Abstract: A system for reducing far-field noise produced by well operations includes a passive sound barrier shielding an area, in which the well operations are performed, in an open-air environment. The system further includes a sound sensor to receive near-field noise from the well operations. The system further includes an analysis module, coupled to the sound sensor, to generate an anti-noise signal. The system further includes active anti-noise generators, coupled to the analysis module, to generate anti-noise, based on the anti-noise signal, that destructively interferes with noise from the well operations outside of the passive sound barrier at a predetermined distance from the passive sound barrier. The analysis module generates the anti-noise signal based on the near-field noise, the predetermined distance, and adjustable positions and orientations of the active anti-noise generators.

Abstract: A method for noise attenuation includes comparing a frequency of noise generated by a plurality of noise sources with a plurality of frequencies associated with a pre-determined noise spectrum and stored in a computer system, identifying one or more noise sources that generate the noise based on the comparison of the frequency of the noise and the plurality of frequencies stored in the computer system; generating anti-noise corresponding to the noise; and outputting the anti-noise using one or more noise mitigation devices associated with the one or more noise sources.

Abstract: A method for noise attenuation includes comparing a frequency of noise generated by a plurality of noise sources with a plurality of frequencies associated with a pre-determined noise spectrum and stored in a computer system, identifying one or more noise sources that generate the noise based on the comparison of the frequency of the noise and the plurality of frequencies stored in the computer system; generating anti-noise corresponding to the noise; and outputting the anti-noise using one or more noise mitigation devices associated with the one or more noise sources.

Abstract: A method for optimizing oilfield operations, in some embodiments, comprises: identifying a first oilfield model; determining n solutions to the first oilfield model that optimize a target parameter of the first oilfield model; identifying a second oilfield model; identifying a set of parameter values used in then solutions; selecting from said set a value that optimizes a different target parameter in the second oilfield model; determining an optimal solution to the first oilfield model using the selected value as a constant in said first oilfield model; and adjusting oilfield equipment using one or more of said optimizations.

Abstract: The presnt disclosure relates to passively rotating a valve using fluid flow. Some aspects may involve a valve including a body, a lower stem, and vanes. The body may include a bottom portion that can be positioned with respect to a seat for preventing fluid flow when the valve is in a closed position. The lower stem may extend axially from the bottom portion of the body to position the bottom portion with respect to the seat. The vanes may extend from the body and be responsive to the fluid flow while the valve is in an open position such that the valve and the lower stem rotate with respect to the seat.