石油学报 ›› 1988, Vol. 9 ›› Issue (1): 1-8.DOI: 10.7623/syxb198801001

• 论文 •    下一篇

陕甘宁盆地油气区及油气藏序列

杨俊杰, 张伯荣   

  1. 长庆石油勘探局
  • 修回日期:1986-11-01 出版日期:1988-01-25 发布日期:2013-07-08

REGION SHAN-GAN-NING PETROLIFEROUS BASIN AND ITS RESERVOIR SEQUENCE

Yang Junjie, Zhang Borong   

  1. Changqing Petroleum Administration
  • Revised:1986-11-01 Online:1988-01-25 Published:2013-07-08

摘要: 陕甘宁盆地的石油地质条件多种多样,不同基底、不同时代的地壳运动提供了多类型油气区的形成背景,区域沉积的多旋回发展产生了多套生、储、盖组合,地质构造的差异性导致了盆地内部及其周缘油气区特有的油气藏序列。陕甘宁盆地的油气区可分为四种类型。一是侏罗系延安组古地貌披盖油气区,主要位于盆地中西部,发育着延长组顶部侵蚀面上的侏罗系河道砂油、气藏序列。二是上三叠系延长组三角洲油气区,主要位于盆地东部,具有湖相三角洲前积砂体和平原分流河道砂体两种油、气藏序列。三是盆地西缘掩冲构造油气区,具有冲断构造控制的油、气藏序列。四是盆地北部古生界双层结构油气区,为受基底隆起控制的下古生界碳酸盐岩溶蚀岩块和上古生界含煤地层油气田的复合。

关键词: 陕甘宁盆地, 油气藏, 油气区, 侏罗系, 油气田, 序列, 上古生界, 古地貌, 三叠系延长组, 三角洲前积

Abstract: The petroleum geology of Shan-Gan-Ning basin are multiple in feature. The crust movements of different basement and in different ages provide the background of the formation of various types of oil-gas region. The development of multicycle of regional sidement forms serious suites of source rock, reservoir and cap rock assosiations. The differences in geological structures result in a special oil-gas reservoir sequence inside the basin as well as in adjacent region. The Shan-Gan-Ning basin oil-gas region can be divided into four types: 1. Jurassic Yanan Palaeographic drape region, located in middle west of the basin, developed Jurassic channel sand oil-gas reservoir sequence which lies on the top of erosional surface of Yanchang group. 2. Triassic Yanchang deltaic oil-gas located in east of basin with two kinds of oil-gas reservoir sequence, the lacustrine facies delta foreset sand body and plain distributary sand body. 3. Overthrust structure oil-gas region in west margin of the basin with the oil-gas reservoir sequence controlled by overthrust structure. 4. Paleozoic two-floor texture oil and gas region in north of basin is a complex of the corroded carbonate rock through lower Paleozoic and coal-series oil-gas field through upper Paleozoic which was controlled by basement uplift.