| Patent Number |
Title Of Patent |
Date Issued |
| RE40197 |
Drill bit having an improved seal and lubrication method using same |
April 1, 2008 |
| A drill bit (100) for drilling a wellbore that traverses subterranean formations includes a drill bit body (106) having a plurality of journal pins (112), each having a bearing surface (128), and a rotary cutter (104) rotatably mounted on each journal pin (112), each rotary cutter (1 |
| RE40067 |
Downhole equipment tools and assembly procedures for the drilling, tie-in and completion of vert |
February 19, 2008 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sa |
| RE39209 |
Production fluid control device and method for oil and/or gas wells |
August 1, 2006 |
| A device and method for selectively controlling the flow of production fluid through a tubing string in an oil and gas well according to which a housing is connected to a tubing string for insertion into the well, and well fluid is passed from the ground surface into the housing. The |
| RE38642 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
November 2, 2004 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| RE38636 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
October 26, 2004 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR with WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| RE38616 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
October 12, 2004 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| RE37867 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
October 8, 2002 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| H2216 |
Method for testing for bioaccumulation |
May 6, 2008 |
| For use in estimating or predicting bioaccumulation of a chemical analyte, even a surfactant, log P.sub.ow values for the analyte may be determined by calculating the log of the ratio of the concentrations of the analyte in n-octanol and in water, equilibrated using a slow-stir method. I |
| H2152 |
Telemetry system having amplitude modulation of Walsh functions |
April 4, 2006 |
| A digital communications system employing modulated Walsh functions to convey data across a communications channel. In one embodiment, the system includes a transmitter having a constellation encoder, and a Walsh constellation modulator. The constellation encoder receives a sequence of |
| H1932 |
Wettability and fluid displacement in a well |
January 2, 2001 |
| An inverter fluid that intermixes with a non-aqueous (e.g., oil) external/aqueous internal fluid to cause external/internal inversion is designed. This includes testing a selected inverter fluid with a test fluid having a composition nominally equivalent to the composition of the non |
| 7418348 |
Signal thresholding apparatus, systems, and methods |
August 26, 2008 |
| In some embodiments, an apparatus and a system, as well as a method and an article, may include selecting a plurality of signal thresholds including a product of an integer ranging from about 2 to N and a ratio of a quotient of a maximum peak amplitude of the acoustic borehole signal and |
| 7416076 |
Apparatus and method for packaging and shipping of high explosive content components |
August 26, 2008 |
| A system and method for a packaging system for the shipment of high explosive components is described. One or more explosive devices are positioned in a tubing assembly having opposed ends and a thick wall of relatively low-density fibrous material, e.g. rolled paper tube. An impact |
| 7416026 |
Apparatus for changing flowbore fluid temperature |
August 26, 2008 |
| A flowbore fluid temperature control system comprising a valve mechanism that adjusts the flow of a fluid through a flowbore. The flowbore fluid temperature control system also comprises an actuator that adjusts the valve mechanism. The flowbore fluid temperature control system also |
| 7415364 |
Process control architecture with hydrodynamic correction |
August 19, 2008 |
| Methods and systems for controlling processes related to the amount of fluid in a container subjected to externally-excited motions. Fluid level sensor measurements in processing tanks on-board boats are confused by ocean waves and swells. A hydrodynamic model of a fluid in a tank can be |
| 7413034 |
Steering tool |
August 19, 2008 |
| A steering tool for use in drilling a borehole, including a tubular housing, a tool actuating device movably supported within the housing, a plurality of hydraulically actuated steering devices circumferentially spaced about the housing, and a hydraulic control system interposed betw |
| 7413017 |
Methods and compositions for inducing tip screenouts in frac-packing operations |
August 19, 2008 |
| A method of inducing tip screenout during a frac-packing treatment comprising injecting a proppant slurry into a subterranean formation, wherein the proppant slurry comprises a proppant material, a fracturing fluid, and degradable particulates and wherein the degradable particulates |
| 7413016 |
Polymer mixtures for crosslinked fluids |
August 19, 2008 |
| Treatment fluids comprising gelling agents that comprise crosslinkable polymers and certain biopolymers, and methods of use in subterranean operations, are provided. In one embodiment, the present invention provides a method of treating a portion of a subterranean formation comprisin |
| 7413014 |
Foamed fly ash cement compositions and methods of cementing |
August 19, 2008 |
