Quotables
"One of the greatest labor saving inventions of today is tomorrow!"
Vincent T. Floss
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7884316 | Scintillator device A scintillator device is provided that includes a scintillator device having a scintillator crystal and a shock absorbing member surrounding the scintillator crystal. The scintillator device has a detected light output, ((LO100)/(LO0))×100%, o... | 02/08/2011 |
| 7800052 | Method and system for stabilizing gain of a photomultipler used with a radiation detector A method for controlling voltage applied to a photomultiplier used in a scintillation counter radiation detector includes determining numbers of voltage pulses having each of a plurality of predetermined amplitudes generated by the photomultiplier in response to rad... | 09/21/2010 |
| 7649169 | Method for determining shale bed boundaries and gamma ray activity with gamma ray instrument Resolution of thin beds made by a natural gamma ray logging tool is improved using a relation between the width of the response and the bed thickness. The peak gamma ray of the bed is determined using another relation between the measured gamma ray response and the ... | 01/19/2010 |
| 7482578 | Gamma radiation spectral logging system and method for processing gamma radiation spectra A gamma ray logging system and a method of calibrating a detected gamma radiation spectrum. The gamma ray logging system includes a gamma ray detector for detecting gamma radiation, an analyzer for generating a detected gamma radiation spectrum from the detected gam... | 01/27/2009 |
| 7408645 | Method and apparatus for a downhole spectrometer based on tunable optical filters Thermally tunable optical sensors are used in sampling tools for analysis of samples from a wellbore. The thermally tunable optical sensors generate a series passbands of wavelength emissions and detect attenuation in a signal thereof. The attenuation detected is pr... | 08/05/2008 |
| 7362422 | Method and apparatus for a downhole spectrometer based on electronically tunable optical filters The present invention provides an apparatus and method for high resolution spectroscopy (approximately 10 picometer wavelength resolution) using a tunable optical filter (TOF) for analyzing a formation fluid sample downhole and at the surface to determine formation ... | 04/22/2008 |
| 7347267 | Method and apparatus for cooling flasked instrument assemblies Method and apparatus are provided to accelerate the cooling of thermally sensitive components in a chamber of a downhole instrument assembly. In accordance with the invention, a passage is formed in the chamber and a fluid is conveyed through the passage to cool the... | 03/25/2008 |
| 7337660 | Method and system for reservoir characterization in connection with drilling operations A method for analyzing reservoir fluids in connection with a drilling operation includes determining composition and isotopes of injection fluids injected into a wellbore during a drilling operation and production fluids recovered from the wellbore during the drilli... | 03/04/2008 |
| 7328106 | Method of correcting density logs for the presence of the casing A gas detection method includes carrying out respective neutron and density logs, using neutron and density detectors, along a length of well. The density log is corrected for the dimensions and properties of the well casing. The corrected density log is then combin... | 02/05/2008 |
| 7294840 | Apparatus and method for reducing microphonic susceptibility in a radiation detector The invention provides a system for removing or minimizing microphonic noise from a radiation detector signal, such as from a neutron detector, without creating excessive false counts in the electronics that count the radiation events. The system solves the micropho... | 11/13/2007 |
| 7287592 | Limited entry multiple fracture and frac-pack placement in liner completions using liner fracturing tool The present invention is directed to a method and apparatus for fracturing a subterranean formation which use a liner fracturing tool. The liner fracturing tool consists of a liner, with at least one jet extending through the liner. During fracturing operations, fra... | 10/30/2007 |
| 7274013 | Automatic gain adjust utility for radiation spectrometers In a preferred embodiment, an automatic gain adjust method for radiation spectrometers, including: placing a calibration source emitting known energies at a radiation detector; acquiring a spectrum of the known energies; automatically analyzing the spectrum and comp... | 09/25/2007 |
