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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 that are based on special logging tools. ...

    Artykuł - 23/10/2014 - 13:21

  2. Stimulation of oil and gas production

    ... Explosives were first used for enhancing oil flow to the borehole as early as in the 19th century. In 1865, E. A. L. Roberts used 8 ... resistance to the action of hydrocarbons and water in the borehole. Explosives were placed in rigid (sheet metal) or flexible (hemp ...

    Artykuł - 11/12/2014 - 19:38

  3. Hydraulic Fracturing Recipe

    ... contain gas in tiny isolated pores and release it to the borehole at very low flow rates. Nowadays, hydraulic fracturing technology is ... operations are performed in the following order: borehole cleanup, perforation, acidizing, hydraulic fracturing, ...

    Artykuł - 18/10/2014 - 19:17

  4. Exploration methods – seismic analysis

    ... the commencement of production: by comparing seismic and borehole data collected before the commencement of production with those ... Correlation of time-scale seismic data with depth-scale borehole data is the first step of the interpretation. This is done using a ...

    Artykuł - 23/10/2014 - 17:38

  5. Well stimulation procedures – hydraulic fracturing

    ... injection of fracturing fluid into a sealed section of the borehole with  perforated casing. The rock breaks and the fracture begins to ... the flow of gas can be stimulated by flushing the borehole with liquid nitrogen or carbon dioxide to enhance the flow of gas ...

    Artykuł - 16/10/2014 - 15:10

  6. Well abandonment

    ... involves wellhead removal on the surface and filling the borehole with cement plugs. The protected well is marked with information board ... profile, including such details as well construction, borehole diameter, casing shoe depth, etc. Project information sheet conform to ...

    Artykuł - 16/10/2014 - 15:59

  7. Petrophysical properties of shale rocks

    ... Permeability enables the flow of natural gas or oil into the borehole and their production. Permeability coefficient is dependent on: ... must be performed in order to connect the pores to the borehole and allow for an unrestrained flow of gas and reservoir fluids.   ...

    Artykuł - 21/10/2014 - 16:04

  8. Shale gas exploration/production and the groundwater

    ... Interconnected fractures form a path of gas migration to the borehole and then to the surface. Normally, the range of hydraulically induced fractures is approx. 100 m from the borehole. Fracturing (Fig. 4) involves sequential injections of a highly ...

    Artykuł - 16/10/2014 - 16:15

  9. Water management in shale gas exploration and production

    ... water requirements will be contingent on the type of mud and borehole length), hydraulic fracturing – fracturing fluid is based on the ...

    Artykuł - 16/10/2014 - 16:16

  10. Polish Geological Institute is to conduct an interdisciplinary research project on stimulation of shale gas production from Pomeranian formations

    ... shale geomechanics so as to stimulate the flow of gas to the borehole and minimize the horizontal drilling risks will be the key objective ...

    Aktualność - 16/03/2015 - 20:48