Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7764572 | Methods and systems for acoustic waveform processing A technique for processing acoustic waveforms includes: (a) transforming at least a portion of the acoustic waveforms to produce frequency-domain signals; (b) obtaining a model dispersion curve based on a borehole-formation model having a set of borehole-formation p... | 07/27/2010 |
| 7688674 | Methods and apparatus for performing moving checkshots Methods and apparatus for creating a velocity profile of a formation surrounding a borehole by checkshot measurements while moving the tool along the borehole. A conveyance and a sensor section are configured to move the sensor section in the borehole. At least one ... | 03/30/2010 |
| 7687770 | Methods and apparatus for multi dimension fluorescence spectrum measurement downhole Some principles described herein contemplate implementation of downhole imaging for the characterization of formation fluid samples in situ, as well as during flow through production tubing, including subsea flow lines, for short term investigation, permanent, and/o... | 03/30/2010 |
| 7687769 | Methods and apparatus for multi dimension fluorescence spectrum measurement and correlations downhole Some principles described herein contemplate implementation of downhole imaging for the characterization of formation fluid samples in situ, as well as during flow through production tubing, including subsea flow lines, for short term investigation, permanent, and/o... | 03/30/2010 |
| 7675030 | Logging system and method for in-situ fluids sensing through optical fiber with attenuation compensation A method for optically sampling characteristics of subsurface fluids within a wellhole using continuous, non-pulsed light transmitted downhole in optical fibers for both sampling and reference light channels for accurate attenuation compensation. ... | 03/09/2010 |
| 7673679 | Protective barriers for small devices Protective barriers for small devices, such as sensors, actuators, flow control devices, among others, protect the devices from erosive and/or corrosive fluids, for example, formation fluids under harsh downhole conditions. The protective barriers include protective... | 03/09/2010 |
| 7672193 | Methods and systems for processing acoustic waveform data Methods and systems for taking acoustic measurements related to subterranean formations. The methods and systems provide extracting a portion of the acoustic measurements based on predetermined parameters for selecting reflected arrival waves in the acoustic measure... | 03/02/2010 |
| 7669653 | System and method for maintaining zonal isolation in a wellbore The invention concerns a system or a method for maintaining zonal isolation in a wellbore. According to the invention, the system comprises, at a specific location along said wellbore, a sealing element, said sealing element being able to deform both during and afte... | 03/02/2010 |
| 7669468 | Measuring mud flow velocity using pulsed neutrons The invention relates to methods and apparatus for determining downhole mud flow rates and other downhole parameters. A method for determining a downhole parameter includes operating a pulsed neutron generator (6), pulsing the pulsed neutron generator (6 | 03/02/2010 |
| 7668043 | Methods and systems for sonic log processing Techniques for processing sonic waveform data include processing the data based on an initial set of formation-borehole parameters, to produce initial coherence peak attributes, wherein the processing is performed in a borehole; sending the initial coherence peak at... | 02/23/2010 |
| 7667462 | Nuclear magnetic resonance module A nuclear magnetic resonance apparatus that may be used in connection with a variety of different tools, including a down-hole side-wall coring tool as well as with manufacturing process controllers. In one embodiment, the nuclear magnetic resonance apparatus may in... | 02/23/2010 |
| 7660199 | Microseismic event detection and location by continuous map migration The present invention provides methods and systems for microseismic hydraulic fracture monitoring in real-time. The methods and systems of the present invention may include continuous map migration of recorded microseismic signals. The methods and systems provide ro... | 02/09/2010 |
| 7660198 | Passive seismic event detection A method of identifying passive seismic events in seismic data that contains at least first seismic data traces acquired at a first seismic receiver and second seismic data traces acquired at a second receiver spatially separated from the first receiver comprises de... | 02/09/2010 |
