Matches in SemOpenAlex for { <https://semopenalex.org/work/W2297072783> ?p ?o ?g. }
Showing items 1 to 64 of
64
with 100 items per page.
- W2297072783 endingPage "30" @default.
- W2297072783 startingPage "30" @default.
- W2297072783 abstract "The sub-surface of the Netherlands is generally underlain by coal-bearing Carboniferous strata at greater depths (at many places over 1,500 m). These coal seams are generally thinner than 3 meter, occur in groups (5--15) within several hundred meters and are often fairly continuous over many square kilometers. In many cases they have endured complex burial history, influencing their methane saturation. In certain particular geological settings, a high, maximum coalbed methane saturation, may be expected. Carboniferous/Permian coals in the Tianjin-region (China) show many similarities concerning geological settings, rank and composition. Economical coalbed methane production at greater depths is often obstructed by the (very) low permeabilities of the coal seams as with increasing depth the deformation of the coal reduces both its macro-porosity (the cleat system) and microporosity. Experiments in abandoned underground mines, as well as after underground coal gasification tests indicate ways to improve the prospects for coalbed methane production in originally tight coal reservoirs. High permeability areas can be created by the application of underground coal gasification of one of the coal seams of a multi-seam cycle with some 200 meter of coal bearing strata. The gasification of one of the coal seams transforms that seam over a certain areamore » into a highly permeable bed, consisting of coal residues, ash and (thermally altered) roof rubble. Additionally, roof collapse and subsidence will destabilize the overburden. In conjunction this will permit a better coalbed methane production from the remaining surrounding parts of the coal seams. Moreover, the effects of subsidence will influence the stress patterns around the gasified seam and this improves the permeability over certain distances in the coal seams above and below. In this paper the effects of the combined underground coal gasification and coalbed methane production technique are regarded for a single injection well. Known geotechnical aspects are combined with results from laboratory experiments on compaction of thermally treated rubble. An axi-symmetric numerical model is used to determine the effects induced by the gasified coal seam. The calculation includes the rubble formation, rubble compaction and induced stress effects in the overlying strata. Subsequently the stress effects are related to changes in coal permeability, based on experimental results of McKee et al.« less" @default.
- W2297072783 created "2016-06-24" @default.
- W2297072783 date "1999-01-01" @default.
- W2297072783 modified "2023-09-24" @default.
- W2297072783 title "99/00306 Coalbed methane production enhancement by underground coal gasification" @default.
- W2297072783 doi "https://doi.org/10.1016/s0140-6701(99)92579-1" @default.
- W2297072783 hasPublicationYear "1999" @default.
- W2297072783 type Work @default.
- W2297072783 sameAs 2297072783 @default.
- W2297072783 citedByCount "0" @default.
- W2297072783 crossrefType "journal-article" @default.
- W2297072783 hasConcept C108615695 @default.
- W2297072783 hasConcept C127313418 @default.
- W2297072783 hasConcept C127413603 @default.
- W2297072783 hasConcept C139719470 @default.
- W2297072783 hasConcept C162324750 @default.
- W2297072783 hasConcept C178790620 @default.
- W2297072783 hasConcept C185592680 @default.
- W2297072783 hasConcept C2776469828 @default.
- W2297072783 hasConcept C2778348673 @default.
- W2297072783 hasConcept C2778601115 @default.
- W2297072783 hasConcept C39432304 @default.
- W2297072783 hasConcept C516920438 @default.
- W2297072783 hasConcept C518851703 @default.
- W2297072783 hasConcept C548081761 @default.
- W2297072783 hasConcept C78762247 @default.
- W2297072783 hasConcept C86021790 @default.
- W2297072783 hasConceptScore W2297072783C108615695 @default.
- W2297072783 hasConceptScore W2297072783C127313418 @default.
- W2297072783 hasConceptScore W2297072783C127413603 @default.
- W2297072783 hasConceptScore W2297072783C139719470 @default.
- W2297072783 hasConceptScore W2297072783C162324750 @default.
- W2297072783 hasConceptScore W2297072783C178790620 @default.
- W2297072783 hasConceptScore W2297072783C185592680 @default.
- W2297072783 hasConceptScore W2297072783C2776469828 @default.
- W2297072783 hasConceptScore W2297072783C2778348673 @default.
- W2297072783 hasConceptScore W2297072783C2778601115 @default.
- W2297072783 hasConceptScore W2297072783C39432304 @default.
- W2297072783 hasConceptScore W2297072783C516920438 @default.
- W2297072783 hasConceptScore W2297072783C518851703 @default.
- W2297072783 hasConceptScore W2297072783C548081761 @default.
- W2297072783 hasConceptScore W2297072783C78762247 @default.
- W2297072783 hasConceptScore W2297072783C86021790 @default.
- W2297072783 hasIssue "1" @default.
- W2297072783 hasLocation W22970727831 @default.
- W2297072783 hasOpenAccess W2297072783 @default.
- W2297072783 hasPrimaryLocation W22970727831 @default.
- W2297072783 hasRelatedWork W2052050158 @default.
- W2297072783 hasRelatedWork W2069202898 @default.
- W2297072783 hasRelatedWork W2092796565 @default.
- W2297072783 hasRelatedWork W2157859915 @default.
- W2297072783 hasRelatedWork W2326947352 @default.
- W2297072783 hasRelatedWork W2371214112 @default.
- W2297072783 hasRelatedWork W2372725535 @default.
- W2297072783 hasRelatedWork W2381191783 @default.
- W2297072783 hasRelatedWork W3104680733 @default.
- W2297072783 hasRelatedWork W3166936593 @default.
- W2297072783 hasVolume "40" @default.
- W2297072783 isParatext "false" @default.
- W2297072783 isRetracted "false" @default.
- W2297072783 magId "2297072783" @default.
- W2297072783 workType "article" @default.