Fluid Flow Investigation Patents (Class 702/12)
  • Publication number: 20130173168
    Abstract: Apparatus and computer readable media for managing an intelligent field, are provided. An exemplary apparatus can include hydrocarbon well instruments, a SCADA system, a process integration server and/or dynamic field data analyzing computer, and memory/computer readable media storing a dynamic field data analyzing computer program. The computer program can include instructions that when executed cause the dynamic field data analyzing computer to perform various operations to include receiving real-time dynamic field data, analyzing validity of the dynamic field data, validating values of the field data, validating a state/condition of a well, and flagging well components, well conditions, and/or well state validation issues.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 4, 2013
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventor: Saudi Arabian Oil Company
  • Publication number: 20130173166
    Abstract: Downhole gravity measurements are used to monitor the volumetric sweep of CO2 and estimate the fingering phenomenon if any. The gravity measurements have been found to be effective due to the high density contrast between CO2 and brine or oil which provides better and higher sensitivity. An analytical forward model is used to determine the location and shape characteristics of the flooding front. A strategy to monitor the movement of the CO2 flooding front and to predict the fingering phenomenon is used to provide a warning tool to improve the sweep efficiency, according to some embodiments.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Inventors: MOHAMMED BADRI, PATRICE LIGNEUL, KHALED HADJ-SASSI
  • Publication number: 20130173167
    Abstract: Methods for managing an intelligent field, are provided. An exemplary method can include receiving real-time dynamic field data, analyzing validity of the dynamic field data, validating values of the field data, validating a state/condition of a well, and flagging well components, well conditions, and/or well state validation issues.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 4, 2013
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventor: Saudi Arabian Oil Company
  • Publication number: 20130166216
    Abstract: A method of determining rate and phase of fluid produced from or injected into a hydrocarbon well includes obtaining first temperature and pressure measurements from sensors at the well. The first temperature and pressure measurements are applied to a plurality of predictive well models to calculate an estimated value of fluid rate and phase composition from each of the predictive well models responsive to the temperature and pressure measurements. A first fluid rate and phase composition result is derived from the estimate value of fluid rate and phase composition from each of the predictive well models.
    Type: Application
    Filed: February 21, 2013
    Publication date: June 27, 2013
    Applicant: BP EXPLORATION OPERATING COMPANY LIMITED
    Inventor: BP Exploration Operation Company Limited
  • Patent number: 8473214
    Abstract: A method for determining permeability of a reservoir using a packer-probe formation testing tool. The elements of the method include generating, using a dual packer tool module, fluid flows from the reservoir into a wellbore, obtaining pressure data associated with the fluid flows using an observation probe tool module, wherein the packer-probe formation testing tool comprises the dual packer module and the observation probe tool module, identifying a portion of the pressure data corresponding to a spherical flow regime, determining horizontal permeability based on the portion of the pressure data, and displaying an output generated using the horizontal permeability.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: June 25, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Ihsan Murat Gok, Peter S. Hegeman, Mustafa Onur, Fikri John Kuchuk
  • Patent number: 8469090
    Abstract: A method is described for monitoring a fluid flow in a flow line from a location in a subterranean reservoir to a surface storage or production facility using the steps of employing sensors located in the wellbore, along the flow line and surface systems for monitoring flow conditions, establishing parameters which determine the hydrocarbon phases like liquids and gases, precipitation of solid components from the fluid flow as a result of changes in temperature, pressure and compositions, setting alert parameters relating to the precipitation parameters, and determining an operating profile representative of present conditions along the flow line, wherein the precipitation parameters, the alert parameters and the operating profile and extrapolation of the operating profile are represented in a single parameter space.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: June 25, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Marcus Rossi, Jean-Claude Vernus, Abul K. M. Jamaluddin
  • Patent number: 8465984
    Abstract: The instant disclosure is directed to a method of detecting an emulsion in a turbid brine, the method comprising the steps of disposing an aliquot of the turbid brine into a sample container to produce a test sample; adding one or more drops of a dye solution comprising an oil-soluble dye dissolved in a nonaqueous base fluid to said test sample; and determining the configuration of the dye solution after a period of time on a surface of the test sample, wherein a configuration of the dye solution forming a ring around the perimeter of the sample container at the interface of a wall of the sample container and the turbid brine indicates an emulsion is present in the turbid brine, and wherein a configuration of the dye solution forming a single dot or a plurality of dots on the surface of the turbid brine indicates an emulsion is not present in the turbid brine.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: June 18, 2013
    Assignee: M-I L.L.C
    Inventors: Bethicia B. Prasek, Marc A. Churan
  • Patent number: 8463550
    Abstract: A system for geosteering during directional drilling of a wellbore including a processor, a data storage, and client devices in communication with the processor through a network. The processor can receive data from directional drilling equipment and can present that data to users in an executive dashboard. Users can send data and/or commands to the directional drilling equipment. The executive dashboard can present: a portion of interest in a stratigraphic cross section for user identification of: the drill bit in the stratigraphic cross section, formations in the stratigraphic cross section, and other formation data. The system can be used to: identify a projected path for the drill bit, import data, compute wellbore profiles and stratigraphic cross sections, plot actual drilling paths, overlay the actual drilling path onto the projected path, and present control buttons to the user.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: June 11, 2013
    Assignee: Selman and Associates, Ltd.
