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| Number | Title | Issue Date |
| 7301345 | While-drilling methodology for estimating formation pressure based upon streaming potential measurements Logging-while-drilling apparatus and methodologies for measuring streaming potential in an earth formation are provided. The apparatus and methodologies can be utilized to find information relevant to the drilling operations. In particular, since the streaming poten... | 11/27/2007 |
| 7263881 | Single probe downhole sampling apparatus and method A single probe system is utilized to quickly obtain uncontaminated formation fluid samples. The single probe includes an outer guard tube and an inner sampling tube which is slightly recessed relative to the outer tube such that the pressure at the front face of the... | 09/04/2007 |
| 7243718 | Methods for locating formation fractures and monitoring well completion using streaming potential transients information Earth formations are characterized by using an array of electrodes which can measure streaming potentials in the formation, and by interpreting the data obtained by the electrodes. The electrodes are placed on a wireline tool, a LWD tool, or in a fixed manner about ... | 07/17/2007 |
| 7221158 | Permeability determinations from nuclear magnetic resonance measurements Permeability determinations are made from NMR measurements of a logging tool. The NMR measurements are used to find an observed critical spin—spin relaxation time which is used in conjunction with an in situ determination of surface relaxivity of a rock in order t... | 05/22/2007 |
| 7168487 | Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore Methods, apparatus, and systems for obtaining information regarding a formation, a casing, or fluid within the casing are provided which utilize an interrogator and one or more sensing devices attached to a casing in a wellbore. The interrogator is located within an... | 01/30/2007 |
| 7152466 | Methods and apparatus for rapidly measuring pressure in earth formations Methods and apparatus for rapidly measuring pressure in earth formations are disclosed. According to a first embodiment of the apparatus, a probe is provided with a movable piston having a sensor built into the piston. According to a second embodiment of the apparat... | 12/26/2006 |
| 7142306 | Optical probes and probe systems for monitoring fluid flow in a well Several optical probes useful in downhole applications are provided. A first probe has a tip in the form of a cubical corner with the diagonal of the cubical corner aligned with the axis of the probe. A second probe has a tip formed in a 45° cone. In these designs,... | 11/28/2006 |
| 7134500 | Formation fluid characterization using flowline viscosity and density data an oil-based mud environment A method for characterizing formation fluid using flowline viscosity and density data in an oil-based mud environment includes: making an initial estimate of the density and viscosity of the individual components of the sampled fluid; measuring the volume fractions,... | 11/14/2006 |
| 7120541 | Sonic well logging methods and apparatus utilizing parametric inversion dispersive wave processing Methods and related apparatus for generating dispersion curves and conducting shear slowness logging are set forth. The methods include backpropagating detected dispersive waveforms in the Fourier domain while accounting for dispersion in an anisotropic and inhomoge... | 10/10/2006 |
| 7096092 | Methods and apparatus for remote real time oil field management A method of managing oil fields include installing oil field sensors, coupling them to a local CPU having memory, programming the CPU for data collection and data analysis, and coupling local oil field CPUs to a web server. Human experts are granted access to oil fi... | 08/22/2006 |
| 7081615 | Methods and apparatus for the downhole characterization of formation fluids Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. A borehole tool is used to acquire a sample of fluid in the formation. Compositional analysis of the fluid sample is conducted to provide a dete... | 07/25/2006 |
| 7075062 | Apparatus and methods for downhole determination of characteristics of formation fluids An oil sample is subjected to nuclear electromagnetic irradiation downhole, and the electron and/or mass density of the oil sample is determined by measuring the attenuation of the irradiation and relating the attenuation to the electron density. If the irradiation ... | 07/11/2006 |
| 7066282 | Apparatus and methods for measuring formation characteristics in presence of conductive and non-conductive muds Tools for investigating an earth formation in the presence of either oil-base or water-base mud include a circuit which induces current into the formation in a focused manner, and a sensor electrode which is isolated from the circuit, at least partially surrounded b... | 06/27/2006 |
