Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8167035 | Method of forming downhole apparatus, downhole apparatus and centralizer comprising the same The present invention relates to a method of forming downhole apparatus. The method comprises disposing a plastics material (26) on a reinforcing apparatus (24) to form a body (12) having a bore extending through the body. The reinforcing appara... | 05/01/2012 |
| 7624798 | Centralizer for expandable tubulars A multi part centralizer can be secured quickly to tubular to be cemented and expanded in a deviated wellbore. The segments ratchet with respect to each other and are capable of holding the centralizer snug against the tubular for delivery downhole and cementing. Af... | 12/01/2009 |
| 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 |
| 7409758 | Vibration damper systems for drilling with casing Apparatus and methods are provided for reducing drilling vibration during drilling with casing. In one embodiment, an apparatus for reducing vibration of a rotating casing includes a tubular body disposed concentrically around the casing, wherein tubular body is mov... | 08/12/2008 |
| 7395881 | Roller subs A roller sub system for reducing friction between a tool string and a wall in a well bore for use in the oil and gas industry. The apparatus has a roller body and wheel sub system, which is configured to have removably mounted wheels of variable diameters. A plurali... | 07/08/2008 |
| 7182131 | Dual diameter and rotating centralizer/sub and method A dual diameter centralizing sub for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress into grooves between radially outwardly-e... | 02/27/2007 |
| 7159668 | Centralizer A centralizer 10 for mounting on a tubular member such as a section of casing, together with one or more stops 42, 48 for retaining the centralizer thereon. The stops 42, 48 are provided with profiles for engaging the centralizer to restrict rot... | 01/09/2007 |
| 7156171 | Dual diameter and rotating centralizer/sub A centralizer for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress to a minimal diameter around the outer diameter of the sub t... | 01/02/2007 |
| 7140432 | Dual diameter and rotating centralizer/sub and method A dual diameter centralizing sub for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress into grooves between radially outwardly-e... | 11/28/2006 |
| 7134455 | Insulator apparatus for vacuum insulated tubing An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator... | 11/14/2006 |
| 7124828 | Apparatus for retaining two strings of tubulars An apparatus for retaining two strings of tubulars characterized in that the apparatus comprises body parts of a device for retaining a single string of tubulars and a converting member. A device for retaining a string of tubulars, the device comprising at least one... | 10/24/2006 |
| 7071697 | Centralizer including measurement means A centralizer (1) for position a casing (3) in a conduit (4) passing through underground formations includes measurement means (7) such as an electrode for deriving at least one representative parameter of the formations. ... | 07/04/2006 |
| 7071696 | Measurement device and support for use in a well The invention provides a support for measurement means for monitoring and/or studying a fluid reservoir (13) through which at least one well (11) passes, said support comprising: a cylindrical tube (2); and a jacket (3) surrounding said c... | 07/04/2006 |
| 7048064 | Multi-unit centralizer A multi-unit centralizer for centralizing or otherwise positioning a tubing string in a well bore. The centralizer has a centralizer hub including multiple hub subunits for removably engaging each other and at least one spacer lug for removably engaging each of the ... | 05/23/2006 |
| 7025136 | Torque reduction tool A tool for reducing torque on work string, eg for gas or oil production, comprises an upper clamp (2), a lower clamp (3) and connection means (4), the three components formed as a unitary structure (1). The tool also comprises bearing mea... | 04/11/2006 |
| 7011159 | Compact mid-grip fastener A fastener for coupling blowout preventers in a stack including an elongated shaft having a first end and a second end, and a head disposed proximate the first end of the elongated shaft and adapted to be retained in a recess in a first blowout preventer. The second... | 03/14/2006 |
| 7000845 | Throughplating of flexible printed boards For throughplating flexible circuit boards, two electrically conductive layers located on opposing surfaces are electrically interconnected by cutting through the circuit board using a simple cutting tool for producing a passage. A defined quantity of conductive mat... | 02/21/2006 |
| 6997254 | Method of making a centering device and centering device formed by that method A spring centralizer device for supporting a tubular member spaced from the wall of a bore is made from a single piece of boron steel material. The spring centralizer device has first and second collars spaced apart along a longitudinal axis. Spring bow portions ext... | 02/14/2006 |
| 6966371 | Dual diameter and rotating centralizer/sub and method A dual diameter centralizing sub for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress into grooves between radially outwardly-e... | 11/22/2005 |
| 6957704 | Limit clamp for use with casing attachments A limit clamp for securing a tool to a casing having a groove in its outer surface. The limit clamp comprises a block having a base and a flange. The base is positioned in the groove to contact at least one stop in the groove and the flange extends out of the groove... | 10/25/2005 |
| 6929065 | Latch-type tubing protector having C-shaped clamping members, a minimized running profile and a large holding force Apparatus for protecting tool joints and injection or control tubing of production tubing strings employed in the production of oil and gas is disclosed, where the protector has a minimized running profile and includes two C-shaped clamping members designed to be fo... | 08/16/2005 |
