| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166207000 | Expansible casing | 28 |
| 20080257542 | Low Carbon Steel Expandable Tubular - A low carbon steel expandable tubular ( | 10-23-2008 |
| 20080289814 | Solid Expandable Tubular Members Formed From Very Low Carbon Steel and Method - A very low carbon steel alloy is provided for use in manufacturing tubular members such as oil country tubular goods. The tubular members may be radially expanded from at least twenty percent to forty percent. Sections or joints of casing formed from the steel alloy may be installed within a wellbore and radially expanded during completion of the wellbore. | 11-27-2008 |
| 20090014172 | Apparatus and Methods for Drilling and Lining a Wellbore - A method of drilling and lining a wellbore includes operably coupling a support member to a drilling device, an expansion cone configured to expand a tubular member, an actuator configured to pull the expansion cone through the tubular member, a releasable locking device configured to limit displacement of the tubular member relative to the actuator during actuation. The drilling device is disposed below the expansion cone and the expansion cone is disposed at a lower end of the tubular member. The method further includes locking the locking device. After locking the locking device, a wellbore is drilled to have a diameter greater than an outside diameter of the tubular member. After the drilling, the actuator is actuated to pull the expansion cone towards the locking device to expand at least a portion of the tubular member into contact with the drilled wellbore. The method further includes releasing the locking device and removing the drilling device through the expanded tubular member. | 01-15-2009 |
| 20090065196 | Methods and Apparatus for Anchoring and Expanding Tubular Members - A method for expanding a tubular member in a wellbore includes applying a downward force to an expansion cone through a work string to anchor the tubular member in the wellbore and pulling upwards on the expansion cone with the work string to expand the tubular member. The expansion cone is disposed in a launcher portion connected to the tubular member being expanded. | 03-12-2009 |
| 20090084540 | METHOD OF EXPANDING A TUBULAR ELEMENT IN A WELLBORE - A method is provided of radially expanding a tubular element ( | 04-02-2009 |
| 20090151930 | MECHANICAL EXPANSION SYSTEM - Methods and apparatus enable expanding a tubular in a wellbore. The method and apparatus include running a bottom hole assembly (BHA) into a wellbore. The BHA is anchored to the wellbore and a portion of the BHA is released from the anchor. An expansion member is then pulled by a work string through the tubular thereby engaging the tubular with the wellbore. The work string is reconnected to the anchor and used to release the anchor. The BHA is then removed from the wellbore. | 06-18-2009 |
| 20090294120 | ACTIVELY ENERGIZED DYNAMIC SEAL SYSTEM - A technique for subsea intervention operations utilizes a retrievable dynamic seal system. The technique provides an improved dynamic seal system that is retrievable from a subsea installation. A retrievable dynamic seal is deployed with a tool string on a conveyance and positioned in or at the subsea installation. The retrievable dynamic seal is then actuated to form a seal with the conveyance by mechanically manipulating a seal element to force the seal element into sealing engagement with the conveyance. | 12-03-2009 |
| 20090308594 | METHOD FOR EXPANDING A TUBULAR ELEMENT - A method is provided of expanding a tubular element from a first inner diameter to a second inner diameter larger than the first inner diameter. The method comprises the steps of: a) installing a sleeve of flexible material in the tubular element; b) installing an expander in the tubular element, the expander being suitable to radially expand the sleeve to an outer diameter larger than said first inner diameter by moving the expander in axial direction through the sleeve; and c) moving the expander in axial direction through the sleeve thereby radially expanding the tubular element from the first inner diameter to the second inner diameter. | 12-17-2009 |
| 20100038076 | EXPANDABLE TUBULARS FOR USE IN GEOLOGIC STRUCTURES - An expandable tubular includes a plurality of leaves formed from sheet material that have curved surfaces. The leaves extend around a portion or fully around the diameter of the tubular structure. Some of the adjacent leaves of the tubular are coupled together. The tubular is compressed to a smaller diameter so that it can be inserted through previously deployed tubular assemblies. Once the tubular is properly positioned, it is deployed and coupled or not coupled to a previously deployed tubular assembly. The inventive tubular is useful for all types of wells and boreholes. | 02-18-2010 |
| 20100044030 | Geometrically Optimized Expansion Cone - A geometrically optimized expansion cone for radially expanding a tubular member. In some embodiments, the expansion cone includes an annular body having an outer surface. The outer surface includes a linear surface having a constant diameter, a curvilinear surface extending from the linear surface, a recessed surface having a diameter less than the diameter of the curvilinear surface, and a chamfer between the recessed surface and the curvilinear surface. The diameter of the linear surface is substantially equal to an inner diameter of the tubular member after expansion, while the chamfer has a maximum diameter less than an inner diameter of the tubular member prior to expansion. The curvilinear surface has a diameter defined by a radius of curvature which is tangent to the chamfer at the maximum diameter and tangent to the linear surface. | 02-25-2010 |
