新疆塔东地区含油气系统建设与改造

塔东地区发育古生界碳酸盐岩和中生界河湖相沉积2套生油层系，形成下古生界和中新生界2套不同的含油气系统。在多期构造运动改造过程中，含油气系统经历了建设、改造、复合叠加的演化过程，现今古生界以改造后的残留气藏为主，中生界以复合混源型油气藏为主。下一步油气勘探应围绕古生界烃源岩在综合分析油气成藏条件的基础上，采用现代勘探技术落实有效圈闭，进行立体勘探。

FORMATION AND RECONSTRUCTION OF PETROLEUM SYSTEM IN EASTERN TARIM BASIN, XINJIANG

Two oil generative assemblages including Paleozoic carbonate and Meso-Cenozoic fluvial-lacustrine deposits are developed in the eastern Tarim, leading to the formation of the Paleozoic and Mesozoic-Cenozoic petroleum systems. The petroleum systems have experienced an evolutionary process of formation, reconstruction and superimposition during the multiphase tectonic movements. The current Paleozoic is dominated by relic gas reservoirs survived reconstruction, while the Mesozoic is dominated by oil and gas reservoirs with composite mixed source rock types. Future exploratory study should be focused on the Paleozoic source rocks, the modern exploration technologies should be used to identify effective traps on the basis of comprehensive analysis of hydrocarbon reservoiring conditions, and all the available exploration methodologies should be integrated to effectively search for oil and gas.