Patents by Inventor Batakrishna Mandal
Batakrishna Mandal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110192592Abstract: A method of servicing a wellbore, comprising placing into a wellbore a first wellbore composition comprising a plurality of Micro-Electro-Mechanical System (MEMS) sensors having a first identifier, and determining positions in the wellbore of the MEMS sensors having the first identifiers.Type: ApplicationFiled: February 21, 2011Publication date: August 11, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Craig W. RODDY, Rick Covington, Krishna M. Ravi, Michael Bittar, Gary Frisch, Batakrishna Mandal, Paul Rodney, William Tapie
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Publication number: 20110192593Abstract: A method of servicing a wellbore, comprising placing at least one piece of equipment in the wellbore comprising micro-electro-mechanical system (MEMS) sensors, wherein the MEMS sensors are disposed in one or more composite or resin portions of the equipment, and gathering wellbore data from the MEMS sensors. A method of servicing a wellbore, comprising placing at least one piece of equipment in the wellbore comprising a micro-electro-mechanical system (MEMS) sensor data interrogation unit, wherein the data interrogation unit is disposed in one or more composite or resin portions of the equipment, and gathering wellbore data from MEMS sensors located in the wellbore via the data interrogation unit.Type: ApplicationFiled: February 21, 2011Publication date: August 11, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Craig W. RODDY, Rick Covington, Krishna M. Ravi, Clovis Bonavides, Gary Frisch, Gordon Moake, Batakrishna Mandal, Paul Rodney, William Tapie
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Publication number: 20110192597Abstract: A method of servicing a wellbore, comprising placing a plurality of Micro-Electro-Mechanical System (MEMS) sensors in a wellbore composition, pumping the wellbore composition into the wellbore at a flow rate, determining velocities of the MEMS sensors along a length of the wellbore, and determining an approximate cross-sectional area profile of the wellbore along the length of the wellbore from at least the velocities of the MEMS sensors and the fluid flow rate. A method of servicing a wellbore, comprising placing a plurality of Micro-Electro-Mechanical System (MEMS) sensors in a wellbore composition, pumping the wellbore composition into the wellbore, determining positions of the MEMS sensors relative to one or more known positions along a length of the wellbore, and determining an approximate cross-sectional area profile of the wellbore along the length of the wellbore from at least the determined positions of the MEMS sensors.Type: ApplicationFiled: February 21, 2011Publication date: August 11, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Craig W. RODDY, Rick Covington, Krishna M. Ravi, Clovis Bonavides, Gary Frisch, Batakrishna Mandal
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Publication number: 20110186290Abstract: A method of servicing a wellbore, comprising placing a wellbore composition comprising a plurality of Micro-Electro-Mechanical System (MEMS) sensors in the wellbore, placing a plurality of acoustic sensors in the wellbore, obtaining data from the MEMS sensors and data from the acoustic sensors using a plurality of data interrogation units spaced along a length of the wellbore, and transmitting the data obtained from the MEMS sensors and the acoustic sensors from an interior of the wellbore to an exterior of the wellbore. A method of servicing a wellbore, comprising placing a wellbore composition comprising a plurality of Micro-Electro-Mechanical System (MEMS) sensors in the wellbore, and obtaining data from the MEMS sensors using a plurality of data interrogation units spaced along a length of the wellbore, wherein one or more of the data interrogation units is powered by a turbo generator or a thermoelectric generator located in the wellbore.Type: ApplicationFiled: February 21, 2011Publication date: August 4, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Craig W. RODDY, Rick Covington, Krishna M. Ravi, Clovis Bonavides, Michael Bittar, Gordon Moake, Batakrishna Mandal
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Publication number: 20110187556Abstract: A method of servicing a wellbore, comprising placing a plurality of Micro-Electro-Mechanical System (MEMS) sensors in a wellbore composition, placing the wellbore composition in the wellbore, and obtaining data from the MEMS sensors using a plurality of data interrogation units spaced along a length of the wellbore. A method of servicing a wellbore, comprising placing a plurality of Micro-Electro-Mechanical System (MEMS) sensors in a wellbore composition, placing the wellbore composition in the wellbore, forming a network comprising the MEMS sensors, and transferring data obtained by the MEMS sensors from an interior of the wellbore to an exterior of the wellbore via the network.Type: ApplicationFiled: February 21, 2011Publication date: August 4, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Craig W. RODDY, Rick L. Covington, Krishna M. Ravi, MIchael Bittar, Gordon Moake, Batakrishna Mandal, Paul Rodney, William Tapie
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Patent number: 7705878Abstract: A system for obtaining video data is provided, the system comprising a video camera positioned down a bore-hole to obtain a plurality of video frames wherein the plurality of video frames comprises sequential video frames, wherein each of the sequential video frames contains information, and wherein a portion of the information of each of the sequential video frames comprises new information not found on a previous sequential video frame. The system also comprises a data extractor to extract information only from the portion comprising the new information from each sequential video frame.Type: GrantFiled: May 13, 2003Date of Patent: April 27, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Batakrishna Mandal, Wallace R. Gardner
