Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8167034 | Device for centering a well casing A device (100, 200) is for centering a drill casing (7) within a wellbore (3). The device (100, 200) includes a generally tubular body (9) having an outer surface (11) facing the wellbore (3). A plurality of protrusio... | 05/01/2012 |
| 8141629 | Well string centralizer and method of forming Centralizers including at least a portion formed of a first material and at least one end band secured to the first material and formed of a second material. The end band being installed to resist detachment from the portion formed of the first material. ... | 03/27/2012 |
| 8082988 | Apparatus and method for stabilization of downhole tools A method and apparatus for stabilizing a downhole tool during a downhole operation. The method and apparatus include a stabilizer having a stabilization member adapted to move between a retracted position and an extended position in order to engage a surface in a we... | 12/27/2011 |
| 8074712 | Stop collar friction clamping device A stop collar assembly used for axially securing and/or to resist axial sliding of a downhole tool device. The assembly provided on a housing of the downhole tool and includes a generally annular ring having an inner circumference beveled outward proximate to the ri... | 12/13/2011 |
| 7967065 | Caisson system An example of a caisson system that surrounds a conductor that extends from a head member positioned above a water surface to below a mud line includes a caisson positioned about the conductor, the caisson having a lowest end; a lower centralizer connected within th... | 06/28/2011 |
| 7896067 | Hydraulically operated protector for downhole devices A tool and its operating procedure are provided to protect any device while lowering into a well, and especially hydraulic devices such as sensors with expandable arms or inflatable elements such as packers. The protection is mainly important in the open hole of hig... | 03/01/2011 |
| 7878241 | Expandable centralizer for expandable pipe string A close-tolerance expandable bow spring centralizer 8 having a first expandable collar 10A coupled to and spaced apart from a second expandable collar 10B through a plurality of bow springs 30 wherein expandable collars 10A, 10 | 02/01/2011 |
| 7849918 | Centering structure for tubular member and method of making same An apparatus and method for manufacture of a unitary centralizer forming Apertures are formed in a blank to create an intermediate blank having bow spring elements within a unitary centralizer and expanding a medial portion of the bow spring elements. An expansion e... | 12/14/2010 |
| 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 a unitary piece which includes a guard section having a first end sec... | 08/31/2010 |
| 7775272 | Passive centralizer A passive centralizer for stably centering within a well. The centralizer may be of a retracted profile for advancement within the well and deployable for centralization upon reaching an operation site. Deployment may be achieved in an automated manner without the r... | 08/17/2010 |
| 7708064 | Wellbore pipe centralizer having increased restoring force and self-sealing capability A centralizer includes two stop collars configured to be affixed to an exterior surface of a pipe. A plurality of circumferentially spaced apart spacers is each coupled at each end to one of the stop collars, a first plurality of circumferentially spaced apart bow s... | 05/04/2010 |
| 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 |
| 7431085 | Gravel pack multi-pathway tube with control line retention and method for retaining control line A gravel pack multi-pathway tube includes a body and a flow passage at the body. Further, the tube includes a projection at the body, the projection receptive to a control line. A gravel packing device component wherein the component includes a shroud, a multi-pathw... | 10/07/2008 |
| 7422066 | System for direct vertical connection between contiguous subsea equipment and method of installation of said connection A system for the direct vertical connection between contiguous sub sea equipment is described, having one or more hydrocarbon flow and/or control interconnection between same, so as to dispense with the use of connecting jumpers. One mode of said system comprises a ... | 09/09/2008 |
| 7404436 | Downhole tool A downhole tool for conditioning a casing or liner. The tool includes blades having a circumferential peripheral edge for 360 degree contact with the casing or liner and are formed from a composite material which comprises a polymeric fiber. Such polymeric fibers in... | 07/29/2008 |
| 7393158 | Shrink for centralizer assembly and method A centralizer system is provided for use in a marine riser system, the centralizer being preferably heat-shrink fitted to an upset portion of a keel joint, the upset portion having tapered sections on the upper and lower ends that gradually blend into the outer diam... | 07/01/2008 |
| 7377325 | Centraliser There is disclosed an expandable centraliser for locating a body within a borehole, and a method of centralising tubing in a borehole. In an embodiment of the invention, an expandable centraliser (10) is disclosed, the centraliser (10) comprisin... | 05/27/2008 |
| 7373987 | Method and apparatus for preventing spillage or loss of drill fluids A well bore fluid recovery system and method is disclosed for recovering a column of well bore fluid within a stand of casing before cutting the casing. The recovery system relates to a system for preventing fluids from being spilled when casing is being finished fo... | 05/20/2008 |
| 7367239 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the fi... | 05/06/2008 |
| 7359803 | Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations X1-XN disposed axially along a pipe 14 for measuring at least one par... | 04/15/2008 |