    Inventors: Thomas H. Selman, Matthew J. Jennings
  • Patent number: 8463549
    Abstract: A method for geosteering during directional drilling of a wellbore including a processor, a data storage, and client devices in communication with the processor through a network. The processor can receive data from directional drilling equipment and can present that data to users in an executive dashboard. Users can send data and/or commands to the directional drilling equipment. The executive dashboard can present a portion of interest in a stratigraphic cross section for user identification of the drill bit in the stratigraphic cross section, formations in the stratigraphic cross section, and other formation data. The method can be used to identify a projected path for the drill bit, import data, compute wellbore profiles and stratigraphic cross sections, plot actual drilling paths, overlay the actual drilling path onto the projected path, and present control buttons to the user.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: June 11, 2013
    Assignee: Selman and Associates, Ltd.
    Inventors: Thomas H. Selman, Matthew J. Jennings
  • Publication number: 20130144533
    Abstract: Disclosed are an apparatus and a method of measuring porosity and permeability of a carbon dioxide underground storage medium. Both of the porosity and the permeability are measured in the state that the confining pressure is applied once. The variation characteristic in the porosity and the permeability of the core sample according to the salt precipitation occurring when supercritical carbon dioxide is injected is continuously measured. The apparatus includes a holder receiving a core sample, a pressure pump applying a confining pressure to the core sample, a gas chamber storing gas and supplying supply the stored gas to the core sample, first to third pressure gauges measuring an internal pressure of the gas chamber and front and rear portions of the holder, and a gas flow meter measuring a flow rate of gas.
    Type: Application
    Filed: October 22, 2012
    Publication date: June 6, 2013
    Applicant: Korea Institute of Geoscience and Mineral Resources
    Inventor: Korea Institute of Geoscience and Mineral Resour
  • Publication number: 20130138348
    Abstract: A method for the determination of an inflow profile and bottom-hole area parameters (perforation zone parameters, bottom-hole area pollution parameters) in a multipay well comprises changing a production rate and measuring a temperature of a fluid flowing into the well as a function of time for each pay zone. Then a derivative of this temperature with respect to a logarithm of a time passed after the well production rate has been changed for each pay zone is determined. An inflow profile and other parameters are calculated based on a value of said derivative when it becomes constant and on a time after which the value of the derivative becomes constant.
    Type: Application
    Filed: December 31, 2009
    Publication date: May 30, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Valiry Vasilievich Shako, Vyacheslav Pavlovich Pimenov
  • Publication number: 20130138349
    Abstract: A system for monitoring and display of representative parameters in a selected monitoring geography incorporates multiple sensor suites (10) deployed at selected measurement sites within a monitoring geography which provide output data. A computer (18) receives output from the sensor suites and incorporates a computational module (208) for processing of the sensor suite output data with respect to a selected model and integration and networking software (23) for selection of parameters in the computational module and display of selected visualizations of the processed data, Monitoring terminals (20) are deployed through a network (21) and connected to the computer under control of the integration and networking software. The terminals communicate with the computational module and receive and display results from the computational module.
