Fluid Flow Investigation Patents (Class 702/12)
  • Patent number: 10385659
    Abstract: An analytical solution is obtained for a pseudo-steady state production from a vertically fractured well with finite or infinite fracture conductivity. The analytical solution may be used to compute a pseudo-steady state constant for the reservoir. Subsequently, performance parameters relating to the reservoir may be derived from the pseudo-steady state constant. For example, parameters such as production decline rate, total hydrocarbon reserves, and economically recoverable reserves for the reservoir may be computed. The disclosed analytical solution, instead of a conventional numerical simulation, can significantly speed up analysis and improve the accuracy of the calculation of these parameters.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 20, 2019
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventor: Kangping Chen
  • Patent number: 10379257
    Abstract: Distributing petrofacies using analytical modeling. At least some of the illustrative embodiments are methods including: creating, by a computer system, a geocellular model of an underground formation, the creating by: reading a first value of a first rock property associated with a first well log; associating the first value of the first rock property with a first cell of a plurality of cell of the geocellular model; assigning a value of the first rock property to each cell of the plurality of cells based on the first value and a datum of information, the datum of information distinct from the first value.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: August 13, 2019
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventor: Jeffrey M. Yarus
  • Patent number: 10347022
    Abstract: A method for graphically representing a subterranean space from the perspective of a point within the subterranean space, in some embodiments, comprises: obtaining data associated with the subterranean space, said data corresponding to a plurality of coordinates in a first coordinate system; associating the data for each of said plurality of coordinates with one or more corresponding coordinates in a second coordinate system; generating a different model of the subterranean space based on the data and said associations; and displaying the different model on a display, wherein the different model represents the subterranean space from the perspective of a point within the subterranean space.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 9, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Dale E. Jamison, Robert L. Williams, Amir Bar, Jeffrey Marc Yarus
  • Patent number: 10303819
    Abstract: Techniques for allocating hydrocarbon production include receiving a selection of a particular area identification (ID) of a plurality of area IDs stored on the server; determining based on the selected particular area ID, a plurality of hydrocarbon production values that include periodic area-level hydrocarbon production values associated with the particular area ID and a plurality of wells associated with the particular area ID; determining a decline curve model for the area-level hydrocarbon production values associated with the particular area ID; modeling the aggregated periodic well-level hydrocarbon production values with the determined decline curve model; and determining allocated well-level hydrocarbon production values based at least in part on the selected decline curve model to display at a client device.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: May 28, 2019
    Assignee: Drilling Info, Inc.
    Inventor: William M. Bashore
  • Patent number: 10288544
    Abstract: Method for exploiting a fluid within an underground formation comprising a layer traversed by a fracture network and a well. From property measurements relative to the layer, the fracture network is characterized by statistical parameters and a discrete fracture network model is constructed. For each well, three simplification zones surrounding the well are defined. From the statistical parameters, an equivalent permeability tensor and a parameter characterizing the orientation and the vertical continuity of the fractures are determined for each zone. For each zone, a simplification of the discrete fracture network model is determined as a function of the zone, the equivalent permeability tensor and the value of the parameter. An optimum exploitation scheme is defined for the formation fluid from the simplified fracture network model and a flow simulator.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 14, 2019
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Andre Fourno, Bernard Bourbiaux
  • Patent number: 10221659
    Abstract: Automated systems and methods provide a systematic determination of suitable placements for well production zones that comply with specified placement constraints while accounting for information in the geocellular model. One computer-based well placement method embodiment includes: creating a three-dimensional geocellular model of a subsurface region including a reservoir; determining a map-view layout of well candidate zones that satisfies a set of layout parameters; deriving a three-dimensional arrangement of well production zones by testing each well candidate zone's potential vertical positions against a set of arrangement parameters; and storing the three-dimensional arrangement of well production zones on a non-transient information storage medium for use in evaluating production from the reservoir.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: March 5, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Artem Mikhaylovich Baranov, Kathleen L. Baker
  • Patent number: 10215002
    Abstract: Some examples of determining wellbore leak crossflow rate between formations in an injection well are described. During normal operation of an injection well, multiple bottomhole pressures are determined based on multiple surface injection pressures. An Inflow Performance Relationship (IPR) for the injection well is determined based on the multiple bottomhole pressures and the multiple injection flow rates. After shut-in responsive to a subsurface leak, the shut-in injection well is modeled as a producing well having the IPR determined during normal operation of the injection well. A crossflow rate in the injection well at a location of the subsurface leak in the injection well is determined based on the IPR of the modeled producing well.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: February 26, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: Nasser M. Al-Hajri
  • Patent number: 10202826
    Abstract: Systems and methods are directed to oil and gas management. In example implementations, data relating to oil and gas management is aggregated and placed in a cube along several cube dimensions, which can include scalar, temporal and spatial dimensions. The dimensions can be structured as a hierarchy, such that output can be generated as a roll up or roll down along the hierarchy.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 12, 2019
    Assignee: HITACHI, LTD.
