从岩相古地理论塔里木盆地西南地区石炭系油气潜景
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摘要
石岩系是塔里木盆地西南地区重要的海相烃源岩和储集岩地层 ,油气潜力很大 ,但目前仅发现了 1个气田、1个油田和 2个油藏 ,勘探程度很低。本文在岩相古地理和地震地层学岩性岩相研究的基础上 ,对本区石炭系的烃源岩和储集岩的类型、分布及其与沉积环境的关系进行了研究 ,对盖层性质和分布 ,尤其对石炭系经过多次大的构造变动后所形成的油气潜景区进行了较深入的探讨 ,并指出 4个有利的油气勘探地区 ,即巴楚隆起西端、玛扎塔克断裂带—海米 罗斯断裂带、麦盖提斜坡的北缘、南缘推覆体上盘。同时指出了各有利地区的勘探对策。
Carboniferous strata are important marine source rocks and reservoir rocks in the southwestern Tarim basin. Oil and gas potential there is very rich. Nevertheless, due to insufficient exploration work, only one gas field, one oil field and two oil pools have been found. On the basis of researches of lithofacies-paleogeography and seismic stratigraphy, the authors made detailed investigation into the types and distribution of Carboniferous source rocks and reservoir rocks in relation to their sedimentary environments, the nature and distribution of regional and local capping beds, and especially the potential oil and gas area formed as a result of many times of important tectonic movements. Four most favorable areas for oil and gas exploration were delineated, i.e., the western end of Bachu uplift, Mazatake-Haimiluosi faulted zone, the northern edge of Meigeqi slope, the overthrust plate of the southern edge.
Carboniferous strata are important marine source rocks and reservoir rocks in the southwestern Tarim basin. Oil and gas potential there is very rich. Nevertheless, due to insufficient exploration work, only one gas field, one oil field and two oil pools have been found. On the basis of researches of lithofacies-paleogeography and seismic stratigraphy, the authors made detailed investigation into the types and distribution of Carboniferous source rocks and reservoir rocks in relation to their sedimentary environments, the nature and distribution of regional and local capping beds, and especially the potential oil and gas area formed as a result of many times of important tectonic movements. Four most favorable areas for oil and gas exploration were delineated, i.e., the western end of Bachu uplift, Mazatake-Haimiluosi faulted zone, the northern edge of Meigeqi slope, the overthrust plate of the southern edge.
引文
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袁旭音 ,周华平 .1999.新疆北阿尔泰石炭纪的沉积相和沉积环境 .地球学报 .2 0 (增刊 ) :14 4～ 14 7.
冯增昭 .1989.碳酸盐岩岩相古地理 ,北京 :石油工业出版社 .
冯增昭 .1992 .单因素分析综合作图法———岩相古地理学方法论 .沉积学报 ,10 (3 ) :70～ 77.
何登发 ,吕修祥 ,董大忠 ,林永汉等著 .1994.前陆盆地分析 .北京 :石油工业出版社 ,3 69～ 3 84.
贾承造等著 .1990 .塔里木盆地板块构造演化和主要构造单元地质构造特征 .北京 :石油工业出版社 .
林少华 ,庞雄奇 ,周海燕 .1999.深盆油藏与深盆气藏成藏对比及主控因素分析 .地球学报 ,2 0 (增刊 ) :5 5 2～ 5 60 .
牟中海编著 .1994.地震地层学解释方法及应用 .成都 :电子科技大学出版社 .
袁旭音 ,周华平 .1999.新疆北阿尔泰石炭纪的沉积相和沉积环境 .地球学报 .2 0 (增刊 ) :14 4～ 14 7.
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