Halliburton Energy Services, Inc.

Michael Neil Simcock

David L Perkins

Christopher Michael Jones

Robert Paul Freese

William Joseph Soltmann

Michael L Myrick

A single Integrated Computational Element ('ICE') predictive of multiple sample characteristics.

Integrated computational element designed for multi-characteristic detection

A method controls fabrication of a multi-layered integrated computational element designed to have a target optical spectrum. A transfer function is generated relating a blue wavelength, shift between an as-annealed optical spectrum and an as-fabricated optical spectrum of a first integrated computational element at a standard temperature. Using the transfer function, an initial compensating red shift is incorporated into a second integrated computational element such that the as-annealed optical spectrum of the second integrated computational element matches the target optical spectrum.

Method for fabrication control of an optical integrated computational element

An optical computing device utilizes an Integrated Computational Element ('ICE') core to correct calibration transfer errors in the device.

Correction of optical device throughput errors using integrated computational elements

Optical computing devices are disclosed. One exemplary optical computing device includes an electromagnetic radiation source configured to optically interact with a sample and at least two integrated computational elements. The at least two integrated computational elements are configured to produce optically interacted light and further configured to be associated with a characteristic of the sample. The optical computing device further includes a first detector arranged to receive the optically interacted light from the at least two integrated computational elements and thereby generate a first signal corresponding to the characteristic of the sample.

Methods and devices for optically determining a characteristic of a substance using integrated computational elements

Optical computing devices containing one or more integrated computational elements may be used to produce two or more detector output signals that are computationally combinable to determine a characteristic of a sample. The devices may comprise a first integrated computational element and a second integrated computational element, each integrated computational element having an optical function associated therewith, and the optical function of the second integrated computational element being at least partially offset in wavelength space relative to that of the first integrated computational element; an optional electromagnetic radiation source; at least one detector configured to receive electromagnetic radiation that has optically interacted with each integrated computational element and produce a first signal and a second signal associated therewith; and a signal processing unit operable for computationally combining the first signal and the second signal to determine a characteristic of a sample.

Devices having one or more integrated computational elements and methods for determining a characteristic of a sample by computationally combining signals produced therewith

A tool sensor calibration system and tool calibration method are disclosed herein. A tool sensor calibration system () comprises a flow pipe (), an isolation cell () in fluid communication with the flow pipe, a sensor () positioned proximate to the isolation cell, a fluid chamber () containing a reference fluid () with a known property value, and a first valve () coupled to the fluid chamber that provides selective fluid communication between the fluid chamber and the flow pipe. A tool calibration method comprises introducing a first fluid () into a flow pipe, introducing a reference fluid into the flow pipe from a fluid chamber in fluid communication with the flow pipe through a valve, wherein the first fluid and the reference fluid mix to form a composite fluid, and detecting a property of the composite fluid at an isolation cell in fluid communication with the flow pipe.

In-situ calibration of tools

Disclosed are optical design techniques for generating environmentally resilient optical elements used in optical computing devices. One method for designing an integrated computational element (ICE) includes generating a plurality of theoretical ICE designs with a design suite stored on a non-transitory, computer-readable medium, each theoretical ICE design being configured to detect a characteristic of interest and comprising one or more layers, sorting the theoretical ICE designs based on performance criteria of each theoretical ICE design and thereby identifying one or more predictive ICE designs, calculating a theoretical effect of a temperature shift on each predictive ICE design, and selecting for fabrication one or more predictive ICE designs based on favorable temperature stability.

Optical design techniques for environmentally resilient optical computing devices

Methods and devices for optically determining a characteristic of a substance

Using an optical computing device includes optically interacting electromagnetic radiation with a sample and a first integrated computational element arranged within a primary channel, optically interacting the electromagnetic radiation with the sample and a second integrated computational element arranged within a reference channel, producing first and second modified electromagnetic radiations from the first and second integrated computational elements, respectively, receiving the first modified electromagnetic radiation with a first detector, and receiving the second modified electromagnetic radiation with a second detector, generating a first output signal with the first detector and a second output signal with the second detector, and computationally combining the first and second output signals with a signal processor to determine the characteristic of interest of the sample.

Disclosed are methods and techniques for providing favorable fabrication characteristics for optical elements. One method includes providing a desired integrated computational element (ICE) design comprising a plurality of layers, each layer having a design thickness, randomizing the design thickness of each layer of the desired ICE design to simulate a fabrication error in each layer, thereby generating a plurality of randomized ICE designs, calculating a standard error of calibration between each randomized ICE design and the desired ICE design, correlating the standard error of calibration between a given layer of the desired ICE design and the fabrication error of each corresponding layer of each randomized ICE design, and ranking the plurality of layers of the desired ICE design based on the sensitivity to changes in the standard error of calibration.

Optical design techniques for providing favorable fabrication characteristics

Optical computing devices are disclosed. One exemplary optical computing device includes an electromagnetic radiation source configured to optically interact with a sample and at least two integrated computational elements. The at least two integrated computational elements may be configured to produce optically interacted light, and at least one of the at least two integrated computational elements may be configured to be disassociated with a characteristic of the sample. The optical computing device further includes a first detector arranged to receive the optically interacted light from the at least two integrated computational elements and thereby generate a first signal corresponding to the characteristic of the sample.

An exemplary optical computing device includes an electromagnetic radiation source that optically interacts with a sample having a characteristic of interest, a first integrated computational element arranged within a primary channel to optically interact with the electromagnetic radiation source and produce a first modified electromagnetic radiation, wherein the first integrated computational element is configured to be positively or negatively correlated to the characteristic of interest, a second integrated computational element arranged within a reference channel to optically interact with the electromagnetic radiation source and produce a second modified electromagnetic radiation, wherein the second integrated computational element is configured to correlated to the characteristic of interest with an opposite sign relative to the first integrated computational element, and a first detector arranged to generate a first signal from the first modified electromagnetic radiation and a second signal from the second modified electromagnetic radiation.

Optical computing devices are disclosed. One exemplary optical computing device includes an electromagnetic radiation source configured to optically interact with a sample and first and second integrated computational elements arranged in primary and reference channels, respectively, the first and second computational elements are configured to be either positively or negatively correlated to the characteristic of the sample. The first and second integrated computational elements produce first and second modified electromagnetic radiations, and a detector is arranged to receive the first and second modified electromagnetic radiations and generate an output signal corresponding to the characteristic of the sample.

Optical computing devices are disclosed. One optical computing device includes an electromagnetic radiation source that emits electromagnetic radiation into an optical train to optically interact with a sample and at least one integrated computational element, the sample being configured to generate optically interacted radiation. A sampling window is arranged adjacent the sample and configured to allow transmission of the electromagnetic radiation therethrough and has one or more surfaces that generate one or more stray signals. A first focal lens is arranged to receive the optically interacted radiation and the one or more stray signals and generate a primary focal point from the optically interacted radiation. A structural element defines a spatial aperture aligned with the primary focal point such that the optically interacted radiation is able to pass therethrough while transmission of the one or more stray signals is substantially blocked by the structural element.

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Columbia, SC, United States of America

Michael Neil Simcock