    Inventors: Ravigopal Vennelakanti, Anshuman Sahu, Umeshwar Dayal
  • Patent number: 10201671
    Abstract: An apparatus for producing gas for use in medical applications. The apparatus includes a compressed gas unit having at least one container of compressed gas and a solenoid valve. An adjustable pressure regulator communicably connected to the gas container, separate and distinct from the solenoid valve, is adjusted to control the pressure of the gas provided from the container to the solenoid valve. An electrical power source is connected to the solenoid valve. A pressure activated electronic switch connected to the power source is responsive to a selected amount of voluntary fingertip, pressure for opening the solenoid valve to transmit the gas therethrough to a conduit, which further transmits the gas to a destination for use or storage.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: February 12, 2019
    Inventor: Frank Levy
  • Patent number: 10180516
    Abstract: The present invention relates to a method of modelling channel ways. In particular, this method comprises steps for determining a set of stochastic channelway trajectories as a function of a local directional component and of a trigonometric component and for providing the determined trajectory of the channel way which complies with a certain number of constraints. A point of one of the trajectories belongs to an entry constraint. Finally, the set of trajectory constraints is complied with by the determined set of trajectories.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: January 15, 2019
    Assignee: TOTAL SA
    Inventor: Gérard Massonnat
  • Patent number: 10107096
    Abstract: Formation testing which may involve circulating mud in a pipe string from a mud pit through a port in the pipe string to a downhole diverter sub, wherein the pipe string is suspended in a wellbore extending into a subterranean formation, operating a downhole pump to pump formation fluid from the formation, wherein the formation fluid comprises gas, and mixing the pumped formation fluid with circulated mud such that a proportion of the pumped formation gas in the circulated mud is maintained below a threshold value.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: October 23, 2018
    Assignees: SCHLUMBERGER TECHNOLOGY CORPORATION, STATOIL ASA
    Inventors: Sylvain Bedouet, Kare Otto Eriksen
  • Patent number: 10082602
    Abstract: Systems and methods for correlating gas condensates and wet gases in unconventional shale plays based on an equation of state using a condensate gas-ratio, a separator pressure and a separator temperature.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: September 25, 2018
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventors: Shameem Siddiqui, Amit Kumar, Ronald G Dusterhoff
  • Patent number: 10067255
    Abstract: Seismic data from seismic exploration surveys are mapped into a hypercube of bins or voxels in a four-dimensional space (X, Y, Offset, and Azimuth) according to Common Mid-Point (or CMP) between source and receivers. The mapped data from individual voxels or bins is then analyzed by multimodal statistics. Robust estimates of first break picks are obtained from the analysis. The first break picks are then used to as seed inputs for autopicking iteration, which proceeds to convergence. Estimates of confidence levels in the data are provided for re-picking to reduce computer processing time in successive autopicking iterations. Analysis is provided of different seismic attributes such as azimuthal velocity variations indicative of anisotropy, positioning errors of sources/receivers, geometry errors, and three dimensional distribution of inversion residuals. Analysis is also performed of standard deviation of the travel time data useful for estimating data errors in the inversion covariance matrix.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: September 4, 2018
    Assignee: Saudi Arabian Oil Company
    Inventors: Daniele Colombo, Federico Miorelli, Diego Rovetta, Gary Wayne McNeice
  • Patent number: 10054712
    Abstract: Machine, computer readable medium, program code, and computer-implemented methods for performing a reservoir simulation with well completion and reservoir grid data quality assurance, are provided. An exemplary embodiment can include a data quality analyzing machine having memory containing data quality analyzing instructions configured to simulate a reservoir model with automated well completion and reservoir grid data quality assurance.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: August 21, 2018
    Assignee: Saudi Arabian Oil Company
    Inventors: Mohammed S. Al-Nuaim, Umar A. Al-Nahdi, Tareq Al-Zahrani, Khalid Al-Alwan, Muath Al-Mulla
  • Patent number: 10036219
