Der anlægges en boreplads og bores en frackingbrønd ned til laget med skifer og derefter bores der vandret ud i forskellige retninger.

 

 

 

 

Undersøgelsesfasen for ukonventionelle projekter (fracking efter skifergas) vil sandsynligvis bestå af boringer af et antal lodrette brønde med lille diameter på omkring 6 tommer, som vil blive boret og fraktureret for at afgøre, om der er skifergas og om det er egnet til indvinding. The exploration phase for unconventional developments is likely to see the drilling of a number of small diameter vertical wells, of around six inches in diameter will be drilled and fractured to determine if shale resources are present and are suitable for extraction.

 

Pinsent Masons fracking toolkit, uddrag: 2.
http://www.pinsentmasons.com/PDF/ShaleGasFrackingPart3.pdf
Undersøgelsesfasen, (Prøveboring) Under prøveboringsperioden vil virksomheden foretage seismiske undersøgelser, prøveboring og hydraulisk frakturering for at konstatere om der er skifergas. 2. Exploration The drilling of exploratory holes During the exploratory phase, the promoter and developer will carry out seismic surveys, exploratory drilling and hydraulic fracturing in order to ascertain whether shale hydrocarbons and reserves are present in the land. Whilst some of the initial seismic work may have deemed planning permission (i.e. when planning permission is not required as it is deemed to be granted under Part 22 of Schedule 2 to the Town and Country Planning (General Permitted Development) Order 1995) it is likely that the drilling of exploratory holes will require planning permission. The reason for this is two fold: firstly, it constitutes a change of use of the land which in many cases will be agricultural and secondly, the extent of drilling, both in terms of the number of holes and the length of time required for the drilling, is likely to be significant (certainly when compared to conventional hydrocarbons). Whether the exploration phase will require an Environmental Impact Assessment (EIA) will depend on whether the nature, size and location of the operations will have a likely significant effect on the environment. In the majority of cases an EIA will not be required, but the prudent approach would be to seek a screening opinion from the MPA as to whether or not an EIA should be carried out. However, there could be circumstances where it could be beneficial to carry out an EIA and these may not necessarily be due to the applicable tests for an EIA being met. For instance, carrying out an EIA could be one way of being seen to be “open” about the potential environmental impacts of a proposed project. An EIA would explain in more detail the proposed drilling operations and what is involved, and thus could assist in alleviating concerns that the local community may have about the processes involved. It is interesting to note that the planning applications submitted to MPAs to date have been accompanied by an EIA.

Læs mere her:
http://www.frackfreesomerset.org/what-is-fracking/

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