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| Number | Title | Issue Date |
| 7980303 | Laminate pressure containing body for a well tool Apparatus if provided for use in wells, particularly wells that have high-pressure and high-temperature conditions in the well. The shells of completion equipment that is required to withstand the rigorous conditions in such wells are increased in strength by lamina... | 07/19/2011 |
| 7624799 | Rotationally locked wear sleeve for through-tubing drilling and completion A protective sleeve can be inserted through tubing and latched in a manner that resists rotation. At the conclusion of the through tubing operation that involves rotational movement, the sleeve is withdrawn on the string that previously extended through it. ... | 12/01/2009 |
| 7621323 | 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... | 11/24/2009 |
| 7493949 | Flow through subassembly for a downhole drill string and method for making same A subassembly for a downhole drill string has a hollow outer body or barrel with a plurality of blade openings. A plurality of blade sets extends outwardly through the openings. Fluid flow inlets are provided in the lower section of the body below the blade openings... | 02/24/2009 |
| 7469743 | Inflow control devices for sand control screens Inflow control devices for sand control screens. A well screen includes a filter portion and at least one flow restrictor configured so that fluid which flows through the filter portion also flows through the flow restrictor. The flow restrictor includes at least on... | 12/30/2008 |
| 7469744 | Deformable ball seat and method Disclosed herein is a disappearing ball seat. The disappearing ball seat includes, a tubular member having an inside dimension, and a restricted dimension portion of the tubular member dimensioned to prevent passage of a tripping ball therethrough, the restricted d... | 12/30/2008 |
| 7434613 | Surface controlled subsurface lateral branch safety valve A surface controlled subsurface lateral branch safety valve provides flow control for each branch wellbore in a multilateral well. In a described embodiment, a completion system for a well having an intersection between parent and branch wellbores includes an appara... | 10/14/2008 |
| 7434627 | Method and apparatus for friction reduction in a downhole tool A system for facilitating the insertion of a tool into a wellbore, especially a non-vertical wellbore. In one embodiment a tool is fixable in a wellbore and includes centralizing, friction-reducing members that serve to keep the body of the tool off the walls of the... | 10/14/2008 |
| 7431348 | Subsurface drill string A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string member, the male end having a threaded portion including generally square t... | 10/07/2008 |
| 7431082 | Retaining lines in bypass groove on downhole equipment One or more control lines or other types of lines can be run past a downhole tool such as a side pocket mandrel, for example, in a longitudinal groove with a retaining feature for the control line where the assembly leaves little to stick out and get damaged on run ... | 10/07/2008 |
| 7409998 | Critical velocity reduction in a gas well Disclosed herein is a system for enhancing the recovery of gas in a perforated interval of a gas well. The system features a tubing string having a dead string attached for reducing the flow area of the annulus in the perforated interval, thereby reducing the critic... | 08/12/2008 |
| 7404438 | 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... | 07/29/2008 |
| 7404440 | Methods of using casing strings in subterranean cementing operations Improved casing strings, and methods of using improved casing strings in subterranean cementing operations, are provided. An example of an apparatus is a pipe string comprising at least one pipe section and a delivery system of an activator. Another example of an ap... | 07/29/2008 |
| 7387167 | Insulating device and assembly There is disclosed an electrically insulating device in the form of a sleeve (12) for a downhole tool, for electrically insulating a first threaded electrically conductive member in the form of an anchor sub (16) from a second threaded electrically con... | 06/17/2008 |
| 7377315 | Complaint covering of a downhole component A downhole tool string component has a tubular body with a first and second end. At least one end is adapted for axial connection to an adjacent downhole tool string component. A covering, secured at its ends to an outside diameter of the tubular body, forms an encl... | 05/27/2008 |
| 7373974 | Downhole release tool and method A release tool includes a first subassembly and a second subassembly. A connector is operable to selectively coupled the first subassembly to the second subassembly. A release guard is operable to selectively inhibit release of the connector. The release guard opera... | 05/20/2008 |
| 7370700 | Multiple entrance shunt Multiple pathways are provided by which fluid can enter one or more alternate pathway conduits. Entrance tubes can be arranged such that their spacing prevents all of them from being simultaneously obstructed, covered, or otherwise blocked. ... | 05/13/2008 |
| 7357180 | Inhibiting effects of sloughing in wellbores Certain embodiments provide a method for treating a subsurface formation. The method includes providing one or more explosives into portions of one or more wellbores selected for the explosion in the formation. The wellbores are formed in one or more zones in the fo... | 04/15/2008 |
| 7355236 | Non-volatile floating gate memory cells with polysilicon storage dots and fabrication methods thereof Non-volatile floating gate memory cells with polysilicon storage dots and fabrication methods thereof. The non-volatile floating gate memory cell comprises a semiconductor substrate of a first conductivity type. A first region of a second conductivity type different... | 04/08/2008 |
| 7350565 | Self-expandable cylinder in a downhole tool A self-expandable cylinder insertable into the bore of a downhole tool includes a resilient material rolled into a substantially cylindrical shape. The outside circumference of the self-expandable cylinder is variable to allow the self-expandable cylinder to be inse... | 04/01/2008 |
