酒泉侏罗纪含煤盆地性质、原型及资源潜力
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摘要
根据二维地震剖面的分析得出,酒泉侏罗纪盆地属于伸展盆地,而非前陆盆地,主要是由一系列的断陷组成,主体东断西超,由一系列北东或北北东向的正断层形成.盆地的北部边界与现今边界大致一致,位于北山南面的山前地带,南部边界的主体位于北祁连山下,距离现今边界以南25～30km处,部分地段位于现今边界以北15～20km处.各断陷中沉积了厚300～1800m的含煤沼泽相侏罗系沉积,煤层厚度大、分布广.煤及泥岩是良好的生油岩,砂、砾岩是良好的储油层,因此煤与油气资源都很丰富.
The structure interpretation on two-dimension seismic profiles indicated that the Jurassic Jiuquan basin belongs to the stretch basin and is composed of many dustpan-like fault sags, which are formed by lots of normal faults tending towards a NE or NNE direction. The fault sags which has a Jurassic coal-bearing deposits of 300～(1 800 m) in thickness which belongs to a swamp facie, are mainly distributed in the two regions of Jiuxi and Jiudong. Furthermore, the Jurassic basin has a similar north margin but a different south margin compared with the present basin. Its north margin locates in the front of the Beishan mountain, and its south margin lies under the northern Qilianshan mountains at a distance to the south of 25～30 km from the present margin in the most places, but in the Maying region of eastern basin it lies in the front of the northern Qilianshan mountain at a distance of 15～20 km from the present margin. Finally, the coal and oil resources in Jiuquan basin are also very plentiful, because the coal and mudstone are the good oil source rocks and the sandstone and conglomerate are the ideal reservoirs.
The structure interpretation on two-dimension seismic profiles indicated that the Jurassic Jiuquan basin belongs to the stretch basin and is composed of many dustpan-like fault sags, which are formed by lots of normal faults tending towards a NE or NNE direction. The fault sags which has a Jurassic coal-bearing deposits of 300～(1 800 m) in thickness which belongs to a swamp facie, are mainly distributed in the two regions of Jiuxi and Jiudong. Furthermore, the Jurassic basin has a similar north margin but a different south margin compared with the present basin. Its north margin locates in the front of the Beishan mountain, and its south margin lies under the northern Qilianshan mountains at a distance to the south of 25～30 km from the present margin in the most places, but in the Maying region of eastern basin it lies in the front of the northern Qilianshan mountain at a distance of 15～20 km from the present margin. Finally, the coal and oil resources in Jiuquan basin are also very plentiful, because the coal and mudstone are the good oil source rocks and the sandstone and conglomerate are the ideal reservoirs.
引文
杨树锋 ,陈汉林 ,肖安成 ,等 酒泉盆地构造特征及控油作用 玉门油田研究院 , 2 0 0 2 . 1 8
陈建军 ,范铭涛 ,韩永科 ,等 河西走廊地区诸盆地石油地质综合评价及目标选择 玉门油田研究院 , 1 999. 1 7
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陈建军 ,范铭涛 ,韩永科 ,等 河西走廊地区诸盆地石油地质综合评价及目标选择 玉门油田研究院 , 1 999. 1 7
[1] 任战利,张小会,刘池洋,等.花海-金塔盆地生油岩古温度的确定指出了油气勘探的方向[J].科学通报,1995,40(10):921～923.
[2] 陈建平,陈建军,张立平,等.酒西盆地油气形成与勘探方向新认识(二)———烃源岩成烃演化与主力油源确认[J].石油勘探与开发,2001,28(2):15～18.
[3] 袁选俊,王智治.酒东盆地营尔凹陷沉积特征与储层评价[A].沉积学及岩相古地理学新进展[C].北京:石油工业出版社,1995.534～537.
[4] 马国福,魏 军,汪满福.酒西盆地青西地区油气藏裂缝研究[J].新疆石油地质,2002,23(1):44～45.
[5] 顿铁军.酒西盆地鸭儿峡地区变质岩储层研究[J].西北地质,1995,16(2):50～57.
[6] 王志欣,张一伟.酒西盆地单北油田油藏类型分析[J].石油学报,2000,21(3):32～35.
[7] 陈建平,黄第藩,张大江,等.酒东盆地油气生成和运移[M].北京:石油工业出版社,1996.245～270.
[8] 陈建平,陈建军,张立平,等.酒西盆地油气形成与勘探方向新认识(三)———油气运移、成藏规律与勘探方向[J].石油勘探与开发,2001,28(3):12～16.
[9] 霍永录,谭试典.酒泉盆地陆相石油地质特征及勘探实践[M].北京:石油工业出版社,1995.66～68.
[10] 中国石油地质志玉门油田编写组.中国石油地质志,(卷十三,玉门油田)[M].北京:石油工业出版社,1989.
[11] 徐 旺.酒泉东部盆地侏罗系的喷油与盆地分析[J].石油实验地质,1994,16(2):104～118.
[12] 吉让寿,钱一雄,范小林,等.中国西部地区中生代盆地与油气[M].西安:西安地图出版社,2000.
[13] 王洪潜.酒泉盆地构造特征及找油方向[J].石油勘探与开发,1993,20(增刊):15～19.
[14] 黄华芳,郑国东,方国庆,等.酒西盆地南缘推覆构造及其含油领域[J].石油与天然气地质,1993,14(3):181～190.
[15] 何光玉,卢华复,王良书,等.库车盆地烃源岩特征及生烃史特征[J].煤炭学报,2002,27(4):570～575.
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