... time system presented wavelength emat real-time well performance measurement coil viscosity frequency thickness (2) Q G = ( P D U T + 1 ) ( 273.15 T D U T + 273.15 ) Q G N with the pressure reading P DUT in barg...

... signal absorption reservoir characterization photoacoustic nanoparticle illumination nanodroplet chemical tracer wavelength nanotracer application upstream oil & gas nanoagent operation gold nanoparticle contrast agent nanoparticle thermoelastic expansion Introduction Tracer...

... Upstream Oil & Gas multicolor fluorescent silica nanoparticle ethanol emission spectrum spectrum tracer test analysis concentration acceptor application molecule µmols mineral oil silica nanoparticle FRETsilica silica intensity wavelength chemical tracer energy transfer...

... & Gas concentration Drillstem Testing wavelength composition fluid sample well logging drillstem/well testing variation real time system DFA sensor spectroscopy optical spectroscopy filtrate absorption resistivity reservoir fluid fluid property PVT measurement optical density...

... tester composition real time absorption water property resistivity intensity filtrate contamination water sample representative formation water sample contamination drilling fluid property wavelength flow line filtrate sensor formation water oilfield chemistry remediation of hydrates...

... a new possibility for long range high resolution saturation mapping using EM means. Reservoir Characterization frequency enhanced recovery cutoff frequency Upstream Oil & Gas waterflooding attenuation wavelength high resolution saturation mapping Saturation Mapping society...

...Introduction Discrete Distributed Temperature Sensing (DDTS) is a novel method of performing distributed temperature sensing while supporting long step out distances and fast update rates. The system consists of a fiber optic interrogator, capable of measuring numerous in-line and wavelength...

... by a few material characteristics of the silica structure. At lower wavelengths, ultraviolet (UV) absorption, and Rayleigh scattering cause an increase in the attenuation curve; but, at higher wavelengths, infrared (IR) absorption causes a sharp increase to the attenuation curve ( Fig. 2 ). Waveguide...

...) x ( λ ) = α ( λ ) ⋅ ρ ⋅ l , where α is the absorption coefficient, ρ is the concentration of the solvent, and l is the optical pathlength. In Eq. A-4 , λ denotes the wavelength of the electro-magnetic wave, in particular the wavelength of the UV-visible-NIR light...

... technical conference well logging wavelength azimuthal resolution log analysis compressional wave detection real time system frequency yellow formation spe 146732 resistivity society of petroleum engineers investigation reservoir sonic measurement wellbore sonic tool unconventional...

... that the technique might not be reliable in case of a compositional gradient and or compartmentalized reservoirs. wavelength log analysis formation tester well logging OBMF Upstream Oil & Gas oil zone GOR sensor reservoir viscosity filtrate spe 115822 NMR measurement live oil density...

... at the well site for actual decisions on whether to sample or not. Optical Density Measurements Hydrocarbon Response An important feature of the absorption spectra is the presence of color that predominates in the shorter wavelengths as seen in Fig. 2 . The color of hydrocarbons is the result...

... result of the hydrogen attack is the increase of optical attenuation of the fiber, both absolute and relative in relation to other wavelengths. The attenuation increase leads to less signal being available, resulting in lower signal-to-noise ratio. The variation in losses across the optical spectrum can...

... experience increased noise in the temperature trace and therefore require increased measurement time. This paper reviews the latest advance in Active Plug & Play DTS technology, where the use of dual wavelength, single ended DTS systems eliminates many of these installation-related issues, by providing...

... in the fiber and a small fraction of the photons making up the pulse are scattered. Some of the scattered photons are recaptured by the fiber and return back toward the surface. The majority of these "backscattered" photons is at the same wavelength as the laser pulse and is called "Rayleigh" backscatter...

... precipitation detection application Upstream Oil & Gas wavelength EOR process bypassed zone detection tool radiation Raman Spectroscopy spectrograph Detection Tool reservoir asphaltene spectroscopy bypassed oil detection society of petroleum engineers Introduction An operator cares...

... with the material of the fiber, scattering light at different wavelengths from the original wavelength. The relative intensity of the scattered signals contains the information on the temperature of the section of optical fiber where the scattering is occurring. The distance or depth information is given by time...

... needed to determine the confidence levels of their temperature log interpretations. production control production logging attenuation Completion Monitoring Systems/Intelligent Wells Reservoir Surveillance temperature resolution downhole sensor Upstream Oil & Gas wavelength variation...

... work that has been performed to-date. Our article also includes an overview of field test results and illustrates how real-time deformation monitoring could form a significant component of reservoir surveillance strategies. production monitoring wavelength shift production control Upstream Oil...

.... Our proposed approach requires transient measurements from (N - 1) laser beams of different wavelengths. The beam deflection technique shows promise of being faster and more accurate than the current techniques to determine molecular diffusion coefficients. Firoozabadi exit window diffusion...