Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7779907 | Downhole shock absorber with crushable nose A downhole shock absorber preferably is filled with well fluid in a chamber that is reduced in volume due to impact. A rupture disc can hold the initial non-compressible liquid charge until impact. Upon impact, the rupture disc breaks to allow the fluid to be forced... | 08/24/2010 |
| 7735550 | Throttle unit for dump bailer and method of blocking a water out zone in a production well utilizing the same A method of blocking a water out zone in a production well includes the steps of connecting a throttle unit to a dump bailer, wherein the throttle unit is internally defined a flowing space, which can be adjusted in size to thereby control a flow rate of cement for ... | 06/15/2010 |
| 7438125 | Variable orifice bypass plunger A plunger mechanism comprises an adjustable bypass valve. Depending on well parameters, a user may desire to adjust the descent rate of a plunger in service. The present device allows the user to vary or adjust the bypass orifice to alter the flow of liquid through ... | 10/21/2008 |
| 7419002 | Flow control device for choking inflowing fluids in a well A flow arrangement (10, 12) for use in a well through one or more underground reservoirs, and where the arrangement (10, 12) is designed to throttle radially inflowing reservoir fluids produced through an inflow portion of the production tubing in the well, the prod... | 09/02/2008 |
| 7367392 | Wellbore apparatus with sliding shields Wellbore apparatus including an elongated tubular adapted for disposal within the wellbore. The tubular having an elongated recess formed on its exterior surface along the longitudinal axis. The recess is adapted to accept and house a component therein. A shield dis... | 05/06/2008 |
| 7281584 | Multi-cycle downhill apparatus A downhole apparatus such as multi-cycle circulating subs used during downhole drilling operations includes a piston (42) slidably mounted in a body (4) between positions in which at least one aperture (40) in the body is opened and closed. Move... | 10/16/2007 |
| 7198105 | Apparatus and method for controlling the pressure of fluid within a sample chamber A formation testing tool and method for providing pressure controlled sampling is provided. A flow line delivers formation fluid to a sample chamber in the testing tool. A first valve controls the flow of formation fluid from the flow line to the sample chamber. A p... | 04/03/2007 |
| 7152689 | System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing The invention is a system and method used to seal between an open wellbore and a tubing by bringing the wellbore wall inwardly so as to enable sections of earth from the wellbore wall to create the required seal against the tubing. The earth sections that make up th... | 12/26/2006 |
| 7108067 | Method and apparatus for wellbore fluid treatment A tubing string assembly for fluid treatment of a wellbore includes substantially pressure holding closures spaced along the tubing string, which each close at least one port through the tubing string wall. The closures are openable by a sleeve drivable through the ... | 09/19/2006 |
| 7090010 | Gauge carrier sub apparatus A sub apparatus for delivering and protecting a gauge being lowered down a well bore, which includes a sub body having a first and second ends threadably engageable to sections of pipe in the drill or production string; the sub body including a first chamber for hou... | 08/15/2006 |
| 7073590 | Dual energized hydroseal A bi-directional seal assembly can be used in various types of cartridge valves including dirty fluid valves and a variety of other valves. The present seal assembly utilizes a seal spool, two O-rings and opposing seal cups. Back-up rings are provided to engage the ... | 07/11/2006 |
| 7040395 | Apparatus and method for debris in a well bore A downhole tool is provided for use within a casing. The tool includes a collector tool that has a cylindrical body having an external diameter smaller than the casing diameter so as to form an annular gap between the body and the casing. A first downhole fluid pass... | 05/09/2006 |
| 6955216 | Device for injecting a fluid into a formation A device for injecting a fluid into an earth formation surrounding a wellbore, comprising a body suitable to be arranged in the wellbore and being provided with means for connecting the body to a tubing, a fluid chamber for storage of said fluid, and a pair of infla... | 10/18/2005 |