    Abstract: Disclosed are systems and methods for predicting a stabilized pressure in a wellbore of a well after an undesired influx of formation fluids, i.e., a kick, into the wellbore in a real-time drilling operation. Following the kick, the well is shut in. Signals representing pressure data associated with the subterranean casing, drill pipe, wellhead, and/or the bottomhole assembly and associated time data are received in a processor. A regression analysis is performed using the pressure data and associated time data in the processor and solved for a predicted stabilized pressure associated with the subterranean casing, the drill pipe, the wellhead, and/or the bottomhole assembly respectively. The regression analysis is performed around a variant of the radial diffusivity equation describing the rate-pressure relationship for flow of a production fluid. The predicted stabilized pressure is communicated to a user.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: July 31, 2018
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Charles G. Sinn, Raymond E. Johnston, John Greve, Steven J. Shipula, Joseph D. Cavataio, Vincent Gerard Patin, David Lynn Rodrick
  • Patent number: 10026133
    Abstract: Analyzing wells of mature field. At least some of the illustrative embodiments are methods including: gathering data about a group of wells; determining a condition of each well; creating an initial prioritization; creating a secondary prioritization based on at least one criteria provided by the client and the initial prioritization; analyzing at least some of the wells selected based on priority of each well in the secondary prioritization; interfacing with a service providing entity; providing to the client a first recommendation regarding corrective action, the first recommendation without regard to the service providing entity's availability to perform services; providing to the client a second recommendation regarding corrective action, the second recommendation taking into account the service providing entity's availability of crews and equipment; and performing at least one corrective action on at least one well, the performing based from the first or second recommendations.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: July 17, 2018
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventors: Robert M. Hull, Sung Hyun Kim, Darrin S. Seulakhan, Michael L. Boothe
  • Patent number: 10012049
    Abstract: A blowout preventer (BOP) safety system for testing the integrity of safety valves at the sea floor is disclosed. The system includes a BOP stack including a BOP, the BOP comprising a BOP shear ram and a first hydraulic circuit, the first hydraulic circuit in fluid communication with the BOP shear ram and having an open side and a close side. The system further includes a manifold, wherein the manifold is disposed proximate to and in fluid communication with a dump valve, a first sensor, and a supply valve and a first safety valve disposed between and in fluid communication with the manifold and the BOP on the close side, wherein the dump valve is operable to allow flow from the BOP to the manifold through the safety valve, and wherein the first sensor is operable to detect the flow from the BOP to the manifold.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 3, 2018
    Assignee: Hydril USA Distribution LLC
    Inventor: John Steven Holmes
  • Patent number: 9958571
    Abstract: Machine, computer readable medium, program code, and computer-implemented methods for performing a reservoir simulation with well completion and reservoir grid data quality assurance, are provided. An exemplary embodiment can include a data quality analyzing machine having memory containing data quality analyzing instructions configured to simulate a reservoir model with automated well completion and reservoir grid data quality assurance.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: May 1, 2018
    Assignee: Saudi Arabian Oil Company
    Inventors: Mohammed S. Al-Nuaim, Umar A. Al-Nahdi, Khalid A. Al-Nasser, Keyang Dai, Tareq Al-Zahrani, Khalid Al-Alwan, Muath Al-Mulla
  • Patent number: 9938829
    Abstract: A method for measuring load performance of a positive displacement motor (PDM) test coupon. The test coupon includes a partial length of a PDM stage and is received inside a sealable test chamber. In some embodiments, the test coupon may be cut from a failed PDM stage. The test chamber is filled with test fluid. In some embodiments, the test fluid may be drilling fluid sampled from a live well. Rotation of the rotor on the test coupon actuates rotation of the stator. A braking torque is applied to the stator rotation, enabling evaluation of, for example, fatigue load performance of test coupon. Additional embodiments comprise the rotor axis and the stator axis being offset in order to simulate rotor/stator eccentricity in a full size PDM stage.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 10, 2018
    Assignee: Basintek, LLC
    Inventors: Peter Thomas Cariveau, Timothy Mark Miller, Jing Lu
  • Patent number: 9896930
