Patent Application
20240167352
This disclosure relates to woven sleeves, such as fabric or other woven sleeves constructed to limit an outer diameter of an interiorly disposed well tool.
Downhole well tools can be designed to expand radially outward within a wellbore to carry out their operational functions. In some examples, a downhole well tool may experience undesirable over-expansion in a radial direction due to the action of an inflatable packer or another expandable device. In some examples, the downhole well tool may experience undesirable uneven expansion in a radial direction along a length of the downhole tool. Both undesirable effects can negatively affect the accuracy and reliability of a performance of the well tool.
This disclosure relates to woven sleeves, such as fabric woven sleeves constructed to limit an outer diameter of an interiorly disposed well tool that is capable of expanding radially outward within the woven sleeve.
In one aspect, a woven sleeve includes a tubular member that includes circumferentially oriented fibers and axially oriented fibers. The tubular member is configured to adjust between a relaxed state in which the tubular member is positioned around a well tool and an extended state in which the tubular member is in tight contact with an outer surface of the well tool across substantially an entire inner surface of the tubular member to limit an extent to which the well tool can expand radially outward.
Embodiments may provide one or more of the following features.
In some embodiments, the woven sleeve includes a fabric material.
In some embodiments, a first combined weight of the circumferentially oriented fibers is greater than a second combined weight of the axially oriented fibers.
In some embodiments, the circumferentially oriented fibers and the axially oriented fibers are made of one or both of natural fibers and synthetic fibers.
In some embodiments, the tubular member includes a unitary tube.
In some embodiments, the tubular member includes multiple tubes.
In some embodiments, the multiple tubes are spaced apart axially.
In some embodiments, two or more of the multiple tubes overlap at least partially.
In some embodiments, the woven sleeve has a specific weight of about 200 g/m2 to about 800 g/m2.
In some embodiments, the woven sleeve is configured to impose a substantially constant diameter on the well tool along a length of the well tool.
In some embodiments, the woven sleeve further comprises one or more fixation bands positioned along a length of the tubular member.
In some embodiments, the tubular member has a folded configuration.
In another aspect, a downhole system includes a well tool and a tubular woven sleeve surrounding the well tool. The tubular woven sleeve includes circumferentially oriented fibers and axially oriented fibers. The tubular woven sleeve is configured to adjust between a relaxed state in which the tubular woven sleeve is positioned around the well tool and an extended state in which the tubular woven sleeve is in tight contact with an outer surface of the well tool across substantially an entire inner surface of the tubular woven sleeve to limit an extent to which the well tool can expand radially outward.
In another aspect, a method of constraining a well tool includes placing a tubular woven sleeve around the well tool, expanding the well tool radially outward towards an inner surface of the tubular woven sleeve, creating contact between the well tool and the tubular woven sleeve across substantially an entire area of the inner surface of the tubular woven sleeve, and limiting an extent to which the well tool can expand radially outward to a maximally extended internal diameter of the tubular woven sleeve.
Embodiments may provide one or more of the following features.
In some embodiments, the method further includes imposing a substantially constant diameter on the well tool along a length of the well tool.
In some embodiments, the method further includes folding the tubular woven sleeve upon itself against the well tool.
In some embodiments, the method further includes reinforcing the contact between the well tool and the tubular woven sleeve.
In some embodiments, the tubular woven sleeve includes a fabric material.
In some embodiments, the tubular woven sleeve is made of one or both of natural fibers and synthetic fibers.
In some embodiments, the woven sleeve has a specific weight of about 200 g/m2 to about 800 g/m2.
The details of one or more embodiments are set forth in the accompanying drawings and description. Other features, aspects, and advantages of the embodiments will become apparent from the description, drawings, and claims.
In some embodiments, the woven sleeve 100 is formed substantially as a tube 102 and is advantageously designed to limit an extent to which the well tool 101 can radially expand. In some embodiments, the tube 102 of the woven sleeve 100 may be constructed as a single piece of material. In other embodiments, the tube 102 of the woven sleeve 100 may be constructed of two or more separate pieces of material that are arranged axially. The multiple pieces may be spaced axially apart or may be arranged in a configuration in which they partially or fully overlap. In some embodiments, the multiple pieces may vary by one or more characteristics from one another, such as being made of different materials, having different material weights, and having different weave patterns.
