Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 7114574 | By-pass valve mechanism and method of use hereof A by-pass valve mechanism for a well treatment tool having at least one flow sensitive element, permitting by-pass of well fluid past the flow sensitive element of the well treatment tool during conveyance of the well treatment tool to treatment depth within a well.... | 10/03/2006 |
| 7114558 | Filtered actuator port for hydraulically actuated downhole tools Methods of using and making and apparatuses utilizing a filtered actuator port for hydraulically actuated down hole tools. The filtered port prevents sand or other debris from entering the actuator workings of a tool. In accordance with one aspect of the invention, ... | 10/03/2006 |
| 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 |
| 7066265 | System and method of production enhancement and completion of a well A method of treating and completing a well includes positioning a downhole tool within a well. The downhole tool includes an elongated body defining a central passageway and including a plurality of production openings and at least one frac opening, a frac mandrel d... | 06/27/2006 |
| 7059407 | Method and apparatus for stimulation of multiple formation intervals The invention discloses methods of, as well as apparatus and systems for, perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore by deploying within said wellbore a bottom-hole assembly (“BHA”) having a perfo... | 06/13/2006 |
| 7051812 | Fracturing tool having tubing isolation system and method A formation treatment tool assembly is conveyed within a well casing by a tubing string and has a housing defining treatment fluid supply and discharge passages and a fluid injection port through which treatment fluid is directed from the supply passage into a packe... | 05/30/2006 |
| 7036581 | Wellbore seal device A device for providing a seal between two tubular member in a downhole environment is presented. The sealing device provides the capability of “boosting” or improving the seal, in the event of hydraulic pressure increases from above or below the seal. ... | 05/02/2006 |
| 7026951 | Data telemetry system for multi-conductor wirelines An improved data telemetry system for multi-conductor wirelines to achieve satisfactory transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a firs... | 04/11/2006 |
| 7021375 | Methods of downhole testing subterranean formations and associated apparatus therefor Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into the formation... | 04/04/2006 |
| 7011157 | Method and apparatus for cleaning a fractured interval between two packers A method and apparatus for fluid treatment of a selected interval of a well and then cleaning the selected interval and the apparatus of treatment residue. An straddle tool is run into the well to treatment depth on fluid supplying tubing and has upper and lower pac... | 03/14/2006 |
| 6959762 | Method and apparatus for formation damage removal A method for evaluating the permeability and formation damage in the porous rock around a well bore. This method relates to the use of a single string coiled tubing and a down hole assembly which includes a microcontroller, an electrically operable fluid control val... | 11/01/2005 |
| 6957701 | Method and apparatus for stimulation of multiple formation intervals The invention discloses methods of, as well as apparatus and systems for, perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore by deploying within said wellbore a bottom-hole assembly (“BHA”) having a perfo... | 10/25/2005 |
| 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 |
| 6913077 | Downhole fluid separation system A method of separating fluids that actuate a downhole tool from well fluids is disclosed. The assembly permits equalization or circulation through the running string for delivery of the downhole tool to the desired location. The circulation passage is closed and the... | 07/05/2005 |
| 6527050 | Method and apparatus for formation damage removal A method of removing formation damage through the controlled injection of fluids into the formation, followed by a controlled sudden release of pressure in the formation, an under-balanced surge, which causes fluid and damaging materials to flow back into... | 03/04/2003 |
| 6446720 | Methods of downhole testing subterranean formations and associated apparatus therefor Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into th... | 09/10/2002 |
| 6446719 | Methods of downhole testing subterranean formations and associated apparatus therefor Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into th... | 09/10/2002 |
| 6431273 | Inflatable packer This invention relates to hydraulic anchor packers for use in well bores and, more particularly, to inflatable anchor packers. A hydraulic anchor packer (90) is provided having an inflatable packer element (36) incorporating a cylinder (38) and an elastom... | 08/13/2002 |
| 6386292 | Wellbore annulus packer apparatus and method A method and an apparatus for connection with a tubing string for use in a wellbore for regulating the flow of a fluid within a wellbore annulus between the tubing string and the wellbore. The apparatus includes a tubing rotator and at least one packer va... | 05/14/2002 |
| 6378610 | Communicating with devices positioned outside a liner in a wellbore A downhole string includes a liner and devices positioned outside the liner. One or more control lines extend from the liner devices along the exterior of the liner to one or more connectors that provide connection points inside the liner. The one or more... | 04/30/2002 |
| 6325146 | Methods of downhole testing subterranean formations and associated apparatus therefor Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into th... | 12/04/2001 |
