Abstract: A method and apparatus for performing an operation in a wellbore penetrating the earth's formation. The apparatus includes a string and a first processor. The string is disposed in the wellbore. The first processor a first processor determines, by using a first friction test at a first friction test time, a first friction parameter between a first selected subregion and the wellbore and a second friction parameter between a second selected subregion and the wellbore.

Abstract: A method and apparatus for performing an operation in a wellbore penetrating the earth's formation. The apparatus includes a string and a first processor. The string is disposed in the wellbore. The first processor determines, by using a first friction test at a first friction test time, a first friction parameter between a first selected subregion and the wellbore and a second friction parameter between a second selected subregion and the wellbore.

Abstract: Methods and systems for predicting downhole measurement data at the earth surface include predicting a first estimate value of a property of interest using a first processor in a downhole tool using a first predictor and predicting a second estimate value of the property of interest using a second processor of a surface unit and using a second predictor, the second predictor including identical data processing as the first predictor. A measurement value of the property of interest is obtained using a sensor arranged in the downhole tool. The first processor compares the measurement value with the first estimate value and determines if the measurement value is within a predetermined threshold relative to the first estimate value. In response to the measurement value being within the predetermined threshold of the first estimate value, a wellbore operation based on the second estimate value is performed using the second processor.

Abstract: Examples of techniques for performing a wellbore construction operation in a wellbore are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes: performing a rheology test on a test fluid, the test fluid being representative of a fluid pumped through the wellbore, to generate test fluid data; performing, by the processing device, a data analysis on the test fluid data to generate at least one parameterized correlation; measuring a first property of the fluid to generate measured data; calculating, by the processing device, a second property of the fluid in the wellbore by using the parameterized correlations and the measured data to generate calculated data; and changing a parameter of the wellbore construction operation based at least in part on the calculated data.

Abstract: A method and apparatus for performing an operation in a wellbore penetrating the earth's formation. The apparatus includes a string and a first processor. The string is disposed in the wellbore. The first processor a first processor determines, by using a first friction test at a first friction test time, a first friction parameter between a first selected subregion and the wellbore and a second friction parameter between a second selected subregion and the wellbore.

Abstract: Separating flexibly rolled strip material can include a buffer device for temporarily storing the flexibly rolled strip material; a first feed device behind the buffer device; at least one length measuring device for continuously measuring a length of the strip material; a thickness measuring device for continuously measuring a thickness of the strip material along the length; a second feed device behind the first feed device; a separating device behind the second feed device; the first and second feed devices being configured to move the strip material from the buffer device to the separating device depending on the thickness measurement and the length measurement; the thickness measuring device being arranged between the buffer device and the first feed device; and the length measuring device being arranged behind the first feed device.

Abstract: Producing a product from flexibly rolled metallic strip material comprises feeding a flexibly rolled strip material; determining a measured thickness profile of the strip material over the length of the strip material and calculating a desired cutting position for a blank to be produced from the strip material; separating a blank from the strip material in the desired cutting position; rotating the blank depending on the determined measured thickness profile such that the blank is aligned with its thickness profile in a defined processing position which differs from the desired cutting position; processing the blank in the processing position by a processing unit, wherein the blank is processed to form a product.

Abstract: A drilling system and method of obtaining a flow pattern in a wellbore. The drilling system includes a device for adjusting an operational parameter of the drilling system, and a processor. The processor trains a machine learning program to identify a flow boundary in parameter space between a first flow pattern region related to a first flow pattern for a multiphase flow and a second flow pattern region related to a second flow pattern for the multiphase flow. The processor identifies the flow boundary for a flow of the multiphase flow in the wellbore and adjusts an operating parameter of the drilling system in the wellbore based on the identified flow boundary to operate the drilling system in one of the first flow pattern region and the second flow pattern region to obtain one of the first flow pattern and the second flow pattern in the wellbore.

Abstract: An earth-boring system for generating a fluid flow model of a borehole may include a drill string, and a model generation system. The model generation system may include a memory device and a processor. The memory device may store a plurality of mathematical simulations of a borehole. The processor may receive real-time operational data, analyze the real-time operational data via one or more of the mathematical simulations, identify a mathematical simulation that most closely matches the real-time operational data, and generate a simplified mathematical fluid flow model utilizing both the mathematical simulation and the real-time operational data.

Abstract: A technique for managing data storage provides multiple physical computing machines and block storage arranged in a NAS (network attached storage) cluster. The physical computing machines run NAS servers, with each NAS server including an FSDB (file system database) that identifies a set of file systems that belong to the NAS server. LUNs (Logical UNits) in the block storage provide backing store for the set of file systems of each NAS server. The NAS cluster manages access to a file system namespace for a set of file systems, including for example Distributed File System (DFS) typically accessed using the Server Message Block (SMB) protocol, by clients of different types, including for example clients using the Network File System (NFS) protocol.

