Abstract: This specification relates to reducing CO2 levels of a gas operation network using a predictive model. The systems and methods described in this specification process an input data set that includes (i) gas flowrate data and (ii) CO2 concentration data. The systems and methods generate the predictive model by processing the input dataset. The systems and methods predict, by the predictive model, a CO2 production target for the gas operation network based on a gas flowrate predicted for each of the plurality of wells by the predictive model. The systems and methods generate control signals to control a respective valve at each well based on the CO2 production target and the predicted gas flowrate for each well. The systems and methods regulate CO2 levels of the gas operation network based on the CO2 production target by controlling the respective valves at each well.

Abstract: A system and methods for automated well annuli integrity alerts are provided. An exemplary method provides evaluating a wellhead tubing pressure, a plurality of annuli pressures, a choke valve value, and flowrate at a well surface of a well in real-time. An automated alert is generated in response to the wellhead tubing pressure, a plurality of annuli pressures, a choke valve value, and flowrate satisfying at least one condition. A user is advised of at least one well action to resolve the automated alert, wherein the advising is interactive messaging that provides well actions to resolve the automated alert.

Abstract: Computer-implemented systems and computer-implemented methods include the following. A choke/pressure control valve (PCV) gas rate is determined for each well of a group of producing wells. A downstream temperature (DST) gas rate is determined for each well of the group of producing wells. Parameters for a well rate test are determined for each well of the group of producing wells using the choke/PCV gas rate and the DST gas rate. A total gas rate for the producing wells is determined using the parameters. A gas production allocation factor (G-PAF) for the producing wells is determined. A production allocation for each well of the producing wells is determined using the total gas rate.

Abstract: Systems and methods for finding and solving problems with wet gas venturi meters in one or more gas well sites include one or more gas well sites configured to supply gas to a gas plant, each gas well site comprising a gas well connected to a piping, one or more valves installed on the piping, one or more pressure sensors, one or more temperature sensors, one or more venturi meters configured to measure a differential pressure of the gas in the piping, and one or more programmable logic controllers configured to receive the measured data from the pressure sensors, temperature sensors, and the venturi meters, receive a plurality of dimensions of the one or more venturi meters, receive a plurality of fluid properties values and, determine a first gas rate and first condensate rate for each of the well sites.

Abstract: Computer-implemented systems and computer-implemented methods include the following. A choke/pressure control valve (PCV) gas rate is determined for each well of a group of producing wells. A downstream temperature (DST) gas rate is determined for each well of the group of producing wells. Parameters for a well rate test are determined for each well of the group of producing wells using the choke/PCV gas rate and the DST gas rate. A total gas rate for the producing wells is determined using the parameters. A gas production allocation factor (G-PAF) for the producing wells is determined. A production allocation for each well of the producing wells is determined using the total gas rate.

Abstract: Systems and methods for finding and solving problems with wet gas venturi meters in one or more gas well sites include one or more gas well sites configured to supply gas to a gas plant, each gas well site comprising a gas well connected to a piping, one or more valves installed on the piping, one or more pressure sensors, one or more temperature sensors, one or more venturi meters configured to measure a differential pressure of the gas in the piping, and one or more programmable logic controllers configured to receive the measured data from the pressure sensors, temperature sensors, and the venturi meters, receive a plurality of dimensions of the one or more venturi meters, receive a plurality of fluid properties values and, determine a first gas rate and first condensate rate for each of the well sites.

Abstract: An upconversion nanoparticle (UCN) coated with a layer of semiconductor material is disclosed. The UCN core acts as a nanotransducer to convert near infrared (NIR) to visible and/or ultraviolet (UV) light while the semiconductor shell serves as a photocatalyst. Upon excitation by NIR light, the UCN upconverts NIR light to UV and/or visible light of different wavelengths. Spectral overlap between the emitted UV and absorption wavelength of the coated TiO2 activates the TiO2 layer to generate cytotoxic reactive oxygen species (ROS), which can be used in photodynamic therapy for the treatment of cancer cells. Stability and uptake of the nanoparticles can be increased by altering the coating of the nanoparticle, such as by a polymer and a dispersion stabilizer.

Abstract: The present disclosure provides upconversion fluorescent nanoparticles comprising: a first nanocrystal layer, a second nanocrystal layer, and an energy absorbing layer disposed between the first nanocrystal layer and the second nanocrystal layer. There is also provided an article of manufacture comprising the upconversion fluorescent nanoparticles, as well as a bio-imaging and/or bio-detection apparatus comprising the upconversion fluorescent nanoparticles. The bio-imaging and/or bio-detection apparatus may further comprise a biomolecule and a source of excitation.

Abstract: The invention relates to a coating composition comprising a polyurethane polyol composition comprising the reaction product of a polyisocyanate and a polyol, and modified nanoparticles of silica and/or alumina, and to a process for preparing such coating composition.

Abstract: The invention relates to a coating composition comprising a polyurethane polyol composition comprising the reaction product of a polyisocyanate and a polyol, and modified nanoparticles of silica and/or alumina, and to a process for preparing such coating composition.