| 20100101778 | EXPANSION JOINT WITH COMMUNICATION MEDIUM BYPASS - An expansion joint with one or more communication medium bypass paths is described herein. At least some illustrative embodiments include a first axially flexible cylinder, one or more additional axially flexible cylinders positioned within the first cylinder, and first and second annular members each positioned at a opposite ends of, and each coupled to, the first cylinder and the one or more additional cylinders (the first and second annular members each including one or more apertures through each member). All cylinders concurrently extend and contract in axial length when the first and second annular members are respectively moved away from and towards each other. Annular spaces formed by each of the one or more additional cylinders and an externally adjacent cylinder, together with corresponding apertures of each of the first and second annular members, each provides at least one path for at least one communication medium. | 04-29-2010 |
| 20100263859 | WELLBORE SYSTEM - A wellbore system is disclosed, comprising a wellbore extending into an earth formation, the wellbore containing a body of fluid, and an expandable tubular element arranged in the wellbore, whereby a lower end portion of the wall of the tubular element is bent radially outward and in axially reverse direction so as to define an expanded tubular section extending around a remaining tubular section of the tubular element. The expanded tubular section is axially extendable by downward movement of the remaining tubular section relative to the expanded tubular section. The body of fluid is located in the remaining tubular section, and a fluid conduit extends from the body of fluid to a location above the remaining tubular section, the fluid conduit being movable in upward direction relative to the remaining tubular section. | 10-21-2010 |
| 20100294487 | SYSTEM FOR DRILLING A WELLBORE - A system for drilling a wellbore into an earth formation comprises an expandable tubular element extending into the wellbore, wherein a lower end portion of the wall of the tubular element extends radially outward and in an axially reverse direction so as to define an expanded tubular section extending around a remaining tubular section of the tubular element. The expanded tubular section is extendable by downward movement of the remaining tubular section relative to the expanded tubular section whereby said lower end portion of the wall bends radially outward and in an axially reverse direction. A drill string extends through the remaining tubular section into the wellbore, such that a space is formed between the drill string and the remaining tubular section, and the system further comprises sealing means arranged to seal said space from an open-hole lower section of the wellbore. | 11-25-2010 |
| 20100314101 | PIPE ANCHORING AND EXPANDING UNIT FOR PRODUCING A SLIM WELL AND METHOD FOR PRODUCING A SLIM WEL USING THE SAME - An anchoring and expanding unit comprising an anchoring device ( | 12-16-2010 |
| 20110000664 | Non-collapsing Built in Place Adjustable Swage - A swage is made from segments that slide relatively to each other to go from a run in dimension to a maximum or built dimension when the segments move into alignment. The angle of inclination of the sliding axis between the members is less than the swaging angle for the pipe on the exterior of the segments so that once the segments are aligned and driven into a tubular for swaging they are precluded from extending into misalignment to clear an obstruction. In this manner a minimum drift is provided or the swage simply stalls. To facilitate building the swage in a tubular to the predetermined maximum dimension, the sliding surfaces are configured at an angle to bear the radial reaction forces from the tubular more directly thereby reducing the contact forces and the resulting friction. The edge connections are also configured to reduce bending which can cause segment binding as the swage is built in the tubular. | 01-06-2011 |
| 20110048699 | SYSTEM AND METHOD FOR ANCHORING AN EXPANDABLE TUBULAR TO A BOREHOLE WALL - The present invention provides a system for anchoring an expandable tubular to a borehole wall. The system comprises a support member having a first end fixed relative to the outside of the tubular and a second end comprising a ramping surface. An anchor member has a first end fixed relative to the outside of the tubular and a second end extending toward the support member, said second end being movable relative to the outside of the tubular. Said support member includes a ramp surface that tapers in the direction of said anchor member. Expansion of the portion of the expandable tubular between the first support end and the first anchor end causes the axial device length to shorten, wherein the difference in length is sufficient to cause the second anchor end to move radially outward and engage the borehole wall as a result of engagement with said ramping surface. | 03-03-2011 |
| 20110120700 | Expansion System for Expandable Tubulars - Methods and apparatus for radially expanding and plastically deforming an expandable tubular include a resilient launcher. The resilient launcher includes a launcher portion and a sleeve portion. An inner diameter of the sleeve portion is smaller than an inner diameter of the launcher portion. An expansion cone is disposed in the launcher portion of the resilient launcher. The expandable tubular is disposed around the sleeve portion and above the launcher portion of the resilient launcher. The launcher portion comprises a port that is sealable below the expansion cone. | 05-26-2011 |
| 20110232900 | COMPLIANT EXPANSION SWAGE - The present invention generally relates to a swage assembly that is movable from a compliant configuration having a first shape to a substantially non-compliant configuration having a second shape. In one aspect, an expansion swage for expanding a wellbore tubular is provided. The expansion swage includes a body and a solid cone disposed on the body. The expansion swage further includes a deformable cone disposed on the body, wherein the solid cone is made from a first material and the deformable cone is made from a second material and wherein the deformable cone is movable relative to the body when the expansion swage is in a compliant configuration. In another aspect, a method of expanding a wellbore tubular is provided. | 09-29-2011 |
