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Showing result 1 - 5 of 6 essays matching the above criteria.

  1. 1. Inversion of SkyTEM Data Based on Geophysical Logging Results for Groundwater Exploration in Örebro, Sweden

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Andrée Kindlund; [2021]
    Keywords : SkyTEM; hydrogeophysics; geophysical logging; A priori; groundwater exploration;

    Abstract : Declining groundwater tables threatens several municipalities in Sweden which drinking water is collected from. To ensure a sound drinking water supply, the Geological Survey of Sweden has initiated a groundwater exploration plan. READ MORE

  3. 2. Downhole Physical Property Logging of the Blötberget Iron Deposit, Bergslagen, Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Philip Johansson; [2017]
    Keywords : Borehole logging; resistivity logging; magnetic susceptibility; magnetite; Bergslagen; Borrhålsloggning; geofysik; apatitjärnmalm; Bergslagen;

    Abstract : Geophysical methods are frequently applied in conjunction with exploration efforts to increase the understanding of the surveyed area. Their purpose is to determine the nature of the geophysical response of the subsurface, which can reveal the lithological and structural character. READ MORE

  4. 3. Water Well Investigations in the Nampula Province, Mozambique - A Minor Field Study

    University essay from Lunds universitet/Teknisk geologi; Lunds universitet/Ekosystemteknik (CI)

    Author : Elin Olsson; [2016]
    Keywords : Geophysical borehole logging; resistivity; natural gamma radiation; Nampula; Mozambique; Technology and Engineering;

    Abstract : Access to clean water for drinking and sanitation is a human right. Today water scarcity is a large problem and inequality in access to safe water is a striking truth. READ MORE

  5. 4. Formation evaluation of the Jurassic Stø and Nordmela formations in exploration well 7220/8-1, Barents Sea, Norway

    University essay from Lunds universitet/Geologiska institutionen

    Author : Johan Kristensson; [2016]
    Keywords : Middle Jurassic; Lower Jurassic; Nordmela Formation; Stø formation; Barents Sea; sand resistivity; formation evaluation; shale effect; petroleum exploration; 7220 8-1; Schlumberger Techlog; Earth and Environmental Sciences;

    Abstract : Evaluating reservoirs with alternating sequences of sand and shale meet the challenge of quantifying the effect from clay minerals. The clay minerals have an impact on logging tools and the resulting data. When not considering the effects, a formation evaluation will present incorrect results on e.g. READ MORE

  6. 5. Spectral time domain induced polarization : factors affecting spectral data information content and applicability to geological characterization

    University essay from Lunds universitet/Geologiska institutionen

    Author : Azadeh Rezvani; [2015]
    Keywords : Liikavaar; geology; geophysics; resistivity; induced polarization; Aititk mine; AarhusInv; Earth and Environmental Sciences;

    Abstract : The geo-electrical survey (resistivity and induced polarization) with different settings, arrangements, time base, spreads and waveforms (50% and 100% duty cycle waveform) was carried out over the Liikavaara depo-sit, near the Aitik mine, in northern Sweden and all the measured data was inverted in two different softwares: Res2Dinv and AarhusInv. Surveys of induced polarization (IP) often contain data of low quality, due to the high sensitivity against noise sources and coupling effects. READ MORE