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Data Processing: Measuring, Calibrating, Or Testing > Measurement System In A Specific Environment > Earth Science > Well Logging Or Borehole Study Well Logging Or Borehole StudyWell Logging Or Borehole Study patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/30/06 - 20060271299 - Wellbore evaluation system and method A wellbore evaluation system evaluates mechanical wear and corrosion to components of a well system including a production tubing string positionable in a well and a sucker rod string movable within the production tubing string. A deviation sensor determines a deviation profile of the production tubing string in the well, ... 10/19/06 - 20060235618 - Pump off measurements for quality control and wellbore stability prediction A method for obtaining high-quality well logging data acquired during a drilling operation includes acquiring well logging data during a pump-off period when a mud pump is turned off; and extracting a subset of data from the acquired well logging data, wherein the subset of data corresponds to a quiet ... 10/19/06 - 20060235617 - System and method for detection of near-wellbore alteration using acoustic data A method for monitoring a formation property includes determining at least two slowness values from at least two datasets each characterizing an acoustic wave having a different frequency traversing a formation; and deriving an indicator based on the at least two slowness values. A system for monitoring a formation property ... 09/21/06 - 20060212223 - Method for designing formation tester for well A method for designing a closed-chamber drillstem test system. Parameters of available equipment and a well to be tested are collected. Initial or proposed chamber size and chamber pressurizing fluids are then selected. A simulation of a test is then performed. The simulation is performed in time increments, with pressure ... 07/20/06 - 20060161350 - Multicomponent induction measurements in cross-bedded and weak anisotropy approximation Multicomponent measurements made in a cross-bedded earth formation are processed to give one or more equivalent TI models. Resistivity information about the cross-bedding is obtained from one of the TI models and a measured cross-bedding angle. Resistivity information about the cross-bedding may also be obtained using a combination of two ... 07/13/06 - 20060155471 - Induction resistivity imaging principles and devices in oil based mud An induction logging tool having transmitter and receiver antennas is used to make measurements of earth formations. The antennas may be mounted on the mandrel of a bottomhole assembly for MWD applications, or may be pad mounted for wireline applications. The induction measurements are inverted using a linearized model. The ... 07/06/06 - 20060149477 - Measurement-while-drilling assembly using real-time toolface oriented measurements This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes directional formation evaluation devices on a rotating assembly in conjunction with toolface orientation sensors. The data from the toolface orientation sensors are analyzed by a processor and toolface angle measurements are determined at defined intervals. ... 07/06/06 - 20060149476 - Inferred production rates of a rod pumped well from surface and pump card information A method for inferring production of a rod pumped well. Inferred production is estimated in a well manager which not only performs pump-off control with a down-hole pump card, but also estimates liquid (oil-water) and gas production using the subsurface pump as a meter. Methods are incorporated in the well ... 06/08/06 - 20060122777 - Waterflood control system for maximizing total oil recovery A control system and method for determining optimal fluid injection pressure is based upon a model of a growing hydrofracture due to waterflood injection pressure. This model is used to develop a control system optimizing the injection pressure by using a prescribed injection goal coupled with the historical times, pressures, ... 06/01/06 - 20060116823 - Method and system for cause-effect time lapse analysis A method of evaluating changes for a wellbore interval involves acquiring a first log data from a logging sensor during a first pass over the wellbore interval, acquiring a second log data from the logging sensor during a second pass over the wellbore interval, calculating a plurality of delta values ... 05/18/06 - 20060106541 - Enhancing the quality and resolution of an image generated from single or multiple sources The present invention provides a method and apparatus for logging an earth formation and acquiring subsurface information wherein a logging tool is conveyed in a borehole to obtain parameters of interest. The parameters of interest obtained may be density, acoustic, magnetic or electrical values as known in the art. As ... 04/20/06 - 20060085134 - Downhole recorder system A downhole recorder system for use with a downhole assembly to be lowered into a borehole comprises at least one recorder uniquely associated to a determined sub-assembly of the downhole assembly. The at least one recorder allows to store operating data related to the determined sub-assembly. The stored operating data ... 04/06/06 - 20060074561 - 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 trajectory according to measurement data, wherein the objects are displayed in orientations reflecting ... 03/30/06 - 20060069510 - Method and system for measuring depth to saturated soils A method is provided for determining the depth to the saturated soil at a selected site. A first and second instance wherein the depth of the water table equals the depth to the saturated soil is identified (142). The rate of change of the depth to the saturated soil is ... 03/09/06 - 20060052937 - Method, systems, and computer readable media for optimizing the correlation of well log data using dynamic programming A method, systems, and computer readable media optimize the correlation of well log data utilizing dynamic programming. A geological signature in well log data from a reference well is mapped onto well log data from one or more target wells by using a dynamic programming algorithm to calculate multiple solutions. ... 