| Patent Number |
Title Of Patent |
Date Issued |
| 7387675 |
Foamed settable compositions comprising cement kiln dust |
June 17, 2008 |
| 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 combinations thereof. The |
| 7387156 |
Perforating safety system |
June 17, 2008 |
| A perforating safety system. A perforating safety system includes a detonation transfer interrupter with a device which decreases an axial separation between detonation transfer components after installation of the interrupter in the well. Another perforating safety system includes a |
| 7384894 |
Cement compositions with improved fluid loss characteristics and methods of cementing in surface |
June 10, 2008 |
| Improved fluid loss control additives for use in cement compositions are provided. The improved fluid loss control additives and cement compositions are suitable for use in surface and subterranean applications. The improved fluid loss control additives and cement compositions may be |
| 7384893 |
Cement compositions with improved fluid loss characteristics and methods of cementing in surface |
June 10, 2008 |
| Cement compositions comprising an improved fluid loss control additive are provided. The cement compositions are suitable for use in surface and subterranean applications. The cement compositions may be particularly useful for subterranean well completion and remedial operations, such as |
| 7381263 |
Cement compositions comprising high alumina cement and cement kiln dust |
June 3, 2008 |
| The present invention provides cement compositions that comprise water, high alumina cement, a soluble phosphate, and cement kiln dust. The cement compositions optionally may be foamed with a gas. Methods of cementing also are provided that comprise: providing the cement composition; |
| 7380596 |
Downhold disconnect safety joint |
June 3, 2008 |
| A safety joint that allows disconnection from a downhole section of a drill string without rotating the drill string. In an example class of embodiments, the innovative safety joint includes a sleeve with a j-slot that fits to a lug attached to the mandrel. A piston is attached to the |
| 7380466 |
Apparatus and method for determining mechanical properties of cement for a well bore |
June 3, 2008 |
| Apparatus for testing mechanical properties of a sample cement composition. The apparatus includes an annular test chamber and a variable stress system. The variable stress system communicates with the annular test chamber. The variable stress system is operable to control at least o |
| 7378377 |
Compositions for preventing coagulation of water-in-oil emulsion polymers in aqueous saline well |
May 27, 2008 |
| Methods of combining water-in-oil emulsion polymers with aqueous saline well treating fluids and compositions are provided. A composition of the invention basically comprises hydraulic cement, an aqueous saline fluid sufficient to form a slurry, a polymer precipitation and coagulation |
| 7377319 |
Downhole device to measure and record setting motion of packers and method of sealing a wellbore |
May 27, 2008 |
| A downhole tool assembly including a sealing device and a sensing device for sensing parameters associated with the operation of the sealing device. |
| 7374690 |
Processes for removing oil from solid wellbore materials and produced water |
May 20, 2008 |
| Processes for removing oil from a solid wellbore material such as drill cuttings or water such as produced by a subterranean formation include contacting the solid material/water with an amino-substituted polymer such as chitosan and a halogenating agent. The oil separates from the s |
| 7373982 |
Cements for use across formations containing gas hydrates |
May 20, 2008 |
| A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water, a cementitious material, and a gas hydrate inhibitor, and placing the cement composition in the wellbore. A cement composition comprising water, a cementitious materi |
| 7373981 |
Methods of cementing with lightweight cement compositions |
May 20, 2008 |
| Foamed cement compositions comprising density reducing additives and methods of making and using the same are disclosed. In one embodiment, a method of cementing is disclosed. The method of cementing comprises preparing a base cement composition comprising a cement, a water, and a de |
| 7373974 |
Downhole release tool and method |
May 20, 2008 |
| A release tool includes a first subassembly and a second subassembly. A connector is operable to selectively coupled the first subassembly to the second subassembly. A release guard is operable to selectively inhibit release of the connector. The release guard operable to inhibit release |
| 7373973 |
Packer element retaining system |
May 20, 2008 |
| A bridge plug having a segmented backup shoe, and at least one split cone extrusion limiter, the extrusion limiter comprising a two part conical retainer positioned between packer elements and the segmented backup shoe to block packer element extrusion though spaces between backup shoe |
| 7372264 |
Contamination estimation using fluid analysis models |
May 13, 2008 |
| Methods and systems are described for estimating of the level of contamination of downhole fluid using physical property measurements, and mathematical modeling of contamination functions and fluid property mixing laws. The proposed approaches enable computation of estimates of the p |
| 7370709 |
Subterranean magnetic field protective shield |
May 13, 2008 |
| Downhole mechanical or electrical equipment that possess, induce or supply large electromagnetic interference or magnetic fields are sometimes placed in subterranean wells, usually as part of or attached to wellbore tubulars. These magnetic fields can interfere with the efficient ope |