    Type: Application
    Filed: May 9, 2011
    Publication date: May 30, 2013
    Applicant: GROUNDSWELL TECHNOLOGIES, INC.
    Inventor: Mark Kram
  • Publication number: 20130131989
    Abstract: Apparatus, computer readable media, method and program code for determining well characterstics and pore architecture for a hydrocarbon well utilizing data available from conventional/standard electronic well logs, are provided. An example apparatus is configured to perform operations which include determining the value of well constants from well log data to include calculating water saturation, free water level location, wettability, and pore throat heterogeneity, and calculating/pore architecture at log resolution responsive thereto. This can be accomplished, for example, by accessing well log data from a conventional well log, determining a linear regression line responsive to parameters calculated from the well log data, the linear regression line having a slope and an intercept, and determining a value of each of a plurality of well constants responsive to a value of the slope and of the intercept of the linear regression line.
    Type: Application
    Filed: December 17, 2012
    Publication date: May 23, 2013
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventor: Saudi Arabian Oil Company
  • Patent number: 8447535
    Abstract: A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. A first apparent property of the multi-phase process fluid based on the motion of the vibratable flowtube is determined, and an apparent intermediate value associated with the multi-phase process fluid based on the first apparent property is determined. A corrected intermediate value is determined based on a mapping between the intermediate value and the corrected intermediate value. A phase-specific property of a phase of the multi-phase process fluid is determined based on the corrected intermediate value.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: May 21, 2013
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Michael S. Tombs
  • Publication number: 20130110402
    Abstract: Apparatus for in-situ wellbore measurements, said apparatus comprising one or more sensors arranged outside a wellbore, one or more actuators associated with the sensors, an electromagnetic transceiver situated inside a non-magnetic portion of wellbore conduit and mounted on an electric-line logging cable, a downhole interface unit also located on the electric-line cable for controlling communication to the apparatus. Also a method of in-situ wellbore measurements using said apparatus.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 2, 2013
    Applicant: SENSOR DEVELOPMENTS AS
    Inventor: Oivind Godager
  • Patent number: 8433520
    Abstract: Job monitoring methods and apparatus for logging-while-drilling equipment are disclosed. A disclosed example method includes obtaining a fluid associated with an underground geological formation, analyzing the fluid with one or more sensors to form respective ones of sensor outputs, identifying a downhole scenario associated with the fluid based on the sensor outputs, the identifying being performed while the sensors are within the underground geological formation, and selecting a telemetry frame type based on the identified downhole scenario.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: April 30, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Sylvain Ramshaw, Julian J. Pop, Peter Swinburne, Kai Hsu, Steven G. Villareal
  • Publication number: 20130103319
    Abstract: Methods, computer readable medium, apparatus, and program code for determining well characteristics and pore architecture for a hydrocarbon well utilizing data available from conventional/standard electronic well logs, are provided. An example of a method can include determining the value of well constants from well log data to include calculating water saturation, free water level location, wettability, and pore throat heterogeneity, and calculating pore architecture at log resolution responsive thereto. This can be accomplished, for example, by accessing well log data from a conventional well log, determining a linear regression line responsive to parameters calculated from the well log data, the linear regression line having a slope and an intercept, and determining a value of each of a plurality of well constants responsive to a value of the slope and of the intercept of the linear regression line.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventor: SAUDI ARABIAN OIL COMPANY
  • Publication number: 20130096835
    Abstract: Clustering analysis is used to partition data into similarity groups based on mathematical relationships between the measured variables. These relationships (or prototypes) are derived from the specific correlation required between the measured variables (data) and an environmental property of interest. The data points are partitioned into the prototype-driven groups (i.e., clusters) based on error minimization. Once the data is grouped, quantitative predictions and sensitivity analysis of the property of interest can be derived based on the computed prototypes. Additionally, the process inherently minimizes prediction errors due to the rigorous error minimization during data clustering while avoiding overfitting via algorithm parameterization. The application used to demonstrate the power of the method is pressure gradient analysis.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 18, 2013
    Applicant: PRECISION ENERGY SERVICES, INC.