| 20110240286 | ACTUATOR AND TUBULAR ACTUATOR - An actuator includes a tubular configured to longitudinally expand in response to radial expansion of at least a portion of the tubular. | 10-06-2011 |
| 20110272139 | SYSTEM FOR DRILLING A WELLBORE - A system is provided for drilling a borehole into an earth formation, comprising a casing arranged in the borehole, a drill string extending through the interior of the casing to a lower end portion of the borehole, and a body of drilling fluid extending into the casing, the casing having an inner surface susceptible of wear due to frictional contact with an outer surface of the drill string during drilling of the borehole with the drill string. The system further comprises means for reducing wear of the inner surface of the casing, the means including at least one of a hardened layer at the inner surface of the casing, a friction-reducing layer at the outer surface of the drill string, and a lubricating compound contained in the body of drilling fluid. | 11-10-2011 |
| 20120103596 | down hole well tool with rolling means - A down hole well tool ( | 05-03-2012 |
| 20120160479 | EXPANDABLE PIPE SECTION - An expandable pipe section, intended to be joined with a corresponding pipe section for use in connection with a well casing of a production well for hydrocarbons, where the pipe section is configured to be screwed on or off an adjoining expandable pipe section, the pipe section at one end being provided with a male end having externally arranged threads and where the adjoining expandable pipe section is provided with a correspondingly shaped female end having corresponding internal threads. The distance between adjacent threads at their widest point is less than the maximum width of a thread. Those parts of the pipe being provided with threads are provided with at least two step wise arranged parts with a cylindrical surface being coaxially arranged with the pipe wall(s). | 06-28-2012 |
| 20120175105 | SYSTEM AND METHOD FOR ANCHORING AN EXPANDABLE TUBULAR TO A BOREHOLE WALL - The present invention provides a system for anchoring an expandable tubular to a borehole wall. The system comprises a support member having a first end fixed relative to the outside of the tubular and a second end comprising a ramping surface. An anchor member has a first end fixed relative to the outside of the tubular and a second end extending toward the support member, said second end being movable relative to the outside of the tubular. Said support member includes a ramp surface that tapers in the direction of said anchor member. Expansion of the portion of the expandable tubular between the first support end and the first anchor end causes the axial device length to shorten, wherein the difference in length is sufficient to cause the second anchor end to move radially outward and engage the borehole wall as a result of engagement with said ramping surface. | 07-12-2012 |
| 20120181017 | Expandable Device for Use in a Well Bore - An expandable device comprising a plurality of expandable cells. The cells may be bistable cells or other types of cells that are expanded from a contracted position towards an expanded position. Additionally, the cells may be combined with locking mechanisms to hold the structure in an expanded position. | 07-19-2012 |
| 20130312954 | SYSTEM FOR LINING A WELLBORE - The invention provides a system for lining a wellbore. The system comprises an expandable tubular element arranged in the wellbore, the tubular element having a first end part and a second end part whereby the second end part extends into a tubular wall located in the wellbore. An expander is arranged to radially expand the tubular element by movement of the expander through the tubular element in a direction from the first end part to the second end part, said direction defining an expansion direction. The system further comprises an anchor arranged to anchor said second end part to the tubular wall in a manner that the anchor substantially prevents movement of said second end part in the expansion direction and allows movement of said second end part in the direction opposite to the expansion direction. | 11-28-2013 |
| 20130341005 | Downhole Method and Apparatus - A method of injecting fluid into a formation, comprises exerting a mechanical force on a wall of a bore extending through a formation to modify the permeability of the formation; and injecting fluid into the modified formation. The mechanical force may be exerted through inflation of at least one pressure deformable member mounted on a base member. The base member may be a base pipe. The pressure deformable member may be a hollow or tubular member mounted externally of the base pipe. A plurality of pressure deformable members may be provided. | 12-26-2013 |
| 20140262213 | COUPLINGS FOR EXPANDABLE TUBULAR - An expandable tubular for use in a wellbore includes: a pin formed at a first longitudinal end of the expandable tubular; a box formed at a second longitudinal end of the expandable tubular; a tubular body connecting the pin and the box; and an elastomeric seal disposed in a groove of the box. Each of the pin and box has: a torque shoulder; and a thread. The pin has an asymmetric protrusion formed on an inner surface thereof. | 09-18-2014 |
| 20140305631 | DEVICE FOR ANCHORING IN A CASING IN A BOREHOLE IN THE GROUND - A device for anchoring in a casing in a borehole in the ground. The device comprises a shaft oriented in an axial direction, the shaft having a torque transfer section. The torque transfer section has axially oriented outer cam surfaces extending radially outwardly in a rotational sense. The shaft further has a plurality of clamping bodies circumferentially distributed around the torque transfer section with a limited movability relative to the torque transfer section in rotational sense and in radial directions. The clamping bodies each have an inner, axially oriented clamping body surface facing one of the cam surfaces of the torque transfer section and an outer surface defining a segment of a cylinder coaxial with said shaft. | 10-16-2014 |