    Abstract: Well production rate, injection rate and pressure data are measured in an existing reservoir using in situ real time measurement gauges. Production and injection rates are entered as input to a history match model in a data processing system. Measures of projected reservoir pressure with time are generated by running the updated history match model using a reservoir simulator. Actual reservoir data values obtained at a given date or time slice from reservoir production are compared with projected data obtained from the reservoir simulator for that same date or time slice. At each time slice, the real-time pressure values measured at the wellbore are converted into reservoir pressures through a well model. The real time reservoir pressure values and the projected reservoir pressure are then used to interpolate the reservoir pressure array over the entire three dimensions using a geostatistical modeling process.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: February 20, 2018
    Assignee: Saudi Arabian Oil Company
    Inventors: Omar A. Al-Nahdi, Sami A. Alnuaim, Alan L. Siu, Ahmad Tariq Al-Shammari
  • Patent number: 9897714
    Abstract: A method and computer-readable medium for establishing an uncertainty for obtained values of a one-dimensional logging parameter mapped to a three-dimensional volume is disclosed. A relation is formed between the obtained values of the logging parameter and a volumetric parameter of the three-dimensional volume. A set of representative data points is obtained that relates the obtained values of the logging parameter to the volumetric parameter by binning the obtained values. A plurality of regression curves are then determined, wherein each regression curve is obtained by adding a random error to the set of representative data points to obtain a set of randomized data points and performing a regression analysis using the set of randomized data points. The plurality of regression curves are used to establish the uncertainty for the values of the logging parameter in the three-dimensional volume.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: February 20, 2018
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Marc Holland, Wouter E. Van Der Zee
  • Patent number: 9881108
    Abstract: A method of modeling the spatial variation in wind resource at a prospective wind farm site. The method involves a simplified analysis of the Navier-Stokes equation and utilizes data from all of the met sites simultaneously to develop site-calibrated models. The model coefficients, mUW and mDW, describe the sensitivity of the wind speed to changes in the upwind and downwind terrain exposure and are defined for downhill and uphill flow. The coefficients are a function of terrain complexity and, since terrain complexity can change across an area, the estimates are performed in a stepwise fashion where a path of nodes with a gradual change in complexity is found between each pair of sites. Also, coefficients are defined for each wind direction sector and estimates are performed on a sectorwise basis. The site-calibrated models are created by cross-predicting between each pair of met sites and, through a self-learning technique, the model coefficients that yield the minimum met cross-prediction error are found.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: January 30, 2018
    Assignee: One Energy Enterprises LLC
    Inventor: Elizabeth Walls
  • Patent number: 9879530
    Abstract: Selecting hydrocarbon wells for well testing. The selecting may include identifying hydrocarbon wells whose last well test took place prior to a predetermined date; identifying hydrocarbon wells with a parameter that exceeds a predetermined threshold; and selecting a predetermined number of hydrocarbon wells from the wells identified.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 30, 2018
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventors: Carlos M. LopezGarcia, Alvin S. Cullick, Giuseppe Moricca, Gustavo A. Carvajal, Jose A. Rodriguez
  • Patent number: 9850717
    Abstract: Embodiments disclosed herein relate to a method for analyzing a fixed cutter drill bit, said method including selecting a cutter; selecting an earth formation; simulating drilling performance of the fixed cutter bit having at least once cutter thereon; performing finite element analysis using outputs from the simulating; and outputting stress on the at least one cutter.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: December 26, 2017
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Zhehua Zhang, Jiaqing Yu
  • Patent number: 9778394
    Abstract: The present disclosure relates to a visual interface for identifying layers within a subterranean formation. One example method includes identifying one or more sets of data associated with a subterranean formation; computing, by operation of one or more processors, a working line based on the one or more sets of data, the working line representing a numerical average of the one or more sets of data; presenting the working line and the one or more sets of data in a common plot in a visual interface; identifying one or more layer boundaries for one or more of the layers of the subterranean formation; and generating layer data based on the one or more identified layer boundaries and the working line.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: October 3, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Anthony Joseph Vanek
  • Patent number: 9696269
