Abstract: Systems, devices, and techniques for allowing communication between two or more computing devices are described herein. For example, a method includes receiving, by a first computing device configured to operate in accordance with a first wireless protocol, one or more data packets via one or more signals output by a second computing device according to a second wireless protocol, where the first computing device is not configured to operate in accordance with the second wireless protocol. Additionally, or alternatively, a method includes receiving, by a first computing device configured to operate in accordance with a first wireless protocol, at least one signal including a data packet, wherein a payload of the data packet comprises an indication of a symbol defined in accordance with a second wireless protocol.

Abstract: Disclosed are methods and systems for determination of fluid contamination of a fluid sample from a downhole fluid sampling tool. A method may comprise obtaining a fluid sample, wherein the fluid sample comprises a reservoir fluid contaminated with a well fluid; obtaining input parameters, wherein the input parameters comprise fluid properties obtained from measurement of the fluid sample and mud filtrate composition; obtaining initial values of iterative parameters, wherein the iterative parameters comprise fluid contamination of the fluid sample; determining calculated fluid properties of the reservoir fluid using equation of state flash calculating; and repeating steps of determining component mole fractions and determining calculated fluid properties for use in the mole fraction distribution function until a comparison of one or more of the calculated fluid properties with one or more of the input parameters is within a tolerance error.

Abstract: A model structure modeling a power amplifier is based on at least a binomial expansion, a first building block, a second building block, and a third building block. The first building block is a first complex sub-band signal with a first delay, the second building block is a multiplication of the first complex sub-band signal with a second delay and a complex conjugate of the first complex sub-band signal with a third delay, and the third building block is a multiplication of a second complex sub-band signal with a fourth delay and a complex conjugate of the second complex sub-band signal with a fifth delay. The sum of the first complex sub-band signal and the second complex sub-band signal is a baseband signal. Terms are obtained by optimizing delay combinations for the model structure. The model structure is used to dual-band digital pre-distortion of the baseband signal.

Abstract: A 3D digital indoor localization system uses light emitting diode (LED) lighting infrastructures for localization. In one example approach, a light source includes a convex lens and an array of LEDs, all configured as a single LED lamp. The localization system exploits the light splitting properties of the convex lens to create a one-to-one mapping between a location and the set of orthogonal digital light signals received from particular LEDs of the LED lamp.

Abstract: A downhole formation fluid identification sensing module for measuring averaged gas molecular weight of wellbore formation fluid acquires simultaneous temperature, pressure, and density measurements. The sensing module includes two venturi-type gas sensors that both contain vibrating tubes. During operation, formation fluid flows through the vibrating tubes whereby resonant frequency measurements are acquired simultaneously with temperature and pressure measurements. Each measurement is then utilized to determine the gas molecular weight of the dry, wet or saturated formation fluid.

Abstract: The present disclosure relates generally to a system and method for increasing the reliability and data-rate transmission of information from a downhole device to the surface and from the surface to the downhole device. A fluid sampling system may comprise a downhole tool positionable in a wellbore and comprising a fluid testing chamber. The downhole tool may also comprise a light spectrum analysis unit disposed at a surface of the wellbore, wherein the light spectrum analysis unit comprises a detector. The downhole tool may further comprise a fiber optic cable for carrying light from the downhole tool to the light spectrum analysis unit, wherein the fiber optic cable is connected to the downhole tool and the light spectrum analysis unit.

Abstract: An LED package structure and a carrier thereof are provided. The LED package structure includes a carrier, a plurality of LED chips, and an encapsulating colloid. The carrier includes a substrate, a ring-shaped first wall disposed on the substrate, and a ring-shaped second wall stacked on the first wall. A portion of the substrate surrounded by the first wall is defined as a die-bonding region, and the first wall, the second wall, and the die-bonding region jointly define an accommodating space. The LED chips are mounted on the die-bonding region and are arranged in the accommodating space. The encapsulating colloid is filled within the accommodating space, and the LED chips are embedded in the encapsulating colloid.

Abstract: A method includes obtaining a plurality of master sensor responses with a master sensor in a set of training fluids and obtaining node sensor responses in the set of training fluids. A linear correlation between a compensated master data set and a node data set is then found for a set of training fluids and generating node sensor responses in a tool parameter space from the compensated master data set on a set of application fluids. A reverse transformation is obtained based on the node sensor responses in a complete set of calibration fluids. The reverse transformation converts each node sensor response from a tool parameter space to the synthetic parameter space and uses transformed data as inputs of various fluid predictive models to obtain fluid characteristics. The method includes modifying operation parameters of a drilling or a well testing and sampling system according to the fluid characteristics.

Abstract: In general, a system is described that includes two computing devices, a first which is configured to operate using a first wireless protocol and a second which is configured to operate using a second wireless protocol different than the first wireless protocol. The first computing device may determine a symbol to be sent to the second computing device. For each bit included in a payload of a data packet, the first computing device may set a value of the respective bit such that the symbol, when the data packet is translated into at least one signal using the first wireless protocol, is readable using the second wireless protocol. The first computing device generates the signal using the first wireless protocol, and outputs, via the first wireless protocol, the at least one signal. The second computing device may receive the at least one signal and demodulate the payload.

