Patent application number | Description | Published |
20090185445 | BOREHOLE APPARATUS AND METHODS FOR SIMULTANEOUS MULTIMODE EXCITATION AND RECEPTION TO DETERMINE ELASTIC WAVE VELOCITIES, ELASTIC MODULII, DEGREE OF ANISOTROPY AND ELASTIC SYMMETRY CONFIGURATIONS - An acoustic borehole logging system for generation and detection of multipole modes used to determine elastic properties of earth formations characterized as inhomogeneous anisotropic solids. The system concurrently generates and senses monopole, dipole, quadrupole and any higher order pole in the borehole/formation system in order to characterize the elastic properties and stress state of material penetrated by the borehole. Multipole modes of all orders are induced simultaneously without the need for separate transmitter and receiver systems. Performance of the logging system is not compromised due to eccentering of the axis of the tool in the borehole, tool tilt with respect to the axis of the borehole, or mismatch of response sensitivity of multiple receivers within the tool. The system comprises apparatus for generating and sensing acoustic signals in a borehole in an earth formation, and further comprises a processing method by which the sensor response signals are processed and analyzed to obtain desired formation parameters of interest. | 07-23-2009 |
20090185447 | BOREHOLE APPARATUS AND METHODS FOR SIMULTANEOUS MULTIMODE EXCITATION AND RECEPTION TO DETERMINE ELASTIC WAVE VELOCITIES, ELASTIC MODULII, DEGREE OF ANISOTROPY AND ELASTIC SYMMETRY CONFIGURATIONS - An acoustic borehole logging system for generation and detection of multipole modes used to determine elastic properties of earth formations characterized as inhomogeneous anisotropic solids. The system concurrently generates and senses monopole, dipole, quadrupole and any higher order pole in the borehole/formation system in order to characterize the elastic properties and stress state of material penetrated by the borehole. Multipole modes of all orders are induced simultaneously without the need for separate transmitter and receiver systems. Performance of the logging system is not compromised due to eccentering of the axis of the tool in the borehole, tool tilt with respect to the axis of the borehole, or mismatch of response sensitivity of multiple receivers within the tool. The system comprises apparatus for generating and sensing acoustic signals in a borehole in an earth formation, and further comprises a processing method by which the sensor response signals are processed and analyzed to obtain desired formation parameters of interest. | 07-23-2009 |
20100121623 | METHODS AND SYSTEMS FOR CONSTRUCTING AND USING A SUBTERRANEAN GEOMECHANICS MODEL SPANNING LOCAL TO ZONAL SCALE IN COMPLEX GEOLOGICAL ENVIRONMENTS - In an exemplary embodiment, a method and system is disclosed for developing a subterranean geomechanics model of a complex geological environment. The method can include estimating a pore pressure field, a stress field, a geomechanics property field, and a geological structure field from a geological concept model; geostatistically interpolating vectors and tensors from the estimated fields; and combining the results from the estimated fields and the geostatistically interpolated vectors and tensors to derive a geostatistical geomechanical model of the geological environment. | 05-13-2010 |
20100250206 | N-PHASIC ELEMENT METHOD FOR CALCULATING A FULLY COUPLED RESPONSE OF MULTIPHASE COMPOSITIONAL FLUID FLOW AND A SYSTEM FOR UNCERTAINTY ESTIMATION - In an exemplary embodiment, a method is disclosed for developing an N-phasic finite element model for performing fully coupled analyses of multi-phase compositional fluid flow and heat flow in nonlinearly deforming porous solid media with time-dependent failure. The method can include formulating a finite element model of the behavior of a coupled solid-fluid formation, having complex geometry and behavior, and applying the model to derive the response of the formation in the form of one or more displacement fields for the solid phases and one or more pressure fields for the fluid phases in a zone of interest in a formation. In an exemplary embodiment, a system is disclosed for estimating the uncertainties in the derived displacement and pressure field solutions for the response of the fully coupled solid-fluid phases. | 09-30-2010 |
