable element 420 when the movable sleeve anchor tie rod joint system 120 is lowered into the hole.However, in the setting position, the engagement between the sleeve 208 and the lost column suspension device 112 can be configured to shear at least one shearable element 420, allowing the sleeve 208 to move from the insertion position to the stroke position. Specifically, when the tool (e.g., the movable sleeve anchor tie rod joint system 120) moves axially down the hole to the set position, the lower end 216 of the sleeve 208 first contacts the upper surface 234 of the lost column suspension device 112 in the setting position. This contact with the lost column suspension device 112 can apply sufficient force for the sleeve 208 to shear at least one shearable element 420.With at least one shearable element 420 sheared, the stress force from the hydrostatic assist chamber can drive the sleeve 208 from the insertion position to the stroke position.

[0041] In particular, contact between the sleeve 208 and the top of the lost column suspension device 112 can prevent the sleeve 208 from moving further in the axial downhole direction 236 relative to the lost column suspension device 112. However, the weight on the movable sleeve anchor tie rod joint system 120, at least part of the weight of the lost column anchor tie rod 116, can cause the body portion 200, the inflatable material 202, the lower end ring 206, the upper end ring 204, and the upper chamber ring 314 of the movable sleeve anchor tie rod joint system 120 in the axial downhole direction 236 relative to the lost column suspension device 112. As such, the weight on the tool can shear the at least one shearable element 420 securing the sleeve 208 to the lower end ring 206 so that the sleeve 208 detaches from the lower end ring 206.

[0042] Figure 4C illustrates the movable sleeve anchor tie rod joint system 120 in the set position and the hydrostatic assist chamber 300 in the running position (for example, a position in which the sleeve is axially offset so that the sleeve 208 is completely axially offset from the inflatable material 202). In effect, the sleeve 208 can be positioned axially at the top of the hole at the upper end 302 of the inflatable material 202 in the running position so that the expansion of the inflatable material 202 is not restricted by the sleeve 208. As noted above, the inflatable material 202 is configured to expand in response to exposure to wellbore fluid. In the insertion position, the sleeve 208 prevents the wellbore fluid from contacting the inflatable material 202 so that the inflatable material 202 does not expand prematurely.However, in the running position, the inflatable material 202 is exposed to the borehole 104 so that the inflatable material 202 can react and expand to form a seal (e.g., an anchor bolt seal) against the lost column suspension device 112, the lost column 108 and / or the casing 102. As illustrated, the inflatable material 202 is expanded to form a seal against the casing 102. Furthermore, with the inflatable material 202 sealed against the casing 102 and the sealing assembly 438 sealed against the lost column suspension device 112, the production fluid can be directed to flow from the lost column 108 to the lost column anchor bolt 116 via the movable sleeve anchor bolt seal system 120.

[0043] Furthermore, as indicated above, at least one shearable element 420 (for example, the lower shear pin 224) securing the sleeve 208 to the lower end ring 206 can be sheared in the adjustment position so that the sleeve 208 detaches from the lower end ring 206. With the sleeve 208 detached, the body part 200, the upper chamber ring 314, the lower end ring 206, the upper end ring 204, and the material The inflatable material 202 can move axially relative to the sleeve 208 in the central bore of the lost column suspension device 238 of the lost column suspension device 112 until the lower end ring 206 rests on the upper surface 234 of the lost column suspension device 112. Alternatively, the engagement of the sealing assembly 438 with the radially internal surface 444 of the lost column suspension device 112 and / or the expansion of the inflatable material 202 can adjust the movable sleeve anchor tie rod seal system 120 before the lower end ring 206 rests on the lost column suspension device 112. Furthermore, once at least one shearable element 420 is sheared and the sleeve 208 is released, the hydrostatic assist chamber 300 can drive the sleeve 208 axially upwards. until the full racing position.Indeed, the hydrostatic assistance chamber 300 can drive the sleeve 208 from the insertion position to the stroke position independently of other loading forces.

[0044] In the insertion position, the lower chamber ring 406 of the sleeve 208 can be fixed in a position adjacent to the top end of the borehole 326 of the upper end ring 204. In response to shearing of at least one shearable element 420, the sleeve 208 can be released to slide axially relative to the upper chamber ring 314. Since the lower chamber ring 406 is rigidly fixed to the sleeve 208, the lower chamber ring 406 can also be released to slide axially relative to the upper chamber ring 314 in response to shearing of at least one shearable element 420. When the lower chamber ring 406 is released, the stress force arising from the pressure difference between the hydrostatic assist chamber 300 and the borehole 104 can cause the lower chamber ring 406 to to move from the insertion position to the racing position.As illustrated, the lower chamber ring 406 can be positioned adjacent to the bottom-hole surface 312 of the upper chamber ring 314 in the full-stroke position. The hydrostatic assist chamber 300 can drive the lower chamber ring 406 towards the upper chamber ring 314 until the pressure in chamber 300 equals the wellbore pressure outside chamber 300. However, due to the pressure disparity in chamber 300 in the insertion position compared to the wellbore pressure, the full-stroke position of the lower chamber ring 406 can position the lower chamber ring 406 close to the upper chamber ring 314, as illustrated.