Abstract: Disclosed are methods and systems for determination of fluid contamination of a fluid sample from a downhole fluid sampling tool.

Abstract: Disclosed is the detection of emulsions and microdispersions with an optical computing device. One disclosed method includes emitting electromagnetic radiation from an electromagnetic radiation source, optically interacting the electromagnetic radiation with a fluid and thereby generating fluid interacted radiation, detecting a portion of the fluid interacted radiation with a reference detector arranged within an optical channel of an optical computing device, generating a reference signal with the reference detector, and determining an emulsive state of the fluid based on the reference signal.

Abstract: A carriage comprises a carriage body (1) consisting of a top frame, side walls, and a bottom frame. An end wall (2) is disposed on at least one end of the carriage body (1). Connectors (3) are symmetrically disposed on the left side and the right side of an outer wall body of the end wall (2). All the connectors (3) disposed on the end wall (2) of the carriage are connected by means of lines. The carriages can be grouped into each train in a meal ordering manner. When each carriage is added into a high-speed train set, the arrangement of the carriage is not limited, and accordingly, the carriage can be added into the train without limitation. On the premise the of ensuring the normal work of systems of the train, the work amount of staff members in a group can be reduced, and the work time of the staff members in the group is shortened.

Abstract: A method includes obtaining a plurality of master sensor responses with a master sensor in a set of training fluids and obtaining node sensor responses in the set of training fluids. A linear correlation between a compensated master data set and a node data set is then found for a set of training fluids and generating node sensor responses in a tool parameter space from the compensated master data set on a set of application fluids. A reverse transformation is obtained based on the node sensor responses in a complete set of calibration fluids. The reverse transformation converts each node sensor response from a tool parameter space to the synthetic parameter space, and uses transformed data as inputs of various fluid predictive models to obtain fluid characteristics. The method includes modifying operation parameters of a drilling or a well testing and sampling system according to the fluid characteristics.

Abstract: Disclosed are methods and systems for determination of fluid contamination of a fluid sample from a downhole fluid sampling tool. A method may comprise obtaining a fluid sample, obtaining input parameters, wherein the input parameters comprise fluid properties obtained from measurement of the fluid sample and mud filtrate composition, obtaining initial values of iterative parameters, determining component mole fractions of the reservoir fluid using the initial values of the iterative parameters in a mole fraction distribution function, determining calculated fluid properties of the reservoir fluid using equation of state flash calculating, and repeating steps of determining component mole fractions and determining calculated fluid properties and further obtaining updated values of the iterative parameters for use in the mole fraction distribution function until a comparison of one or more of the calculated fluid properties with one or more of the input parameters is within a tolerance error.

Abstract: Disclosed herein are methods and systems for fluid characterization of fluid samples from a downhole fluid sampling tool. A fluid characterization method may include obtaining a fluid sample of a reservoir fluid; analyzing the fluid sample to derive input parameters, wherein the input parameters comprise fluid properties obtained from measurement of the fluid sample; determining component mole fractions of the fluid sample using a mole fraction distribution function; and determining calculated fluid properties using equation of state flash calculating.

Abstract: A method of cross-tool optical fluid model validation includes selecting verified field data measured with a first sensor of an existing tool as validation fluids and selecting a second sensor for a new tool or on a different existing tool. The method may also include applying cross-tool optical data transformation to the validation fluids in a tool parameter space from the first sensor to the second sensor, and calculating the synthetic optical responses of the second sensor on the validation fluids through cross-space data transformation. The method may further include determining a new or adjusting an existing operational fluid model of the second sensor in a synthetic parameter space according to the candidate model performance evaluated on the validation fluids, and optimizing well testing and sampling operation based on real-time estimated formation fluid characteristics using the validated fluid models of the second sensor in an operating tool.

Abstract: A downhole formation fluid identification sensing module for measuring averaged gas molecular weight of wellbore formation fluid acquires simultaneous temperature, pressure, and density measurements. The sensing module includes two venturi-type gas sensors that both contain vibrating tubes. During operation, formation fluid flows through the vibrating tubes whereby resonant frequency measurements are acquired simultaneously with temperature and pressure measurements. Each measurement is then utilized to determine the gas molecular weight of the dry, wet or saturated formation fluid.

Abstract: A method of accessing a trusted platform module in a computing device is disclosed. The method includes storing a platform authorization key in a memory of the computing device that includes the trusted platform module. The platform authorization key includes permitting access to the trusted platform module. The method includes obtaining a digital signature in response to the computing device requesting access to the trusted platform module. The digital signature is generated using at least a command for configuring the trusted platform module. The method includes verifying the digital signature and allowing retrieval of the platform authorization key from the memory of the computing device in order to access the trusted platform module in response to the digital signature is verified, and denying retrieval of the platform authorization key otherwise.

Abstract: A 3D digital indoor localization system uses light emitting diode (LED) lighting infrastructures for localization. In one example approach, a light source includes a convex lens and an array of LEDs, all configured as a single LED lamp. The localization system exploits the light splitting properties of the convex lens to create a one-to-one mapping between a location and the set of orthogonal digital light signals received from particular LEDs of the LED lamp.

Abstract: Disclosed are methods and systems for determination of fluid contamination of a fluid sample from a downhole fluid sampling tool.