Abstract: A formation tester comprises a body having an outlet; a probe extendable from the body and having a sealing pad; and a flow line within the body, wherein the flow line has an entry end connectable to the probe and has an exit end connectable to the outlet in the body; and a reactive filter material in the flow line downstream of the entry end of the flow line, wherein the reactive filter material sorbs and entraps an analyte in a wellbore fluid.

Abstract: Identification of aromatic interactions, e.g. ?-interactions, of mesophase formation, and methods related thereto, including the use of fluorescent light and optical imaging and/or detection schemes for the identification of ?-interactions of mesophase formation, and methods related thereto. Methods include interacting fluorescent light with a pitch composition; receiving fluorescent light emissions from the pitch composition; and detecting the onset of mesophase formation upon detecting a normalized fluorescence intensity (I/I0) of the fluorescent light emissions in the range of about 0.4 to about 0.7 at a wavelength in the range of about 430 nm to about 470 nm for an exposure of about 1.5 seconds.

Abstract: Downhole tool is provided that includes a body, an intake port for receiving fluid from external the body, a pump, a filtration device, and an exit port. The pump is in fluid communication with the intake port for withdrawing fluid through the intake port. The filtration device has a particulate removing filter, and a flow line extending from the intake port to the filtration device. The filtration device is contained within the body and is in fluid communication with the intake port. The exit port is in fluid communication with the filtration device for ejecting the fluid to external the body.

Abstract: Downhole tool is provided that includes a body, an intake port for receiving fluid from external the body, a pump, a filtration device, and an exit port. The pump is in fluid communication with the intake port for withdrawing fluid through the intake port. The filtration device has a particulate removing filter, and a flow line extending from the intake port to the filtration device. The filtration device is contained within the body and is in fluid communication with the intake port. The exit port is in fluid communication with the filtration device for ejecting the fluid to external the body.

Abstract: A tool including a dispersive spectrometer deployable within a wellbore is provided. The dispersive spectrometer includes a waveguide layer to detect electromagnetic radiation according to wavelength. The dispersive spectrometer also includes a plurality of detector elements disposed along the waveguide layer to detect electromagnetic radiation associated with a portion of the wavelength of the electromagnetic radiation. A method for using the tool in a subterranean application is also provided.

Abstract: A formation tester comprises a body having an outlet; a probe extendable from the body and having a sealing pad; and a flow line within the body, wherein the flow line has an entry end connectable to the probe and has an exit end connectable to the outlet in the body; and a reactive filter material in the flow line downstream of the entry end of the flow line, wherein the reactive filter material sorbs and entraps an analyte in a wellbore fluid.

Abstract: Devices, methods, and systems employing a multivariate optical computing sensor comprising a multivariate optical element calibrated to independently measure an electromagnetic spectral pattern of a cultivation characteristic of an algae stain in a cultivating algae water slurry and a detector for receiving output signals indicative of the cultivation characteristic. The cultivation characteristic may include, for example, total organic carbon, total carbohydrate, or fatty acid methyl esters.

Abstract: The embodiments herein relate to formation testers having reactive filter materials for detecting analytes in subterranean formation operations. The formation include a body having an outlet, a probe extendable from the body and having a sealing pad and a probe snorkel tube, a flow line within the body, wherein the flow line has an entry end connectable to the probe snorkel tube and an exit end connectable to the outlet in the body, a sample chamber fluidically connectable to the flow line downstream of the entry end of the flow line, and a reactive filter material in the flow line. The reactive filter material sorbs an analyte in a wellbore fluid.

Abstract: A design of an integrated computational element (ICE) includes specification of a substrate and a plurality of layers, their respective constitutive materials, target thicknesses and refractive indices, where refractive indices of respective materials of adjacent layers are different from each other, and a notional ICE fabricated in accordance with the ICE design is related to a characteristic of a sample. One or more layers of the plurality of layers of an ICE are formed based on the ICE design, such that the formed layer(s) includes(e) corresponding material(s) from among the specified constitutive materials of the ICE. Characteristics of probe-light interacted with the formed layer(s) are measured at two or more temperatures. Temperature dependence(ies) of one or more refractive indices of the corresponding material(s) of the formed layers is(are) determined using the measured characteristics.

Abstract: Systems and methods are provided to allow for characterization of feeds, intermediate effluents, and/or products during lubricant base stock production. More generally, the systems and methods can allow for characterization of aromatics in various types of hydroprocessed intermediate effluents and/or products. In some aspects, the characterization can include measuring a fluorescence excitation-emission matrix spectrum for a sample, and then generating a representation of the spectrum by fitting the measured spectrum to a linear combination of spectra corresponding to compounds or compound classes. As the hydroprocessing process continues, additional measured spectra and comparing the fit quality of the representation to the subsequently measured spectra. When the fit quality falls below a threshold value, the loss in fit quality indicates a change in the number and/or distribution of aromatics in the sample.