    Abstract: An apparatus and method for NMR analysis of a plurality of core samples includes a core holder (11) that holds a core sample under pressurized conditions. A radio frequency coil (51) disposed about the core holder (11) generates a pulsed-mode magnetic field component over a sample volume occupied by the core sample. A support structure is removably secured to the respective core holder. A permanent magnet (65A, 65B) has an open configuration such that it is removably disposed into a position within the support structure about the radio frequency coil and the core holder. The open configuration allows the same permanent magnet to be used for NMR analysis of a plurality of core samples without the need for depressurizing the respective core holder and disassembling the core holder and corresponding load frame for each core sample. It also allows multiple core samples to be prepared for NMR analysis while separated from the NMR measurement apparatus.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: July 4, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Edmund J. Fordham, Jonathan Mitchell
  • Patent number: 9631489
    Abstract: A method of measuring parameters of a formation along multiple axes is disclosed. A formation tester tool is introduced into a wellbore. The formation tester tool includes a first probe oriented at an angle from a second probe about an axis of the formation tester tool. The first and second probes are positioned against a surface of the wellbore. Fluid is injected via at least one of the first and second probes. Pressure parameters corresponding to the fluid injected into the formation are monitored. Formation stresses about the formation fractures along multiple axes are determined based, at least in part, on the pressure parameters.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: April 25, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Cyrus A. Irani, Daniel Robert Buller, Ronald Johannes Dirksen, Sami Abbas Eyuboglu
  • Patent number: 9557312
    Abstract: Methods and apparatus for operating a downhole tool within a wellbore adjacent a subterranean formation to pump contaminated fluid from the formation into the downhole tool while measuring first and second fluid properties of the contaminated fluid. The contaminated fluid comprises native fluid from the formation and a contaminant. The downhole tool is in communication with surface equipment located at surface. The downhole tool and/or surface equipment is operated to estimate a formation volume factor of the contaminated fluid based on at least one of the first and second fluid properties of the contaminated fluid. A linear relationship is then estimated between the first fluid property and a function that relates the first fluid property to the second fluid property and the estimated formation volume factor of the contaminated fluid. A fluid property of the contaminant is then estimated based on the estimated linear relationship.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: January 31, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Youxiang Zuo, Adriaan Gisolf, Li Chen
  • Patent number: 9556729
    Abstract: In an example diagnostic fracture injection test (DFIT), or a “minifrac,” a fracturing fluid is pumped at a relatively constant rate and high pressure to achieve a fracture pressure of a subterranean formation. Sometime after achieving formation fracture pressure, the pump is shut off and the well is shut in, such that the pressure within the sealed portion of the well equilibrates with the pressure of the subterranean formation. As the pressure declines, the pressure of the injection fluid is monitored. This collected pressure data is then used to determine information regarding the permeability of the subterranean formation. In some implementations, a model for before closure analysis (BCA) can be used to estimate the permeability of a formation based on before closure pressure data (i.e., data collected before the fracture closure pressure is reached) based on a solution to the rigorous flow equation of fracturing fluid, which is leaking off into the formation during fracture closure.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: January 31, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Christopher Hoss Lamei, Mohamed Yousef Soliman
  • Patent number: 9476295
    Abstract: A method for determining when a plunger reaches the bottom of an oil or gas well equipped with a plunger lift system. More particularly, the method identifies a surface pressure associated with the plunger reaching the bottom.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: October 25, 2016
    Assignee: ConocoPhillips Company
    Inventor: Patrick W. Bergman
  • Patent number: 9372943
    Abstract: A method for modeling a dynamic system (e.g., geological system) comprises: constructing an input parameter space for a model of the geological system, the input parameter space including more than three dimensions, and the model associated with response data, representing the input parameter space visually with three or fewer dimensions, reducing the input parameter space by conditioning the parameter space using at least a subset of the response data, and updating the representation of the input parameter space to visually represent the reduction of the parameter space.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: June 21, 2016