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Publication number: 20100073189Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to acquire downhole data associated with a borehole casing, process a portion of the downhole data at a downhole location to provide processed data, regulate surface motor power received at a motor downhole, filter the surface motor power, and transmit the processed data to a surface location on a monoconductor that also carries the surface motor power. Additional apparatus, systems, and methods are disclosed.Type: ApplicationFiled: September 7, 2007Publication date: March 25, 2010Applicant: Halliburton Energy Services, Inc.Inventors: Batakrishna Mandal, Clovis Bonavides, Carl Dodge, Syed Ali, Alberto Quintero
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Publication number: 20100061183Abstract: An ultrasonic imaging method is provided. A wideband acoustic pulse is fired at a wall. A wideband response signal is received. The wideband response signal is processed to select an impedance measurement frequency. A wavelet having a characteristic frequency approximately equal to the impedance measurement frequency is fired. A wavelet response signal is received. A reflection coefficient is determined from the wavelet response signal. An impedance measurement is calculated from the reflection coefficient. Related tools and systems are also disclosed.Type: ApplicationFiled: November 19, 2009Publication date: March 11, 2010Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Batakrishna MANDAL, Clovis S. BONAVIDES
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Patent number: 7675814Abstract: A method and apparatus for generating an acoustic signal having a single mode of propagation along borehole walls. The method includes generating an n-pole (monopole, dipole, quadrupole, and so on) acoustic signal and calculating the tool position and borehole shape from the signals received at one or more receivers. If the tool contains matched sources and balanced receivers, is in the center of the borehole, and the borehole is circular, the pure, single mode acoustic signal will propagate along the borehole walls with a single mode of propagation. If the acoustic signal traveling along borehole walls does not have a single mode of propagation, the signal's amplitudes and time delays are adjusted to produce a second acoustic signal. The second acoustic signal's amplitudes and time delays are further adjusted until the signal traveling along the borehole walls has a single mode of propagation.Type: GrantFiled: December 1, 2008Date of Patent: March 9, 2010Assignee: Halliburton Energy Services, Inc.Inventor: Batakrishna Mandal
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Patent number: 7660195Abstract: In some embodiments, an apparatus and a system, as well as a method and an article, may include generating attenuation values associated with a set of multiple signals received by multiple receivers from a transmitted signal as a function of reception time and material velocity. The attenuation values may be stored in a memory and/or displayed on a display, perhaps in conjunction with a semblance map.Type: GrantFiled: August 20, 2004Date of Patent: February 9, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Batakrishna Mandal, Clovis Bonavides
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Patent number: 7656747Abstract: An ultrasonic imaging method is provided. A wideband acoustic pulse is fired at a wall. A wideband response signal is received. The wideband response signal is processed to select an impedance measurement frequency. A wavelet having a characteristic frequency approximately equal to the impedance measurement frequency is fired. A wavelet response signal is received. A reflection coefficient is determined from the wavelet response signal. An impedance measurement is calculated from the reflection coefficient. Related tools and systems are also disclosed.Type: GrantFiled: July 14, 2006Date of Patent: February 2, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Batakrishna Mandal, Clovis S. Bonavides
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Publication number: 20090073806Abstract: A method and apparatus for generating an acoustic signal having a single mode of propagation along borehole walls. The method includes generating an n-pole (monopole, dipole, quadrupole, and so on) acoustic signal and calculating the tool position and borehole shape from the signals received at one or more receivers. If the tool contains matched sources and balanced receivers, is in the center of the borehole, and the borehole is circular, the pure, single mode acoustic signal will propagate along the borehole walls with a single mode of propagation. If the acoustic signal traveling along borehole walls does not have a single mode of propagation, the signal's amplitudes and time delays are adjusted to produce a second acoustic signal. The second acoustic signal's amplitudes and time delays are further adjusted until the signal traveling along the borehole walls has a single mode of propagation.Type: ApplicationFiled: December 1, 2008Publication date: March 19, 2009Applicant: Halliburton Energy Services, Inc.Inventor: Batakrishna Mandal
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Patent number: 7392135Abstract: Methods and apparatus are provided for reducing and/or substantially eliminating sensitivity mismatch of acoustic receivers used with acoustic sources to determine acoustic properties of geologic formations as a logging tool traverses the formations. Methods are directed to detecting waveform arrival times at receivers, determining places in a well where arrival times of waves are substantially the same at a plurality of receivers, and estimating effective receiver sensitivities and equalization factors using Stoneley wave amplitudes and windowed deconvolution of Stoneley waves. Methods are further directed to correcting wave amplitudes using estimated effective receiver sensitivities and equalization factors for receivers.Type: GrantFiled: December 30, 2005Date of Patent: June 24, 2008Assignee: Halliburton Energy Services Inc.Inventors: Georgios L. Varsamis, Joakim Oscar Blanch, Arthur C. H. Cheng, Calvin Wisner Kessler, Denis Schmitt, Batakrishna Mandal
