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| Number | Title | Issue Date |
| 7999695 | Surface real-time processing of downhole data A method and apparatus for controlling oil well drilling equipment is disclosed. One or more sensors are distributed in the oil well drilling equipment. Each sensor produces a signal. A surface processor coupled to the one or more sensors via a high speed communicat... | 08/16/2011 |
| 7439875 | Battery conservation Methods and apparatus for conserving battery energy used in transmitting signals carrying data from a downhole location, using a transmission system where a predetermined set of data is to be transmitted once during a predetermined period. The method can comprise th... | 10/21/2008 |
| 7423550 | Two sensor impedance estimation for uplink telemetry signals Measurements made with dual sensors (flow rate or pressure) are used to attenuate pump noise in a mud pulse telemetry system. ... | 09/09/2008 |
| 7369635 | Rapid discrimination preambles and methods for using the same A system, method and program are disclosed for achieving rapid bit synchronization in low power medical device systems. Messages are transmitted via telemetry between a medical device and a communication device. The synchronization scheme uses a portion of a unique ... | 05/06/2008 |
| 7363717 | System and method for using rotation sensors within a borehole A system and method for using a survey tool within a borehole is provided. The survey tool includes a plurality of rotation sensors each having a sensing axis and a direction of least acceleration sensitivity. The sensing axes of the plurality of rotation sensors ar... | 04/29/2008 |
| 7363988 | System and method for processing and transmitting information from measurements made while drilling Methods and systems are disclosed for downhole processing of measurements made in a wellbore during the construction of the wellbore. The system includes a sensors located downhole adapted to measure a two downhole parameters. The system uses a downhole processor to... | 04/29/2008 |
| 7360612 | Roller cone drill bits with optimized bearing structures 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 re... | 04/22/2008 |
| 7350410 | System and method for measurements of depth and velocity of instrumentation within a wellbore A survey tool for use in a wellbore includes a downhole portion having an axis. The downhole portion is adapted to move within the wellbore with the axis generally parallel to the wellbore. The survey tool further includes a first acceleration sensor mounted at a fi... | 04/01/2008 |
| 7347283 | Using a rotating inner member to drive a tool in a hollow outer member A rotating inner member is used to drive a downhole tool housed within the hollow outer member of a dual-member drill string. The downhole tool preferably will be adapted to receive rotational energy from the inner member. In a preferred embodiment, the downhole too... | 03/25/2008 |
| 7334652 | Roller cone drill bits with enhanced cutting elements and cutting structures Roller cone drill bits are provided with cutting elements and cutting structures optimized for efficient drilling of soft and medium formations interspersed with hard stringers. The cutting elements and cutting structures may be satisfactorily used to drill downhole... | 02/26/2008 |
| 7322410 | Controllable production well packer An apparatus and method for operating an electrically powered device in a packer using the piping structure of the well as an electrical conductor for providing power and/or communications. The electrically powered device may comprise an electrically controllable va... | 01/29/2008 |
| 7301338 | Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis Data from a string of multiple formation evaluation data sensor are evaluated by an expert system. Based on the analysis, the logging speed is increased if all the sensors justify it, and is reduced if any of the sensors require a reduced logging speed. Alternativel... | 11/27/2007 |
| 7272504 | Real-time imaging while drilling Measurements made by a formation evaluation sensor downhole are processed to produce an image and a bitstream characterizing the image is transmitted uphole. The parameters used in the downhole processing are dynamically alterable. ... | 09/18/2007 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7269095 | Synchronization of seismic data acquisition systems A network distributed seismic data acquisition system comprises seismic receivers connected to remote acquisition modules, receiver lines, line tap units, base lines, a central recording system and a seismic source event generation unit synchronized to a master cloc... | 09/11/2007 |
| 7259688 | Wireless reservoir production control A reservoir production control system includes a plurality of wells for producing a reservoir linked to a central computer over a downhole communication network and a surface communication network. Both the downhole and the surface communication networks are wireles... | 08/21/2007 |
| 7209840 | Systems and methods for providing remote monitoring of electricity consumption for an electric meter A system for providing remote monitoring of electricity consumption is provided. In one embodiment the system may comprise electric meters, communication devices having a unique address and defining a wireless communication network, and a site controller. Each elect... | 04/24/2007 |
| 7209834 | Method and apparatus for estimating distance to or from a geological target while drilling or logging A system and method estimates the distance between a borehole and a subsurface boundary of interest in a geophysical region. In one embodiment, available existing sensor data for the geophysical region is used to create a resistivity model of the region, with the mo... | 04/24/2007 |
| 7205762 | Downhole high resolution NMR spectroscopy with polarization enhancement An apparatus and method is discussed for characterizing a fluid sample downhole of aliphatic hydrocarbon compounds, aromatic hydrocarbon compound, or connate mud filtrates containing carbon-13 isotopes using an enhanced nuclear magnetic resonance (NMR) signal on a m... | 04/17/2007 |
| 7201221 | Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ... | 04/10/2007 |
