Patents by Inventor Francisco Dezen
Francisco Dezen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7240736Abstract: Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and casing. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Then, with the same floating platform, the drilling riser is disconnected and moved to a second well. While performing operations on the second well, the operator lowers a production tree from the floating platform on a lift line, and connects it to the first wellhead housing. An ROV assisted subsea plug removal tool is used for plug removal and setting operations required through the production tree.Type: GrantFiled: September 21, 2005Date of Patent: July 10, 2007Assignee: Vetco Gray Inc.Inventors: Stephen P. Fenton, Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Jarle Michaelsen, Nils Arne Soelvik
-
Patent number: 7044228Abstract: A subsea well system has a flowline jumper that extends between components on the sea floor. The jumper has connectors on each end for connecting to the two components and has a curved portion. At least a portion of the jumper is buoyant to cause it to assume a vertical arcuate configuration when installed. One end of the jumper has a connector that has a mandrel that guides into a mating socket formed on the end of an arm. The arm is mounted to a ring that can be rotated to various orientations.Type: GrantFiled: February 5, 2003Date of Patent: May 16, 2006Assignee: Vetco Gray Inc.Inventors: Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Stephen P. Fenton
-
Patent number: 7032673Abstract: An outer wellhead housing has an external locator member initially oriented in a desired direction. An inner wellhead housing lands in the outer wellhead housing. A BOP orientation spool with an external orientation member and an internal orientation member lands on the inner wellhead housing and orients via the external locator member. A tubing hanger with an orientation member and associated tubing hanger running tool with another orientation member lower through the BOP orientation spool and orient as they land in the inner wellhead housing. A production tree with an orientation member on a lower end lands on the inner wellhead housing. The orientation member of the production tree engages the orientation member of the tubing hanger to rotate the tree to a desired orientation.Type: GrantFiled: November 12, 2003Date of Patent: April 25, 2006Assignee: Vetco Gray Inc.Inventors: Francisco Dezen, Stephen P. Fenton, Gawain Langford, Lars-Petter Sollie, Jon E. Hed
-
Publication number: 20060011348Abstract: Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and casing. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Then, with the same floating platform, the drilling riser is disconnected and moved to a second well. While performing operations on the second well, the operator lowers a production tree from the floating platform on a lift line, and connects it to the first wellhead housing. An ROV assisted subsea plug removal tool is used for plug removal and setting operations required through the production tree.Type: ApplicationFiled: September 21, 2005Publication date: January 19, 2006Inventors: Stephen Fenton, Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Jarle Michaelsen, Nils Soelvik
-
Patent number: 6978839Abstract: A subsea wellhead assembly has a tree that connects internally to the bore of wellhead housing. The tree has a lower end that has a lock member that is moved radially outward into engagement with a profile in the bore of the wellhead housing. The tree is a monobore, having a production passage but no tubing annulus passage extending through it. The tubing hanger has a tubing annulus passage and a production passage. A valve is mounted in the tubing hanger for controlling flow through the tubing annulus passage.Type: GrantFiled: November 20, 2002Date of Patent: December 27, 2005Assignee: Vetco Gray Inc.Inventors: Stephen Paul Fenton, Francisco Dezen, Lars-Petter Sollie, Jon E. Hed
-
Patent number: 6968902Abstract: Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and cased. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Then, with the same floating platform, the drilling riser is disconnected and moved to a second well. While performing operations on the second well, the operator lowers a production tree from the floating platform on a lift line, and connects it to the first wellhead housing. An ROV assisted subsea plug removal tool is used for plug removal and setting operations. Seabed separation is configured upstream of a production choke valve.Type: GrantFiled: November 12, 2003Date of Patent: November 29, 2005Assignee: Vetco Gray Inc.Inventors: Stephen P. Fenton, Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Jarle Michaelsen, Nils Arne Soelvik
-
Publication number: 20040140124Abstract: Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and casing. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Then, with the same floating platform, the drilling riser is disconnected and moved to a second well. While performing operations on the second well, the operator lowers a production tree from the floating platform on a lift line, and connects it to the first wellhead housing. An ROV assisted subsea plug removal tool is used for plug removal and setting operations required through the production tree. Seabed separation is configured upstream of a production choke valve.Type: ApplicationFiled: November 12, 2003Publication date: July 22, 2004Inventors: Stephen P. Fenton, Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Jarle Michaelsen, Nils Arne Soelvik
-
