塔里木盆地麥蓋提斜坡及周緣下古生界斷-蓋組合及其控油氣作用
[Abstract]:Megheti slope is an important oil and gas enrichment zone in Tarim Basin, and the petroleum geological conditions are superior. Based on the relationship between oil-gas transport faults and space-time matching of caprock and distribution of oil and gas, the type of fault-cap assemblage and the control effect on oil and gas accumulation and distribution in Meghetti slope and peripheral area are studied by means of superposition analysis. The results show that there are three main types of fault-cap assemblages in the slope and peripheral area of Maccati, that is, fault-slip type, break-fit type and non-penetration type. The fault-and-dislocation-type combination has large fault distance, salt layer is not staggered, oil and gas migration and accumulation characteristics are sustained upward, and the migration and accumulation efficiency is high, which is beneficial to the accumulation of oil and gas on salt. The break-through type has the characteristics of intermittent migration and accumulation of oil and gas, in which oil and gas may be enriched in salt, inter-salt and under-salt, and oil and gas in non-perforated fault-cap assemblage can not break through the upward migration of salt layer, which is beneficial to oil and gas accumulation under salt. Different fault-cap assemblages have important guiding significance to the selection of oil and gas exploration direction.
【作者單位】: 中國石油塔里木油田公司勘探開發(fā)研究院;浙江大學地球科學學院;
【基金】:國家重大科技專項“塔里木前陸盆地油氣富集規(guī)律、勘探技術與區(qū)帶和目標優(yōu)選”(2011ZX05003-004)資助
【分類號】:P618.13
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