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  1. Petrophysical properties of shale rocks

    ... important aspect. An illustrative petrophysical model of an organic matter-rich shale rock is presented below. Porosity of ... – calculated as the volume of interconnected (permeable) pores divided by bulk volume of the rock. Shale rock is built of micro- ...

    Artykuł - 10/21/2014 - 16:04

  2. Water content in shale rocks

    ... volume of free gas and adsorbed gas. Water contained in the pores should be considered, too. In shale rocks that are rich in organic matter, the water occurs solely in inorganic pores. Gas contained ...

    Artykuł - 12/11/2014 - 19:19

  3. Stimulation of oil and gas production

    ... Paraffin wax, asphalt, etc. deposits in the formation pores often impede the flow of crude oil to the borehole. The heat from torpedo ... acid at concentrations of 7-15% and hydrofluoric acid; organic acids include acetic and formic acids. The former are more corrosive ...

    Artykuł - 12/11/2014 - 19:38

  4. Natural gas in general and shale gas in particular

    ... ago). Argillaceous-mudstone sediments with an admixture of organic matter were deposited at the sea bottom. With time the sediments, ... details of mineral composition and of the voids – pores in the shale rock are essential for an in-depth estimation of the ...

    Artykuł - 10/20/2014 - 15:23

  5. Exploration methods – geophysical well logging

    ... are determinable by geophysical well logging include: organic matter content estimated from total organic carbon (TOC); mineral ... provides information on rock porosity and on the size of the pores in which water or hydrocarbons are present (the sources of hydrogen in ...

    Artykuł - 10/23/2014 - 13:21

  6. Well stimulation procedures – hydraulic fracturing

    ... fracturing Natural gas is stored under pressure in pores and open fractures of the shale rock (free gas), is dissolved in brine or adsorbed at the surfaces of organic fragments and mineral particles (associated gas). Hydraulic ...

    Artykuł - 10/16/2014 - 15:10