Publication number: 20040140125Abstract: An outer wellhead housing has an external locator member initially oriented in a desired direction. An inner wellhead housing lands in the outer wellhead housing. A BOP orientation spool with an external orientation member and an internal orientation member lands on the inner wellhead housing and orients via the external locator member. A tubing hanger with an orientation member and associated tubing hanger running tool with another orientation member lower through the BOP orientation spool and orient as they land in the inner wellhead housing. A production tree with an orientation member on a lower end lands on the inner wellhead housing. The orientation member of the production tree engages the orientation member of the tubing hanger to rotate the tree to a desired orientation.Type: ApplicationFiled: November 12, 2003Publication date: July 22, 2004Inventors: Francisco Dezen, Stephen P. Fenton, Gawain Langford, Lars-Petter Sollie, Jon E. Hed
-
Patent number: 6742594Abstract: A subsea well system has a flowline jumper that extends between components on the sea floor. The jumper has connectors on each end for connecting to the two components. At least a portion of the jumper is buoyant and sufficiently flexible to cause it to assume a vertical arcuate configuration when installed. One end of the jumper has a connector that has a mandrel that guides into a mating socket formed on the end of an arm. The arm is mounted to a ring that can be rotated to various orientations.Type: GrantFiled: January 10, 2003Date of Patent: June 1, 2004Assignees: ABB Vetco Gray Inc., ABB Offshore Systems, Inc.Inventors: Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Stephen P. Fenton
-
Patent number: 6719059Abstract: A plug retrieval and installation tool is used with a subsea well having a production tree, a tubing hanger, a passage that extends vertically through the tubing hanger and the tree, and a plug located within a plug profile in the passage within the tubing hanger. The plug retrieval device has a housing and connector that is lowered on a lift line onto the upper end of the tree. An axially extensible stem in the housing is driven by drive mechanism into the production passage of the tubing hanger. A retrieval member mounted to the stem engages the plug and pulls it upwardly in the passage while the stem is being moved upward. The connector, drive mechanism and retrieval member are powered by an ROV.Type: GrantFiled: January 10, 2003Date of Patent: April 13, 2004Assignee: ABB Vetco Gray Inc.Inventors: Francisco Dezen, Lars-Petter Sollie, Stephen P. Fenton, Jon E. Hed
-
Publication number: 20030146000Abstract: A plug retrieval and installation tool is used with a subsea well having a production tree, a tubing hanger, a passage that extends vertically through the tubing hanger and the tree, and a plug located within a plug profile in the passage within the tubing hanger. The plug retrieval device has a housing and connector that is lowered on a lift line onto the upper end of the tree. An axially extensible stem in the housing is driven by drive mechanism into the production passage of the tubing hanger. A retrieval member mounted to the stem engages the plug and pulls it upwardly in the passage while the stem is being moved upward. The connector, drive mechanism and retrieval member are powered by an ROV.Type: ApplicationFiled: January 10, 2003Publication date: August 7, 2003Inventors: Francisco Dezen, Lars-Petter Sollie, Stephen P. Fenton, Jon E. Hed
-
Publication number: 20030145997Abstract: A subsea well system has a flowline jumper that extends between components on the sea floor. The jumper has connectors on each end for connecting to the two components. At least a portion of the jumper is buoyant and sufficiently flexible to cause it to assume a vertical arcuate configuration when installed. One end of the jumper has a connector that has a mandrel that guides into a mating socket formed on the end of an arm. The arm is mounted to a ring that can be rotated to various orientations.Type: ApplicationFiled: January 10, 2003Publication date: August 7, 2003Inventors: Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Stephen P. Fenton
-
Publication number: 20030145998Abstract: A subsea well system has a flowline jumper that extends between components on the sea floor. The jumper has connectors on each end for connecting to the two components and has a curved portion. At least a portion of the jumper is buoyant to cause it to assume a vertical arcuate configuration when installed. One end of the jumper has a connector that has a mandrel that guides into a mating socket formed on the end of an arm. The arm is mounted to a ring that can be rotated to various orientations.Type: ApplicationFiled: February 5, 2003Publication date: August 7, 2003Inventors: Gawain Langford, Francisco Dezen, Lars-Petter Sollie, Stephen P. Fenton
-
Publication number: 20030094284Abstract: A subsea wellhead assembly has a tree that connects internally to the bore of wellhead housing. The tree has a lower end that has a lock member that is moved radially outward into engagement with a profile in the bore of the wellhead housing. The tree is a monobore, having a production passage but no tubing annulus passage extending through it. The tubing hanger has a tubing annulus passage and a production passage. A valve is mounted in the tubing hanger for controlling flow through the tubing annulus passage.Type: ApplicationFiled: November 20, 2002Publication date: May 22, 2003Inventors: Stephen Paul Fenton, Francisco Dezen, Lars-Petter Sollie, Jon E. Hed