U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5979328

Vehicular Impact Signaling Device

An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.

Newsletter  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.

 

Class 166/250.14 - Of cementing or plugging technique


Subclass of Class 166 - Wells
Definition: Measuring including the step(s) of determining the quality
No. of patents: 86
Last issue date: 05/11/2010


1      
NumberTitleIssue Date
7712527Use of micro-electro-mechanical systems (MEMS) in well treatments
A method comprising placing a sealant composition comprising one or more MEMS sensors in a wellbore and allowing the sealant composition to set. A method of servicing a wellbore comprising placing a MEMS interrogator tool in the wellbore, beginning placement of a se...
05/11/2010
7631692Settable compositions comprising a natural pozzolan and associated methods
An embodiment of a method of cementing comprises: introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement kiln dust, a natural pozzolan, and water; and allowing the cement composition to set. Another embodiment...
12/15/2009
7575053Low temperature monitoring system for subsurface barriers
A system for monitoring temperature of a subsurface low temperature zone is described. The system includes a plurality of freeze wells configured to form the low temperature zone, one or more lasers, and a fiber optic cable coupled to at least one laser. A portion o...
08/18/2009
7401646Methods for reverse-circulation cementing in subterranean formations
Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; ...
07/22/2008
7402204Flexible cementing compositions and methods for high-temperature wells
A well cementing composition comprises an hydraulic cement and flexible, acrylonitrile-butadiene copolymer particulate material. A method of cementing a well comprises mixing the composition with sufficient water, and optionally, other additives to form a pumpable s...
07/22/2008
7389815Methods for reverse-circulation cementing in subterranean formations
Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; ...
06/24/2008
7387159Blending system for solid/fluids mixtures
The disclosure concerns a method and a system for monitoring the composition of a cement slurry or wellbore service fluid, the method and system including one or more feeder units for solid particulate material; one or more mixing or blending units adapted to receiv...
06/17/2008
7350578Diverter plugs for use in well bores and associated methods of use
Zonal isolation of well bores is often desirable for performing downhole operations such as stimulation operations. In certain embodiments, diverter plugs for achieving zonal isolation in a casing string in a well bore may comprise a mandrel having a first end and a...
04/01/2008
7343974Method and apparatus for performing chemical treatments of exposed geological formations
A method for strengthening a wellbore with an exposed geological formation, the method including: determining or estimating material properties of the exposed geological formation; determining changes necessary in material properties of the exposed geologic formatio...
03/18/2008
7328743Toe-to-heel waterflooding with progressive blockage of the toe region
A modified toe-to-heel waterflooding (TTHW) process is provided for recovering oil from a reservoir in an underground formation. After establishing the conventional TTHW waterflood, the process includes placing a chemical blocking agent at the watered out producing ...
02/12/2008
7322412Casing shoes and methods of reverse-circulation cementing of casing
A method having the following steps: running a circulation valve comprising a reactive material into the well bore on the casing; reverse-circulating an activator material in the well bore until the activator material contacts the reactive material of the circulatio...
01/29/2008
7311147Methods of improving well bore pressure containment integrity
Methods of improving the pressure containment integrity of subterranean well bores are provided. The methods include pumping a fracture sealing composition into the well bore that rapidly converts into a high friction pressure sealing composition which is impermeabl...
12/25/2007
7308936Methods of improving well bore pressure containment integrity
Methods of improving the pressure containment integrity of subterranean well bores are provided. The methods include pumping a fracture sealing composition into the well bore that rapidly converts into a high friction pressure sealing composition which is impermeabl...
12/18/2007
7303008Methods and systems for reverse-circulation cementing in subterranean formations
Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; ...
12/04/2007
7303014Casing strings and methods of using such strings in subterranean cementing operations
Improved casing strings, and methods of using improved casing strings in subterranean cementing operations, are provided. An example of an apparatus is a pipe string comprising at least one pipe section and a delivery system of an activator. Another example of an ap...
12/04/2007
7290611Methods and systems for cementing wells that lack surface casing
Methods and systems for cementing casing in well bores drilled in subterranean formations, and more particularly, methods and systems for cementing casing in a well bore without surface casing or a well head are provided. A method provided herein may comprise sealin...
11/06/2007
7290612Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore
The present invention is directed to an apparatus and method for reverse circulation cementing a casing in an open-hole wellbore. The apparatus includes a surface pack-off device, which has a housing defined by an upper section and lower section. A load bearing plat...
11/06/2007
7284608Casing strings and methods of using such strings in subterranean cementing operations
Improved casing strings, and methods of using improved casing strings in subterranean operations, are provided. An example of a method is a method of cementing a pipe string in a subterranean formation. Another example of a method is a method of cementing a pipe str...
10/23/2007
7281576Apparatus and methods for sealing voids in a subterranean formation
Downhole tools that include an outer tubing disposed around an inner tubing for placement of a sealant mixture into a void in a subterranean formation and associated methods of use are provided. Furthermore, a method is provided for preparing a cement composition, w...
10/16/2007