    Inventors: Hamed Chok, Jeffery J. Hemsing
  • Publication number: 20130090855
    Abstract: A method for evaluating inflow or outflow in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured during static conditions or while drilling and may be further processed to compute a density of an inflow constituent in the annulus. Changes in the computed interval density with time may be used as an indicator of either an inflow event or an outflow event.
    Type: Application
    Filed: August 14, 2012
    Publication date: April 11, 2013
    Inventors: John Rasmus, William Lesso, John James
  • Patent number: 8412458
    Abstract: Physical models of wells are used to determine rate and phase composition for fluid produced from or injected into the wells on a near real time and continuous basis. The method can be used to alert operators or others of conditions in a well or field to permit more immediate response. The method can be more tolerant of sensor faults, sensor drift, anomalous data or other occurrences which could otherwise lead to incorrect output. More than one model can be used to permit a hierarchy of calculation such that the rate and phase determination is more tolerant of anomalous data. The calculated rate and phase values from one or more wells can be reconciled against facility data.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: April 2, 2013
    Assignee: BP Exploration Operating Company Limited
    Inventors: John Foot, Richard Heddle, Michael James Webster
  • Publication number: 20130073210
    Abstract: A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an electroseismic response in at least one porous subsurface earth formation containing at least one fluid, and processing the one or more detected signals to determine at least one property of the subsurface earth formation.
    Type: Application
    Filed: November 13, 2012
    Publication date: March 21, 2013
    Inventors: Arthur Thompson, Alan Katz, Robert England, Mohammad Rahman, Naga P. Devineni
  • Patent number: 8400874
    Abstract: A method for characterizing fluid pumping effects on a subsurface formation includes (a) during pumping of fluid into the subsurface formation, detecting passive seismic signals related to fractures created in the subsurface formation. (b) A place of origin of the passive seismic signals is determined. (c) A seismic energy source is actuated for a plurality of actuations and an output thereof is beam steered toward the place of origin. (d) At least one acoustic property is determined for the place of origin using signals detected as a result of the plurality of actuations. The detected signals are beam steered toward the place of origin and are stacked over the plurality of actuations. (a), (b), (c) and (d) are repeated until the pumping is completed.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: March 19, 2013
    Assignee: Acoustic Zoom, Inc.
    Inventors: Jacques Y. Guigné, Nicholas G. Pace, Adam Gogacz
  • Patent number: 8392121
    Abstract: A system for monitoring fluids at a drilling location, the system including a viscometer (210) having a heating cup and a pump (211) in clued communication with the heating cup, wherein the pump is configured to provide a flow of fluid from a fluid line inlet to the heating cup. The system also including a cleaning fluid tank (214) including communication with the heating cup, wherein the pump is configured to provide a flow of cleaning fluid from the cleaning fluid tank to the heating cup, and a system controller (217) configured to provide instructions to the pump for controlling the flow of cleaning fluid from the cleaning fluid tanks to the heating cup.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: March 5, 2013
    Assignees: M-I L.L.C., Schlumberger Norge AS
    Inventors: Mario Zamora, Tore Stock
  • Publication number: 20130041588
    Abstract: A monitoring tool is provided for monitoring wells for flow anomalies. The temperatures of flowing well fluid and ambient temperature are monitored and various methods applied to indicate if a well is normal flowing, at risk of flow stoppage or cessation of flow. Approaches are described for determining trending indicators from actual flow temperatures compared to a normal flow relationship for establishing the presence of flow anomalies. Temperature sensors, onsite processors and communications upload data for display of well status flags on a mapping module enabling pro-active detection and preventative action by operators.
    Type: Application
    Filed: May 2, 2012
    Publication date: February 14, 2013
    Applicant: ADVANCED FLOW TECHNOLOGIES INC.
