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8181722 Stabilizer assemblies with bearing pad locking structures and tools incorporating same  
Stabilizer assemblies and tools incorporating same are disclosed. In one embodiment, a stabilizer assembly comprises a body having at least one bearing pad receptacle therein, and a bearing pad...
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...
8162053 Gas lift plunger assembly arrangement  
A elongated plunger assembly for pressurized, conduit-enclosed travel utilized in recovery of hydrocarbon deposits in a ground penetrating oil or gas well. The plunger comprises an elongated...
8151879 Zone isolation assembly and method for isolating a fluid zone in an existing subsurface well  
A zone isolation assembly for a fluid monitoring system in an existing subsurface well includes a fluid receiving pipe, a docking receiver, a docking apparatus and a first sealer. The fluid...
7845373 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...
7784537 Control line protector  
An apparatus and method is provided for protecting control lines used with tool strings in a downhole environment. A control line protector assembly comprises a plurality of components formed into...
7748447 Torque anchor and method for using same  
A torque anchor for use with progressive cavity pumps (PC Pumps) for preventing rotation of the PC Pumps and any related tool string within a well bore, possessing a connector constructed and...
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...
7530371 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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
5261488 Centralizers for oil well casings  
A centralizer for well casings is disclosed which, in one aspect has spring strips which are normally bowed to centralize the casing, but which are held in a collapsed disposition against the...
5238062 Centralizer for centring drilling and casing pipes and centralizing arrangement including said centralizer  
A centralizer comprises two spaced-apart support rings connected by spring bows. Each support ring is provided with an internal groove. In use the centralizer is slid onto a pipe provided with two...
4909322 Casing centralizer  
There is disclosed a casing centralizer which comprises a pair of longitudinally spaced collars adapted to be assembled about the casing, and bow springs which extend longitudinally between the...
4794986 Reticulated centralizing apparatus  
A reticulated centralizing apparatus and methods for its use. The apparatus has a plurality of pairs of collars or cages and a plurality of springs or bows connected to and extending between the...
4688636 Non-weld casing centralizer  
A centering device or centralizer for mounting on oil well tubings and similar conduit strings, the invention acts to maintain substantially uniform clearance between such strings and a wellbore....
4651823 Centralizer  
A new well bore centralizer construction; a well bore centralizer construction which may be shipped in disassembled condition by the manufacturer, occupying the smallest volume of space, to be...
4603737 Line protector  
Improvements in protectors operative to carry and protect small diameter tubing, pipe or cables which are attached externally to oil well production tubing to control down hole devices such as...
4601334 Control line protector for oil well tubing string  
A control line protector for securing and protecting a control line or lines to the exterior of an oil well tubing string. The protector comprises a flexible steel strap to the ends of which a...
4545436 Centralizer band-collar connection  
Improvements in well bore centralizers; improvements in centralizers which may be shipped by the manufacturer unassembled, occupying a small volume of space, and later assembled; a...
4543998 Protector clamp for well control lines  
A control line protector clamp having an elastic inner wall with longitudinal slots therein to accommodate and secure control lines comprising a pair of rubber-coated, semicylindrical, skeletal...
4531582 Well conduit centralizer  
A conduit centralizer comprises segmented, sliding means connected by a plurality of axially extending, outwardly bowed leaf springs. Each sliding means is formed by the hinged connection of a...
4520869 Centralizer for well casings  
A centralizer for a well casing, and the method of producing a centralizer, for assembly in the field. The centralizer comprises two collars and a plurality of spring bows, with a bow receiving...
4422504 Protective clamp assembly  
A protective clamp assembly is provided for securing a conductor lines to the production tubing of oil and gas wells and providing for efficient transition of the conductor lines past the various...
4363360 Apparatus for use in maintaining a well pipe centered within a well bore  
There is disclosed apparatus for use in maintaining a well pipe centered within a well bore, including a centralizer adapted to be disposed about the pipe, and stop collars above and below the...
Matches 1 - 50 out of 92 1 2 >