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我国松辽盆地的万金塔CO2气田以产二氧化碳气为主,其次是甲烷。本文就该区的地质和地球化学特征与松辽盆地其它区域的油型气、煤成气及国内外典型的无机成因气进行对比,并结合实际资料,认为万金塔气藏中的二载化碳气主要是来自于地幔岩浆,然后通过大断裂储藏到万金塔气田储层中,因此属无机成因,地质储达到30×108m3。
The Wanjingta CO2 gas field in the Songliao Basin mainly produces carbon dioxide gas, followed by methane. In this paper, the geological and geochemical characteristics of the area are compared with the oil-gas, coal-formed gas and other typical inorganic gas sources both at home and abroad in Songliao Basin. According to the actual data, Carbonized gas is mainly derived from mantle magma and is then stored in large reservoirs into the Wanjunta gas field. Therefore, it is an inorganic genesis with a geological reserve of 30 × 108m3.