03/09/06 - 20060052936 - Tubing expansion In one embodiment, there is disclosed a method of expanding downhole tubing such as a liner (10), the method comprising the steps of locating the liner (10) in a borehole (12), expanding a part (16) of the liner (10) in the borehole (12), locating an expansion device such as an ... 03/02/06 - 20060047430 - Method and apparatus for improving wireline depth measurements Wireline depths are estimated using cable depth measurements and accelerometer depth measurements made over a time interval encompassing the time for which the wireline depth is being estimated. A least squares smoothing filter or a weighted least squares smoothing filter may be used. Problems caused by washouts in the borehole ... 03/02/06 - 20060047429 - Method of estimating geological formation depths by converting interpreted seismic horizons from the time domain to the depth domain According to one aspect of the invention, a method of estimating geological location depths by converting horizon data from the time domain to the depth domain is provided, wherein the method comprises at least a data accumulation step and a data evaluation step, wherein the data evaluation step further comprises ... 02/23/06 - 20060041382 - Method for interpreting data measured in a hydrocarbon well in production The invention concerns a method for calculating the relative volumetric flow-rates of at least one of the phases of a multiphase effluent flowing in a well, said method comprising a first step of acquiring local volumetric fractions and/or velocities of said phases across a section of the well at a ... 02/09/06 - 20060031017 - Method and apparatus for improved depth matching of borehole images or core images A method for depth matching borehole images and/or core section images is disclosed wherein signals from sensors at different levels on a logging tool are converted into an averaged signal representing the average bed signal at the center of the borehole at each of the different levels. A depth matching ... 01/19/06 - 20060015257 - Incremental depth measurement for real-time calculation of dip and azimuth The present invention provides a method and apparatus for logging an earth formation and acquiring subsurface information wherein a logging tool is conveyed in borehole to obtain parameters of interest. The parameters of interest obtained may be density, acoustic, magnetic or electrical values as known in the art. The parameters ... 01/19/06 - 20060015256 - Apparent dip angle calculation and image compression based on region of interest The present invention provides a method and apparatus for logging an earth formation and acquiring subsurface information wherein a logging tool is conveyed in borehole to obtain parameters of interest. The parameters of interest obtained may be density, acoustic, magnetic or electrical values as known in the art. The parameters ... 12/22/05 - 20050283315 - Estimation of borehole geometry parameters and lateral tool displacements A method for determining a borehole geometry parameter vector and/or lateral tool displacement vectors in a borehole is provided. The method includes acquiring at least one set of standoff measurements at a corresponding time. The method also includes processing a system of equations to determine the parameter vector and/or the ... 12/01/05 - 20050267686 - Wellbore evaluation system and method A wellbore evaluation system evaluates mechanical wear and corrosion to components of a well system including a production tubing string positionable in a well and a sucker rod string movable within the production tubing string. A deviation sensor determines a deviation profile of the well, a rod sensor senses and ... 11/24/05 - 20050261835 - 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 inhomogeneous formation, and stacking the processed waveforms. The stacking may occur in the frequency or ... 11/17/05 - 20050256643 - Method for estimating pore structure of porous materials and its application to determining physical properties of the materials A method is disclosed for modeling a pore structure of a porous material. The method includes generating an initial model of the porous material. The initial model includes an interconnected network of passages including a first geometric shape and a second geometric shape. At least one petrophysical property is calculated ... 11/17/05 - 20050256642 - [method of correcting triaxial induction arrays for borehole effect] A method for modeling borehole effects of a transverse array induction tool includes selecting a formation-borehole model having a set of parameters, wherein the set of parameters comprises a direction of tool eccentering; determining initial values for the set of parameters; computing expected responses for a selected set of arrays ... 11/10/05 - 20050251342 - Method and apparatus for multi-mode signal processing A method is disclosed that may include separating modes in a plurality of coherent time-domain signals to form a plurality of separated modes, generating frequency coherence information for each of the plurality of separated modes, and combining the frequency coherence information for each of the plurality of separated modes to ... 11/03/05 - 20050246104 - Method for management of multiple wells in a reservoir A method of managing multiple wells connected to a reservoir comprises the steps of: setting production and performance goals for each individual well; monitoring the performance of each individual well; enabling each individual well to assess its own situational state; and enabling socially interactive corrective actions, comprising enabling collaboration and ... 10/27/05 - 20050240351 - Method for determining a stuck point for pipe, and free point logging tool A method and apparatus for determining the location of stuck pipe are provided. In one embodiment, the method includes the step of attaching a free point logging tool to a working line such as a slickline or wireline. The free point logging tool has a freepoint sensor and, optionally, an ... 