[0045] Furthermore, the distance between the lower chamber ring 406 in the insertion position and the upper chamber ring 314 can determine the stroke length of the sleeve 208. Consequently, the distance between the lower chamber ring 406 in the insertion position and the upper chamber ring 314 can be greater than the axial length of the inflatable material 202 so that the sleeve 208 can be moved to a position completely offset axially with respect to the inflatable material 202. That is to say, the stroke length can be sufficient so that the sleeve 208 can be positioned axially at the top of the hole from the upper end 302 of the inflatable material 202 in the stroke position so that the expansion of the inflatable material 202 is not restricted by the sleeve 208.

[0046] Therefore, the present disclosure can provide a movable sleeve anchor tie rod joint system configured to form a joint with a corresponding lost column by axially moving a sleeve in response to contact with a lost column suspension device so that an inflatable material can expand to form the joint.

[0047] Statement 1. A movable sleeve anchor tie rod joint system, comprising: a body part; an inflatable material disposed around a circumference of the body part, in which the inflatable material is configured to expand in response to exposure to wellbore fluids; an upper end ring disposed around the body part in an axially above position of the inflatable material; a lower end ring disposed around the body part in an axially below position of the inflatable material;and a sleeve disposed radially outward from the inflatable material and sealed against the upper end ring and / or the lower end ring in an insertion position to isolate the inflatable material from wellbore fluids, wherein the sleeve is configured to come into contact with a downhole element in an adjustment position, and wherein the contact with the downhole element is configured to displace the sleeve to expose the inflatable material to wellbore fluids so that the inflatable material expands to provide a seal against a tubular downhole element.

[0048] Statement 2. The movable sleeve anchor tie rod joint system according to statement 1, wherein the bottom hole element includes a lost column suspension device.

[0049] Statement 3. The movable sleeve anchor tie rod joint system according to Statement 1 or Statement 2, wherein the inflatable material is configured to react chemically with wellbore fluids, and wherein the chemical reaction causes the inflatable material to expand.

[0050] Statement 4. The movable sleeve anchor tie rod joint system according to Statement 1 or Statement 2, wherein the inflatable material is configured to absorb a portion of the wellbore fluids, and wherein the absorption of the portion of the wellbore fluids is configured to cause the inflatable material to expand.

[0051] Statement 5. The movable sleeve anchor tie rod joint system according to any preceding statement, further comprising at least one joint disposed between the sleeve and the upper end ring and / or the lower end ring in the insertion position.

[0052] Statement 6. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein a distal end of the sleeve is configured to extend axially downhole from the lower end ring in the insertion position.

[0053] Statement 7. The movable sleeve anchor tie rod joint system according to a any preceding statement, in which the sleeve is fixed to the upper end ring and / or the lower end ring in the insertion position via at least one fastener.

[0054] Statement 8. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein at least one fastener comprises at least one shear pin.

[0055] Statement 9. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein the contact between a distal end of the sleeve and the downhole element in the setting position is configured to shear at least one fastener in order to release the sleeve to move relative to the upper end ring and / or the lower end ring in response to movement of the body part relative to the downhole element.

[0056] Statement 10. The movable sleeve anchor tie rod joint system according to any preceding statement, further comprising a hydrostatic assist chamber configured to drive the sleeve axially upward relative to the body part and / or the bottom hole element to a set position.

[0057] Statement 11. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein the hydrostatic assist chamber is formed between a radially external surface of the body part, a radially internal surface of a chamber sleeve, an upper chamber ring and a lower chamber ring.

[0058] Statement 12. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein the chamber sleeve is rigidly fixed to the lower chamber ring, and wherein the chamber sleeve and the lower chamber ring are configured to move axially relative to the upper chamber ring.

[0059] Statement 13. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein the hydrostatic assist chamber is configured to contain a compressible fluid at atmospheric pressure in position insertion, in which a pressure difference between the hydrostatic assist chamber and the wellbore is configured to stress the lower chamber ring axially towards the upper chamber ring.

[0060] Statement 14. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein an upper part of the sleeve is fixed to the lower chamber ring, wherein a lower part of the sleeve is fixed to the lower end ring via a fastener in the insertion position, and wherein the lower end ring is rigidly fixed to the body part so that movement of the lower chamber ring towards the upper chamber ring is restricted in the insertion position.