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Dachang Li, Tao Sun, Xiao-Hui Wu, Timothy A. Chartrand, Stephen L. Lyons
  • Patent number: 9291541
    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: Grant
    Filed: October 22, 2012
    Date of Patent: March 22, 2016
    Assignee: Korea Institute of Geoscience and Mineral Resources
    Inventors: Kue-Young Kim, Jun-Ho Oh, Tae-Hee Kim
  • Patent number: 9279314
    Abstract: A numerical procedure is disclosed to improve the prediction of heat fronts when simulating hot fluid injection in viscous hydrocarbon reservoirs. The mathematical model is composed of the conventional governing equations that describe multiphase fluid flow and energy balance. The reservoir geometry can be partitioned into a regular Cartesian grid or an irregular corner-point geometry grid. The numerical procedure uses the finite different (FD) method to solve the flow equations and the discontinuous Galerkin (DG) method to solve the energy balance equation. The proposed FD-DG method is an alternative to the traditional solution procedure that uses the FD method to solve both the flow and the energy equations. The traditional method has the deficiency that it may require excessive number of grid cells to achieve acceptable resolution of the heat fronts.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: March 8, 2016
    Assignee: ConocoPhillips Company
    Inventor: Hussein Ali Hoteit
  • Patent number: 9262561
    Abstract: A computer-implemented reservoir prediction system, method, and software are provided for modeling the behavior of non-Newtonian fluids in subterranean reservoirs while accounting for shear-rate dependent viscosity and permeability reduction with a skin zone characterized by a traditional skin factor and an apparent skin factor. A non-Newtonian fluid injection pressure or a non-Newtonian fluid injection rate is computed at steady-state responsive to reservoir data associated with a subterranean reservoir, injection data for a non-Newtonian fluid, and fluid data for the non-Newtonian fluid. The shear-rate dependent viscosity can further be applied to a well model in numerical reservoir simulation to improve the well model.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 16, 2016
    Assignee: CHEVRON U.S.A. INC.
    Inventor: Pipat Likanapaisal
  • Patent number: 9188699
    Abstract: Systems and methods for basin to reservoir modeling to identify any hi-grade drilling targets based on the linking of static and dynamic reservoir rock and fluid properties. Static, present-day, reservoir and field scale description grids or unstructured meshes are transformed into dynamic (through time) simulation grids or unstructured meshes that can subsequently be used for input to dynamic calculators. Basin modeling may be performed at the reservoir scale, providing a link between present-day and the historical process that acted on the rocks and fluids.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: November 17, 2015
    Assignee: Landmark Graphics Corporation
    Inventors: Daniel James Carruthers, Jeffrey Marc Yarus
  • Patent number: 9182509
    Abstract: A surface seismic survey is generated or obtained from Earth's surface and is based on time in which acoustic waves are reflected to Earth's surface. One or more tools measure density and sonic velocity of a subsurface formation. An estimate of acoustic impedance is obtained from the density and the sonic velocity to generate a synthetic seismic survey. The synthetic seismic survey and the surface seismic survey are compared and/or correlated. The acoustic impedance can be iteratively estimated until the synthetic seismic survey matches the surface seismic survey. Matching the surface seismic survey with the synthetic seismic survey may ensure that the surface seismic survey may be calibrated in actual depth.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: November 10, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Reza Taherian, Jacques R. Tabanou, Eric Tabanou, Emmanuel Legendre
  • Patent number: 9163499
    Abstract: A new approach is disclosed for measuring the pressure of tight gas reservoirs, using information obtain from continuous injection prior to hydraulic fracture stimulation. The technique can be obtained utilizing either bottom-hole or surface pressure gauges and properly instrumented surface injection pumps. The analysis is completed by plotting injection and rate data in a specialized form from terms arranged in Darcy's radial flow equation to obtain a curve or trend. The key component to proper application of this technique is to obtain both baseline and one or more calibration data sets. These calibration data sets are obtained by either increasing or decreasing the injection pressure and/or rate from the baseline data. Initial reservoir pressure is assumed, but the calibration data indicates if the guess was too high or low. Accurate estimates of reservoir pressure may be obtained in a few iterations.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: October 20, 2015
    Assignee: BP Corporation North America Inc.