| 7347459 | Coupling for drilling-with-casing operations A modified API Buttress threaded casing connection is disclosed for use in drilling oil and gas wells in lieu of using conventional drill pipe. The coupling threads only are multiple tapered yet can be mated with standard API Buttress pin threads having a single tap... | 03/25/2008 |
| 7347258 | Coated tools for use in oil well pipes The present invention relates to a tool for use in an oil pipe having a fluoropolymer coating imparting substantially reduced adhesion of asphaltenes, paraffin wax, and inorganic scale, so as to reduce plugging of said tool, and impermeability to salt water so as to... | 03/25/2008 |
| 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 |
| RE40067 | Downhole equipment tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such dra... | 02/19/2008 |
| 7320365 | Methods for increasing production from a wellbore The present invention generally relates to a method for recovering productivity of an existing well. First, an assembly is inserted into a wellbore, the assembly includes a tubular member for transporting drilling fluid downhole and an under-reamer disposed at the e... | 01/22/2008 |
| 7303022 | Wired casing The present invention involves a method and apparatus for monitoring conditions downhole and/or manipulating downhole tools by placing electrical wire on a casing string while drilling with casing. Wire is inserted into a groove within the casing string while drilli... | 12/04/2007 |
| 7303016 | Casing with isolated annular space The invention is comprised of (see FIG. 1) an inner pipe (2), and an outer pipe (3), and two end subs (1). An isolated circular hollowed space is contained in between these components. The isolated space can be used for transport of diffe... | 12/04/2007 |
| 7299867 | Hanger mounted in the bore of a tubular component A hanger mounted within a bore of a tubular string component has a split ring, a tapered key and a passageway formed in the hanger. The split ring has interfacial surfaces cooperating with interfacial surfaces of the tapered key. The bore may be located within a tub... | 11/27/2007 |
| 7290607 | Device for the separation of the gas phase from a mixture of fluid/gas for use in hydrocarbons producing and injection wells An apparatus for separating the gaseous phase from a mixture of fluids used during the subsurface intervention in production or injection wells. The device includes a main pipe (T) provided externally with a helix (E) having a longitudinal opening (F) whose edge (B)... | 11/06/2007 |
| 7291303 | Method for bonding a transmission line to a downhole tool An apparatus for bonding a transmission line to the central bore of a downhole tool includes a pre-formed interface for bonding a transmission line to the inside diameter of a downhole tool. The pre-formed interface includes a first surface that substantially confor... | 11/06/2007 |
| 7284608 | Casing strings and methods of using such strings in subterranean cementing operations Improved casing strings, and methods of using improved casing strings in subterranean operations, are provided. An example of a method is a method of cementing a pipe string in a subterranean formation. Another example of a method is a method of cementing a pipe str... | 10/23/2007 |
| 7275594 | Stab guide A tool string stab guide for axially aligning first tool string components with second tool string components is disclosed. The stab guide has a body with an axial length along a longitudinal axis with a first and a second section. The first section of the body adap... | 10/02/2007 |
| 7255176 | Method for reducing diameter reduction near ends of expanded tubulars A variety of approaches to reducing or eliminating “end effect” or the tendency of tubular ends to reduce in diameter after expansion are disclosed. Some involve pre-bending the ends outwardly while others involve removing material internally or/and externally n... | 08/14/2007 |
| 7243714 | Well provided with flexible production tubing A well having a bore hole extending from surface to an underground formation, a casing arranged in the borehole, a tubing hanger supported on the top of the casing, a packer arranged in the casing at a predetermined depth, and a tubing extending from the tubing hang... | 07/17/2007 |
| 7240728 | Expandable tubulars with a radial passage and wall portions with different wall thicknesses A tubular liner including a first tubular portion, a second tubular portion, and an intermediate tapered tubular portion coupled to, and positioned between, the first and second tubular portions. ... | 07/10/2007 |
| 7226243 | Load-bearing, lightweight, and compact super-insulation system A lightweight and compact super-insulation system that is also capable of supporting a high level of compressive load. The system utilizes spacers to provide structural support and utilize controlled buckling of a thin protective outer skin supported by spacers to f... | 06/05/2007 |
| 7225875 | Multi-layered wellbore junction A multi-layered wellbore junction. In a described embodiment, a method of forming an expanded chamber in a subterranean well includes the steps of: positioning multiple chamber sidewall layers in the well; and expanding the layers in the well to form the expanded ch... | 06/05/2007 |
| 7225879 | Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell An assembly and methods for constructing a MONOWELL includes a monodiameter casing disposed in a monodiameter wellbore having diametric efficiency with a monobore production delivery system disposed within the monodiameter casing. An assembly for constructing a mono... | 06/05/2007 |
| 7219732 | Methods of sequentially injecting different sealant compositions into a wellbore to improve zonal isolation Methods of sealing a wellbore include sequentially displacing a first sealant composition and a second sealant composition different from the first sealant composition into the wellbore, followed by allowing the first and second sealant compositions to set. In an em... | 05/22/2007 |
| 7219729 | Permanent downhole deployment of optical sensors The present invention involves methods and apparatus for permanent downhole deployment of optical sensors. Specifically, optical sensors may be permanently deployed within a wellbore using a casing string. In one aspect, one or more optical sensors are disposed on, ... | 05/22/2007 |