| 7660196 | Methods for processing dispersive acoustic waveforms A method for processing acoustic data comprising applying a dynamic filter band. The method and apparatus may be particularly adapted to processing sonic data to measure formation slowness in a borehole. ... | 02/09/2010 |
| 7656160 | Determining properties of earth formations using the electromagnetic coupling tensor A system and method to determine earth formation properties by positioning a logging tool within a wellbore in the earth formation, the logging tool having a tool rotation axis and a first, a second, and a third tilted transmitter coil, and a tilted receiver coil; r... | 02/02/2010 |
| 7654321 | Formation fluid sampling apparatus and methods A fluid sampling system retrieves a formation fluid sample from a formation surrounding a wellbore extending along a wellbore axis, wherein the formation has a virgin fluid and a contaminated fluid therein. The system includes a sample inlet, a first guard inlet pos... | 02/02/2010 |
| 7654130 | Gas chromatography system architecture incorporating integrated thermal management A self-contained micro-scale gas chromatography system that includes a plurality of gas chromatography components arranged on a micro-fluidic platform with nearly zero dead volume “tubeless” fluidic connections for the gas chromatography components. The micro-fl... | 02/02/2010 |
| 7644761 | Fracturing method for subterranean reservoirs A method of creating multiple fractures in a well traversing a formation is described using pressurized fluids in a highly deviated or horizontal section of the well at a pressure above the fracturing pressure of the formation, wherein for creating a fracture the pr... | 01/12/2010 |
| 7644611 | Downhole fluid analysis for production logging A downhole fluid analysis tool capable of fluid analysis during production logging that includes a phase separator and a plurality of sensors to perform analysis on the fluids collected at a subsurface location in a borehole. ... | 01/12/2010 |
| 7643374 | Slowness-frequency projection display and animation Techniques for displaying sonic logging data that provide highly reliable, visual quality-control (QC) indicators. One aspect herein is directed to a display of sonic logging data corresponding to a slowness frequency analysis (SFA) projection log. ... | 01/05/2010 |
| 7639566 | Geophone securement mechanism A seismic sensor comprising a coil assembly suspended in a magnet field produced by a magnet assembly, and a locking mechanism for preventing the coil assembly from moving freely until a seismic event is initiated at the surface or within an earth formation to colle... | 12/29/2009 |
| 7639563 | Method for sonic indication of voids in casing cement A method for determining on a real time logging while drilling (LWD) basis the top of cement location between casing transition zones in a borehole using at least one sonic attributes of coherent energy, attenuation and slowness as a function of at least one of dept... | 12/29/2009 |
| 7638957 | Single drive betatron A betatron includes a betatron magnet with a first guide magnet having a first pole face and a second guide magnet having a second pole face. Both the first and the second guide magnet have a centrally disposed aperture and the first pole face is separated from the ... | 12/29/2009 |
| 7637151 | Enhanced downhole fluid analysis The operation, analysis and interpretation of a chromatographic system can be significantly enhanced by coupling therewith one or more fluid property measurements that provides an initial indication of the fluid type, the presence of any contamination, an estimate o... | 12/29/2009 |
| 7630872 | Methods for visualizing distances between wellbore and formation boundaries A method for displaying a formation model includes displaying a trajectory representing a three-dimensional structure of the wellbore; and displaying objects representing a bed boundary along the trajectory, wherein the objects are displayed at distances from the tr... | 12/08/2009 |
| 7630517 | Computer-based generation and validation of training images for multipoint geostatistical analysis A computer-implemented method is provided that automatically characterizes and verifies stationarity of a training image for use in multipoint geostatistical analysis. The stationarity is preferably characterized by statistical measures of orientation stationarity, ... | 12/08/2009 |
| 7628203 | Tracer injector tool for well investigation A tool system for monitoring a flow of liquid within a borehole. The tool system comprises a plurality of tools disposed on a longitudinal axis of the tool system. The plurality of tools comprises at least a first injector tool for ejecting in the borehole a tracer ... | 12/08/2009 |