    Inventors: John R. Adams, Siyavash Motealleh, Herbert M. Sebastian, Yuanlin Jiang, Bryan Dotson
  • Patent number: 9146200
    Abstract: A system and method for determining an orientation of a reservoir feature from an unoriented core. The method includes selecting an arbitrary inclined plane in a longitudinal or transverse cross sectional CT scan image of the unoriented core; flattening the inclined plane by realigning all voxels within a volume of the unoriented core so as to obtain a horizontal plane in a realigned core; selecting a transverse cross sectional CT scan image of the realigned core where a desired feature is present; determining a correcting angle to be added to an angle of a flat-bed contact plane of the realigned core relative to a reference mark in the realigned core to obtain a correct inclination angle relative to compass map coordinates; determining a first angle between a direction perpendicular to the feature relative to the reference mark; and determining a second angle by adding the correcting angle to the first angle.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: September 29, 2015
    Assignee: CHEVRON U.S.A. INC.
    Inventor: Larry Zarra
  • Patent number: 9112871
    Abstract: An approach is provided for shared mobile web services. A community including multiple mobile web servers providing a shared web service is designated. In the event one mobile web server is unavailable to service a request directed to the shared web service, another mobile web server is selected to provide the shared web service.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: August 18, 2015
    Assignee: Core Wireless Licensing S.a.r.l
    Inventors: Mihály László Börzsei, Seamus Moloney
  • Patent number: 9074459
    Abstract: A method for simulating downhole conditions is described. The method includes receiving configuration information about a well system in a production configuration, the well system including annular fluids disposed therein and receiving heat source information associated with a heat source disposed within the well system. The method also includes simulating temperature transfer in the well system during a production scenario based at least on the configuration information and the heat source information and predicting pressure buildup in the annular fluids based on the simulated temperature transfer in the well system.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: July 7, 2015
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventors: Robert Mitchell, Adolfo C. Gonzales, Yongfeng Kang
  • Publication number: 20150142321
    Abstract: A method to detect flow rate from a displacement unit entailing locating the displacement unit in a fluid path, monitoring a piston position in the displacement unit for a stroke direction change, starting a timer upon a stroke direction change, monitoring at least one check valve position for an alteration of position, stopping the timer upon the alteration of position, calculating a time between the stroke direction change and the alternation of position, calculating a volume of the displacement unit and calculating the flow rate from the displacement unit by dividing the volume of the displacement unit by the calculated time.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 21, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Adriaan Gisolf, Kai Hsu, Youxiang Zuo, Chen Tao
  • Patent number: 9033043
    Abstract: A method for determining wettability of a solid, such as a reservoir rock material includes disaggregating the material, for example by grinding and placing the disaggregated material on the surface of the fluid. The wettability is analyzed based on whether a portion of the material floats on or sinks into the fluid. The method is well suited for heterogeneous solid materials that have mixed wetting characteristics and/or have varying surface types. The fluid can be evaluated as a potential treatment fluid or a component thereof that can be used for treating the rock formation. For example, the potential treatment fluid can include a surfactant or an oxidizing agent. A simple observation can be made whether substantially all of the material placed on the surface of the fluid sinks into the fluid, or the portions of floating and sinking material can be weighed.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: May 19, 2015
    Assignee: Schlumberger Technology Corporation
    Inventor: Jerald J. Hinkel
  • Patent number: 9019118
    Abstract: A drilling control system monitors and compares drilling and completion operation sensor values and autonomously acts in response to conditions such as a kick or surge. Sensors in various combinations may monitor return fluid flow rate, fluid inflow rate, wellhead bore pressure, temperature of returning fluid, torque, rate of penetration and string weight change. The control system has corresponding control logic to monitor, warn and act based on the sensor inputs. The actions may include the warning of support personnel, closing an annular blowout preventer, shearing drill pipe using a ram shear, pumping heavier fluid down choke and kill lines, disconnecting the riser or various other actions.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: April 28, 2015