| 7013723 | Apparatus and methods for canceling the effects of fluid storage in downhole tools The effects of storage on the interpretation of data obtained at observation probes of a borehole tool are eliminated by controlling the storage volumes relative to the observation probes. For a homogeneous medium, the effect of storage on the interpretation of data... | 03/21/2006 |
| 6978833 | Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore Improved methods, apparatus, and systems for obtaining information regarding a formation, a casing, or fluid within the casing utilize an interrogator and one or more sensing devices attached to a casing in a wellbore. The interrogator, which is located and typicall... | 12/27/2005 |
| 6898339 | Multiple mode pre-loadable fiber optic pressure and temperature sensor A multiple mode pre-loadable fiber optic pressure and temperature sensor includes a generally cylindrical structure having at least one compression element, a fiber optic having a Bragg grating in contact with one side of the compression element, a diaphragm in cont... | 05/24/2005 |
| 6850317 | Apparatus and methods for determining velocity of oil in a flow stream Apparatus and methods for measuring oil flow velocity in a well are provided which utilize fluorescence quenching. A marker which quenches the natural fluorescence of crude oil is chosen and injected into the oil flow at a first location. At a second location, the o... | 02/01/2005 |
| 6829570 | Oilfield analysis systems and methods An oilfield data analysis system is based on a four-tier software model which includes a “shared earth model” and a federation of “directory services”. The first tier is a universal graphical user interface (GUI) which can operate on any inexpensive computer... | 12/07/2004 |
| 6826486 | Methods and apparatus for predicting pore and fracture pressures of a subsurface formation A method of predicting values of formation parameters (e.g., compressional velocity, density, pore pressure, and fracture pressure) as a function of depth includes generating an initial prediction of a profile of the formation parameters and uncertainties associated... | 11/30/2004 |
| 6775578 | Optimization of oil well production with deference to reservoir and financial uncertainty Methods for optimization of oil well production with deference to reservoir and financial uncertainty include the application of portfolio management theory to associate levels of risk with Net Present Values (NPV) of the amount of oil expected to be extracted from ... | 08/10/2004 |
| 6246048 | Methods and apparatus for mechanically enhancing the sensitivity of longitudinally loaded fiber optic sensors An optical fiber is provided with a Bragg grating formed along a portion of its core and a mechanical structure arranged adjacent to the Bragg grating for amplifying longitudinal strain on the fiber in the vicinity of the grating. The mechanical structure... | 06/12/2001 |
| 6073089 | Systems and methods for adaptive profiling, fault detection, and alert generation in a changing environment which is measurable by at least two different measures of state Systems and methods for detecting changes, and in particular faults, in a changing environment include constructing a profile of the environment using observations made during no fault conditions. A range of values for one or more "trusted" variables are ... | 06/06/2000 |
| 5871471 | Disposable value assembly for reusable surgical trocar A surgical trocar assembly includes a disposable valve assembly, a cannula assembly, and a trocar with a handle. The cannula assembly includes a cannula base having a valve assembly coupling device at its proximal end, and a cannula extending from its dis... | 02/16/1999 |
| 5836309 | Blood and other body fluid containment tray A containment tray includes a contoured cradle having a floor surface and a drain portion, an entrance portion, a support portion situated between the entrance portion and the cradle, a raised rim, and a lower rim. The raised rim is provided around the cr... | 11/17/1998 |
| 5818884 | High speed synchronous digital data bus system having unterminated data and clock buses A high speed synchronous digital bidirectional data bus system is provided and includes an M-bit unterminated data bus, an unterminated standing sine wave clock bus, and a plurality of integrated circuit bus interfaces. Each IC bus interface is preferably... | 10/06/1998 |
| 5783778 | Cable sealing and locking device A cable locking and sealing device has an elongate body of elastomeric material formed with at least one through-passage for receiving a cable and at least one longitudinal slit extending down at least a portion of its length. The interior of the through ... | 07/21/1998 |
