| Patent Number |
Title Of Patent |
Date Issued |
| 7055598 |
Fluid flow control device and method for use of same |
June 6, 2006 |
| A fluid flow control device (60) for use in a wellbore to control the inflow of production fluids comprises a sand control screen (62) having a base pipe (64) with a first set of openings (66) that allows the production fluids to flow therethrough and a sleeve (74) coaxially disposed |
| 7055596 |
Packer releasing methods |
June 6, 2006 |
| Methods of releasing a well tool set in a wellbore are provided. In various embodiments, a well tool, such as a packer, is released from sealing and gripping engagement within a wellbore using alternate methods. A dual-string packer is described in which the packer may be released by |
| 7054751 |
Methods and apparatus for estimating physical parameters of reservoirs using pressure transient |
May 30, 2006 |
| A before-closure pressure-transient leakoff analysis for a fracture-injection/falloff test is used to mitigate the detrimental effects of pressure-dependent fluid properties on the evaluation of physical parameters of a reservoir. A fracture-injection/falloff test consists of an inje |
| 7054750 |
Method and system to model, measure, recalibrate, and optimize control of the drilling of a bore |
May 30, 2006 |
| Methods and systems for controlling the drilling of a borehole are disclosed. The methods employ the assumption that nonlinear problems can be modeled using linear equations for a local region. Common filters can be used to determine the coefficients for the linear equation. Results |
| 7053787 |
Slickline signal filtering apparatus and methods |
May 30, 2006 |
| A signal filtering apparatus and associated methods enable noise to be significantly reduced or eliminated from a signal. In a described embodiment, the signal is indicative of tension in a slickline. An adaptive filter is used to effectively cancel the noise from the signal, using a |
| 7052543 |
Permeable cement composition and method for preparing the same |
May 30, 2006 |
| The current invention provides an improved permeable cement composition for formation of downhole sand screens. The improved composition includes an effective amount of a surfactant. Addition of the surfactant to the permeable cement composition yields at least a pumpable slurry with a |
| 7051810 |
Downhole force generator and method for use of same |
May 30, 2006 |
| A downhole force generator (60) adapted to be moved to a target location within a wellbore (70) for interaction with a well tool (74) previously positioned in the wellbore (70) comprises a downhole power unit (62) having a moveable shaft (68). An anchor (64) is operably associated with |
| 7048432 |
Method and apparatus for hydrating a gel for use in a subterranean formation |
May 23, 2006 |
| The present invention relates to a method and system for hydrating a gel for treating a wellbore penetrating a subterranean formation. The method includes directing a base fluid through an inlet into a mixer having an inner chamber housing a plurality of impellers extending radially from |
| 7048066 |
Downhole sealing tools and method of use |
May 23, 2006 |
| A downhole tool apparatus for insertion into and sealing engagement with a wellbore. The downhole tool includes upper and lower casing engaging members and an intervening sealing member. In one aspect the intervening sealing member may be a deformable material. In another aspect, the |
| 7048054 |
Cement compositions containing coarse barite, process for making same and methods of cementing i |
May 23, 2006 |
| Cement comprising barite, a process for preparing such cement, and methods of cementing in a subterranean formation or well bore using such cement are provided. The cement is prepared by introducing coarse barite to the cement, the course barite comprising particles having a particle siz |
| 7048053 |
Zeolite compositions having enhanced compressive strength |
May 23, 2006 |
| Zeolite compositions having enhanced compressive strength and methods therefor are provided. In particular, methods and compositions for wellbore treating fluids, especially settable spotting fluids having enhanced compressive strength are provided. |
| 7048048 |
Expandable sand control screen and method for use of same |
May 23, 2006 |
| An expandable sand control screen (100) that is positionable within a wellbore comprises a fluid permeable generally tubular member (102) that is expanded downhole. A filtering assembly is disposed exteriorly of the generally tubular member (102). The filtering assembly includes a filter |
| 7046165 |
Method for collecting geological data ahead of a drill bit |
May 16, 2006 |
| A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the receiver. The casi |
| 7046164 |
Method and system for well telemetry |
May 16, 2006 |
| Methods and systems for borehole telemetry are disclosed. In one embodiment, a borehole telemetry system includes a coiled tubing string that is located in the borehole. A receiver is coupled to the coiled tubing string. In one possible implementation, the receiver is located inside |
| 7046112 |
Logging tool induction coil form |
May 16, 2006 |
| The present invention is directed to a logging tool induction coil form having a coating layer, which is easy to form to tight tolerances, bonded to at least a portion of the outer surface of the ceramic hollow cylindrical core. A plurality of parallel circumferential grooves are mac |
| 7046010 |
Multi-mode microresistivity tool in boreholes drilled with conductive mud |
May 16, 2006 |
| A multi-mode resistivity tool measures at multiple depths into the near-borehole formation. By use of a four mode tool, measuring to four depths at the formation, a more accurate invasion zone resistivity measurement may be made than previously known. The tool itself is shown as incl |
| 7044242 |
Roller cone bits with reduced packing |
May 16, 2006 |
| A roller-cone drill bit in which a large groove is machined into the backface of each cone, near the crack where the cone meets the arm assembly. By making the outer lip of this crack more exposed to the open volume of turbulent flow, turbulence near the crack is increased, deposit o |