    Inventors: Len JOHNSON, Jonathan E. AIREY, Steve Conquergood
  • Patent number: 8365831
    Abstract: A method is disclosed for determining the connectivity architecture of a hydrocarbon reservoir in terms of locally optimal paths between selected source points, e.g. wells. In one embodiment of the invention, a fast-marching method (133) is used to compute the distance field (or the time of arrival field) from N selected source points in a heterogeneous media, i.e. in a non-uniform velocity field. This is done by propagating N labeled (132) fronts simultaneously from N objects. Then, a method (134) is disclosed for detecting Voronoi curves or Voronoi surfaces, where fronts of differing labels meet each other. Then, saddle points are found on the Voronoi curves or surfaces (135), and each saddle point is used to determine a locally optimal path (136) between a pair of equidistant (from the saddle point), closest (to the saddle point) source points.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: February 5, 2013
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Chul-Sung Kim, Mark W. Dobin
  • Patent number: 8355873
    Abstract: Reservoir characterization based on observations of displacements at the earth's surface. One method of characterizing a reservoir includes the steps of: detecting a response of the reservoir to a stimulus, the stimulus causing a pressure change in the reservoir; and determining a characteristic of the reservoir from the response to the stimulus. The response may be the pressure change which varies periodically over time, or a set of displacements of a surface of the earth. In another example, a method includes the steps of: detecting a set of displacements of the earth's surface corresponding to a pressure change in the reservoir; and determining a characteristic of the reservoir from the surface displacements. In yet another example, a method includes the steps of: detecting a set of displacements of the earth's surface corresponding to a change in volume of the reservoir; and determining a characteristic of the reservoir from the surface displacements.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: January 15, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ali Mese, Syed Hamid, Dingding Chen, Harry D. Smith, Jr., John Howard, Neal Skinner
  • Patent number: 8352226
    Abstract: Methods, systems, and computer readable media are provided for real-time oil and gas field production optimization using a proxy simulator. A base model of a reservoir, well, pipeline network, or processing system is established in one or more physical simulators. A decision management system is used to define control parameters, such as valve settings, for matching with observed data. A proxy model is used to fit the control parameters to outputs of the physical simulators, determine sensitivities of the control parameters, and compute correlations between the control parameters and output data from the simulators. Control parameters for which the sensitivities are below a threshold are eliminated. The decision management system validates control parameters which are output from the proxy model in the simulators. The proxy model may be used for predicting future control settings for the control parameters.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: January 8, 2013
    Assignee: Landmark Graphics Corporation
    Inventors: Alvin Stanley Cullick, William Douglas Johnson
  • Patent number: 8344896
    Abstract: The invention concerns a process for detecting scale deposit in the liquid supply means of a water pump driven machine comprising at least a water tank, a pump and a heating means, where water is pumped from the water tank and fed to the heating means, and where the pump is energized by a controller by providing the pump with an energizing signal to provide an intended water flow rate F, wherein the actual water flow rate f is measured and the discrepancy ? between the actual water flow rate f and the intended water flow rate F is directly and/or indirectly compared to an operating instruction related to scale deposit.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: January 1, 2013
    Assignee: Nestec S.A.
    Inventor: Matthieu Ozanne
  • Patent number: 8340913
    Abstract: Methods and related systems are described for analyzing phase properties in a microfluidic device. A fluid is introduced under pressure into microchannel, and phase states of the fluid are optically detected at a number of locations along the microchannel. Gas and liquid phases of the fluid are distinguished based on a plurality of digital images of the fluid in the microchannel. Bi-level images can be generated based on the digital images, and the fraction of liquid or gas in the fluid can be estimated versus pressure based on the bi-level images. Properties such as bubble point values and/or a phase volume distribution ratio versus pressure for the fluid are can be estimated based on the detected phase states of the fluid.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: December 25, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Farshid Mostowfi, Younes Belahnech
  • Patent number: 8335650
    Abstract: Example methods and apparatus to determine phase-change pressures are disclosed. A disclosed example method includes capturing a fluid in a chamber, pressurizing the fluid at a plurality of pressures, measuring a plurality of transmittances of a signal through the fluid at respective ones of the plurality of pressures, computing a first magnitude of a first subset of the plurality of transmittances, computing a second magnitude of a second subset of the plurality of transmittances, comparing the first and second magnitudes to determine a phase-change pressure for the fluid.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: December 18, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Kai Hsu, Kentaro Indo, Peter S. Hegeman, Carsten Sonne
  • Publication number: 20120316788
    Abstract: An example method comprises collecting formation temperature data along a wellbore extending into a subterranean formation, determining test operating parameter values, performing a wellbore hydraulic simulation of the response of wellbore fluid conditions to the test operating parameter values and the formation temperature data, determining whether the response of wellbore fluid conditions is indicative of one of a well control and a well stability problem, and initiating a test based on the determination whether the response of wellbore fluid conditions is indicative of one of a well control and a well stability problem.