[0061] Statement 15. The movable sleeve anchor tie joint system according to any preceding statement, further comprising a stressing mechanism configured to drive the sleeve axially upwards relative to the body part and / or the bottom hole element to a set position.

[0062] Statement 16. The movable sleeve anchor tie rod joint system according to any preceding statement, wherein the inflatable material expands to provide a seal against the downhole tubular element, and wherein the downhole tubular element comprises a lost column, a lost column suspension device, a polished bore receptacle, a casing or a combination thereof.

[0063] Statement 17. A movable sleeve anchor tie rod joint system, comprising: a body portion; an inflatable material disposed around a circumference of the body portion, wherein the inflatable material is configured to expand in response to exposure to wellbore fluids; an upper end ring disposed around the body portion in a position axially above the inflatable material; a lower end ring disposed around the body portion in a position axially below the inflatable material, wherein the upper end ring and the lower end ring are configured to restrict the axial expansion of the inflatable material; a lower chamber ring disposed around the body portion in a position axially above the lower end ring;an upper chamber ring disposed around the body portion in a position axially above the lower chamber ring; a sleeve fixed and sealed against the lower end ring and the lower chamber ring in an insertion position to isolate the inflatable material from wellbore fluids, wherein the sleeve is fixed to the lower end ring via at least one shearable element, wherein the sleeve is configured to come into contact with a lost column suspension device in an adjustment position, and wherein the contact with the lost column suspension device is configured; to shear at least one shearable element in order to release the sleeve and lower chamber ring to move and expose the inflatable material to wellbore fluids;a hydrostatic assist chamber formed between a radially external surface of the body part, a radially internal surface of a chamber sleeve, the lower chamber ring and the upper chamber ring, wherein the hydrostatic assist chamber is configured to contain a compressible fluid at atmospheric pressure in the insertion position, and wherein a pressure difference between the hydrostatic assist chamber and the wellbore is configured to drive the lower chamber ring axially towards the upper chamber ring and move the sleeve axially upward relative to the body part and the lost column suspension device to a set position, wherein the set position is axially offset relative to the inflatable material.

[0064] Statement 18. The movable sleeve anchor tie rod joint system according to statement 17, wherein the inflatable material is configured to react chemically with wellbore fluids, and wherein the chemical reaction causes the inflatable material to expand.

[0065] Statement 19. The movable sleeve anchor tie rod joint system according to Statement 17 or Statement 18, wherein the inflatable material is configured to absorb a portion of the wellbore fluids, and wherein the absorption of the portion of the wellbore fluids is configured to cause the inflatable material to expand.

[0066] Statement 20. Method, comprising: the insertion of a movable sleeve anchor tie rod joint system into a borehole towards a lost column suspension device, wherein the movable sleeve anchor tie rod joint system comprises a body part, an inflatable material disposed around a circumference of the body part and configured to expand in response to exposure to borehole fluids, and a sleeve configured to isolate the inflatable material from borehole fluids in an insertion position; driving the sleeve into the lost column suspension device to shear at least one fastener holding the sleeve in the insertion position; moving the sleeve relative to the body part, via a hydrostatic assist chamber, from the insertion position to a position set in response to the shearing of at least one fastener;and the expansion of the inflatable material to ensure a seal against a downhole tubular element in response to the movement of the sleeve exposing the inflatable material to wellbore fluids.

[0067] Consequently, the present embodiments are well suited to achieving the aforementioned objectives and advantages, as well as those inherent therein. The particular embodiments disclosed above are merely illustrative, as the present embodiments can be modified and implemented in different but equivalent ways that will become obvious to a person skilled in the art who benefits from the teachings contained herein. Although individual embodiments are discussed, all combinations of each embodiment are contemplated and covered by the disclosure. Furthermore, no limitations are foreseen for the details of development or design provided herein, other than those described in the claims below. Moreover, the terms of the claims have a simple and ordinary meaning, unless otherwise explicitly and clearly defined by the patent holder.It is therefore evident that the particular illustrative embodiments disclosed above may be changed or modified and that all such variations are considered within the scope and spirit of this disclosure.