Referring to
By constraining the diameter of the well tool 101, the woven sleeve 100 advantageously imposes an overall, substantially constant (e.g., consistent) outer diameter among multiple portions of the tubular section 103 that may otherwise expand to different diameters as a result of uneven expansion along the expansion device 105. In some examples, limiting the extent to which the well tool 101 can expand radially also limits a rate at which the well tool 101 can expand radially. For example, in some embodiments, as the contact force between the woven sleeve 100 and the well tool 101 increases, the rate at which the well tool 101 expands radially decreases. In some examples, the well tool 101 may be expanded to a diameter between the first diameter d and the second diameter D that corresponds to intermediate states of both the well tool 101 and the woven sleeve 100. Limiting the extent to which the well tool 101 can radially expand and doing so in a manner that achieves a substantially constant diameter of the well tool 101 in the expanded state can improve the performance of the well tool 101 with respect to both accuracy and reliability.
In some embodiments, the woven sleeve 100 is manufactured via a weaving process or a spinning process. In some embodiments, the woven sleeve 100 is made of one or more fabric materials. In some embodiments, the woven sleeve 100 (e.g., the tube 102) is made of one or both of natural and synthetic fibers that are made of one or more materials, such as aramid fibers, polyester, cotton, polyamide, glass, carbon, steel, and metal. In some embodiments, the woven sleeve 100 may be constructed in a way that maximizes its radial strength (e.g., hoop stress limit). For example, in some embodiments, circumferentially oriented fibers of the woven sleeve 100 account for a larger portion of a material weight of the woven sleeve 100 than do the axially oriented fibers of the woven sleeve 100. In some embodiments, the circumferentially oriented fibers and the axially oriented fibers may be made of different materials to achieve an optimal sleeve design. In some embodiments, the woven sleeve 100 may also be made of one or more hardening or curing compounds, such as epoxy, silicone, or another similar substance.
In some embodiments, the internal diameter of the woven sleeve 100 can increase from an initial width or diameter in the relaxed state to a final diameter in the maximally extended state by up to about 3% of the initial width or diameter. In some embodiments, the woven sleeve 100 can achieve a maximum extended internal diameter of about 9 centimeters (cm) to about 11 cm. In some embodiments, the woven sleeve 100 has a thickness of about 0.1 millimeters (mm) to about 3 mm. In some embodiments, the woven sleeve 100 has a length of about 10 cm to about 200 cm. In some embodiments, the woven sleeve 100 has a specific weight of about 200 grams per meter squared (g/m2) to about 800 g/m2. In some embodiments, the woven sleeve 100 has a fiber tenacity of about 1,000 meter·Newton per tex (mN/tex) to about 3,500 mN/tex, where 1 tex equals 1 gram per 1,000 m of textile material. In some embodiments, an example woven sleeve 100 has a width of about 155 mm, a warp of about 5 threads/cm, a deci-tex (dtex, where 1 dtex equals 1 gram per 10,000 m of textile material) of about 1.1 with polyester, a weft of about 12.5 threads/cm, a dtex of about 1.6 with aramid polymer, a specific weight of about 400 g/m2, and a plain weave.
In some embodiments, in installing the woven sleeve 100 to the tubular section 103, the tube 102 is initially placed around the tubular section 103 in a loose configuration (e.g., with a gap or some slack between at least a portion of the inner surface of the tube 102 and at least a portion of the outer surface of the tubular section 103). In some embodiments, excess material of the tube 102 may then be folded upon itself against the tube 102 to position the tube 102 against the tubular section 103 with additional contact. Referring to
Referring to
While the woven sleeve 100 has been described and illustrated with respect to certain dimensions, sizes, shapes, arrangements, materials, well tools 101, and methods 200, in some embodiments, a woven sleeve that is otherwise substantially similar in construction and function to the woven sleeve 100 may include one or more different dimensions, sizes, shapes, arrangements, configurations, and materials or may be utilized with different well tools or according to different methods. For example, in some embodiments, a woven sleeve 100 that is otherwise substantially similar in construction and function to the woven sleeve 100 may generally be made of any spun material (e.g., steel wires or another spun material construction).
Accordingly, other embodiments are also within the scope of the following claims.