| 6907797 | Method and apparatus for supercharging downhole sample tanks A tank contains both Zeolite and a hydrate in a gas chamber formed beneath a piston in the sample tank. Out of safety considerations, we avoid using source cylinders of nitrogen whose pressures exceed 4000 psi. Thus, the gas chamber of the sample tank is initially p... | 06/21/2005 |
| 6907926 | Open well plunger-actuated gas lift valve and method of use A system is provided for unloading accumulated liquids and enhancing the recovery of gas from a reservoir having diminished pressure. An annulus between a tubing string and casing is isolated by a packer and continually pressurized with a slipstream of compressed ga... | 06/21/2005 |
| 6851473 | Enhancement of flow rates through porous media For extracting a liquid (such as oil) from a porous medium, the liquid is subjected to pulses that propagate through the liquid flowing through the pores of the medium. The pulses cause momentary surges in the velocity of the liquid, which keeps the pores open. The ... | 02/08/2005 |
| 6840315 | Device for cleaning an inner pipe inserted into a gas or oil producing well A device for cleaning an inner pipe which comprises a nozzle head comprised of a feed borehole axially disposed therein, at least two rotation nozzles communicating with the feed borehole, at least two cleaning nozzles communicating with the feed borehole and a shaf... | 01/11/2005 |
| 6840321 | Multilateral injection/production/storage completion system A multilateral injection/production/storage completion system. In a described embodiment, a method of completing a well having a first wellbore intersecting each of second, third and fourth wellbores includes the steps of: injecting a first fluid into a first zone i... | 01/11/2005 |
| 6827149 | Method and apparatus for conveying a tool in a borehole A method for conveying a tool into a borehole with the use of a tool conveying apparatus includes deploying the tool conveying apparatus into the borehole, transmitting fluid through the tool conveying apparatus, the tool conveying apparatus generating power from th... | 12/07/2004 |
| 6761062 | Borehole testing system A self-contained, transportable system for conducting any of hydrologic tests or water sampling techniques without the need for retooling or readjusting the system. The system includes a borehole unit for conducting the tests in a borehole, and a data acquisition un... | 07/13/2004 |
| 6715293 | Scram jet engine design The present invention relates to a scram jet engine for use with a hypersonic vehicle. The scram jet engine has an upper boundary wall, a lower boundary wall, and a plurality of side walls defining an inner air flowpath. The walls are formed by a plurality of tubula... | 04/06/2004 |
| 6702024 | Dual energized hydroseal A bi-directional seal assembly can be used in various types of cartridge valves including dirty fluid valves and a variety of other valves. The present seal assembly utilizes a seal spool, two O-rings and opposing seal cups. The O-rings are compressed dur... | 03/09/2004 |
| 6595281 | Apparatus for delivering a flowable substance to a remote location The apparatus (10) for delivering grease through the individual string (12) includes a tubular member (14) for holding a supply of grease, a piston (16) sealing slidable through the tubular member (14) and a first valve (18) coupled to a downstream end (2... | 07/22/2003 |
| 6568478 | Method and device to stabilize the production of oil wells The present invention relates to a method and a device to stabilize the production of oil wells. The device is used in a tubing of an oil well and it is intended to overcome the harmful effects provoked by the unstable flow of multiphase flows which are p... | 05/27/2003 |
| 6491097 | Abrasive slurry delivery apparatus and methods of using same An improved abrasive slurry delivery apparatus and associated method of using same that permits repeated and/or extended use of the apparatus in a subterranean wellbore, and reduces abrasive wear during fracturing operations while increasing pump rate and... | 12/10/2002 |
| 6491103 | System for running tubular members The present invention relates to a wiper plug and internal drop ball mechanism that may be used in conjunction with a downhole surge reduction tool to run, hang, and cement casing liners in a wellbore. The apparatus of the present invention comprises a wi... | 12/10/2002 |
| 6470967 | Sampling device A device (10) for collecting fluid samples from a subsurface (100), injecting fluids into a subsurface and measuring the hydrostatic pressure of groundwater in a subsurface is described. The device includes an outer tube (12) with a center bore (12D) and ... | 10/29/2002 |