| Methods of cementing and low density foamed cement compositions therefor are disclosed. A low density foamed cement composition of the invention comprises fly ash comprising calcium oxide or calcium hydroxide, water present in an amount sufficient to form a slurry, a foaming and foam |
| 7413013 |
Surfactant-based fluid loss control agents for surfactant gels and associated fluids and methods |
August 19, 2008 |
| Of the many methods provided, in one aspect, the present invention provides a method comprising: providing a treatment fluid comprising: an aqueous base fluid, a first surfactant, and a surfactant-based fluid loss control agent capable of forming a viscoelastic fluid; and introducing |
| 7413010 |
Remediation of subterranean formations using vibrational waves and consolidating agents |
August 19, 2008 |
| Methods of remediating a subterranean formation comprising directing vibrational waves at a portion of the subterranean formation containing fines; allowing the vibrational waves to displace at least a portion of the fines; and introducing a consolidating agent into the portion of the |
| 7409991 |
Methods of using casing strings in subterranean cementing operations |
August 12, 2008 |
| 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 apparatus is a pipe |
| 7409901 |
Variable stroke assembly |
August 12, 2008 |
| A variable stroke assembly enables the piston stroke length of a positive displacement pump to be varied while maintaining a substantially constant unswept volume in the piston cylinder. Alternatively, a variable stroke assembly enables the piston stroke length of a pump or an engine to |
| 7407916 |
Foamed treatment fluids and associated methods |
August 5, 2008 |
| Foamed treatment fluids comprising water, a gas, and a foaming and foam stabilizing surfactant mixture comprising an alkali salt of an alkyl ether sulfate, wherein the alkali salt of the alkyl ether sulfate comprises an alkali salt of a C.sub.6-10 alkyl ether sulfate, and an alkali s |
| 7407020 |
Rotating systems associated with drill pipe |
August 5, 2008 |
| Methods and apparatuses for drilling a borehole are disclosed. An electric motor electrically and mechanically coupled to a wired drill pipe is provided. The electric motor couples to a shaft that rotates when power is supplied to the electric motor. The shaft is couplable to a drill bit |
| 7407010 |
Methods of coating particulates |
August 5, 2008 |
| Methods comprising: providing at least a plurality of liquid hardenable resin coated particulates that have been at least partially coated with a liquid hardenable resin component; providing at least a plurality of liquid hardening agent coated particulates that have been at least pa |
| 7407009 |
Methods of using cement compositions comprising phosphate compounds in subterranean formations |
August 5, 2008 |
| Methods of using cement compositions comprising phosphate compounds in subterranean formations are provided. An example of a method is a method of cementing in a subterranean formation. Other examples of methods include methods of avoiding the loss of circulation in a subterranean fo |
| 7405998 |
Method and apparatus for generating fluid pressure pulses |
July 29, 2008 |
| Apparatuses and methods for generating fluid pressure pulses are disclosed. An example apparatus may include a chamber that can collect fluid and an upstream ported disc coupled to a downstream end of the chamber. The upstream ported disc may rotate about a central axis. The upstream |
| 7405183 |
Methods and compositions for crosslinking polymers with boronic acids |
July 29, 2008 |
| The present invention provides a method of forming a viscosified treatment fluid comprising: providing a treatment fluid that comprises water and a gelling agent; contacting the treatment fluid with a boronic acid crosslinking agent so as to form a crosslinked gelling agent, wherein the |
| 7404855 |
Resilient cement compositions and methods of cementing |
July 29, 2008 |
| Resilient cement compositions and methods of cementing using the compositions are disclosed. A resilient cement composition of the invention comprises hydraulic cement, an aqueous rubber latex and a rubber latex stabilizing surfactant comprising an iso-dodecyl alcohol ether sulfonate |
| 7404456 |
Apparatus and method of identifying rock properties while drilling |
July 29, 2008 |
| Acoustic signals generated by drilling a bore hole with a drill bit are received at sensors placed in the drill string. The acoustic signals received by the sensors are processed, e.g. using a Fourier transform, and a characteristic of the acoustic signals is used to identify litholo |
| 7404440 |
Methods of using casing strings in subterranean cementing operations |
July 29, 2008 |
| 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 apparatus is a pipe |
| 7404437 |
Annular isolators for expandable tubulars in wellbores |
July 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 |
| 7404416 |
Apparatus and method for creating pulsating fluid flow, and method of manufacture for the appara |
July 29, 2008 |
| In one embodiment, the present invention provides an apparatus for creating pulsating fluid flow, including an inlet into which fluid flows and a chamber having an upstream end and a downstream end. The chamber is defined by a pair of outwardly-projecting sidewalls, and the inlet is |
| 7401649 |
Methods for controlling particulate migration |
July 22, 2008 |
| Methods are provided for stabilizing a portion of a subterranean formation or reducing the production of particulates from a portion of a subterranean formation comprising contacting the portion of the subterranean formation with a pre-flush fluid; contacting the portion of the subte |
