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| Number | Title | Issue Date |
| 7854257 | Mechanically coupled screen and method A particulate exculder tool includes a basepipe having one or more retention features; a screen jacket disposed radially outwardly of the basepipe; one or more end housings at the screen jacket; and a deformable element disposed between a portion of the one or more ... | 12/21/2010 |
| 7363974 | Gravel packing a well A technique that is usable with a subterranean well includes communicating a slurry through a shunt flow path and operating a control device to isolate slurry from being communicated to an ancillary flow path. The system may include a shunt tube and a diverter. The ... | 04/29/2008 |
| 7347259 | Downhole oilfield erosion protection by using diamond A device for use with components for a downhole tool—such as a throat, a nozzle, or a diffuser—used for cleaning a wellbore, are disclosed which decreases the erosion of the components. The device may be comprised of a hardened material, such as stack of pure di... | 03/25/2008 |
| 7108060 | Fracturing different levels within a completion interval of a well Method and apparatus for fracturing different levels of a completion interval in a well. A workstring lowers a fracturing string which, in turn, is comprised of a base pipe which is blank except for perforated sections spaced along its length. Screen may be provided... | 09/19/2006 |
| 7069657 | Method to reduce the width of a slot in a pipe or tube A method for reducing the width of slots spaced about the surface of a pipe or tube. The method comprises subjecting the surface of the pipe or tube to bombardment by a quantity of shot of a pre-determined size and for a pre-determined length of time to cause deform... | 07/04/2006 |
| 7032665 | System and method for gravel packaging a well Systems and methods for gravel packing which provide a mechanism for a gravel slurry to bypass bridges which may form in the well intervals being packed. In one embodiment, a plurality of short, independent bypass flow paths are provided along the length of a well s... | 04/25/2006 |
| 5842516 | Erosion-resistant inserts for fluid outlets in a well tool and method for installing same A well tool having at least one alternate flowpath for delivering fluid to different levels in a wellbore wherein the flowpath is comprised of a conduit having a plurality of outlets spaced along its length which, in turn, are provided with inserts of ero... | 12/01/1998 |
| 5411088 | Filter with gas separator for electric setting tool The filter of the present invention overcomes the aforementioned problems by separating gas and solid particulate matter from liquid as the wellbore fluid passes through the filter. The apparatus comprises a solid tube encased in a perforated tube which e... | 05/02/1995 |
| 5310000 | Foil wrapped base pipe for sand control The flow apertures of a perforated mandrel are temporarily sealed by a foil covering sheet which is made of a sacrificial material, for example, zinc, aluminum and magnesium The sacrificial covering sheet prevents dirty completion fluid from passing throu... | 05/10/1994 |
| 4526230 | Double walled screen-filter with perforated joints A well screen-filter includes a pair of substantially spaced concentric screens defining an annular filtering space therebetween, connected with perforated joint(s) closing the lower end of the filtrating space. The annular space is filled with filtrating... | 07/02/1985 |