| 7044230 |
Method for removing a tool from a well |
May 16, 2006 |
| A method of treating a subterranean formation penetrated by a wellbore, according to which a tool is fabricated of a material that breaks up or dissolves in the presence of a fluid and is inserted in the wellbore for performing a function in the wellbore. The fluid is then introduced to |
| 7044224 |
Permeable cement and methods of fracturing utilizing permeable cement in subterranean well bores |
May 16, 2006 |
| The present invention relates to methods of stimulating a subterranean formation. More particularly, but not by way of limitation, the present invention relates to methods of fracturing subterranean formations utilizing a fracturing fluid comprising a permeable cement composition tha |
| 7044222 |
Composition for controlling wellbore fluid and gas invasion and method for using same |
May 16, 2006 |
| Compositions for controlling wellbore fluid and gas invasion including methods for using the compositions. The compositions are initially flowable slurries preferably comprising about 70 to 30% by weight of magnesium oxychloride and about 70 to 30% by weight of water. The composition |
| 7044220 |
Compositions and methods for improving proppant pack permeability and fracture conductivity in a |
May 16, 2006 |
| The present invention relates to enhancing fluid flow from subterranean formations. More particularly, this invention relates to providing improved proppant matrixes within fractures in a subterranean formation. An example of the methods of increasing the conductivity of a fracture in |
| 7040419 |
Foamed compositions and methods of use in subterranean zones |
May 9, 2006 |
| The current invention provides improved methods and compositions for completing a well bore. In one aspect, the current invention provides a process for preparing a foamed well composition. The process utilizes air to foam the composition after the air has been treated to lower the o |
| 7040405 |
Permeable cement composition and method for preparing the same |
May 9, 2006 |
| The current invention provides an improved permeable cement composition for formation of downhole sand screens. The improved composition includes an effective amount of a surfactant. Addition of the surfactant to the permeable cement composition yields at least a pumpable slurry with a |
| 7040404 |
Methods and compositions for sealing an expandable tubular in a wellbore |
May 9, 2006 |
| Methods and compositions are provided for sealing an expandable tubular in a wellbore wherein the methods basically comprise placing the expandable tubular in the wellbore, placing a resilient sealing composition into the wellbore, expanding the expandable tubular and allowing the sealin |
| 7040403 |
Methods for controlling migration of particulates in a subterranean formation |
May 9, 2006 |
| The present invention relates to methods for controlling the migration of particulates, such as proppant and formation sands, from subterranean formations using solutions of tackifying materials. One embodiment of the present invention provides a method of treating a subterranean formati |
| 7038455 |
Electromagnetic wave resistivity tool |
May 2, 2006 |
| A method and system of operating an electromagnetic resistivity tool wherein at least one transmitting antenna of the tool is selectively operable at three or more resonant frequencies for better resistivity profiling of a formation. |
| 7038332 |
Power discriminating systems |
May 2, 2006 |
| The present invention relates to a control system for selectively supplying electrical power in a remote environment. The system comprises a plurality of electrical circuits, each designed to operate over a unique frequency passband. Power transmitted within the frequency passband of |
| 7036597 |
Systems and methods for treating a subterranean formation using carbon dioxide and a crosslinked |
May 2, 2006 |
| The present invention relates to fluid systems comprising a first fluid comprising carbon dioxide and a second fluid comprising an alkaline crosslinked fluid. The fluid combinations of the present invention may be used, for example, in hydraulic fracturing, frac-packing, and gravel p |
| 7036592 |
High strength particles and methods of their use in subterranean operations |
May 2, 2006 |
| The present invention relates to composite particulates comprising a base material and a nanoparticle material. One embodiment of the present invention provides a method of using a sintered composite particulate in a subterranean application comprising providing a slurry comprising a |
| 7036590 |
Two stage subterranean zone fracturing fluids and methods |
May 2, 2006 |
| The present invention discloses two stage subterranean zone fracturing fluids and methods. A two stage subterranean zone fracturing fluid of the invention comprises a first stage fluid comprising a foamed liquid containing a water soluble gel breaker and a second stage fluid that com |
| 7036589 |
Methods for fracturing stimulation |
May 2, 2006 |
| The present invention provides methods for fracturing and for reducing the production of both water and particulates from subterranean formations. The methods are particularly useful in conjunction with subterranean formations surrounding wellbores and fractures. The methods comprise the |
| 7036588 |
Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using |
May 2, 2006 |
| Methods and compositions relating to fluid loss control operations are provided. Examples of compositions may comprise ceramic particulate bridging agents and improved fluid loss control additives, and methods of using those compositions to provide fluid loss control. An embodiment of |
| 7036587 |
Methods of diverting treating fluids in subterranean zones and degradable diverting materials |
May 2, 2006 |
| Methods of diverting treating fluids in subterranean zones penetrated by well bores are provided. The methods basically comprise the following steps. A degradable particulate diverting material is placed in a subterranean zone that contains releasable water. A treating fluid is then |
| 7036586 |