| 7370701 |
Wellbore completion design to naturally separate water and solids from oil and gas |
May 13, 2008 |
| A wellbore completion design is provided, which creates a convective flow action that separates water and sand from hydrocarbons during production of the hydrocarbons from a subterranean formation. A deviated section of the wellbore creates the desired effect. The wellbore completion des |
| 7367399 |
Loop systems and methods of using the same for conveying and distributing thermal energy into a |
May 6, 2008 |
| Systems and methods are provided for treating a wellbore using a loop system to heat oil in a subterranean formation contacted by the wellbore. The loop system comprises a loop that conveys a fluid (e.g., steam) down the wellbore via a injection conduit and returns fluid (e.g., condensat |
| 7367397 |
Downhole impact generator and method for use of same |
May 6, 2008 |
| A downhole impact generator (60) is adapted to be moved to a target location within a wellbore (68) for transmitting a jarring force to a well tool (72) positioned in the wellbore (68). The downhole impact generator (60) includes a downhole power unit (62) having a moveable shaft (66 |
| 7367395 |
Sand control completion having smart well capability and method for use of same |
May 6, 2008 |
| A sand control completion (100) for installation in a wellbore (102) includes first and second packers (114, 116) that define a first zone (110) in the wellbore (102). A production tubing (120) extends substantially through the first zone (110). Positioned between the first and secon |
| 7363986 |
Annular isolators for expandable tubulars in wellbores |
April 29, 2008 |
| 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 tubing, the seal is |
| 7363978 |
Methods of using reactive surfactants in subterranean operations |
April 29, 2008 |
| Novel uses of reactive surfactants in treating subterranean formations and/or proppant particulates are provided. In one embodiment, the present invention provides a method comprising: providing a treatment fluid that comprises a base fluid and a reactive surfactant; introducing the |
| 7363977 |
Prevention of latex inversion in saltwater cement compositions for use in subterranean formation |
April 29, 2008 |
| The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a first latex stabilize |
| 7363971 |
Method and apparatus for maintaining a multi-chip module at a temperature above downhole tempera |
April 29, 2008 |
| Methods and systems for operating integrated circuits at temperatures higher than expected ambient temperatures. The heating may be of entire circuit boards, portions of the circuit boards (such as the components within a multiple-chip module) and/or single devices. Methods and related |
| 7363967 |
Downhole tool with navigation system |
April 29, 2008 |
| A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a downhole tool in a wel |
| 7360612 |
Roller cone drill bits with optimized bearing structures |
April 22, 2008 |
| A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a respective cutting s |
| 7360599 |
Debris reduction perforating apparatus and method for use of same |
April 22, 2008 |
| A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the initiation ends of the shaped charges (102). An energy absorbing charge holder (104) has a detonat |
| 7360598 |
Method of using lignite grafted fluid loss control additives in cementing operations |
April 22, 2008 |
| Methods of cementing in a subterranean formation are provided. An exemplary embodiment comprises introducing a cement composition into a subterranean formation. The cement composition comprises water, a cement and a fluid loss control additive comprising a graft polymer. The graft po |
| 7360587 |
Debris reduction perforating apparatus |
April 22, 2008 |
| A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the initiation ends of the shaped charges (102). An energy absorbing charge holder (104) has a gas |
| 7357834 |
Cement composition for use with a formate-based drilling fluid comprising an alkaline buffering |
April 15, 2008 |
| A cement slurry comprising a base for reducing the impact of an alkaline solution may be displaced into a wellbore and allowed to set. The base may comprise a metal carbonate that is soluble in water such as potassium carbonate. The cement slurry may further include cement, water, and a |
| 7357197 |
Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the |
April 15, 2008 |
| A method and apparatus for signalling the surface operator about downhole conditions. Sensors located downhole collect data while drilling and the data is processed to determine bit failure, for example. When the sensor data indicates a failure, the pressure of drilling mud is varied usi |
| 7357196 |
Method and system for predicting performance of a drilling system for a given formation |
April 15, 2008 |
| A method and apparatus for predicting the performance of a drilling system for the drilling of a well bore in a given formation includes generating a geology characteristic of the formation per unit depth according to a prescribed geology model, obtaining specifications of proposed drill |
| 7357181 |
Apparatus for autofill deactivation of float equipment and method of reverse cementing |
April 15, 2008 |
| A method for cementing a casing in a wellbore, the method having the following steps: attaching a valve to a casing; locking the valve in an open configuration; running the casing and the valve into the wellbore; reverse circulating a cement composition down an annulus defined between |
| 7356427 |
Methods and systems for estimating a nominal height or quantity of a fluid in a mixing tank whil |