| 7624803 | Injection apparatus for injecting an activated fluid into a well-bore and related injection method An injection apparatus for injecting an activated fluid and an activated chemical fluid mixture into a well-bore is disclosed. Then, an injection method for injecting an activated fluid into a well-bore is also disclosed. A particular application to the oilfield ind... | 12/01/2009 |
| 7624794 | Non-conductive and non-magnetic flowline for electromagnetic measurements on reservoir fluids at high pressures An apparatus and method to perform measurements on fluid in a wellbore fluid sample tool in which at least a portion of the flowline of the sample tool is made of a non-magnetic and non-conductive material. ... | 12/01/2009 |
| 7623968 | Determination of porosity and fluid saturation of underground formations A method of determining the porosity and fluid saturation for a given volume of an underground formation through which a borehole is drilled, the method comprising: measuring, from within the borehole, parameters relating to characteristics of the underground format... | 11/24/2009 |
| 7622919 | Nuclear magnetic resonance measurement techniques in non-uniform fields Methods and pulse sequences for facilitating nuclear magnetic resonance (NMR) measurements in grossly inhomogeneous fields. Methods and pulse sequences according to the invention may be used to accurately measure variables such as transverse relaxation time, longitu... | 11/24/2009 |
| 7622916 | Detector A casing position locator for detecting structural features of a borehole casing, the locator including: a plurality of field generators for generating respective dynamic magnetic fields which combine to provide a dynamic test magnetic field to interact with the cas... | 11/24/2009 |
| 7622430 | Delayed-gelation solution The invention concerns an aqueous delayed-gelation solution for use in hydrocarbon wells. According to the invention, the aqueous delayed-gelation solution a dissolved metal salt which, in use, hydrolyses to form a gel, wherein the solution contains suspended inorga... | 11/24/2009 |
| 7619540 | Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion A logging tool includes a tool body; a simple transmitter comprising a single antenna disposed on the tool body; four simple receivers, each comprising a single antenna, disposed on the tool body and spaced apart from the simple transmitter to form four arrays; and ... | 11/17/2009 |
| 7617050 | Method for quantifying resistivity and hydrocarbon saturation in thin bed formations A method for estimating hydrocarbon volume in a layered subsurface formation includes determining a vertical resistivity and a horizontal resistivity in the formation. A bound water saturation and a total porosity of individual layers of the formation are determined... | 11/10/2009 |
| 7609380 | Real-time calibration for downhole spectrometer An apparatus for performing real-time analysis of a subterranean formation fluid includes a light source configured to transmit at least a sample signal through a sample of the subterranean formation fluid and a reference signal, at least one photodetector configure... | 10/27/2009 |
| 7607358 | Flow rate determination of a gas-liquid fluid mixture Methods and systems are described for determining a flow rate of a gas-liquid fluid mixture in a conduit. In the described systems and methods, the fluid mixture is conditioned so that the liquid in the mixture is separated from the gas in the mixture. Properties of... | 10/27/2009 |
| 7605715 | Electromagnetic wellbore telemetry system for tubular strings A coaxial transmission line for an electromagnetic wellbore telemetry system comprises an outer conductive pipe, an inner conductive pipe disposed coaxially inside an axial bore of the outer conductive pipe, a first electrical contact having a first contact face dis... | 10/20/2009 |
| 7603237 | Method for analyzing data having shared and distinct properties A method to determine formation properties using two or more data sets in which the solutions corresponding to the data sets represent shared and distinct formation properties. The method analyzes the data sets and computes distributions for the shared and distinct ... | 10/13/2009 |
| 7602668 | Downhole sensor networks using wireless communication Sensors located in the vicinity of a hydrocarbon-producing well receive power and communicate with one or more hubs located in the well or at the outer surface of a casing by means of elastodynamic waves. Each hub incorporates a plurality of transducers which permit... | 10/13/2009 |
