Patent application number | Description | Published |
20080223568 | Pipe Expander - An expander is provided for radially expanding a tubular element, the expander having an axially forward direction and being provided with thrust means for exerting a thrust force to the expander to move the expander in axially forward direction through the tubular element. The expander comprises an adjustable cone having an expander surface tapering radially inward in the axially forward direction, the adjustable cone being movable between a radially expanded mode and a radially collapsed mode. The expander further comprises adjusting means for moving the adjustable cone from the collapsed mode to the expanded mode by the action of said thrust force exerted to the thrust means. | 09-18-2008 |
20080237308 | FORGE WELDING METHOD - A method of joining tubulars includes the step of joining the tubulars by forge welding. The tubular ends that are to be welded together may be shaped into a sloping configuration, such that when the tubular ends are heated during the forge welding process the heated tubular ends deform as a result of thermal expansion into a substantially longitudinally oriented cylindrical shape. | 10-02-2008 |
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 |
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 |
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 |
20130306329 | METHOD AND WELLBORE SYSTEM - The invention provides a wellbore system comprising an expandable tubular element arranged in a wellbore formed in an earth formation whereby an annular space is present between the tubular element and a wall surrounding the tubular element. The tubular element is provided with sealing means for sealing the annular space, wherein the sealing means includes a foldable wall section of the tubular element. The fold-able wall section has a reduced bending stiffness relative to a remainder wall section of the tubular element and is deformable from an unfolded mode to a folded mode by application of a compressive folding force to the tubular element. The foldable wall section when in the folded mode comprises at least one annular fold extending radially outward into said annular space. The wellbore system further comprises a folding device for applying said folding force to the tubular element. | 11-21-2013 |
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 |
20150014989 | CONNECTOR ASSEMBLY - The invention provides a connector assembly for interconnecting tubular elements. The connector assembly comprises at least one pin member, at least one box member, and for each box member a respective coating layer. Each pin member has a threaded outer surface and each box member has a threaded inner surface allowing the pin member and the box member to be screwed together. Herein the respective coating layer is positioned between the threaded surfaces of the pin member and the box member. Each coating layer is of a softer material than said threaded surfaces. The connector assembly further comprises means for removing excess coating material during make up of the pin member and the box member. | 01-15-2015 |
20150035274 | CONNECTOR ASSEMBLY - The invention provides a connector assembly for interconnecting tubular elements. The connector assembly comprises at least one pin member, at least one box member, and for each box member a respective coating layer. Each pin member has a threaded outer surface and each box member has a threaded inner surface allowing the pin member and the box member to be screwed together. Herein the respective coating layer is positioned between the threaded surfaces of the pin member and the box member. Each coating layer is of a softer material than said threaded surfaces. The connector assembly further comprises means for removing excess coating material during make up of the pin member and the box member. | 02-05-2015 |
20150047857 | COMBINED CASING SYSTEM AND METHOD - The invention relates to a method for drilling and casing a wellbore using a drilling rig having a predetermined load capacity, using a casing scheme comprising two or more casing strings, and at least one combined casing string, which includes a first one of the casing strings fitting within a second casing string. The weight of the at least one combined casing string may exceed the load capacity of the drilling rig, and the weight of each of the parts of the at least one combined casing string is less than the load capacity. | 02-19-2015 |