April 8, 2008 |
| Systems and methods are provided for estimating the height of a fluid contained in a mixing tank. A dynamic control device which operates as an external observer is used for controlling and monitoring the estimation. This estimate of the height is then compared to the measured fluid heig |
| 7353879 |
Biodegradable downhole tools |
April 8, 2008 |
| A disposable downhole tool or a component thereof comprises an effective amount of biodegradable material such that the tool or the component thereof desirably decomposes when exposed to a wellbore environment. In an embodiment, the biodegradable material comprises a degradable polymer. |
| 7353876 |
Self-degrading cement compositions and methods of using self-degrading cement compositions in su |
April 8, 2008 |
| Methods of stimulating subterranean formations are provided. More particularly, methods of fracturing subterranean formations using a fracturing fluid comprising a self-degrading cement composition are provided. An example of a method is a method of treating a subterranean formation. |
| 7353875 |
Centrifugal blending system |
April 8, 2008 |
| The present invention relates generally to well servicing operations, and, more particularly, to devices, systems and methods useful in stimulation blending for fluids, mixtures, and/or slurries used in well servicing operations. A device, system and/or method is provided comprising a |
| 7353874 |
Method for servicing a well bore using a mixing control system |
April 8, 2008 |
| A method for servicing a well bore comprises connecting a mixing system to the well bore, controlling the mixing system to produce a material mixture with approximately a desired density, and controlling the mixing system to provide the material mixture to the well bore at approximately |
| 7353870 |
Methods of using settable compositions comprising cement kiln dust and additive(s) |
April 8, 2008 |
| 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 combinations thereof. The |
| 7351681 |
Well bore servicing fluids comprising thermally activated viscosification compounds and methods |
April 1, 2008 |
| Well bore servicing fluids are provided that include a thermally activated viscosification compound. Further, methods of servicing a well bore are provided that include displacing such a servicing fluid into the well bore, wherein a viscosity of the servicing fluid increases as it passes |
| 7351279 |
Cement compositions with improved mechanical properties and methods of cementing in subterranean |
April 1, 2008 |
| Cement compositions with improved mechanical properties and associated methods are provided, which are useful in conjunction with subterranean well operations. In certain embodiments, the cement compositions comprise carbon fibers, rubber particles, a hydraulic cement material, sufficien |
| 7350578 |
Diverter plugs for use in well bores and associated methods of use |
April 1, 2008 |
| 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 second end; a com |
| 7350576 |
Methods of sealing subterranean formations using rapid setting plugging compositions |
April 1, 2008 |
| Methods for using rapid setting plugging compositions comprising oil, clay, magnesium chloride, and magnesium oxide powder to seal permeable zones in subterranean formations are provided. The permeable zones may be sealed by passing the plugging composition and water to the subterranean |
| 7350575 |
Methods of servicing a wellbore with compositions comprising Sorel cements and oil based fluids |
April 1, 2008 |
| A method of servicing a wellbore in contact with a subterranean formation comprising placing in the wellbore a composition comprising a metal oxide, a soluble salt, a surfactant and an oleaginous fluid, and allowing the composition to set. A method of cementing a wellbore comprising |
| 7350574 |
Methods of retarding the setting of a cement composition using biodegradable monomers |
April 1, 2008 |
| Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N'-iminodisuccinic acid) in the cement composition. The inclusion of such materials in cement compositions ma |
| 7350573 |
Servicing a wellbore with wellbore fluids comprising perlite |
April 1, 2008 |
| Wellbore fluids comprising an expanded and ground perlite and methods of using the same are disclosed. In one embodiment, the methods include a method of cementing comprising preparing or placing a cement composition comprising cement, water, and an expanded and ground perlite. The metho |
| 7350571 |
Methods of preparing and using coated particulates |
April 1, 2008 |
| The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising |
| 7350568 |
Logging a well |
April 1, 2008 |
| A method for logging a well. Includes receiving energy with at least one array of elements coupled to a drill bit, wherein the at least one array of elements functions as an electronic array. An apparatus for logging a well includes a drill bit and at least one array of elements coupled |
| 7348892 |
Pipe mounted telemetry receiver |
March 25, 2008 |
| Methods and apparatus for receiving a telemetry signal with a receiver that is moveably disposed within a drillstring. In certain embodiments, the system comprises a surface module coupled to the upper end of a drillstring, an upper module detachably connected to the surface module, |
| 7347284 |
Apparatus and method for hard rock sidewall coring of a borehole |
March 25, 2008 |
| The present invention is directed to an apparatus and method for coring a borehole in a hard rock sidewall of a well bore in a subterranean formation for testing purposes. The apparatus includes a drive motor for operation down hole, a flexible drive shaft coupled to the drive motor |
