ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • Englisch  (3)
Sammlung
Sprache
  • Englisch  (3)
Erscheinungszeitraum
  • 1
    facet.materialart.
    Unbekannt
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Publikationsdatum: 2023-04-20
    Beschreibung: It is essential to comprehend how fluid concentration in rocks affects the hydrocarbon reserve and monitor fluid concentration for a sequestration or enhanced oil recovery programme. A prediction of saturation is highly uncertain due to the prior assumption that gas distribution is uniform or patchy in a rock physics theory. We therefore use the capillary pressure equilibrium theory (CPET) to develop a reservoir model that corresponds to the physics of capillary-induced fluid invasion and avoids the uncertainty associated with the type of gas distribution in pores. Assuming that the rock frame has not significantly changed throughout the field, we develop a CPET model utilising the reservoir parameters of the clean and unconsolidated sandstone formation of the Sleipner field, North Sea, which is the first industrial-scale CO〈sub〉2〈/sub〉-injection operation ever. The fluid content of the Sleipner field is then estimated by interpreting the time-lapse seismic inversion results using the model. According to our research, CO〈sub〉2〈/sub〉 is similar to a uniform distribution at higher concentrations, whereas it is mostly a somewhat patchy type at lower concentrations, or somewhere in between patchy and uniform distribution. Maximum CO〈sub〉2〈/sub〉 saturation is predicted using the CPET as 75% of the pore space. The topmost layer's CO〈sub〉2〈/sub〉-plume footprint is expanding from zero in 2001 to 7X105 sq. m. in 2010, according to a quantitative interpretation of six time-lapse seismic data sets from 1999 to 2010. Our model predicts that 50 years after the start of injection, CO〈sub〉2〈/sub〉 from all layers below will migrate to the top layer.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/conferenceObject
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Publikationsdatum: 2021-03-29
    Beschreibung: Molten I-type cosmic spherules formed by heating, oxidation and melting of extraterrestrial Fe,Ni metal alloys. The entire oxygen in these spherules sources from the atmosphere. Therefore, I-type cosmic spherules are suitable tracers for the isotopic composition of the upper atmosphere at altitudes between 80 and 115 km. Here we present data on I-type cosmic spherules collected in Antarctica. Their composition is compared with the composition of tropospheric O2. Our data suggest that the Earth's atmospheric O2 is isotopically homogenous up to the thermosphere. This makes fossil I-type micrometeorites ideal proxies for ancient atmospheric CO2 levels.
    Beschreibung: Open-Access-Publikationsfonds 2017
    Schlagwort(e): oxygen isotope; upper Earth’s atmosphere; cosmic spherules ; 551
    Sprache: Englisch , Englisch
    Materialart: article , publishedVersion
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Publikationsdatum: 2022-05-19
    Beschreibung: Fundamental questions remain about the origin of newly formed atmospheric aerosol particles because data from laboratory measurements have been insufficient to build global models. In contrast, gas-phase chemistry models have been based on laboratory kinetics measurements for decades. Here we build a global model of aerosol formation using extensive laboratory-measured nucleation rates involving sulfuric acid, ammonia, ions and organic compounds. The simulations and a comparison with atmospheric observations show that nearly all nucleation throughout the present-day atmosphere involves ammonia or biogenic organic compounds in addition to sulfuric acid. A significant fraction of nucleation involves ions, but the relatively weak dependence on ion concentrations indicates that for the processes studied variations in cosmic ray intensity do not significantly affect climate via nucleation in the present-day atmosphere. © 2016 American Association for the Advancement of Science.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/article
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...