【摘要】 地幔和地核中有大量的碳和氢,学者们提出了不同地质背景下无机成因烃类来源理论,其中影响较大的有Gold氏的地幔脱气理论和费 托地质合成理论。大量的事实证明了无机成因油气的存在。对各类天然气成因来源的判别多采用碳同位素和稀有气体同位素;而对无机成因油多从铅、锶、钕同位素和重金属元素、亲石元素、正烷烃结构等旁证了原油地球深部来源的可能性。在板块运动产生的综合动力场作用下,以CO2和H2O为主要成分的流体在深部油气的无机合成、运移和富集中起着重要的作用。无机成因油气的研究和开发利用,有助于缓解我国油气产储的矛盾。更多还原

【Abstract】 A large amount of C and H lie in the mantle and the earth’s core. Different theories about the source for inorganic oilgas are put forward under the different geologic backgrounds. The theory of Gold’s mantle degassing and FisherTropsch geologic synthesis have more great influence among these theories. The large numbers of facts proved the existance of inorganic sourced oilgas. The distinguishable mark of natural gas from different sources are C isotope and noble gas isotope. For inorganic oil, mostly applying Pb, Sr, Nd isotopes and heavy-metal elements, lithophile elements and the structure of normal paraffin indirectly prove the possible existence of deep source of crude oil. Under the effect produced by the plate motion etc., fluid, mostly composed of CO2 and H2O, act as important role in the oilgas origin, migration and enrichment. The research and development of inorganic oilgas aid to regulate the relationship of need and supply.更多还原