| 7253402 | Apparatus and method for determining thermal neutron capture cross section of a subsurface formation from a borehole using multiple detectors A well logging instrument including a plurality of detectors having different precisions and accuracies, the more precise detectors generally having lower accuracies. The detectors are responsive to the interaction of radiation from a suitable source on the instrume... | 08/07/2007 |
| 7252628 | Device for treating human skin by means of radiation The invention relates to a device (1) for treating human skin by means of radiation. The device has a housing (5) with a radiation exit opening (13), a radiation source (9) which is accommodated in the housing, and a radiation path (15... | 08/07/2007 |
| 7253401 | Spectral gamma ray logging-while-drilling system A method for determining concentrations of naturally occurring radioactive elements in earth formation by analysis of gamma ray energy spectra measured by at least one gamma ray detector while the borehole is being drilled. Gain of the gamma ray detector is controll... | 08/07/2007 |
| 7202456 | Gain stabilization apparatus and methods for spectral gamma ray measurement systems Apparatus and methods for measuring gamma ray energy spectra wherein the gain of the measurement system is continuously and automatically adjusted to a standard gain. Gain of the system is controlled automatically through analysis of the measured energy spectra. Alt... | 04/10/2007 |
| 7159660 | Hydrajet perforation and fracturing tool Methods and apparatus for fracturing a subterranean formation which use a fracturing tool. The fracturing tool includes a hydrajet tool, with at least one fluid jet and at least one fracturing port extending through the liner. The fracturing tool further includes a ... | 01/09/2007 |
| 7129501 | Radiation detector system having heat pipe based cooling A radiation detector system having a heat pipe based cooling. The radiation detector system includes a radiation detector thermally coupled to a thermo electric cooler (TEC). The TEC cools down the radiation detector, whereby heat is generated by the TEC. A heat rem... | 10/31/2006 |
| 7129477 | Method of processing data from a dual detector LWD density logging instrument coupled with an acoustic standoff measurement A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An acoustic caliper is used for making standoff measurements of the NaI ... | 10/31/2006 |
| 7081626 | Apparatus and method for temperature correction and expanded count rate of inorganic scintillation detectors The present invention includes an apparatus and corresponding method for temperature correction and count rate expansion of inorganic scintillation detectors. A temperature sensor is attached to an inorganic scintillation detector. The inorganic scintillation detect... | 07/25/2006 |
| 7081616 | Downhole gamma-ray detection A method for evaluating a natural gamma-ray activity within a borehole, comprises the steps of: stabilizing the gain according to a method for stabilizing a gain of a gamma-ray detector for use in a downhole logging tool; ... | 07/25/2006 |
| 7066023 | Distributed sensor array for fluid contaminant monitoring A disclosed fluid purity monitoring system employs a network of preferably information-transmissive cables fixed in place within a body of fluid. Sensors sensitive to fluid impurities are supported at various places on the network. Data representative of impurity le... | 06/27/2006 |
| 7059405 | Methods of treating subterranean formations using low-molecular-weight fluids The present invention relates to systems and methods useful in subterranean treatment operations. Examples of methods of the present invention include methods for fracturing a portion of a subterranean formation penetrated by a well bore; methods of enhancing produc... | 06/13/2006 |
| 7006682 | Apparatus for monitoring particles and method of doing the same There is provided an apparatus for monitoring a size of a particle, including (a) a laser beam source which radiates a laser beam to an area in which particles exist, (b) a photodetector which receives the laser beam having been scattered by the particles, and outpu... | 02/28/2006 |
| 6975355 | Multiple sampling via a time-indexed method to achieve wide dynamic ranges An architecture for a digital pixel sensor is disclosed in which the dynamic range of the sensor is increased by taking samples of a subject to be recorded, where each sample is taken over an interval of a different duration than the other samples. In the preferred ... | 12/13/2005 |
| 6925830 | Well-water-type liquid cooling and heating resource system A well-water-type liquid cooling and heating resource system of the present invention, comprises a well, an energy lift device, a discharging pump and a suction pump sequentially connected by conduits. The well is separated into an upper portion and a lower portion ... | 08/09/2005 |