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Eric L. Milne, Joseph P. Ebenezer
  • Publication number: 20150112599
    Abstract: Methods for determining the quality of data gathered in a wellbore in a subterranean formation including (a) collecting a formation fluid sample in the wellbore in the subterranean formation using a formation tester for receiving the formation fluid, wherein the formation tester is lowered to at least one depth in the wellbore in the subterranean formation by a conveyor; (b) acquiring a wellbore measurement (“WM”) from the least one depth with the formation tester; (c) determining from the WM a measured quality value (“MQV”); (d) assigning a threshold value (“TV”) to the MQV; (e) assigning a range value (“RV”) to the MQV, based on geometric scaling of the TV, the RV defining the limits of the MQV above and below the TV; and (f) calculating a score value (“SV”) based on the MQV, the TV, and the RV, wherein the SV is a number between 0 and 2*TV, and wherein the quality of the WM increases as the SV increases.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventors: Mark Proett, Sami Eyuboglu
  • Patent number: 9013322
    Abstract: An apparatus and method for well control and monitoring including an independent web server computer integrated with a pump controller located at each well in an oil field. The well controller locally controls the well pump, processes well and pump data, generates surface and downhole cards, and communicates production reports, recommendations for production improvements, and production statistics to remote sites via the internet. The controller can be queried remotely to provide production reports, etc. Furthermore, the controller can initiate alerts via email, text messaging, or internet messaging, for example, during fault conditions.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: April 21, 2015
    Assignee: Lufkin Industries, LLC
    Inventors: Alan L. Roberson, Doneil M. Dorado, David L. Pinnell, Eric S. Oestreich
  • Patent number: 9014994
    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: March 29, 2013
    Date of Patent: April 21, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Manus P. Henry, Michael S. Tombs
  • Patent number: 9002650
    Abstract: Methods and apparatus for determining phase fractions (relative concentrations) within a multiphase fluid mixture, in the presence of an injected hydrate inhibitor. Combining this phase fraction information with a hydrate inhibitor injection rate (HIIR) enables resolving oil and water flow rates for the phase fractions. The liquid flow rates and a total combined flow rate of the fluid mixture—determined based on a differential pressure of the fluid mixture through a given area—enable resolving a gas flow rate.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 7, 2015
    Assignee: Weatherford/Lamb, Inc.
    Inventors: John Lievois, Vijay Ramakrishnan, Babajide Adejuyigbe
  • Patent number: 8990020
    Abstract: A system and method for use in a downhole tool having a fluid density measurement device positioned therein are provided. In one example, the method includes deploying the downhole tool at a first station in a borehole. The downhole tool is moved from the first station to a second station in the borehole. A plurality of fluid density values of fluid within the borehole between the first and second stations are measured using the fluid density measurement device in the downhole tool. The plurality of fluid density values may represent a continuous log of fluid densities between the first and second stations.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 24, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Harold Pfutzner, Peter D. Wraight
  • Publication number: 20150066372
    Abstract: Methods and systems analyze continued flow data in well testing data.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Inventors: Qinglan Shi, Rong Chen, Yili Ling, Bin Zhang, Hua Zhao
  • Publication number: 20150057935
    Abstract: Methods, systems, devices, and products for estimating a parameter of interest of an earth formation. The method may include using a correction factor to conduct a flow rate analysis on fluid sampled from the formation via a probe contacting a wall of the borehole, wherein the correction factor compensates for total compressibility; determining at least one of: i) the product of formation porosity and total compressibility; ii) system compressibility; and iii) initial formation pressure; or determining a mobility of the formation using a slope of a linear relationship of a time-dependent pressure of the fluid with respect to a formation flow rate. The parameter of interest may be i) formation mobility or ii) formation permeability. The correction factor may be determined using formation compressibility. The correction factor may be determined using at least one of: i) gas saturation; ii) oil saturation; and iii) water saturation.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 26, 2015
    Applicant: Baker Hughes Incorporated
    Inventor: Jianghui Wu