10/27/05 - 20050240350 - Method for computation of differential azimuth from spaced-apart gravity component measurements A method is provided for computing the differential azimuth between two sets of spaced-apart gravity component measurement devices in a borehole, employing multiple rotation angles. ... 10/27/05 - 20050240349 - Multimodal decomposition A method and apparatus are useful for decomposing a complex distribution of data by modeling the complex distribution as a sum of discrete simple distributions, and processing the simple distributions independently. The independent processing enables the complex distribution to be reconstructed without the simple distributions that are concluded to be ... 10/20/05 - 20050234648 - Method for stress and stability related measurements in boreholes A method for the measurement of the stresses and pressure perturbations surrounding a well, and a system for computing the optimum location for initiating a hydraulic stress fracture. The technique includes using sensors attached to the wellbore casing connected to a data analyzer. The analyzer is capable of analyzing the ... 10/20/05 - 20050234647 - Enhanced measurement of azimuthal dependence of subterranean parameters A method for estimating an azimuthal dependence of a parameter of a borehole using logging sensor measurements acquired as a function of azimuth of the logging sensors is provided. The method includes acquiring at least one logging sensor measurement and a corresponding azimuth from a downhole tool. The method further ... 10/13/05 - 20050228590 - Method for correlating well logs The invention relates to a method of correlating two or more overlapping well logs generated by a well logging device which, in use, is positioned in a well and is mounted to an elongate member extending along the well to the surface, movement of the elongate member at the surface ... 10/06/05 - 20050222773 - Method of imaging in an underground formations steep-sloping geologic interfaces, giving rise to prismatic reflections Method of imaging in an underground formation one or more steep-sloping geologic interfaces, not necessarily plane, forming with primary reflectors, not necessarily plane, dihedra giving rise to prismatic seismic reflections (double reflections). The geometry of the steep-sloping interface is determined from a pick on seismic records of one or more ... 10/06/05 - 20050222772 - Oil rig choke control systems and methods A choke diagnostic system with a positioner for moving a choke mechanism of a choke, a choke isolation valve for placing the choke in standby mode, and a processor controlling the choke and, in certain aspects, the processor for commanding the positioner to move the choke mechanism while the choke ... 09/29/05 - 20050216197 - Three-dimensional wellbore visualization system for drilling and completion data A visualization system for a wellbore environment includes a graphics processor for creating a wire mesh model of a well and optionally a drillstring based on datasets of depth-varying parameters of the well. A graphics system maps appropriate textures to the wire mesh models, which are then displayed on a ... 09/29/05 - 20050216196 - Contamination estimation using fluid analysis models Methods and systems are described for estimating of the level of contamination of downhole fluid using physical property measurements, and mathematical modeling of contamination functions and fluid property mixing laws. The proposed approaches enable computation of estimates of the pumping time needed to achieve a certain contamination threshold level. ... 09/22/05 - 20050209782 - Rotary downlink system A method for downlink communication with a downhole tool having a mud-powered downhole motor that includes receiving a sensor signal related to a rotational speed of a rotor in the mud-powered downhole motor, and interpreting the sensor signal to derive a downlink signal. ... 08/04/05 - 20050171697 - [system and method for analyzing a thin bed formation] A system and method is disclosed for determining a physical characteristic or property associated with each of a plurality of layers of laminated formation traversed by a wellbore, wherein the laminated formation includes thin beds. The method includes providing one or more high resolution logs of a formation property for ... 07/21/05 - 20050159895 - Adjustment for frequency dispersion effects in electromagnetic logging data Method and apparatus are provided for adjusting electromagnetic well logging data for effects of frequency dispersion. In exemplary embodiments, a model is provided for estimating an electrical property of an earth formation as a function of frequency. The model is derived, for each particular volume of interest, based on measured ... 07/14/05 - 20050154532 - System and method for determining the inclination of a wellbore A well survey system comprising an electronic survey tool for determining the inclination of a wellbore is disclosed herein with methods of use. In some embodiments, the electronic survey tool includes an electrolytic tilt sensor adapted to measure a first tilt angle within a first plane and a second tilt ... 07/07/05 - 20050149265 - Method and apparatus for correcting the depth index for well-log data using pressure measurements A wireline well-logging data acquisition system and method for establishing corrected depth based on pressure readings from two pressure sensors separated by a known distance. ... 07/07/05 - 20050149264 - System and method to interpret distributed temperature sensor data and to determine a flow rate in a well A distributed temperature sensor is deployed in a wellbore and is functionally connected to a processor. The processor receives the data from the distributed temperature sensor and automatically processes the data to highlight valuable information to the user relating to the relevant well, completion, or reservoir. In one embodiment, the ... ### FreshPatents.com Support |