| 6910534 | Apparatus for attaching a sensor to a tubing string A method and apparatus, for deploying a sensor attached to tubing in a highly deviated or horizontal wellbore, that are characterized by a stationary attachment system that securely fixes a sensor to a tubing string such that the sensor is coupled to the casing rega... | 06/28/2005 |
| 6830103 | Roller subs The present invention provides a roller sub for use downhole in oil or gas wells as part of a toolstring or drill string to reduce friction between the string and wellbore. The roller sub is a modular assembly of parts which assemble together to trap the roller whee... | 12/14/2004 |
| 6637511 | Borehole casing centralizer A borehole casing centralizer segment (1) including a first collar portion (3), a second collar portion (5), and bows (7) extending between the first collar portion (3) and the second collar portion (5). First connectors (9) are provided at first location... | 10/28/2003 |
| 6533034 | Centralized stop collar for floating centralizer A centralizer for engagement with a pipe exterior surface to be positioned downhole in a wellbore. The centralizer includes a collar which can be fastened with set screws or other connector to the pipe exterior surface. A body is engaged with said collar ... | 03/18/2003 |
| 6474411 | Metal protector for threaded extremities of well drilling tubes The invention relates to metal protectors for threaded extremities of pipe joints for the drilling of oil, gas and geothermal wells. The protectors are intended to protect the threads and seals of the assembly joint against shocks during transportation an... | 11/05/2002 |
| 6457519 | Expandable centralizer A centralizer for laterally positioning an instrument in an opening larger in diameter than the diameter of an opening through which the centralizer can freely pass. The centralizer includes spring blades affixed at one end to an outer surface of the inst... | 10/01/2002 |
| 6367556 | Multiple configuration centralizer device and method for using same A novel multiple configuration hand assembly centralizer system adaptable to virtually all known rock and soil anchoring applications is presented. The primary components to the centralizer include a plurality of straps and two collars which hold the stra... | 04/09/2002 |
| 6250394 | Apparatus for assisting the advancement of a work string and method An apparatus for assisting the advancement of a work string. In the preferred embodiment, the work string is concentrically disposed within a highly deviated tubular member. The apparatus comprises a cylindrical member having a first half clamp and a seco... | 06/26/2001 |
| 6152220 | Down-hole tool with centralising component A tool for use in a well bore has a housing attachable to a work string or drill string wherein the housing supports a floating component that is free to move in the lateral or radial members relative to the housing within predetermined limits. The floati... | 11/28/2000 |
| 6102118 | Multi-purpose adjustable centralizer system with tool A novel centralizer system adaptable to virtually all known rock and soil anchoring applications. Most preferably made from a petroleum based material, the primary components to the centralizer include a plurality of straps and two collars at opposite end... | 08/15/2000 |
| 5881810 | Centralizer A centralizer comprises two annular bands which are spaced apart by a plurality of members extending there-between. The members are inclined to the longitudinal axis of the centralizer by an angle a of typically 30° to 45°.... | 03/16/1999 |
| 5778976 | Casing installation equipment Improvements in casing installation components are described. The modified construction comprises radial support pedestals (2) incorporating rollers (3) on the outside of the support pedestals so that the rollers reduce longitudinal friction between the c... | 07/14/1998 |
| 5579854 | Drill pipe casing protector and method A drill pipe casing protector has an inner hub member releasably secured to the exterior of a drill pipe to rotate therewith and an outer buffer ring rotatably mounted on the inner hub to allow relative rotation between the drill pipe and the outer buffer... | 12/03/1996 |
| 5553666 | Standoff insulator and method for well pump cable A standoff insulator and support for an elongated power cable disposed adjacent to a fluid conducting tubing string for a fluid production well utilizing an electric submersible pump connected to the tubing string. The pump power cable is held in a stando... | 09/10/1996 |
| 5496133 | Transport assembly for pump and discharge line A water table lowering assembly includes a discharge line connected to a submersible pump. At least two brackets are secured along the length of the discharge line. A cable is connected at one end to the submersible pump. The cable extends parallel to the... | 03/05/1996 |
| 5447207 | Downhole tool A stabilizer-type downhole tool comprises an elongate main body. At least one elongate blade lying generally longitudinally along the exterior of the main body projects radially outwardly therefrom. Attachment means cooperative between the main body and t... | 09/05/1995 |
| 5363931 | Drilling stabilizer A stabilizer to be mounted on a collar of a well drilling string including a circumferentially continuous tubular body having several outwardly extending blades thereon, the tubular body having an inner dimension such that it can be slid onto a drill coll... | 11/15/1994 |
| 5343942 | Submersible pump line protector A line protector protects a line which is strapped to a string of well tubing made up of sections that secure together by threaded couplings. The line protector includes a channel member having upper and lower ends, a base and two spaced apart sidewalls e... | 09/06/1994 |
| 5295536 | Drilling mud container apparatus In accordance with an illustrative embodiment of the present invention, a container for preventing spilling of drilling mud onto the rig floor to thereby save the mud for later reuse includes a diametrically split and hinged barrel having a fixed lower se... | 03/22/1994 |
