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A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.

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Class 166/151 - Passageway valve directly responsive to fluid pressure


Subclass of Class 166 - Wells
Definition: Devices in which fluid flow through the passageway between
No. of patents: 27
Last issue date: 10/23/2007


NumberTitleIssue Date
7284619Packer with positionable collar
A fluid actuated packer 10 and collar 36 assembly is provided for positioning on a tubular member 12. The collar 36 is moveable by a running tool 110 positioned within the tubular member and has a closed position and a packer activ...
10/23/2007
7191844Inflate control system for inflatable straddle stimulation tool
A method and apparatus for controlling inflation and deflation of spaced inflatable packer elements of a straddle stimulation tool within a well casing of a well. A straddle stimulation tool is positioned by tubing at a desired location within the well casing. Fluid...
03/20/2007
7063152Model HCCV hydrostatic closed circulation valve
Devices and methods for methods for cleaning of excess cement from a production assembly as well as from the annulus surrounding the production assembly. A hydrostatic closed circulation valve (HCCV) assembly is described that is primarily actuatable between open an...
06/20/2006
6918440Testing drill packer
One embodiment of the present disclosure describes a test assembly including an inflatable packer. An internal control sleeve controls flow of drilling fluid through an inflation port to inflate and deflate the packer. A shifting tool run on a slick line moves the s...
07/19/2005
6715551Apparatus and methods for applying time lapse VSP to monitor a reservoir
Subterranean reservoir monitoring method, computer system with programming code for implementing the method, and computer readable media and data signal embodying such programming code, the method including one or more of: (a) reservoir screening; (b) reservoir mode...
04/06/2004
6675897Downhole bypass valve
The present invention relates to bypass valves for use in wellbores, particularly but not exclusively to bypass valves used during the setting of hydraulic anchor packers. A bypass valve (2) is provided with a piston (30) slidably mounted adjacent a body ...
01/13/2004
6349771Flow actuated shut-off valve
The present invention generally provides a system and method for selectively sealing a drill string or other tubular member. In one aspect, a sealing member, such as a valve, allows a certain level of flow of drilling fluids and/or other fluids through on...
02/26/2002
6286594Downhole valve
Downhole apparatus (10) for mounting on a string (12) for location in a drilled hole is provided, the apparatus comprising: a tubular body (14) defining a bore; a packer (16) mounted on the body (14) for sealing the annulus between the body (14) and the w...
09/11/2001
6237693Failsafe safety valve and method
A subsurface well safety valve having a flow tube telescopically movable in a housing for controlling the movement of a valve closure member. A piston and cylinder assembly actuates the flow tube and is in communication with hydraulic control fluid from t...
05/29/2001
6167970Isolation tool release mechanism
A release mechanism for use with setting wellbore isolation tools, such as packers or bridge plugs. The release mechanism typically includes a release piston which selectively isolates equalization ports extending from the interior to the exterior of a se...
01/02/2001
6152224Downhole apparatus
Apparatus for use in setting packers and other fluid actuated devices includes a tubular body (222), a valve (228) for controlling the flow of well fluid through a port (234) in the body (222) and a valve actuator (224) mounted on the body (222) and movab...
11/28/2000
6009945Oil well tool
An oil well tool for installation in a production tubing string to provide valved gas communication between the interior of the tubing string and the annulus between the tubing string and casing for improving production from the well. The tool includes a ...
01/04/2000
5954137Apparatus and method for avoiding formation impairment during completion of wellbores
Completion method for avoiding formation impairment in the completion of a wellbore by anchoring and activating a plug at a selected position in the wellbore to seal off a selected portion of the wellbore from other portions of the wellbore. The plug is p...
09/21/1999
5893415Gas diversion tool
A gas diverter tool is disclosed for use in improving the operation of an oil and gas well that has cracks, holes or leaks in the casing. The tool includes a thick walled tubular body for in-line threaded connection within a tubing string below a packer c...
04/13/1999
5810082Hydrostatically actuated packer
A packer is disclosed which uses applied pressure to set the slips and initiate a compressive force on the sealing elements. The compressive force applied to the sealing elements moves components above the sealing elements and allows the available hydrost...
09/22/1998
5505261Firing head connected between a coiled tubing and a perforating gun adapted to move freely within a tubing string and actuated by fluid pressure in the coiled tubing
A firing head adapted to connected between a coiled tubing and a perforating gun, is sized and shaped to enable it to move freely within a tubing string in the wellbore, may be actuated by fluid pressure within the coiled tubing, and includes a circulatio...
04/09/1996
5400855Casing inflation packer
A casing inflation packer for use in a casing string in a well bore. The apparatus includes a housing connected in the casing string. An inflatable packer portion on the housing sealingly engages the well bore when inflated. An inflation passageway is def...
03/28/1995
5305828Combination packer/safety valve assembly for gas storage wells
A combination packer/safety valve assembly is connectable to the bottom end of a tubing string and lowerable therewith into the casing string portion of a gas storage well to control the upward flow through the casing string of pressurized gas stored in a...
04/26/1994
5127474Method and means for stabilizing gravel packs
Method and means for preventing fluidization or mobilization of a gravel pack in a fluid producing well as a result of increased fluid pressure caused by a well shut-in or other pressure surge. A pressure relief valve in the form of a check valve is provi...
07/07/1992
5018574Tubing conveyed wellbore fluid flow measurement apparatus
Wellbore fluid flow rates and other fluid properties may be measured by a tool which is insertable in the wellbore on the end of a tubing string and includes an instrument section and an inflatable packer disposed on the tool for inflation by conducting p...
05/28/1991
4710063Non-return valve for bore hole sleeves
A non-return valve for bore hole sleeves, which are intended for injection of a sealing and/or reinforcing compound into rock cracks and similar cracks and which comprise a rigid case (10), one end (10A) of which is provided with means for detachable conn...
12/01/1987
4637468Method and apparatus for multizone oil and gas production
A lower formation of a multizone well is perforated by a perforating gun lowered by wireline, and then fractured. A packer (modified Pengo packer) with a central bore and a valve seat is positioned within the casing between the lower and upper formations....
01/20/1987
4522264Apparatus and method for treating wells
Improved apparatus for packing particulates such as sand, gravel, or the like, around a well screen in a well for sand control, the apparatus having provisions for packing the particulates tightly in place without relying on settling due to gravity, thus ...
06/11/1985
4421165Multiple stage cementer and casing inflation packer
A combination multiple stage cementing tool and casing inflation packer includes an inflatable packer having a packer mandrel and an inflatable packing element disposed about the mandrel. A cementing tool includes a cylindrical outer casing, a cementing p...
12/20/1983
4420159Packer valve arrangement
A valve system for use in inflating packers mounted on mandrels is disclosed. The valve system uses one or more valves to permit, through the use of seals, the flow of fluid form the interior of a tubular mandrel to the interior of the inflatable packer w...
12/13/1983
3986554Pressure controlled reversing valve
In accordance with an illustrative embodiment of the present invention, a pressure controlled reversing valve includes a housing having a flow passage and ports to communicate the passage with the well annulus outside the housing, valve means for normally...
10/19/1976
3965978Subsurface transient pressure testing apparatus and method of use thereof
Wireline apparatus and method for measuring pressure downhole in well tubing comprising a main plug body which seats in a seating nipple forming part of the tubing, a pressure gauge in communication with the tubing below the main plug body, and means for ...
06/29/1976
 
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