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Patent number: 7350568Abstract: A method for logging a well. Includes receiving energy with at least one array of elements coupled to a drill bit, wherein the at least one array of elements functions as an electronic array. An apparatus for logging a well includes a drill bit and at least one array of elements coupled to the drill bit, wherein the at least one array of elements functions as an electronic array.Type: GrantFiled: February 9, 2005Date of Patent: April 1, 2008Assignee: Halliburton Energy Services, Inc.Inventors: Batakrishna Mandal, Michael S. Bittar
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Publication number: 20070156359Abstract: The present invention relates generally to a method and apparatus utilized in hydrocarbon exploration. More specifically, the present invention relates to the utilization of acoustic sources and receivers to determine acoustic properties of geologic formations as a logging tool traverses them, be it a wireline logging tool and/or a logging while drilling (LWD) tool. More particularly, the present invention is directed to methods of, and apparatus for, adaptive equalization of receivers to reduce and/or substantially eliminate sensitivity mismatch.Type: ApplicationFiled: December 30, 2005Publication date: July 5, 2007Inventors: Georgios Varsamis, Joakim Blanch, Arthur Cheng, Calvin Kessler, Denis Schmitt, Batakrishna Mandal
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Publication number: 20070152054Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to select an amount of imaging coverage associated with a substantially tubular object and a rotary scanner coupled to a telemetry system. Determining circumferential and longitudinal scan sampling intervals to provide substantially full coverage of the substantially tubular object may be included. Waveform sampling and transducer driving waveform parameters may also be determined according to an available data transmission bandwidth associated with the telemetry system.Type: ApplicationFiled: January 3, 2006Publication date: July 5, 2007Inventors: Clovis Bonavides, Batakrishna Mandal
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Publication number: 20070019506Abstract: An ultrasonic imaging method is provided. A wideband acoustic pulse is fired at a wall. A wideband response signal is received. The wideband response signal is processed to select an impedance measurement frequency. A wavelet having a characteristic frequency approximately equal to the impedance measurement frequency is fired. A wavelet response signal is received. A reflection coefficient is determined from the wavelet response signal. An impedance measurement is calculated from the reflection coefficient. Related tools and systems are also disclosed.Type: ApplicationFiled: July 14, 2006Publication date: January 25, 2007Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Batakrishna Mandal, Clovis Bonavides
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Patent number: 7099810Abstract: An acoustic tool that provides a reduced tool mode and enhanced accuracy for estimating shear wave propagation slowness in slow formations is disclosed. In one embodiment, the acoustic tool comprises: an acoustic source, an array of acoustic receivers, and an internal controller. The acoustic source excites waves that propagate in a quadrupole mode. The internal controller processes signals from the array of acoustic receivers to determine a peak phase semblance having a slowness value that varies with frequency. The minimum slowness value associated with the peak phase semblance provides an accurate estimate of the shear wave propagation slowness. The acoustic source preferably includes four source elements. The elements that are 90° apart are preferably driven in inverse-phase to obtain the quadrupole excitation pattern.Type: GrantFiled: June 20, 2001Date of Patent: August 29, 2006Assignee: Halliburton Energy Services, Inc.Inventor: Batakrishna Mandal
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Publication number: 20060175057Abstract: A method for logging a well is provided. The method includes receiving energy with at least one array of elements coupled to a drill bit, wherein the at least one array of elements functions as an electronic array. An apparatus for logging a well is also provided. The apparatus includes a drill bit and at least one array of elements coupled to the drill bit, wherein the at least one array of elements functions as an electronic array.Type: ApplicationFiled: February 9, 2005Publication date: August 10, 2006Inventors: Batakrishna Mandal, Michael Bittar
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Patent number: 7089119Abstract: A system and method is provided for characterizing earth formations. In one embodiment, the method includes passing a logging tool through a borehole and repeatedly: (a) triggering an acoustic wave generator; (b) recording acoustic waveforms received by receivers in the logging tool; (c) determining a time semblance of the recorded acoustic waveforms; and (d) smoothing the time semblance. In a different embodiment, a phase semblance of the recorded acoustic waveforms is determined and smoothed. The smoothing may be performed using an adaptive wavelet denoising technique or an adaptive moving average filter technique. In each case the average time or frequency spacing between semblance peaks is preferably determined and used to adapt the smoothing operation in a manner that varies with the slowness value s.Type: GrantFiled: April 11, 2005Date of Patent: August 8, 2006Assignee: Halliburton Energy Services, Inc.Inventor: Batakrishna Mandal