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| Number | Title | Issue Date |
| 7878239 | Fluid collecting apparatus A fluid collecting apparatus inserted in a borehole for collecting fluid in the borehole. The fluid collecting apparatus may include a first packer and a second packer which are selectively adhered to an inside of the borehole, a first supply pipe and a second suppl... | 02/01/2011 |
| 7861774 | Method and apparatus for wellbore fluid treatment A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used wh... | 01/04/2011 |
| 7841397 | Straddle packer and method for using the same in a well bore A tool for use in the treatment of a formation penetrated by a well bore. The tool comprises a tubular core having at least one opening therein for the discharge of pressurized fluid from within the core, first and second axially spaced apart seals disposed on the c... | 11/30/2010 |
| 7832472 | Hydraulic open hole packer A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used wh... | 11/16/2010 |
| 7819184 | Logging plug with high integrity internal seal A logging plug is disclosed having an internal sealing mechanism therein which provides a high degree of sealing integrity between the bore of the plug and a coiled tubing or other means of suspending wellbore equipment running therethrough. The sealing mechanism ut... | 10/26/2010 |
| 7789138 | Well casing straddle assembly A well casing assembly comprises a length of line having two packer/seal assemblies at the upper end thereof and two packer/seal assemblies at the lower end thereof. The lower end packer/seal assemblies are inverted relative to the upper end packer/seal assemblies. ... | 09/07/2010 |
| 7661472 | Methods and apparatus for injecting fluids at a subterranean location in a well Disclosed are retrievable through-tubing tools and methods for use in wellbores to inject fluids at subterranean locations wherein the tools have spaced foamed seal elements that are retracted during installation and expand when in use. ... | 02/16/2010 |
| 7578342 | Inflatable packer assembly Conventional formation evaluation with dual inflatable packers includes the steps of pressurizing the packers so as to isolate an annular portion of the borehole wall, collecting one or more samples of formation fluid via the isolated portion of the borehole wall, a... | 08/25/2009 |
| 7571765 | Hydraulic open hole packer A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used wh... | 08/11/2009 |
| 7543634 | Method and apparatus for wellbore fluid treatment A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used wh... | 06/09/2009 |
| 7441605 | Optical sensor use in alternate path gravel packing with integral zonal isolation Devices and methods for monitoring wellbore conditions while conducting hydrocarbon production within a wellbore, particularly an open-hole wellbore, having multiple zones within. A production tubing string assembly is made up having a plurality of packers for seali... | 10/28/2008 |
| 7438135 | Method of suspending, completing and working over a well Methods are provided in which reliance is placed on a first and second barrier respectively positioned in a well 10 to provide well control during well suspension, completion and/or workover operations. Each of the barriers is below the depth of the lowermost... | 10/21/2008 |
| 7434617 | Cup tool with three-part packoff for a high pressure mandrel A cup tool for use with a high-pressure mandrel of a wellhead isolation tool has a three-part packoff assembly that slides over a cup tool tube from an unset position to a set position. The three-part pack off assembly includes an elastomeric cup, a rigid alignment ... | 10/14/2008 |
| 7422058 | Reinforced open-hole zonal isolation packer and method of use A packer device and methods of use for a packer within uncased wellbore to form a complete fluid seal. The packer device includes a central mandrel body that retains a plurality of nested, telescopic expanding elements that are moveable outwardly from the mandrel bo... | 09/09/2008 |
| 7401651 | Wellbore fluid saver assembly A method for performing a service operation within a wellbore extending into a formation comprises sealing a first length of the wellbore to define a first isolated formation zone, flowing a pressurized fluid through a tubular string into the first isolated formatio... | 07/22/2008 |
| 7383891 | Hydraulic set permanent packer with isolation of hydraulic actuator and built in redundancy A packer includes one or more anchors for securing the packer in a wellbore and a pair of seal elements that form a fluid seal. The packer assembly is hydraulically set and, thus, it can be located at any desired position within the wellbore. The packer assembly is ... | 06/10/2008 |
| 7380609 | Method and apparatus of suspending, completing and working over a well In the various methods of the present invention, reliance is placed on a first and second barrier 26 and 30 respectively positioned in a well 10 to provide well control during well suspension, completion and/or workover operations. Each of the b... | 06/03/2008 |
| RE40308 | Multi-purpose injection and production well system A method and apparatus for simultaneously producing fluid from one or more zones of an oil or gas well, while injecting fluid into one or more other zones of the well, and for converting a depleted production zone into an injection zone, by remotely shifting sleeves... | 05/13/2008 |
| 7367394 | Formation evaluation while drilling A sampling while drilling tool positionable in a wellbore penetrating a subterranean formation is provided. The tool includes a drill collar, at least one sample chamber, at least one flowline and at least one cover. The drill collar is operatively connectable to a ... | 05/06/2008 |
| 7357189 | Seal There is disclosed an expandable seal for sealing at least part of a wall of a well borehole, an expandable seal assembly comprising at least two such expandable seals, and a method of sealing at least part of a well borehole using such a seal. In one embodiment, th... | 04/15/2008 |