| 5774721 | Method of communication between processors in a distributed processing system having a host processor and at least one object oriented processor Distributed processing systems having a host processor and at least one object oriented processor are disclosed. An object oriented processor according to the invention has a communications interface, an intelligent message handler, and a task-specific fu... | 06/30/1998 |
| 5768327 | Method and apparatus for optically counting discrete objects An object counter includes a feeding funnel having a frustroconical section, the narrow end of which is coupled to a substantially vertical feeding channel having a substantially rectangular cross section. A pair of linear optical sensor arrays are arrang... | 06/16/1998 |
| 5754785 | Communications network equipment In accord with the objects of the invention, methods and apparatus for controlling communications network equipment are provided. The apparatus is used in a telecommunications network having a plurality of coupled nodes and a network controller coupled to... | 05/19/1998 |
| 5752429 | Fuel injection pump with improved shaft seal system A fuel injection pump includes a casing; a drive shaft rotatably mounted in the casing and extending from a drive receiving end which is located outside of the casing to a point inside the casing; and first and second spaced apart seals each for preventin... | 05/19/1998 |
| 5746216 | Endoscopic multiple sample bioptome with enhanced biting action An endoscopic multiple sample bioptome includes a hollow outer member and an axially displaceable inner member extending therethrough. The proximal ends of the outer and inner members are coupled to an actuator for axially displacing one relative to the o... | 05/05/1998 |
| 5742613 | Memory array of integrated circuits capable of replacing faulty cells with a spare A fault tolerant random access data storage system comprises a plurality of rows of memory chips 31 plus a first spare row of chips 32 and a second spare row of chips 33, each chip comprising an array of memory locations. A controller 25 addresses the chi... | 04/21/1998 |
| 5741286 | Laparoscopic instrument kit including a plurality of rigid tubes A laparoscopic surgical instrument includes an actuation handle, a control member, a flexible tube, a rigid tube, and an end effector assembly. The control member extends through the flexible tube, and the actuation handle is coupled to the control member... | 04/21/1998 |
| 5741333 | Self-expanding stent for a medical device to be introduced into a cavity of a body A self-expanding stent is provided for introduction into a cavity of a human body. The stent has a tubular body which is radially expansible and axially retractable between a working state and a resting state. The tubular body has first and second plaited... | 04/21/1998 |
| 5729334 | Fraud-proof identification system A fraud-proof identification system is provided with a point-to-point in focus imaging system preferably a line tracking arrangement for imaging skin profiles particularly of the thumb-top which contains relatively many continuous lines and avoids mental ... | 03/17/1998 |
| 5725509 | Air introduction system for medical needles An air introduction system for a medical needle assembly is provided and includes a flexible bladder, and a male luer assembly with an air valve which is biased to allow air to enter the air introduction system but not to exit. The air introduction system... | 03/10/1998 |
| 5724362 | Apparatus and method employing a window reset for excessive bit error rate alarm detection and clearing Methods and apparatus for generating and clearing an excessive bit error rate (EBER) alarm are provided and utilize a reset window algorithm. The BIP-8 bytes (e.g., B2 bytes) of incoming data blocks (each block being B frames long) of an STSn telecommunic... | 03/03/1998 |
| 5719918 | Short message transaction handling system A transaction handling system (THS) for use in a cellular telephone network using Short Messages is described. The THS comprises means for receiving digitally encoded information from one or more sources, such as magnetically encoded credit card informati... | 02/17/1998 |
| 5716374 | Stamped clevis for endoscopic instruments and method of making the same A stamped clevis is made from a stainless steel sheet which is cut (stamped) to form at least one relatively narrow distally extending arm and at least one relatively broad proximal base. The distal arm is provided with at least one mounting hole for rece... | 02/10/1998 |
| 5715416 | User definable pictorial interface for a accessing information in an electronic file system A pictorial user interface for accessing information in an electronic file system provides a pictorial image which is linked to a file directory and which identifies the file directory. Objects in the pictorial image are icons linked to file objects and a... | 02/03/1998 |