Claims

Demands

1. A movable sleeve anchor tie rod joint system (120), comprising: a body portion (200); an inflatable material (202) disposed around a circumference of the body portion, in which the inflatable material is configured to expand in response to exposure to wellbore fluids; an upper end ring (204) disposed around the body portion in a position axially above the inflatable material; a lower end ring (206) disposed around the body portion in a position axially below the inflatable material;and a sleeve (208) disposed radially outward from the inflatable material and sealed against the upper end ring and / or the lower end ring in an insertion position to isolate the inflatable material from wellbore fluids, wherein the sleeve is configured to come into contact with a downhole element in an adjustment position, and wherein the contact with the downhole element is configured to move the sleeve to expose the inflatable material to wellbore fluids so that the inflatable material expands to provide a seal against a tubular downhole element, wherein the sleeve is attached to the upper end ring and / or the lower end ring in the insertion position via at least one fastener.

2. Movable sleeve anchor tie rod joint system according to claim 1, wherein the bottom hole element includes a lost column suspension device (112).

3. A movable sleeve anchor tie rod joint system according to claim 1 or claim 2, wherein the inflatable material is configured to react chemically with wellbore fluids, and wherein the chemical reaction causes the inflatable material to expand.

4. A movable sleeve anchor tie rod joint system according to claim 1 or claim 2, wherein the material inflatable is configured to absorb a portion of the wellbore fluids, and in which the absorption of the portion of the wellbore fluids is configured to cause the inflatable material to expand.

5. A movable sleeve anchor tie rod joint system according to any prior claim, further comprising at least one joint disposed between the sleeve and the upper end ring and / or the lower end ring in the insertion position; and / or wherein the upper end ring and the lower end ring are configured to restrict the axial expansion of the inflatable material.

6. Movable sleeve anchor tie rod joint system according to any prior claim, wherein a distal end of the sleeve is configured to extend axially into the bottom of the hole from the lower end ring in the insertion position.

7. A movable sleeve anchor tie rod joint system according to any prior claim, wherein the contact between a distal end of the sleeve and the downhole element in the setting position is configured to shear at least one fastener in order to release the sleeve to move relative to the upper end ring and / or the lower end ring in response to movement of the body part relative to the downhole element.

8. Movable sleeve anchor tie rod joint system according to any prior claim, wherein at least one fastener comprises at least one shear pin.

9. A movable sleeve anchor tie rod joint system according to any prior claim, further comprising a hydrostatic assist chamber (300) configured to drive the sleeve axially upward relative to the body part and / or the bottom-of-hole element to a set position; and / or wherein the set position is axially offset relative to the inflatable material.

10. A movable sleeve anchor tie rod joint system according to the preceding claim, wherein the hydrostatic assist chamber is formed between a radially external surface of the body part, a radially internal surface of a sleeve of chamber, an upper chamber ring and a lower chamber ring; and / or wherein the lower chamber ring is disposed around the body portion in an axial position above the lower end ring and the upper chamber ring is disposed around the body portion in an axial position above the lower chamber ring; and / or wherein the sleeve is fixed to the lower end ring and the lower chamber ring in the insertion position to isolate the inflatable material from wellbore fluids.

11. A movable sleeve anchor tie rod joint system according to the preceding claim, wherein the chamber sleeve is rigidly fixed to the lower chamber ring, and wherein the chamber sleeve and the lower chamber ring are configured to move axially relative to the upper chamber ring.

12. A movable sleeve anchor tie rod joint system according to claim 10 or claim 11, wherein the hydrostatic assist chamber is configured to contain a compressible fluid at atmospheric pressure in the insertion position, wherein a pressure difference between the hydrostatic assist chamber and the wellbore is configured to stress the lower chamber ring axially towards the upper chamber ring; and / or wherein an upper portion of the sleeve is fixed to the lower chamber ring, wherein a lower portion of the sleeve is fixed to the lower end ring via a fastener in the insertion position, and wherein the lower end ring is rigidly fixed to the body portion so that movement of the lower chamber ring towards the upper chamber ring is restricted in the insertion position.

13. Movable sleeve anchor tie joint system according to any prior claim, further comprising a stressing mechanism configured to drive the sleeve axially upward relative to the body part and / or the bottom hole element to a set position.

14. A movable sleeve anchor tie rod seal system according to any prior claim, wherein the inflatable material expands to provide a seal against the bottom bore tubular element, and wherein the bottom bore tubular element hole includes a lost column, a lost column suspension device, a polished bore receptacle, a casing or a combination thereof.

15. A method for ensuring a seal, comprising: inserting a movable sleeve anchor tie rod seal system (120) according to any one of claims 1 to 14, into a borehole towards a lost column suspension device (112); driving the sleeve into the lost column suspension device to shear at least one fastener holding the sleeve in the insertion position; moving the sleeve relative to the body portion, via a hydrostatic assist chamber (300), from the insertion position to a position set in response to the shearing of at least one fastener; and expanding the inflatable material to ensure a seal against a downhole tubular element in response to the movement of the sleeve exposing the inflatable material to borehole fluids.

Images