| 7193525 | Methods and apparatus for downhole inter-tool communication A method and apparatus for communicating between downhole tools without the necessity of routing the communication through a surface module. Communications sent by downhole tools are examined and extracted downhole. If the communications are intended for other downh... | 03/20/2007 |
| 7168507 | Recalibration of downhole sensors In downhole drilling tools, a first set of inexpensive and/or relatively small sensors that typically have lower accuracy and higher drift than conventional downhole sensors are located in the drill string adjacent to the bit. A second set of highly accurate sensors... | 01/30/2007 |
| 7170411 | Method of and system for rapidly locating all passive underground electronic marker types A method of and system for rapidly locating all passive underground electronic marker types in an area under survey may locate various marker types simultaneously. In accordance with one aspect of the present invention, a marker locator may sequentially transmit and... | 01/30/2007 |
| 7170424 | Oil well casting electrical power pick-off points A power supply apparatus is provided for supplying power and communications within a first piping structure. An external power transfer device is positioned around the first piping structure and is magnetically coupled to an internal power transfer device. The inter... | 01/30/2007 |
| 7147059 | Use of downhole high pressure gas in a gas-lift well and associated methods A gas-lift petroleum well and method for producing petroleum products using downhole pressurized gas to provide lift. The gas-lift well having a well casing, a production tubing, a packer, and a gas-lift valve. The well casing extends within a wellbore of the well, ... | 12/12/2006 |
| 7132958 | Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation A method and a downhole telemetry system a downhole telemetry system using discrete multitone modulation for transmitting a data stream over a plurality of transmission modes is provided. The downhole telemetry system includes a downhole transmitter, a cable, and a ... | 11/07/2006 |
| 7126332 | Downhole high resolution NMR spectroscopy with polarization enhancement An apparatus and method is discussed for characterizing a fluid sample downhole of aliphatic hydrocarbon compounds, aromatic hydrocarbon compound, or connate mud filtrates containing carbon-13 isotopes using an enhanced nuclear magnetic resonance (NMR) signal on a m... | 10/24/2006 |
| 7114561 | Wireless communication using well casing A petroleum well having a borehole extending into a formation is provided. A piping structure is positioned within the borehole, and an induction choke is positioned around the piping structure downhole. A communication system is provided along the piping structure ... | 10/03/2006 |
| 7093672 | Systems for deep resistivity while drilling for proactive geosteering A method for geosteering while drilling a formation includes generating a plurality of formation models for the formation, where each of the plurality of the formation models includes a set of parameters and a resistivity tool therein and locations of the resistivit... | 08/22/2006 |
| 7075454 | Power generation using batteries with reconfigurable discharge A petroleum well for producing petroleum products that incorporates a system adapted to provide power to a downhole device in the well. The system includes a current impedance device and a downhole power storage device. The current impedance device is positioned suc... | 07/11/2006 |
| 7073594 | Wireless downhole well interval inflow and injection control An apparatus and methods of electrically controlling downhole well interval inflow and/or injection. The downhole controllable well section having a communications and control module, a sensor, an electrically controllable valve and an induction choke. The electrica... | 07/11/2006 |
| 7068183 | Drill string incorporating an acoustic telemetry system employing one or more low frequency acoustic attenuators and an associated method of transmitting data A drill pipe forms an acoustic transmission channel for data to be transmitted from a downhole transceiver to a surface transceiver. By positioning a first low frequency acoustic attenuator between a drill bit and the downhole transceiver, acoustic noise generated b... | 06/27/2006 |
| 7059407 | Method and apparatus for stimulation of multiple formation intervals The invention discloses methods of, as well as apparatus and systems for, perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore by deploying within said wellbore a bottom-hole assembly (“BHA”) having a perfo... | 06/13/2006 |
| 7055592 | Toroidal choke inductor for wireless communication and control An induction choke in a petroleum well where a voltage potential is developed across the choke to power and communicate with devices and sensors in the well. Preferably, the induction choke is a ferromagnetic material and acts as an impedance to a time-varying curre... | 06/06/2006 |
| 7054750 | Method and system to model, measure, recalibrate, and optimize control of the drilling of a borehole 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 ... | 05/30/2006 |
| 7053767 | System and method for monitoring and controlling remote devices The present invention is generally directed to a system for monitoring a variety of environmental and/or other conditions within a defined remotely located region. In accordance with one aspect of the invention, a system is configured to monitor utility meters in a ... | 05/30/2006 |
| 7040390 | Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ... | 05/09/2006 |
| 7028789 | Drilling assembly with a steering device for coiled-tubing operations The present invention provides a drilling assembly for drilling deviated wellbores. The drilling assembly includes a drill bit at the lower end of the drilling assembly. A drilling motor provides the rotary power to the drill bit. A bearing assembly of the drilling ... | 04/18/2006 |
| 7025152 | Using a rotating inner member to drive a tool in a hollow outer member A rotating inner member is used to drive a downhole tool housed within the hollow outer member of a dual-member drill string. The downhole tool preferably will be adapted to receive rotational energy from the inner member. In a preferred embodiment, the downhole too... | 04/11/2006 |
| 7026951 | Data telemetry system for multi-conductor wirelines An improved data telemetry system for multi-conductor wirelines to achieve satisfactory transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a firs... | 04/11/2006 |