    Type: Application
    Filed: October 5, 2010
    Publication date: December 13, 2012
    Inventors: Sylvain Bedouet, Julian Pop
  • Patent number: 8326541
    Abstract: A method for estimating fluid volumes moved in compartmented areas of the subsoil, the method including the steps of a) performing a series of gradiometric measurement campaigns at pre-established time intervals in a survey field, in which the relative variation ?Vi of the fluid volumes contained in a corresponding compartmented area of the subsoil is known; b) determining, for each measurement campaign after the first campaign, a parameter P1i based on the entire survey area; and c) determining a variability law that correlates the parameter P1i to the known relative variation ?Vi in fluid volumes in the compartmented area of the subsoil.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: December 4, 2012
    Assignee: ENI S.p.A.
    Inventors: Massimo Antonelli, Salvatore Giammetti, Italiano Giori, Luca Savini, Luigi Terzi
  • Publication number: 20120303281
    Abstract: A computer implemented method for determining reservoir pressure in a shut-in well, the method comprising: determining the initial physical characteristics of the well; determining properties of gas bubble throughout the well; calculating a dynamic mass transfer rate for the gas bubble over a period of time; calculating the physical fluid movement along the well: calculating a rate of fluid influx from the reservoir; determining a corrected pressure gradient along at least part, or all, of the profile of the well using the determined dynamic mass transfer rate, fluid movement and rate of fluid influx; and determining the reservoir pressure from a measure, or determination, of the well head pressure and the calculated pressure.
    Type: Application
    Filed: November 15, 2010
    Publication date: November 29, 2012
    Applicant: Petroliam Nasional Berhad
    Inventors: Vai Yee Hon, Suzalina Bt Zainal
  • Publication number: 20120303280
    Abstract: A method for estimating a borehole independent porosity of a subterranean formation includes processing a neutron logging data point, preferably including average near and far detector neutron count rates with suitable input data to obtain the porosity estimate. The borehole independent formation porosity may be obtained without any compensation and without any reliance on the measurement or estimation of sensor standoff and/or borehole caliper.
    Type: Application
    Filed: May 23, 2011
    Publication date: November 29, 2012
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Libai Xu, Cornelis Huiszoon
  • Patent number: 8321133
    Abstract: A technique for utilizing tube waves to measure sound speed of fluids and other properties in the frequency range of about 5 to 100 kHz. A drill string is equipped with a sensor tube having a cavity filled with a downhole fluid such as borehole mud or formation fluid. An acoustic transmitter and an array of acoustic receivers are mounted on the tube in direct contact with the fluid. Processing circuitry calculates a property, e.g., sound speed, of the fluid based on time-of-flight of an acoustic signal generated by the transmitter and received by the array of receivers. Alternatively change in signal phase as a function of frequency may be employed by the processing circuitry. The technique is particularly suited to measuring the sound speed of borehole mud in situ.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: November 27, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Chaur-Jian Hsu, Ralph M. D'Angelo
  • Patent number: 8321190
    Abstract: A method of simulating fluid transport in a system for stimulating a well in a material formation of a resource reservoir, the system comprising a conduit element arranged in the well, the conduit element comprising a conduit wall including one or more openings for discharging a fluid into the material formation surrounding the conduit element; the method comprising establishing and numerically processing a transport model of fluid transport inside the conduit element. The transport model further includes a model of fluid transport in a predetermined space around the conduit element.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: November 27, 2012
    Assignee: Maersk Olie & Gas A/S
    Inventors: Jens Henrik Hansen, Kristian Mogensen
  • Patent number: 8321131
    Abstract: An apparatus and a method for determining characteristics of earth formations traversed by a borehole that compensates the mudcake and standoff effects with fewer than usual detectors. The apparatus includes an radiation source effective to generate first and, spatially as well as temporally separate, second X-rays for irradiating earth formations from first and second entrance angles, one or more X-ray detectors capable of generating a first and a second signal indicative of the intensity of the first and second X-rays returned from earth formations to the detectors and a housing accommodating the radiation source and the detectors.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: November 27, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Charles R. Case
  • Publication number: 20120277997
    Abstract: The invention relates to a device for examining a tubular channel, the device comprising a three-way valve, buoyancy means, pressure means, a vent line, at least one sensor and computation means; wherein the three-way valve controls the fluid flow between the pressure means and the buoyancy means and between the buoyancy means and the vent line; the computation means is communicatively coupled to the at least one sensor and adapted to generate a control signal based on data received from the at least one sensor; and wherein the pressure means is fluidly coupled to the buoyancy means via the three-way valve such that a fluid may flow from the pressure means to the buoyancy means or from the buoyancy means to the surroundings of the device via the vent line; and wherein the computation means is communicatively coupled to the three-way valve and controls said three-way valve via the control signal. Thereby, the invention is able to examine e.g.