| 7357178 | In and relating to downhole tools An improved centralizer is provided for centralization of tubulars such as casings, liners, production tubing, and production screens, in oil/gas wells. Such a centralizer comprises a tubular body, wherein a portion of an outermost surface of the tubular body is for... | 04/15/2008 |
| 7328624 | Probe for measuring parameters of a flowing fluid and/or multiphase mixture A probe 10,170 is provided that measures the speed of sound and/or vortical disturbances propagating in a single phase fluid flow and/or multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, ... | 02/12/2008 |
| 7320363 | Energized slip ring assembly A slip ring assembly including a slip ring and an electrical contact assembly. The slip ring defines a circumference and an electrical contact groove extending around the circumference of the slip ring. The electrical contact assembly preferably includes a plurality... | 01/22/2008 |
| 7308935 | Rotary pump stabilizer A stabilizer is provided for stabilizing a rotary or progressive cavity pump suspended from production tubing in well casing. The stabilizer is connected between the production tubing and the pump. The stabilizer has a tubular body having a cylindrical wall and a lo... | 12/18/2007 |
| 7308955 | Stabilizer arrangement A stabilizer comprises a body having first and second ends, each of which is formed with a respective connector means, the body having an outer wall upon which is formed a plurality of the upstanding blades radially outer surfaces of which define gauge pads, flow ch... | 12/18/2007 |
| 7306036 | System for reducing adhesion and cohesion between non metallic bailers and side wall of wells A water well bailer. In one embodiment, the bailer includes a tubular housing composed of any polymer used as a plastic, such as, polyethylene, polypropylene, polystyrene, polyesters, polycarbonate, polyvinyl chloride, nylon, poly(methyl methacrylate), polytetrafluo... | 12/11/2007 |
| 7299886 | Stabilized down hole drilling motor A down hole drilling motor includes a stator housing having an exterior surface, an upper end, a lower end, an upper vane mounting region at the upper end and lower vane mounting region at the lower end. An upper mounting sleeve engages the upper vane mounting regio... | 11/27/2007 |
| 7295933 | Configurable multi-function flow measurement apparatus having an array of sensors A configurable multi-function flow measurement apparatus is provided that can selectably function to measure the speed of sound propagating through a fluid flowing within a pipe and/or to measure pressures disturbances (e.g. vortical disturbances or eddies) moving w... | 11/13/2007 |
| 7278478 | Tubing string anchoring tool An anchoring tool anchors a tubing string within a surrounding well casing against rotation in either clockwise or counter clockwise directions. The tool includes a tubular housing for connection in line with the tubing string. A fixed jaw is fixedly mounted on the ... | 10/09/2007 |
| 7278479 | Downhole cable protection device A device for an underground well, typically a petroleum well (1), wherein, in the uncased inflow portion (2, 4, 6) of the well, there is placed an inflow pipe, possibly in the form of a strainer pipe (8) comprising a strainer/perforated outer ma... | 10/09/2007 |
| 7191830 | Annular pressure relief collar The present invention is an apparatus for relieving annular fluid pressure between nested casing strings. The invention includes a pressure relief collar formed of a cylindrical housing and a set of end connections disposed on opposite sides of the cylindrical housi... | 03/20/2007 |
| 7188689 | Variable gauge drilling apparatus and method of assembly therefor A variable gauge drilling apparatus and a method for assembling a variable gauge drilling apparatus for insertion in a subject borehole. The variable gauge drilling apparatus includes: an apparatus housing having a housing size which is suitable for insertion in a s... | 03/13/2007 |
| 7188671 | System, method, and apparatus for survey tool having roller knuckle joints for use in highly deviated horizontal wells A highly flexible, wireline survey tool has roller knuckle joints that enable the survey tool string to penetrate and survey horizontal wells having inclinations of about 80° and more from vertical. The survey tool string includes a nose, roller stems, roller knuck... | 03/13/2007 |
| 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 |
| 7165464 | Apparatus and method for providing a flow measurement compensated for entrained gas A apparatus 10,110 is provided that measures the speed of sound and/or vortical disturbances propagating in a fluid or mixture having entrained gas/air to determine the gas volume fraction of the flow 12 propagating through a pipes and compensating or ... | 01/23/2007 |
| 7159653 | Spacer sub The present invention involves a method and apparatus for communicating from within a wellbore to the surface of the wellbore, as well as communicating from the surface of the wellbore to downhole within the wellbore. More specifically, the present invention involve... | 01/09/2007 |
| 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 |
| 7159673 | Drilling system with expandable sleeve A drilling system and method for drilling a borehole into an earth formation is provided. The drilling system has a drill string having a lower section provided with a sleeve which is radially expandable from a retracted mode in which the sleeve extends around the l... | 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 |
| 7146864 | Apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipe An apparatus measures the speed of sound and/or vortical disturbances propagating in a fluid flow to determine a parameter of the flow propagating through a pipe. The apparatus includes a sensing device that includes an array of pressure sensors used to measure the ... | 12/12/2006 |
