第二深度空间(5000~10000 m)油、气形成与聚集的深层物理与动力学响应

在当今全球各国对油、气能源的需求和我国在工业化进程中油气能源十分紧缺的前提下，共享世界油、气能源的同时，必须立足于本土，迅速建立起安全、稳定，且可保证持续供给的油、气能源战略后备基地.油、气田勘探和开采中，尚存在着大于或远大于通常所规范的油、气生成稳定温度和深度限定，而向深部勘察油、气的理念又受到传统油、气成因理论的严峻挑战.为此，近些年来，通过对沉积建造、结晶基底，深部油气生成的物理（主指温度、压力）条件、物源和聚集储存空间的研究，提出：①沉积盆地中存在双相（陆相+海相）沉积建造，而基底则分为中、新生代沉积基底和古老的变质岩结晶基底，即双层基底；②地壳深部介质的物理－化学属性和变质岩及存储空间为油、气的生成和聚集提供了物质基础；③厘定了在有机成因主导下，油、气混合成因（有机+无机）的新理念；④第二深度空间（5000~10000 m）的油、气探查和开发将必是未来深部发现大型和超大型油、气田和深化研究的必然轨迹.

Deep physical and dynamical process for the formation and accumulation of oil and gas resources in the second deep space (5000~10000 m)

Along with the development of China's economy and the industrialization process of all countries in the world, the demand for oil and gas is growing quickly. In light of growing requirements for oil and gas resources abroad and the fact that China's internal supply is not enough or even deficient at the present time, we suggest that we must use the resources through different ways; at the same time, determine to have a foothold in national resources and to build up the strategic reserve base of gas and oil resources for safety which can ensure reliable and stable supply. At present, during the processes of the exploration and exploitation of oil-and gas-fields, there still exist large quantity of the oil and gas, which are buried more than or much greater than that defined by the depth lines and stable temperature. Furthermore, the extensive discovered deep hydrocarbon reservoirs have raised strong challenges to traditional oil and gas generating theory. Based on studies of sedimentary construction, crystalline basement, deep medium and physical environments (mainly referring to temperature and pressure) for formation and accumulation of hydrocarbon resources, the following four problems are discussed:①There exist marine sediments beneath the continental sediments widely, i.e., dual-phase sedimentary basins(continental phase and marine phase), and the basement is not only the bottom of Mesozoic and Cenozoic basement, but also the old metamorphic rocks basement; ②The physical and chemical properties, material sources, and reservoir space of the medium in the deep crust supply the material for the formation and accumulation of oil and gas resources; ③We put forward the new notion of mixing origin of oil and gas(organic and inorganic origins), dominated by organic origins; ④Oil and gas exploration and exploitation in the second deep space(5000~10000 m) should be the inevitable trajectory for the further studies and development of the deep potential large-super large hydrocarbon reservoirs.