Abstract: Examples of techniques for performing a wellbore construction operation in a wellbore are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes: performing a rheology test on a test fluid, the test fluid being representative of a fluid pumped through the wellbore, to generate test fluid data; performing, by the processing device, a data analysis on the test fluid data to generate at least one parameterized correlation; measuring a first property of the fluid to generate measured data; calculating, by the processing device, a second property of the fluid in the wellbore by using the parameterized correlations and the measured data to generate calculated data; and changing a parameter of the wellbore construction operation based at least in part on the calculated data.

Abstract: A method of drilling a borehole in an earth formation includes deploying a drilling assembly including a drill bit and a drill string, and performing a drilling operation according to one or more operational parameters to advance the drilling assembly through the formation, wherein performing the drilling operation includes rotating the drill bit and at least a portion of the drill string. The method also includes, during the advancing, monitoring a downhole condition, determining whether the downhole condition indicates at least one of a cuttings accumulation in the borehole and wear of a downhole component, and in response to the downhole condition indicating the cuttings accumulation or the wear, adjusting at least one operational parameter to induce or adjust an oscillating motion in the drill string, the oscillating motion causing at least one of a reduction in the cuttings accumulation and a reduction of wear of the downhole component.

Abstract: A method for estimating a time at which a pressure window relevant observation occurred relating to an event that occurred in an open borehole penetrating an earth formation includes: receiving with a processor a pressure window relevant observation that provides input to adjusting a pressure window for drilling fluid for drilling the borehole; and estimating with the processor a time window in which a physical parameter, a chemical parameter, or a process that caused the pressure window relevant observation to occur, the time window having a start time and an end time.

Abstract: A method of drilling a borehole in an earth formation includes deploying a drilling assembly including a drill bit and a drill string, and performing a drilling operation according to one or more operational parameters to advance the drilling assembly through the formation, wherein performing the drilling operation includes rotating the drill bit and at least a portion of the drill string. The method also includes, during the advancing, monitoring a downhole condition, determining whether the downhole condition indicates at least one of a cuttings accumulation in the borehole and wear of a downhole component, and in response to the downhole condition indicating the cuttings accumulation or the wear, adjusting at least one operational parameter to induce or adjust an oscillating motion in the drill string, the oscillating motion causing at least one of a reduction in the cuttings accumulation and a reduction of wear of the downhole component.

Abstract: A method for estimating a time at which a pressure window relevant observation occurred relating to an event that occurred in an open borehole penetrating an earth formation includes: receiving with a processor a pressure window relevant observation that provides input to adjusting a pressure window for drilling fluid for drilling the borehole; and estimating with the processor a time window in which a physical parameter, a chemical parameter, or a process that caused the pressure window relevant observation to occur, the time window having a start time and an end time.

Abstract: Disclosed is a method for estimating a geometry of a borehole penetrating the earth. The method includes: performing a plurality of borehole caliper measurements with N transducers at a plurality of times, wherein for each time a measurement set comprises measurements made by the N transducers at that time; dividing a cross-section of the borehole into S sectors; obtaining an estimate of the borehole geometry by connecting representative radius points in adjacent sectors; displacing each measurement set according to a displacement vector related to an offset of each measurement set from the estimated geometry if the displacement vector exceeds a selection criterion; iterating the obtaining an estimate of the borehole geometry and the displacing each measurement set based on a latest displacement vector; and providing a latest obtained estimate as the geometry of the borehole when all of the displacement vectors no longer exceed the selection criterion for the displacing.

Abstract: Disclosed herein is a method of locating and quantifying friction between a drillstring and a wellbore. The method includes, positioning a plurality of sensors within a wellbore, communicatively coupling the plurality of sensors, monitoring signals from the plurality of sensors, logging the sensed signals versus time versus depth of each of the plurality of sensors, locating at least one friction zone along the drillstring within the wellbore based on the logging and quantifying friction in the at least one friction zone based on the logging.

Abstract: Disclosed is a method for estimating a geometry of a borehole penetrating the earth. The method includes: performing a plurality of borehole caliper measurements with N transducers at a plurality of times, wherein for each time a measurement set comprises measurements made by the N transducers at that time; dividing a cross-section of the borehole into S sectors; obtaining an estimate of the borehole geometry by connecting representative radius points in adjacent sectors; displacing each measurement set according to a displacement vector related to an offset of each measurement set from the estimated geometry if the displacement vector exceeds a selection criterion; iterating the obtaining an estimate of the borehole geometry and the displacing each measurement set based on a latest displacement vector; and providing a latest obtained estimate as the geometry of the borehole when all of the displacement vectors no longer exceed the selection criterion for the displacing.