本文關(guān)鍵詞： 天然氣水合物 溫度監(jiān)測 地溫梯度 水合物穩(wěn)定帶 祁連山　出處：《現(xiàn)代地質(zhì)》2017年01期 　論文類型：期刊論文

【摘要】：祁連山凍土區(qū)木里盆地三露天井田自2008年首次鉆采到天然氣水合物實物樣品以來,實現(xiàn)了中低緯度高山凍土區(qū)天然氣水合物勘探的重大突破。天然氣水合物鉆孔DK-9于2013年發(fā)現(xiàn)水合物,通過對該孔長期地溫實時監(jiān)測,獲得了穩(wěn)態(tài)的地溫數(shù)據(jù)。結(jié)果表明,祁連山多年凍土區(qū)聚乎更礦區(qū)三露天井田凍土層底界為約163 m,凍土層的厚度達約160 m,凍土層內(nèi)的地溫梯度為1.38℃/100 m,凍土層以下的地溫梯度達4.85℃/100 m。根據(jù)天然氣水合物形成的溫-壓條件分析,聚乎更礦區(qū)具備較好的天然氣水合物形成條件,天然氣水合物穩(wěn)定帶底界深度處于510~617 m之間。
[Abstract]:Since 2008, when the physical samples of natural gas hydrate were first drilled out in the third open-pit mine field of the Muli Basin in the frozen soil region of Qilian Mountains, The gas hydrate was discovered by DK-9 in 2013, and the steady-state geotemperature data were obtained by real-time monitoring of the long-term ground temperature of the borehole. In the permafrost region of Qilian Mountain, the bottom boundary of permafrost is about 163 m, the thickness of permafrost is about 160 m, the geothermal gradient in permafrost is 1.38 鈩，

本文編號：1513584