    Type: Application
    Filed: September 14, 2010
    Publication date: November 1, 2012
    Applicant: Maersk Oil Qatar A/S
    Inventors: Wilhelmus Hubertus Paulus Maria Heijnen, Robert Bouke Peters
  • Patent number: 8301381
    Abstract: A method for determining the water saturation of an underground formation traversed by a borehole, the method composing: determining a first parameter (?) that is representative of the critical exponent of the electrical conductivity of the formation: determining a second parameter (Wc or Sc or ?c) that is representative of the formation percolation threshold; measuring a first set of formation properties; and combining, said first set of formation properties, first and second parameters in order to determine the water saturation (Sw) of said underground formation.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: October 30, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Bernard Montaron
  • Publication number: 20120267169
    Abstract: A method, apparatus and computer-readable medium for drilling a wellbore is disclosed. A fluid is pumped to rotate a drilling assembly at an end of a drill string in the wellbore. A plurality of measurements of pressure of the fluid is obtained. A standard deviation of the mud pressure is estimated from the plurality of fluid pressure measurements, and a variation of a tool face angle of the drilling assembly to the pumped fluid is estimated from a comparison of the estimated standard deviation of pressure to a selected criterion. A drilling parameter can be altered to drill the wellbore based on the estimated variation of the tool face angle.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 25, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Thorsten Schwefe
  • Publication number: 20120241149
    Abstract: A method of comparing a secondary oil recovery process with a tertiary oil recovery process, the secondary oil recovery process and the tertiary oil recovery process being applied to a substantially fluid-saturated porous medium containing an oil phase and an aqueous phase, the method comprising using relaxation time measurements in the calculation of a wettability index modification factor for the oil phase or the aqueous phase, thereby comparing the tertiary oil recovery process with the secondary oil recovery process.
    Type: Application
    Filed: November 19, 2010
    Publication date: September 27, 2012
    Inventors: Quan Chen, Ian Ralph Collins
  • Patent number: 8275549
    Abstract: The online measurement system of radioactive tracers in oil wells head, object of this invention, is characterized by the use of new technology to measure concentrations of tracer activity in real time, using a radiation detector NaI (TI), with features that make it possible to detect up to three different tracers and be able to operate in temperature conditions up to 150° C., which allows to be immersed in a container with fluid coming from the flow stream, achieving with this to increase the sensitivity of the measurements. This system of measurement in the head of production wells will allow having much more data of the tracer activity, avoiding having to transport the operational staff to production wells to carry out sampling test, with all the advantages that this represents.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: September 25, 2012
    Assignee: Instituto Mexicano del Petroleo
    Inventors: Jetzabeth Ramírez Sabag, Luis Rubén Amado Hidalgo, Saúl Diaz Jiménez, Marco Antonio Hernández Rojo
  • Patent number: 8269501
    Abstract: Methods for imaging geological structures include injecting magnetic materials into the geological structures, placing at least one magnetic probe in a proximity to the geological structures, generating a magnetic field in the geological structures and detecting a magnetic signal. The at least one magnetic probe may be on the surface of the geological structures or reside within the geological structures. The methods also include injecting magnetic materials into the geological structures, placing at least one magnetic detector in the geological structures and measuring a resonant frequency in the at least one magnetic detector. Methods for using magnetic materials in dipole-dipole, dipole-loop and loop-loop transmitter-receiver configurations for geological structure electromagnetic imaging techniques are also disclosed.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: September 18, 2012
    Assignee: William Marsh Rice University
    Inventors: Howard K. Schmidt, James M. Tour
  • Patent number: 8265809
    Abstract: The present invention relates to an autonomous underwater vehicle (“AUV”) for monitoring underwater fluid currents by detecting electrical currents induced by the flow of a conductive liquid through the Earth's magnetic field. More particularly, the present invention relates to the gathering of data related to underwater fluid currents and the control of AUV motion during data gathering.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: September 11, 2012
    Assignee: Teledyne Instruments, Inc.