| 6260622 | Apparatus and method of injecting treatment fluids into a formation surrounding an underground borehole A tool and method are disclosed for injecting various treatment fluids into a formation surrounding an underground borehole. The tool comprises at least three axially spaced swab assemblies which define at least two annular spaces between the tool body an... | 07/17/2001 |
| 6152219 | Downhole pulling tool A downhole pulling tool (100) for retrieving downhole devices (102, 104) from a wellbore is disclosed. The downhole pulling tool (100) includes a mandrel (106) and a sleeve (108) that is slidably disposed about the mandrel (106). The sleeve (108) is movea... | 11/28/2000 |
| 6065544 | Method and apparatus for multiple packer pressure relief A system for relieving pressurized fluid entrapped in a annular space between a casing (12) and the surrounding wall (11) of a well bore hole (10) during deployment of a packer exterior (14) of the casing (12) for sealing engagement with the wall (11). Wh... | 05/23/2000 |
| 5579838 | Above production disposal tool An above production disposal tool for use in a production well having a lower production formation and an upper disposal formation includes an outer tube body, upper and lower annular seals, an upper tube member, an upper collar having a plurality of outl... | 12/03/1996 |
| 5464059 | Apparatus and method for supplying fluid into different zones in a formation There is discussed an apparatus for distributing fluid to at least two separate zones having higher (22) and lower (24) injectivity in a ground formation (10) through a pipe element in a well hole (12), where the pipe element by means of upper and lower s... | 11/07/1995 |
| 5383520 | Coiled tubing inflatable packer with circulating port A packer apparatus with a circulating port. A housing of the packer has inflation passages, circulating passages, treating fluid passages, and equalizing passages defined therein. In a straddle packer embodiment, upper and lower packers are mounted on the... | 01/24/1995 |
| 5226478 | Cement port closure sleeve for a subsea well A subsea well assembly has a cement port closure sleeve which opens and closes a cement port in an outer wellhead housing. The outer wellhead housing secures to conductor pipe. An inner wellhead housing is lowered into the outer wellhead housing before th... | 07/13/1993 |
| 5203412 | Well completion tool The completion tool is formed by two identical inflation valve bodies, two identical casing members screwed to the two valve bodies respectively, two identical packer mandrels with packers coupled to said inflation valve bodies, and a valve sleeve coupled... | 04/20/1993 |
| 5027895 | Expandable packer apparatus An expandable packer is disclosed for repairing a rupture in an underground conduit. The device includes a first packer section formed proximate a first end and having a first inflatable bladder mounted peripherally thereon. A second packer section is for... | 07/02/1991 |
| 4898236 | Drill stem testing system A drill stem testing system which does not require rotation or axial displacement of an associated drill string to actuate valves and pumps is described. The system includes a drill stem constructed in a number of sections which are interconnected with sc... | 02/06/1990 |
| 4815538 | Wash tool for well having perforated casing A washing tool (24) attached to the lower end of a pipe string (18) includes a mandrel (28) between upper and lower subs (30, 32). The mandrel (28) has opposed spaced end sections (54 56) connected with an intermediate section (58). Each end section (54, ... | 03/28/1989 |
| 4784225 | Well valve assembly method and apparatus A well valve assembly is disclosed for the control of well fluids that flow in the tubing and the annulus of a well. The well valve assembly consists of two parts, the first part being a housing that forms a portion of the well that has flow openings defi... | 11/15/1988 |
| 4765405 | Perforation circulating washer Disclosed is an improved tool for washing the perforations in an oil or gas well bore casing. The tool includes a tubular mandrel having orifices, between pairs of pressure sealing packer cups, for discharging a cleaning fluid into the area between the to... | 08/23/1988 |
| 4756364 | Packer bypass A packer bypass for use between a pump and packer in a testing string for venting said pump and packer to a well annulus after completion of a testing operation. The packer bypass comprises a case with an inner flow tube disposed therein such that an annu... | 07/12/1988 |
| 4685523 | Removable side pocket mandrel Downhole apparatus for converting conventional petroleum wells to gas lift or chemical injection operation by perforating the well tubing at the desired depth and thereafter installing a packoff anchor within the well tubing, without disturbing the settin... | 08/11/1987 |
| 4671352 | Apparatus for selectively injecting treating fluids into earth formations In the representative embodiment of the invention described herein, formation-treating apparatus is adapted to be dependently supported in a well bore from a pipe string and which includes upper and lower telescoped body members adapted to be selectively ... | 06/09/1987 |
| 4640351 | Sealing packer A packer for a down hole oil well includes an inner mandrel assembly having an upper outer sleeve assembly that includes the hold down mechanism and upper packer seals with a piston on the underside of the packing seals to be pressure responsive and to de... | 02/03/1987 |
| 4580632 | Well tool for testing or treating a well A testing or treating tool enables either squeeze packer elements or inflatable packer elements to isolate an interval of the well bore. A pump provides hydraulic pressure to move the packer elements into sealing engagement with the well bore wall by mani... | 04/08/1986 |
