|
Match
|
Document |
Document Title |
|
|
5358042 |
High angle and horizontal wellbore centralizer and method of use
A method and apparatus for running in a tubing string through a high angle or horizontal wellbore without damage to equipment on the tubing string. Centralizers are mounted on the tubing string at...
|
|
|
5355950 |
Centraliser
A centralizer (1) is used for passing assemblies and tools through bores and tubular ducts in a centralized condition, especially in downhole operations in oil work. The centralizer comprises a...
|
|
|
5348091 |
Self-adjusting centralizer
An oil-field tool for use in combination with a MWD tool, for deployment and retrieval of a MWD tool through a drill string, and, for rigid continuously self-adjusting, centralization of the MWD...
|
|
|
5330001 |
Lead in guide assembly
A lead-in guide assembly is shown for centralizing a downhole tool being run from a well surface within a well bore to a selected downhole location. The lead-in guide can be utilized as a seal...
|
|
|
H001192 |
Low-torque centralizer
An improvement to a centralizer that may reduce the torque required to rotate a casing in a borehole during primary cementing is disclosed. In a first embodiment, the improvement is adapted to a...
|
|
|
5095981 |
Casing centralizer
There is disclosed a casing centralizer which comprises a tubular body or sleeve adapted to fit about a joint of casing, and blades extending longitudinally along the outer diameter of the sleeve...
|
|
|
4875524 |
Casing centralizer
A semi-rigid floating spring type centralizer for use in deviated, highly deviated or horizontal well bores, the centralizer comprising a cylindrical tubular housing having a plurality of floating...
|
|
|
4771830 |
Apparatus for positioning well tools in deviated well bores
In the representative embodiment of the invention disclosed herein, new and improved tool-orienting apparatus is adapted to be secured on a well tool that is to be moved through a highly-deviated...
|
|
|
4658896 |
Apparatus for a tubular string and method of attaching the same thereto
A centralizer apparatus having turbolizer protuberances includes groups of openings for receiving set screws to define a plurality of circumferential and longitudinal points of engagement between...
|
|
|
4483395 |
Wire guard device for wells
A one-piece wire guard device formed of non-metallic material for use in wells includes an inner ring having a split therein defining an opening and having a portion of reduced thickness defining a...
|
|
|
4456064 |
Well bore wall cleaner
A plurality of thin plates of metal is mounted on the central raised surface portion of a collar formed by semicircular annular members that are hingedly secured together. Each of the plates...
|
|
|
4319632 |
Oil recovery well paraffin elimination means
At least a portion of an oil-recovery well casing adjacent an oil-bearing earth formation is heated by the passing of an electrical current therethrough. The heated casing heats any oil entering...
|
|
|
4306620 |
Tri-spacer
Tri-spacer for centering and holding drop pipe and electric wires in the center of a well casing. The tri-spacer consists of a one-piece triangular member with flexible ends providing a centering...
|
|
|
D258379 |
Well pipe spacer
|
|
|
4194561 |
Placement apparatus and method for low density ball sealers
An apparatus and method for the selective placement of ball sealers for fluid treatment of a well, said ball sealers having a density less than the density of said fluid comprising a tubular...
|
|
|
4088185 |
Molded plastic paraffin scrapers and centralizers
A molded plastic scraper is molded in place on the sucker rod and as a result of shrink fitting of the material is firmly held in place thereon. Special configurations and materials particularly...
|
|
|
4004326 |
Cable protector
A protector for protecting cable which is connected to a tubing string in a well. The protector is generally cylindrical having a bore adapted to be secured to the tubing of the string and is...
|
|
|
3981359 |
Centralizer element for well screen
Centralizer assembly for an oil well screen has two identical halves which are fastened together around a well screen to permit the well screen to be properly centered within a tubular well casing....
|
|
|
3963075 |
Centralizer for elastomer coated blast joint
A centralizer for an elastomer coated blast joint includes an elastomer body having a split extending longitudinally thereof with an opening extending centrally and longitudinally through the body....
|
|
|
3933203 |
Centralizer for production string including support means for control lines
An elastomer centralizer for a production string includes an elastomer body having a central opening extending longitudinally therethrough and a split in the body with the split extending to the...
|
|
|
3762472 |
CASING STAND-OFF BAND FOR USE DURING THE RUNNING AND CEMENTING OF CASING IN WELLBORES
The stand-off band of this invention is particularly useful when mounted on casing which must be run into deviated well bores to assure that the casing does not stick prior to reaching the desired...
|
|
|
3713334 |
DOWNHOLE RECORDER DEVICE FOR LOGGING BOREHOLES
A self contained downhole recording device for use in a method of logging boreholes, which includes logging apparatus electrically connected to a recording means, and further including a power...
|
|
|
3614139 |
WELL CASING STOP COLLAR
A stop collar comprising an interrupted, circular band with opposed ends, a deformable knockdown buckle mounted on the exterior at one end of the band, and a drawplate extending from the opposite...
|
|
|
3613783 |
APPARATUS FOR INSTALLING UNDERWATER WELL EQUIPMENT
An apparatus having a nozzle for propulsion and rubber centralizing and guiding ribs for installing equipment on an underwater conduit.
|
|
|
3578084 |
THERMAL WELL COMPLETION METHOD AND APPARATUS
A method and apparatus for attaching subsurface cementing devices to the periphery of free moving casing for use in thermal wells. Centralizers, wall scratchers, cement baskets, and the like are...
|
|
|
3526280 |
METHOD FOR FLOTATION COMPLETION FOR HIGHLY DEVIATED WELLS
|
|
|
3390725 |
Well bore wall cleaning tool
|
|
|
3358768 |
Cement basket
|
|
|
3351136 |
Casing centralizer and well bore wiper
|
|
|
3342270 |
Abrading apparatus for use in well bores
|
|
|
3312285 |
Well pipe centralizer
|
|
|
3306364 |
Abrading apparatus for use in well bores
|
|
|
3292708 |
Tubing centralizer
|
|
|
3289768 |
Turbulence generating centralizer
|
|
|
3282349 |
Casing centralizer
|
|
|
3270697 |
Method for forming a pipe centering device
|
|
|
3240274 |
Flexible turbulence device for well pipe
|
|
|
3237696 |
Well wall solidifying centralizer
|
|
|
3200884 |
Close tolerance centralizer with interconnecting stop collar
|
|
|
3196951 |
Centralizers
|
|
|
3168297 |
Furnace pipe insulation and method
|
|
|
3128827 |
Casing centralizer with well bore and casing scraping means
|
|
|
3100016 |
Rod centralizer
|
|
|
3092182 |
Borehole apparatus
|
|
|
3087550 |
Well bore conditioning devices
|
|
|
3080926 |
Casing centralizer with replaceable wings
|
|
|
3072195 |
Slip over collar type centralizer
|
|
|
3072196 |
Casing centralizer
|
|
|
3065005 |
Casing stop collar to mount a well tool
|
|
|
3044554 |
Casing centralizer
|