| 7401646 |
Methods for reverse-circulation cementing in subterranean formations |
July 22, 2008 |
| 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; equipping the casing |
| 7399355 |
Fluid loss control additive and cement compositions comprising same |
July 15, 2008 |
| A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the polymer is a polyvinyl |
| 7398840 |
Matrix drill bits and method of manufacture |
July 15, 2008 |
| A matrix drill bit and method of manufacturing a matrix bit body from a composite of matrix materials is disclosed. Two or more different types of matrix materials may be used to form a composite matrix bit body. A first matrix material may be selected to provide optimum fracture res |
| 7398827 |
Methods for high temperature lightweight cementing |
July 15, 2008 |
| Methods for performing cementing operations in a subterranean zone under high temperature conditions include forming a cementing composition having a density of less than about 10.5 pounds per gallon, pumping the cementing composition into the subterranean zone by way of the well bore |
| 7398825 |
Methods of controlling sand and water production in subterranean zones |
July 15, 2008 |
| Methods for stabilizing portions of a subterranean formation and controlling the production of water from those subterranean formations. In one embodiment, the methods of the present invention comprise: providing a consolidating agent; introducing the consolidating agent into an unco |
| 7398680 |
Tracking fluid displacement along a wellbore using real time temperature measurements |
July 15, 2008 |
| Tracking fluid displacement along a wellbore using real time temperature measurements. A method of tracking fluid displacement along a wellbore includes the steps of: monitoring temperature in real time in the wellbore; and observing in real time a variation in temperature gradient b |
| 7396216 |
Submersible pump assembly for removing a production inhibiting fluid from a well and method for |
July 8, 2008 |
| A submersible pump assembly (100) for removing a production inhibiting fluid (102) from a well (110) and method for use of the same is disclosed. The submersible pump assembly (100) includes a composite coiled tubing (120) and a submersible pump (112) coupled to the tubing (120) that |
| 7395879 |
MWD formation tester |
July 8, 2008 |
| An apparatus including a drill collar having an outer surface, an assembly for interaction with an earth formation coupled to the drill collar, the assembly including a first member to extend beyond the drill collar outer surface and a second member to extend beyond the first member and |
| 7395861 |
Methods of cementing subterranean formations using cement compositions comprising maltodextrin |
July 8, 2008 |
| Subterranean treatment operations, and more particularly, methods of cementing subterranean formations using cement compositions including maltodextrin, are provided. An example of a method of the present invention is a method of cementing a subterranean formation, comprising: provid |
| 7395860 |
Methods of using foamed settable compositions comprising cement kiln dust |
July 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 |
| 7395712 |
Testing of bottomhole samplers using acoustics |
July 8, 2008 |
| A method and apparatus for testing a hydrocarbon sample. The apparatus includes a sheath disposed about the hydrocarbon sample container and at least one set of acoustic sensors, wherein the at least one set of acoustic sensors is secured to the sheath, and further wherein at least o |
| 7394064 |
Measuring the weight on a drill bit during drilling operations using coherent radiation |
July 1, 2008 |
| One embodiment includes an apparatus that includes a coherent radiation source to emit coherent radiation through a signal carrier that is positioned along at least a part of a length of a downhole drilling component. The apparatus also includes a receiver to receive the coherent rad |
| 7392846 |
Silicate-containing additives for well bore treatments and associated methods |
July 1, 2008 |
| Methods and compositions for use in subterranean operations, and more particularly, additives comprising one or more silicates used to treat tar resident in a well bore, and methods of use, are provided. In one embodiment, the method comprises a method of treating tar resident in a w |
| 7392842 |
Proppant suspension testing devices and methods of use |
July 1, 2008 |
| An apparatus for testing a rheological property of a fluid with a particulate includes: (a) a receptacle having a cylindrical side wall enclosed by a bottom wall defining a cavity for receiving a fluid to be tested; (b) an axial support adapted to be positioned in the cavity of the r |
| 7392840 |
Method and means to seal the casing-by-casing annulus at the surface for reverse circulation cem |
July 1, 2008 |
| A method for sealing an annulus defined between an outer casing and an inner casing, the method having steps as follows: fastening a lock ring to an anchor base, wherein the lock ring comprises a threaded fastener of the lock ring to the head; positioning the lock ring and anchor base |
| 7392135 |
Adaptive equalization of downhole acoustic receivers |
June 24, 2008 |
| Methods and apparatus are provided for reducing and/or substantially eliminating sensitivity mismatch of acoustic receivers used with acoustic sources to determine acoustic properties of geologic formations as a logging tool traverses the formations. Methods are directed to detecting |