| 6454009 | Apparatus and method for cleaning well risers The present invention is directed to a method of cleaning a well riser. In particular, the method comprises the steps of suspending in a drill pipe from the surface a circulating tool in the well riser, and causing the circulating tool to axially collapse... | 09/24/2002 |
| 6439307 | Apparatus and method for controlling well fluid sample pressure An apparatus and method for maintaining the pressure of a well fluid sample as the sample is transported to the well surface from a downhole wellbore location. The invention collects a formation fluid sample under pressure. The fluid sample is further pre... | 08/27/2002 |
| 6439306 | Actuation of downhole devices A tool string for use in wellbore includes a sampler device having a port to receive pressure in an annulus region of the wellbore. An elevated pressure is communicated to a rupture disk assembly located in the port to rupture the rupture disk assembly. T... | 08/27/2002 |
| 6352113 | Method and apparatus to remove coiled tubing deployed equipment in high sand applications An electrical submersible pump assembly supported on coiled or continuous tubing. A power cable extends through the coiled tubing for supplying electrical power to the pump assembly. The cable has an outer diameter that is less than the inner diameter of ... | 03/05/2002 |
| 6302200 | Measurement port coupler for use in a borehole monitoring system An in situ underground sample analyzing apparatus for use in a multilevel borehole monitoring system is disclosed. A casing assembly comprising a plurality of elongate tubular casings (24) separated by measurement port couplers (26) is coaxially alignable... | 10/16/2001 |
| 6293346 | Method and apparatus for relieving pressure A pressure relief system includes a closed space having fluid trapped therein, a chamber defined in the closed space, and a pressure responsive member for controlling fluid flow from the closed space to the chamber. Fluid flows from the closed space to th... | 09/25/2001 |
| 6289987 | Integral blade downhole wash tool Apparatus for efficient cleaning of downhole equipment in boreholes, especially oil and gas wells drilled offshore from floating drilling vessels. The apparatus is a wash tool having an elongated central body with a longitudinal bore therethrough. A plura... | 09/18/2001 |
| 6035934 | Method and system for separating and injecting gas in a wellbore A method and system for increasing oil production from an oil well producing a mixture of oil and gas through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone and a selected injection zone, by driving a turbine in the oil wel... | 03/14/2000 |
| 5979569 | Method and apparatus for environmental sampling A sampling device having a fluid collecting portion adapted to recover a fluid sample from a subsurface. Fluid entering the fluid collecting portion passes through a valve which may be remotely actuated. After the sampling device has been driven into the ... | 11/09/1999 |
| 5899270 | Side intake valve assembly A side intake valve assembly for use in a subterranean well in conjunction with a second or lower valve assembly, and a hollow connecting body for connecting the side intake valve assembly and the second or lower valve assembly. The side intake valve asse... | 05/04/1999 |
| 5881807 | Injector for injecting a tracer into an oil or gas reservior An injector (1) for injecting a traceable material into an oil and/or gas reservoir is lowered down into a bore hole that is in communication with the reservoir. An electro-hydraulic system is activated to inject a traceable material stored in a container... | 03/16/1999 |
| 5794697 | Method for increasing oil production from an oil well producing a mixture of oil and gas A system and a method for producing increased quantities of oil from an oil well producing a mixture of oil and gas through a well bore penetrating an oil bearing formation containing a gas cap zone and an oil bearing zone by separating at least a portion... | 08/18/1998 |
| 5718287 | Apparatus for downhole injection and mixing of fluids into a cement slurry An apparatus for downhole injection and mixing of fluids into a cement slurry. The apparatus includes embodiments which either carry a fluid to the proper injection point in a wellbore or maintain it at the proper injection point until activated. In a fir... | 02/17/1998 |