7264047Annular isolators for expandable tubulars in wellbores
The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the...
09/04/2007
7255173Instrumentation for a downhole deployment valve
The present generally relates to apparatus and methods for instrumentation associated with a downhole deployment valve or a separate instrumentation sub. In one aspect, a DDV in a casing string is closed in order to isolate an upper section of a wellbore from a lowe...
08/14/2007
7256706Hybrid well communication system
A hybrid, hardwired and wireless well communication system having a fiber optical, electrical or other signal transmission conduit extending from the wellhead into the well and one or more wireless signal transducers that are located at a distance from the conduit a...
08/14/2007
7252147Cementing methods and systems for initiating fluid flow with reduced pumping pressure
A method of initiating fluid circulation in a well bore through a casing inner diameter and an annulus outside the casing, the method having the following steps: inducing an increase in the annulus fluid pressure; flowing cement composition into the annulus at the t...
08/07/2007
7252152Methods and apparatus for actuating a downhole tool
The present invention relates to apparatus and methods for remotely actuating a downhole tool. In one aspect, the present invention provides an apparatus for activating a downhole tool in a wellbore, the downhole tool having an actuated and unactuated positions. The...
08/07/2007
7240545Test apparatus for direct measurement of expansion and shrinkage of oil well cements
A test apparatus for the measurement of expansion and/or shrinkage of a cement test sample during curing under pressure and temperature conditions that simulate downhole oil well conditions isolates the test sample from a first fixed volume of incompressible pressur...
07/10/2007
7225871Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore
A system for cementing a casing in an open wellbore having no surface casing, wherein an annulus is defined between the casing and the wellbore, the system having: an annular plug around the casing at the mouth of the wellbore; a cement composition pump fluidly conn...
06/05/2007
7222022Method of determining properties relating to an underbalanced well
There is a method of determining properties relating to an underbalanced well, comprising inducing pressure variations in a fluid within a well, measuring the pressure variations, and calculating pore pressure of at least one fluid-producing formation. The pressure ...
05/22/2007
7219730Smart cementing systems
The present invention provides methods and apparatus for determining the location of an apparatus in a wellbore. The method includes lowering the apparatus with a conveying member and measuring a parameter associated with the conveying member. Thereafter, the measur...
05/22/2007
7216706Annular isolators for tubulars in wellbores
The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming mate...
05/15/2007
7213645Methods of improving well bore pressure containment integrity
Methods of improving the pressure containment integrity of subterranean well bores are provided. The methods include pumping a fracture sealing composition into the well bore that rapidly converts into a high friction pressure sealing composition which is impermeabl...
05/08/2007
7213651Methods and compositions for introducing conductive channels into a hydraulic fracturing treatment
Methods for the treatment of subterranean wells involving injecting a first fracturing fluid into a formation, and then injecting at least a second fracturing fluid into the formation in order to create extended conductive channels through a formation are described....
05/08/2007
7204307Methods of using settable compositions comprising cement kiln dust
The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and com...
04/17/2007
7182135Plug systems and methods for using plugs in subterranean formations
A method and plug for separating fluids in subterranean wells is provided. The plug enters a passage at an interface of successively introduced fluids. The plug comprises an outer body and a detachable inner mandrel attached to the outer body. An Assembly comprising...
02/27/2007
7168311Fiber optic monitoring of flow inside and outside a tube downhole
An apparatus and method for monitoring and characterizing the fluid flow in and around the tubing string in a wellbore, preferably using fiber optic componentry. The apparatus includes a signal sensing demodulator device and a skin friction sensing device positionab...
01/30/2007
7152676Techniques and systems associated with perforation and the installation of downhole tools
A technique to install a tool in a well includes running the tool into the well and fixing the tool to the well with a fixing agent without pumping the fixing agent through a central passageway of the tool. The tool may be a perforating gun that includes a casing bo...
12/26/2006
7133778Methods for selecting a cementing composition for use
A method is provided for selecting a cementing composition for sealing a subterranean zone penetrated by a well bore. The method involves determining a group of effective cementing compositions from a group of cementing compositions given estimated conditions experi...
11/07/2006
7128149Apparatus and methods for improved fluid displacement in subterranean formations
Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of methods include methods of water-wetting an annulus in a subterrane...
10/31/2006
7128148Well treatment fluid and methods for blocking permeability of a subterranean zone
The present invention provides a method and treatment fluid for blocking the permeability of an elevated-temperature zone in a reservoir of a subterranean formation penetrated by a wellbore, the method comprising the steps of: a) selecting the zone to be treated, wh...
10/31/2006
7128142Apparatus and methods for improved fluid displacement in subterranean formations
Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of apparatus include apparatus for evaluating fluids. An example of a ...
10/31/2006
7096944Well fluids and methods of use in subterranean formations
The present invention relates to improved well fluids that include hollow particles, and to methods of using such improved well fluids in subterranean cementing operations. The present invention provides methods of cementing, methods of reducing annular pressure, an...
08/29/2006
1      
 
Sign InRegister
Username  
Password   
forgot password?