    Inventor: Douglas C. Webb
  • Publication number: 20120215452
    Abstract: A method of producing hydrocarbons in a reservoir includes determining a relationship between an injection well and a producing well based on an injection rate and a production rate wherein the relationship is filtered to produce a filtered value, and a modified state variable model is selected for each relationship to produce a positive relationship value to determine the production rate.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 23, 2012
    Applicant: University of Southern California
    Inventors: Daoyuan Zhai, Jerry M. Mendel
  • Publication number: 20120209529
    Abstract: Physical models of wells are used to determine rate and phase composition for fluid produced from or injected into the wells on a near real time and continuous basis. The method can be used to alert operators or others of conditions in a well or field to permit more immediate response. The method can be more tolerant of sensor faults, sensor drift, anomalous data or other occurrences which could otherwise lead to incorrect output. More than one model can be used to permit a hierarchy of calculation such that the rate and phase determination is more tolerant of anomalous data. The calculated rate and phase values from one or more wells can be reconciled against facility data.
    Type: Application
    Filed: April 23, 2012
    Publication date: August 16, 2012
    Applicant: BP EXPLORATION OPERATING COMPANY LIMITED
    Inventors: John Foot, Richard Heddle, Michael J. Webster
  • Patent number: 8244509
    Abstract: The invention relates to a method of performing an oilfield operation of an oilfield having at least one wellsite, each wellsite having a wellbore penetrating a subterranean formation for extracting fluid from an underground reservoir therein. The method steps include obtaining a plurality of real-time parameters from a plurality of sensors disposed about the oilfield, wherein the plurality of real-time parameters comprise at least one selected from a group consisting of real-time flow rate data and real-time pressure data of the wellbore, configuring a gridless analytical simulator for simulating the underground reservoir based on the plurality of real-time parameters, generating real-time simulation results of the underground reservoir and the at least one wellsite in real-time using the gridless analytical simulator, and performing the oilfield operation based on the real-time simulation results.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: August 14, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Raj Banerjee, Michael Thambynayagam, Jeffrey Spath, Bobby Poe, Lumay Viloria, Greg Grove
  • Publication number: 20120203463
    Abstract: Methods for determining fluid rheology, the methods including determining a first discharged volume or weight of a fluid at a first time, determining at least a second discharged volume or weight of the fluid at a second time, and calculating fluid rheology based on the determined first and at least second discharged fluid volumes or weights at the first and second times.
    Type: Application
    Filed: October 7, 2010
    Publication date: August 9, 2012
    Inventors: Quanxin Guo, Cong Wang, Thomas Geehan, Lujun Ji
  • Patent number: 8239134
    Abstract: A system and method for detecting abnormal operation of a hydrocracker includes a hydrocracker model. The model may be configurable to include one or more regression models corresponding to different operating regions of the portion of the hydrocracker. The system and method may also determine if a monitored temperature difference variable deviates significantly from the temperature difference variable predicted by the model. If there is a significant deviation, this may indicate an abnormal operation.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: August 7, 2012
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Ravi Kant, John Philip Miller, Tautho Hai Nguyen
  • Patent number: 8230917
    Abstract: Methods and systems are described for stimulating a subterranean hydrocarbon-bearing reservoir, one method comprising contacting the formation with a treating fluid, and monitoring the movement of the treating fluid in the reservoir by providing one or more sensors for measurement of temperature and/or pressure which is disposed on a support adapted to maintain a given spacing between the sensors and the fluid exit. In some embodiments the support is coiled tubing.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: July 31, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Jeanne Boles, Vibhas Pandey, Murtaza Ziauddin