中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
12期
28-32
,共5页
吴明俊%许霞%曹学明%王德祖
吳明俊%許霞%曹學明%王德祖
오명준%허하%조학명%왕덕조
煤层气%储层特征%远景区%陇东地区
煤層氣%儲層特徵%遠景區%隴東地區
매층기%저층특정%원경구%롱동지구
CBM%reservoir characteristics%prospect%Longdong area
陇东地区位于鄂尔多斯盆地西南缘,地质勘查程度高,煤炭资源丰富。据近年来煤炭地质勘查及煤层气参数孔等资料,对主要可采煤层煤8储层从含气性、储层压力、渗透性及等温吸附解吸/吸附特征等方面进行了综合分析,认为煤储层裂隙较发育,总体渗透率为中等,属常压、欠饱和储层,煤层含气量最高可达11.51m3/t,虽然整体含气量偏低,但存在煤层气局部富集的现象,据此提出和盛-荔堡、付家山等5个远景区。
隴東地區位于鄂爾多斯盆地西南緣,地質勘查程度高,煤炭資源豐富。據近年來煤炭地質勘查及煤層氣參數孔等資料,對主要可採煤層煤8儲層從含氣性、儲層壓力、滲透性及等溫吸附解吸/吸附特徵等方麵進行瞭綜閤分析,認為煤儲層裂隙較髮育,總體滲透率為中等,屬常壓、欠飽和儲層,煤層含氣量最高可達11.51m3/t,雖然整體含氣量偏低,但存在煤層氣跼部富集的現象,據此提齣和盛-荔堡、付傢山等5箇遠景區。
롱동지구위우악이다사분지서남연,지질감사정도고,매탄자원봉부。거근년래매탄지질감사급매층기삼수공등자료,대주요가채매층매8저층종함기성、저층압력、삼투성급등온흡부해흡/흡부특정등방면진행료종합분석,인위매저층렬극교발육,총체삼투솔위중등,속상압、흠포화저층,매층함기량최고가체11.51m3/t,수연정체함기량편저,단존재매층기국부부집적현상,거차제출화성-려보、부가산등5개원경구。
The Longdong area is situated at the southwest margin of the Ordos Basin with high degree of exploration and abundant coal resources. Based on coal geological exploration and CBM parameter well data in recent years have analyzed coal No. 8 reservoir meth?ane content, reservoir pressure, permeability and isothermal adsorption/desorption/adsorptive characteristics comprehensively, consid?ered that fissures are well developed in coal reservoir, medium permeability as a whole, belongs to normal pressure, undersaturation res?ervoir, the CBM content can be 11.51m3/t as high, although the overall methane content on the low side, but enriched locally, in view of the above, 5 prospects of Hesheng-Libu, Fujiashan etc. put forward.