Abstract: Methods and systems for using a cooling apparatus comprising an elastocaloric material to reduce the temperature of downhole packages in a subterranean formation are provided herein. In one or more embodiments, the methods of the present disclosure comprise: disposing a downhole package in a wellbore penetrating a portion of a subterranean formation; and disposing a cooling apparatus comprising an elastocaloric material and at least one actuator downhole in the wellbore, wherein the cooling apparatus is adjacent to the downhole package. In one or more embodiments, the systems of the present disclosure comprise: a downhole package having a temperature; and a cooling apparatus coupled to the downhole package, wherein the cooling apparatus comprises an elastocaloric material coupled to at least one actuator, wherein the cooling apparatus is configured to reduce the temperature of the downhole package.

Abstract: Disclosed are methods of fabricating an integrated computational element for use in an optical computing device. One method includes providing a substrate that has a first surface and a second surface substantially opposite the first surface, depositing multiple optical thin films on the first and second surfaces of the substrate via a thin film deposition process, and thereby generating a multilayer film stack device, cleaving the substrate to produce at least two optical thin film stacks, and securing one or more of the at least two optical thin film stacks to a secondary optical element for use as an integrated computational element (ICE).

Abstract: Various embodiments of optical computing devices utilized in healthcare-related applications.

Abstract: A system includes a computational system to receive a design of an integrated computational element (ICE) including specification of substrate and layers. Additionally, the system includes a deposition source to provide a deposition plume having a plume spatial profile, and a support having a cylindrical surface. The cylindrical surface of the support is spaced apart from the deposition source and has a shape that corresponds to the plume spatial profile in a particular cross-section orthogonal to a longitudinal axis of the cylindrical surface of the support, such that, when the substrate support, with the supported instances of the substrate distributed over the cylindrical surface of the substrate support, is translated relative to the deposition plume along the longitudinal axis of the cylindrical surface of the substrate support, thicknesses of instances of each of the deposited layers are substantially uniform across the plurality of instances of the ICE.

Abstract: Downhole tool is provided that includes a body, an intake port for receiving fluid from external the body, a pump, a filtration device, and an exit port. The pump is in fluid communication with the intake port for withdrawing fluid through the intake port. The filtration device has a particulate removing filter, and a flow line extending from the intake port to the filtration device. The filtration device is contained within the body and is in fluid communication with the intake port. The exit port is in fluid communication with the filtration device for ejecting the fluid to external the body.

Abstract: The present application relates sensing reactive components in fluids by monitoring band gap changes to a material having interacted with the reactive components via physisorption and/or chemisorption. In some embodiments, the sensors of the present disclosure include the material as a reactive surface on a substrate. The band gap changes may be detected by measuring conductance changes and/or spectroscopic changes. In some instances, the sensing may occur downhole during one or more wellbore operations like drilling, hydraulic fracturing, and producing hydrocarbons.

Abstract: Systems and methods are provided to allow for characterization of feeds, intermediate effluents, and/or products during lubricant base stock production. More generally, the systems and methods can allow for characterization of aromatics in various types of hydroprocessed intermediate effluents and/or products. In some aspects, the characterization can include measuring a fluorescence excitation-emission matrix spectrum for a sample, and then generating a representation of the spectrum by fitting the measured spectrum to a linear combination of spectra corresponding to compounds or compound classes. As the hydroprocessing process continues, additional measured spectra and comparing the fit quality of the representation to the subsequently measured spectra. When the fit quality falls below a threshold value, the loss in fit quality indicates a change in the number and/or distribution of aromatics in the sample.

Abstract: The present application relates sensing reactive components in fluids by monitoring band gap changes to a material having interacted with the reactive components via physisorption and/or chemisorption. In some embodiments, the sensors of the present disclosure include the material as a reactive surface on a substrate. The band gap changes may be detected by measuring conductance changes and/or spectroscopic changes. In some instances, the sensing may occur downhole during one or more wellbore operations like drilling, hydraulic fracturing, and producing hydrocarbons.

Abstract: The disclosed embodiments include a method, apparatus, and computer program product for generating a cross-sensor standardization model. For example, one disclosed embodiment includes a system that includes at least one processor; at least one memory coupled to the at least one processor and storing instructions that when executed by the at least one processor performs operations comprising selecting a representative sensor from a group of sensors comprising at least one of same primary optical elements and similar synthetic optical responses and calibrating a cross-sensor standardization model based on a matched data pair for each sensor in the group of sensors and for the representative sensor. In one embodiment, the at least one memory coupled to the at least one processor and storing instructions that when executed by the at least one processor performs operations further comprises generating the matched data pair, wherein the matched data pair comprises calibration input data and calibration output data.

Abstract: Techniques include receiving a design of an integrated computational element (ICE) including specification of a substrate and a plurality of layers, their respective target thicknesses and complex refractive indices, complex refractive indices of adjacent layers being different from each other, and a notional ICE fabricated in accordance with the ICE design being related to a characteristic of a sample; forming at least some of the layers of a plurality of ICEs in accordance with the ICE design using a deposition source, where the layers of the ICEs being formed are supported on a support that is periodically moved relative to the deposition source during the forming; monitoring characteristics of the layers of the ICEs during the forming, the monitoring of the characteristics being performed using a timing of the periodic motion of the support relative to the deposition source; and adjusting the forming based on results of the monitoring.