Methods of cementing in subterranean formations using crack resistant cement compositions |
May 2, 2006 |
| The present invention relates to subterranean cementing operations, and more particularly, to methods of cementing in subterranean formations using cement compositions that autogenously cure voids that may form in such cement compositions. In one embodiment, the present invention pro |
| 7036578 |
Tubing guide and coiled tubing injector |
May 2, 2006 |
| A coiled tubing injector assembly includes a coiled tubing injector and a tubing guide. The tubing guide has an automatic clamping mechanism that includes a pair of clamping slips. The clamping slip will automatically move from an open position in which coiled tubing can pass through the |
| 7035778 |
Method of assaying downhole occurrences and conditions |
April 25, 2006 |
| A method of assaying work of an earth boring bit of a given size and design including establishing characteristics of the bit of given size and design. The method further includes simulating a drilling of a hole in a given formation as a function of the characteristics of the bit of |
| 7032689 |
Method and system for predicting performance of a drilling system of a given formation |
April 25, 2006 |
| 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 |
| 7032675 |
Thermally-controlled valves and methods of using the same in a wellbore |
April 25, 2006 |
| Methods of operating a downhole tool comprise thermally-controlling the tool by sensing a temperature and controlling the tool in response to the sensed temperature. Thermally-controlled downhole tools comprise a control element responsive to a change in temperature that control flow |
| 7032672 |
Subsurface safety valve having a communication tool accessible non annular hydraulic chamber |
April 25, 2006 |
| A tubing retrievable safety valve (50) having a non annular hydraulic chamber (60) in a sidewall portion thereof is operable to received a communication tool (100) therein such that relative rotation between at least a portion of the communication tool (100) and the tubing retrievabl |
| 7032669 |
Compositions and methods for preventing coagulation of water-in-oil emulsion polymers in aqueous |
April 25, 2006 |
| 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 |
| 7032664 |
Nanocomposite particulates and methods of using nanocomposite particulates |
April 25, 2006 |
| The present invention relates to particulate composites comprising at least one resin and at least one nanoparticle material. Some embodiments of the present invention provide methods of treating a portion of a subterranean formation comprising providing a nanocomposite particulate c |
| 7032663 |
Permeable cement and sand control methods utilizing permeable cement in subterranean well bores |
April 25, 2006 |
| This invention relates to improved methods for completing wells in unconsolidated subterranean zones. More specifically, the present invention relates to cement compositions useful in subterranean applications, and more particularly, to permeable cement compositions and methods for f |
| 7032499 |
Hydraulic circuit and method for operating a sealing device |
April 25, 2006 |
| A hydraulic circuit and method for operating a hydraulic device according to which fluid is passed from a source to the device while some of the fluid is passed to a valve that is adjustable to control the amount of fluid passed to it and therefore the amount of fluid passed to the d |
| 7030582 |
Digital adaptive sensorless commutational drive controller for a brushless DC motor |
April 18, 2006 |
| Devices and methods for controlling brushless, sensorless DC motors are disclosed. In one embodiment, an electrical motor is provided with a rotor, a stator, and a semiconductor on insulator (SOI) application-specific integrated circuit (ASIC). The ASIC is configured to energize stat |
| 7028774 |
Methods for controlling water and particulate production |
April 18, 2006 |
| The present invention provides methods of reducing the production of both water and particulates from subterranean formations; the methods are particularly useful in conjunction with subterranean formations surrounding wellbores and fractures. The methods comprise the steps of applyi |
| 7026952 |
Downhole telemetry system using discrete multi-tone modulation having repeated symbols |
April 11, 2006 |
| A downhole telemetry system and method using discrete multi-tone modulation having repeated symbols. The system includes a surface receiver, a cable, and a downhole transmitter coupled to the surface receiver via the cable. The transmitter communicates a time-domain signal to the rec |
| 7026820 |
Method and apparatus for minimizing direct coupling for downhole logging devices |
April 11, 2006 |
| A method and apparatus for minimizing direct coupling between transmitters and receivers on a downhole logging tool are disclosed. One embodiment includes a transmitter, a bucking device, and a plurality of receivers, where signals may be directly coupled from the transmitter into the |
| 7026272 |
Methods and compositions for sealing oil containing subterranean zones |
April 11, 2006 |
| The present invention provides methods and compositions for sealing subterranean zones containing oil to prevent the uncontrolled flow of fluids into or from the zones. The compositions basically comprise water, a phosphonic acid ester, a multivalent metal ion releasing compound and |
| 7025143 |
Method for removing a deposit using pulsed fluid flow |
April 11, 2006 |
| The pressure reading tool includes a housing with an interior chamber and an orifice extending from the chamber to the exterior of the housing. A pulse member with a magnetostrictive ring and an excitation source are disposed within the chamber to produce a highly agitated fluid discharg |
| 7025134 |
Surface pulse system for injection wells |
April 11, 2006 |
| The present invention relates to petroleum recovery operations, and more particularly, to the use of pulse technology to enhance the effectiveness of waterflooding operations. The systems of the present invention generally comprise an injection means for continually injecting a fluid |