| 7357188 | Mono-diameter wellbore casing A mono-diameter wellbore casing is formed by radially expanding a first tubular liner off of a mandrel into contact with a second tubular liner. The first and second tubular liners are positioned within the wellbore in an overlapping relationship. The overlapping po... | 04/15/2008 |
| 7357178 | In and relating to downhole tools An improved centralizer is provided for centralization of tubulars such as casings, liners, production tubing, and production screens, in oil/gas wells. Such a centralizer comprises a tubular body, wherein a portion of an outermost surface of the tubular body is for... | 04/15/2008 |
| 7337841 | Casing comprising stress-absorbing materials and associated methods of use The present invention relates to subterranean drilling and well completion operations, and more particularly, to improved casing that comprises stress-absorbing materials and associated methods of use. In some embodiments, the present invention discloses methods of ... | 03/04/2008 |
| 7325621 | Method and apparatus for ECP element inflation utilizing solid laden fluid mixture An inflatable element utilizing a solid or particulate laden fluid as an expansion media. A fluid component of the solid or particulate laden fluid is exhausted from a defined area of the element to leave substantially only particulate matter therein to maintain the... | 02/05/2008 |
| 7322378 | Semiconductor apparatuses and pipe supports thereof A semiconductor apparatus with a modified pipe support. The apparatus comprises an outer pipe, an inner pipe, and a pipe support. The support comprises a seat and a support ring. The seat comprises a tubular portion for supporting an outer pipe at a top end. The sup... | 01/29/2008 |
| 7320367 | Annular isolators for expandable tubulars in wellbores The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the... | 01/22/2008 |
| 7308945 | Packing tool and method A packing tool comprises a sealing element for mounting on a mandrel so as to define a volume between the sealing element and the mandrel; and a ring member for mounting on the mandrel adjacent the sealing element. The ring member is axially movable relative to the ... | 12/18/2007 |
| 7306033 | Apparatus for isolating zones in a well An apparatus and method, particularly useful for isolating zones in a hydrocarbon wellbore. The apparatus includes a tubular section, such as a length of casing or liner tubular, arranged to be run into and secured within the wellbore which may be open hole or alrea... | 12/11/2007 |
| 7299882 | Annular isolators for expandable tubulars in wellbores The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the... | 11/27/2007 |
| 7290606 | Inflow control device with passive shut-off feature Devices and methods for control flow of formation fluids respect to one or more selected parameter relating to the wellbore fluid. In one embodiment, a flow control device for controlling fluid flow into the production tubular uses a flow restriction member that is ... | 11/06/2007 |
| 7287597 | Device for improving oil and gas recovery in wells A device for improving recovery of hydrocarbons through a well is provided. The device creates, regulates and maintains a calculated bottomhole pressure at a desired level and creating above the device a two-phase gas-liquid homogenous flow for efficient lifting of ... | 10/30/2007 |
| 7278493 | Auto entry guide Systems and methods for guiding a seal assembly associated with a string of production tubing, or a tubular member generally, into a receptacle within a wellbore. The muleshoe of a seal assembly is provided with an auto entry guide device in the form of a guide memb... | 10/09/2007 |
| 7264061 | Well packer for a pipe string and a method of leading a line past the well packer The invention concerns an external well packer (4, 4′, 4″) for a pipe string (2), and also a method of leading at least one line (18) seamlessly past at least one packer (4, 4′, 4″) along the pipe string (2). What is charac... | 09/04/2007 |
| 7252142 | Annular isolators for expandable tubulars in wellbores The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the... | 08/07/2007 |
| 7252162 | Method and device for injecting a fluid into a formation A method of injecting a stream of treatment fluid into an earth formation in the course of drilling a borehole into the earth formation, using an assembly having a drill string provided with at least one sealing means arranged to selectively isolate a selected part ... | 08/07/2007 |
| 7228915 | Device and method to seal boreholes Apparatus and methods are described that are particularly suited for creating a seal in a borehole annulus. In one embodiment, an outer surface 10s of an expandable conduit 10 is provided with a formation 20 that includes an elastomeric m... | 06/12/2007 |
| 7216706 | Annular isolators for tubulars in wellbores The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming mate... | 05/15/2007 |
| 7191844 | Inflate control system for inflatable straddle stimulation tool A method and apparatus for controlling inflation and deflation of spaced inflatable packer elements of a straddle stimulation tool within a well casing of a well. A straddle stimulation tool is positioned by tubing at a desired location within the well casing. Fluid... | 03/20/2007 |
| 7178603 | Method and apparatus for ECP element inflation utilizing solid laden fluid mixture An inflatable element utilizing a solid or particulate laden fluid as an expansion media. A fluid component of the solid or particulate laden fluid is exhausted from a defined area of the element to leave substantially only particulate matter therein to maintain the... | 02/20/2007 |
| 7165611 | Single trip perforation/packing method A method for performing single trip perforation and packing operations via a downhole assembly in a cased well bore is described. The assembly is provided with an upper packer and a lower packer and has fluid communication established therethrough. The upper packer ... | 01/23/2007 |
