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  1. Exploration methods – geophysical well logging

    Geohysical well logging Geophysical well logging (borehole logging,) is a set of borehole investigation methods ... exerts a pressure that is several hundred MPa high at the bottom of the well. Delicate and sensitive detectors or other instruments ...

    Artykuł - 23/10/2014 - 13:21

  2. Stimulation of oil and gas production

    Well stimulation is commonly applied to boost oil or gas production and, ... and any potential drops are offset by additional wells, well productivity decreases in the third stage and cannot be offset by drilling ... to enable deeper penetration of the fluid. Well bottom cleanup from any loose material and injection of working fluid (e.g. ...

    Artykuł - 11/12/2014 - 19:38

  3. Organic matter content in shales

    ... delta systems. Once organic matter settles at the sea bottom, it enters the benthic food chain as its main component. Organic matter ... from the decomposition of organic and mineral matter, as well as of non-pyrolisable organic matter. The results are expressed as ...

    Artykuł - 11/12/2014 - 19:22

  4. Shale gas exploration/production and the groundwater

    ... production of unconventional hydrocarbons (shale gas), as well as existing available and commonly applied technologies, potential risks ... and gelling agents to prevent proppant buildup at the well bottom. Potential groundwater contamination risks from reservoir ...

    Artykuł - 16/10/2014 - 16:15

  5. Shale formation environment

    ... drilling wells and other investigations ( geophysical well logging, seismic surveys ) enable the interpretation of both horizontal ... column or the action of currents (particle rolling along the bottom). Considering shale gas and oil exploration aspects, it is important for ...

    Artykuł - 21/10/2014 - 10:10

  6. Potential environmental impacts at each stage of works

    ... project stages are: drilling preliminaries, well drilling, reservoir stimulation (hydraulic fracturing), production ... of the fluid and prevent proppant buildups at the well bottom and borehole clogging. As the fracturing procedure is over, a part of ...

    Artykuł - 16/10/2014 - 16:50

  7. First oil from the offshore Baltic B8 field to be produced this year

    ... of the Baltic coast opposite of Hel, 2.1 km below the sea bottom in Middle Cambrian sandstones. The first B8-1 well was drilled in 1983 there. The B8 development programme envisages ...

    Aktualność - 09/06/2015 - 12:02

  8. Investigation of organic matter in shales

    ... time and space of hydrocarbon generation and expulsion, as well as of the volume and type of generated hydrocarbons. Investigation of oxygen conditions prevailing at the sea bottom during deposition is the key objective of studies on the origin of shale ...

    Artykuł - 11/12/2014 - 19:21

  9. Natural gas in general and shale gas in particular

    ... an admixture of organic matter were deposited at the sea bottom. With time the sediments, covered by successive layers and progressively ... to estimate gas resources in Poland and across the world as well as specify areas with high probability of shale gas occurrence (read more ...

    Artykuł - 20/10/2014 - 15:23

  10. [3] Migration or the origin of conventional reservoirs

    ... below the oil reservoir and closes the trap at the bottom. Trapped oil is waiting for a chance to find a way out. A well drilled to the trap becomes its route of escape. Crude oil flows into the ...

    Artykuł - 23/09/2014 - 22:31

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