FRAW site index
Free Range Library index

Free Range Library

Anarchism & Action

Climate Change



Direct Action & Protest




Extreme Energy

Extr. Energy Climate

Extr. Energy Economics

Extr. Energy Nature

Extr. Energy Pollution

Extr. Energy Radiation

Food & Agriculture

FOSS & Linux


Land Rights

'Limits to Growth'




Peak Oil

Planning System







UK Government

UK Parliament



50 most recently added files index

Free Range Library indexes last updated 15:41, 28/06/2018

This form allows you to search the resource IDs and resource titles of the files in the Free Range Library. If a full match to a key cannot be found, a list of partial matches is returned.

library logo

The Free Range Virtual Library:

The Unconventional Hydrocarbon Resources Of Britain's Onshore Basins – Coalbed Methane (CBM)

Department for Energy and Climate Change, December 2012

Free Range Library News & Events

10/04/18: Library database engine updated.

28/08/17: Library database engine updated (FRAW Library should be listed on searches more easily now).

10/08/17: Further changes to the website architecture completed to allowed continued expansion of the library.

22/12/16: 14 papers have been added to the Extreme Energy, Climate Change and UK Government sections.

22/11/16: 60 papers have been added to the Extreme Energy section.

back to previous page

Resource information:
Resource IDdecccbm2012
Resource titleThe Unconventional Hydrocarbon Resources Of Britain's Onshore Basins – Coalbed Methane (CBM)
Publication/ sourceDepartment for Energy and Climate Change
Date publishedDecember 2012
Summary text/ abstracthis document will review previous studies, factors of importance in UK coalbed methane (CBM) exploration, the geology of key CBM regions, and their comparison to US productive basins and preliminary resource estimates. However, the document's content is limited by the lack of released well logs, core studies and test data, and the resource estimates are speculative, due to the early stage of UK CBM development. In CBM production, a well is drilled into the coal seam and water is pumped out to lower the pressure in the seam. This allows methane to desorb from the internal surfaces of the coal and diffuse into the cleat, where it is able to flow, either as free gas or dissolved in water, towards the production well. Permeability (imparted mainly by the cleat) is necessary to achieve CBM production. The natural permeability of coal seams can be low, so some CBM wells are stimulated (hydrofractured) to improve connectivity between the borehole and the cleat system. Wells may have many subsurface horizontal or multilateral sidetracks drilled from one surface location to penetrate more coal.
Library categoriesEnergy, Extreme Energy, Land Rights, Toxics, UK Government
Download file(s):

file iconThe Unconventional Hydrocarbon Resources Of Britain's Onshore Basins – Coalbed Methane (CBM) [3.6 megabytes]

back to previous page

[an error occurred while processing this directive]