| 6909969 | Method of through-casing gas detection A gas detection method includes carrying out respective neutron and density logs, using neutron and density detectors, along a length of well. The density log is corrected for the dimensions and properties of the well casing. The corrected density log is then combin... | 06/21/2005 |
| 6686589 | Fluid density monitor A method of monitoring the density of a subterranean fluid comprises the steps of: using a subterranean radiation detector to obtain measurements over a plurality of time intervals of the amount of natural background radiation traversing said fluid, and c... | 02/03/2004 |
| 6531285 | Automated detection apparatus with a conveying means for test columns An apparatus and method for detecting the presence of at least two predetermined known materials in a test sample are disclosed. The apparatus includes a sample addition station for adding a sample to a test column in the apparatus, a reagent station, a w... | 03/11/2003 |
| 6476384 | Methods and apparatus for downhole fluids analysis A method of determining GOR comprising subjecting a fluid to spectroscopic analysis at a first wavelength sensitive to gas and a second wavelength sensitive to oil, determining a response matrix for the contribution of gas at the first and second waveleng... | 11/05/2002 |
| 6373050 | Focal plane infrared readout circuit with automatic background suppression A circuit for reading out a signal from an infrared detector includes a current-mode background-signal subtracting circuit having a current memory which can be enabled to sample and store a dark level signal from the infrared detector during a calibration... | 04/16/2002 |
| 6087656 | Radiation detector system and method with stabilized system gain A closed-loop stabilization system and method for a radiation detector system including a scintillator and a light sensing device for detecting the scintillation light produced in the scintillator through interaction with impinging radiation. A spectrally... | 07/11/2000 |
| 6051830 | Method for stabilizing a scintillation detector A method for calibrating a logging tool that is exposed to an external energy spectrum, comprising the steps of: (a) providing a stabilization source that emits a stabilization signal having a known energy; (b) providing a receiver that receives a total s... | 04/18/2000 |
| 5744803 | Radiation detector assembly and method with discrimination between vibration and radiation induced events A well logging instrument and method that remove vibration induced noise from the output of a detector including a scintillation crystal. The invention is based on a realization that pulses induced by vibration during MWD operations are characteristically... | 04/28/1998 |
| 5675147 | System and method of petrophysical formation evaluation in heterogeneous formations A system and method for evaluating a geological formation is described which compares actual wireline log measurements from a number of wireline logging tools to predicted tool response logs. The system and method uses a forward model of each tool respons... | 10/07/1997 |
| 5600135 | Spectral gain stabilization using gross shape features of largely invariant spectra A method for providing gain stabilization to a nuclear spectroscopy tool by use of gross features of largely invariant spectra. A particle or gamma ray energy spectrum of an earth formation and wellbore are measured. A ratio of the number of particles or ... | 02/04/1997 |
| 5486695 | Standoff compensation for nuclear logging while drilling systems A standoff compensation system is disclosed for use in an LWD system implementing gamma density and/or neutron porosity measurements. An acoustic transducer is provided to measure the standoff distance between the logging tool and the borehole wall. The p... | 01/23/1996 |
| 5461230 | Method and apparatus for temperature compensation of gamma tools in MWD environments A method and apparatus for providing temperature compensation in gamma radiation detectors used in measurement-while-drilling applications in oil and gas exploration. During the initial calibration of a gamma radiation detector, a source of radiation in t... | 10/24/1995 |
| 5422480 | Method and apparatus for the verification of helium-3 proportional counters A method and apparatus for verifying operation and achieving gain stabilization in a helium-3 proportional counter radiation detector utilized in nuclear logging operations. The detector includes a beta-minus particle source selected to provide a predeter... | 06/06/1995 |
| 5406078 | Induced gamma ray spectorscopy well logging system A system for measuring fast neutron induced gamma ray energy spectra in cased wellbores. The system includes an electronic source of monoenergetic 14 MeV fast neutrons, a high density bismuth germanate scintillation detector, a downhole pulse height analy... | 04/11/1995 |