20100309749 | METHODS AND SYSTEMS FOR MULTICOMPONENT TIME-LAPSE SEISMIC MEASUREMENT TO CALCULATE TIME STRAINS AND A SYSTEM FOR VERIFYING AND CALIBRATING A GEOMECHANICAL RESERVOIR SIMULATOR RESPONSE - A system, method, and computer program configured to provide an electronic method for seismic time-lapse characterization of an underground formation are provided. The method includes decomposing, with microprocessor executing a predefined set of instructions stored in a memory, baseline and monitor seismic survey data of a formation into a four dimensional Clifford Algebraic form; extracting, via the microprocessor, time delays from a matrix of decomposed sensor measurement vectors generated based on the four dimensional Clifford Algebra form; and determining, via the processor, time strains for the underground formation from differences in the extracted time delays from the matrix before displaying the determined time strains for the underground formation to a user via a monitor or a hard copy printed document. A procedure is also provided to calibrate and refine the static and dynamic models of an underground formation using the results from the seismic time-lapse characterization. | 12-09-2010 |
20130030782 | N-PHASIC FINITE ELEMENT METHOD FOR CALCULATING A FULLY COUPLED RESPONSE OF MULTIPHASE COMPOSITIONAL FLUID FLOW AND A SYSTEM FOR UNCERTAINTY ESTIMATION OF THE CALCULATED RESERVOIR RESPONSE - In an exemplary embodiment, a method is disclosed for developing an N-phasic finite element model for performing fully coupled analyses of multi-phase compositional fluid flow and heat flow in nonlinearly deforming porous solid media with time-dependent failure. The method can include formulating a finite element model of the behavior of a coupled solid-fluid formation, having complex geometry and behavior, and applying the model to derive the response of the formation in the form of one or more displacement fields for the solid phases and one or more pressure fields for the fluid phases in a zone of interest in a formation. In an exemplary embodiment, a system is disclosed for estimating the uncertainties in the derived displacement and pressure field solutions for the response of the fully coupled solid-fluid phases. | 01-31-2013 |
20130138410 | METHODS AND SYSTEMS FOR CONSTRUCTING AND USING A SUBTERRANEAN GEOMECHANICS MODEL SPANNING LOCAL TO ZONAL SCALE IN COMPLEX GEOLOGICAL ENVIRONMENTS - In an exemplary embodiment, a method and system is disclosed for developing a subterranean geomechanics model of a complex geological environment. The method can include estimating a pore pressure field, a stress field, a geomechanics property field, and a geological structure field from a geological concept model; geostatistically interpolating vectors and tensors from the estimated fields; and combining the results from the estimated fields and the geostatistically interpolated vectors and tensors to derive a geostatistical geomechanical model of the geological environment. | 05-30-2013 |
20150324503 | METHODS AND SYSTEMS FOR MULTICOMPONENT TIME-LAPSE SEISMIC MEASUREMENT TO CALCULATE TIME STRAINS AND A SYSTEM FOR VERIFYING AND CALIBRATING A GEOMECHANICAL RESERVOIR SIMULATOR RESPONSE - A system, method, and computer program configured to provide an electronic method for seismic time-lapse characterization of an underground formation are provided. The method includes decomposing, with microprocessor executing a predefined set of instructions stored in a memory, baseline and monitor seismic survey data of a formation into a four dimensional Clifford Algebraic form; extracting, via the microprocessor, time delays from a matrix of decomposed sensor measurement vectors generated based on the four dimensional Clifford Algebra form; and determining, via the processor, time strains for the underground formation from differences in the extracted time delays from the matrix before displaying the determined time strains for the underground formation to a user via a monitor or a hard copy printed document. A procedure is also provided to calibrate and refine the static and dynamic models of an underground formation using the results from the seismic time-lapse characterization. | 11-12-2015 |