海拉尔盆地苏仁诺尔油田浊积岩沉积特征
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
通过对海拉尔盆地苏仁诺尔油田南二段油层岩性组合、粒度分析、重矿物组合特征及断裂活动等方面的研究,对南二段的浊积岩沉积特征及其形成机理进行了分析,结果表明:研究区南二段油层浊积岩主要来源于凹陷东西两侧的扇三角洲前缘砂体,以西侧物源为主;岩性组合以含砾细砂岩、细砂岩和粉砂岩为主,多呈正韵律,夹于深灰色湖相泥岩中,与泥岩呈突变接触,常见鲍玛序列的B段,底部常见冲刷面;粒度概率曲线和C–M图均具有典型浊流沉积特征;南二期,控陷断层活动强烈,地震活动为主要诱发产生滑塌的外界机制,处于同沉积断层活动区域的扇三角洲前缘砂体容易向下降盘一侧深水区域发生二次搬运,形成一系列与断层走向相垂直的滑塌浊积岩砂体。研究结果为海拉尔盆地进一步的勘探评价提供了一定的理论指导作用。
Through the study of the lithology combination,grain size analysis,heavy minerals assemblage characteristics and the faults activities of Nantun II formation in Surennuoer Oilfield,the sedimentary characteristics and generation mechanism of the turbidite are analyzed. The results indicate that the Nantun II formation turbidite from Surennuoer Oilfield is mainly sourced by the pro-delta sand bodies on both the west and east side of the depression,with the western provenance as the primary one. The lithology is composed of dark grey middle to fine grain size sandstone and siltstone,with positive rhythm,usually embedded within the dark grey lacustrine shale. The contact between the shale and the sand bodies is quite sharp,and the B section of the Bauma sequence is commonly seen,and the scour surface is seen at the bottom. The C – M chart and the statistics curve of grain sizes are characterized by typical turbidite. When the Nantun II formation was deposited,the faults,which control the depression,were quite active and the resulting seismic activities could be the external mechanism for the slump. For syn-depositional pro-delta sand bodies located within the faults active areas are prone to the secondary migration,resulting a series of slump turbidite sand bodies which are perpendicular to the strike of the faults. The results provides some guidance for the further exploration and evaluation in Hailaer Basin.
引文
[1]张景军,柳成志,曹彬彬,等.乌尔逊凹陷南屯组湖底扇沉积特征研究[J].科学技术与工程,2011,11(27):6550–6555.Zhang Jingjun,Liu Chengzhi,Cao Binbin,et al.The sedimentary characteristics of the lacustrine fans of Nantun Formation in Wuerxun Sag,Hailaer Basin[J].Science Technology and Engineering,2011,11(27):6550–6555.
    [2]王金铎,韩文功,于建国,等.东营凹陷沙三段浊积岩沉积体系及其油气勘探意义[J].石油学报,2003,24(6):24–29.Wang Jinduo,Han Wengong,Yu Jianguo,et al.Turbidity system in the third section of Shahejie Formation of Dongying Sag andits implications on petroleum prospecting[J].Acta Petrolei Sinica,2003,24(6):24–29.
    [3]赵密福,信荃麟,刘泽容.惠民凹陷临南洼陷滑塌浊积岩的分布规律及其控制因素[J].石油实验地质,2001,23(3):267–271.Zhao Mifu,Xin Quanlin,Liu Zerong.Distribution rule and its controlling factors of slump turbidite of Linnan subsag in Huimin sag[J].Experimental Petroleum Geology,2001,23(3):267–271.
    [4]饶孟余,钟建华,王夕宾,等.东营凹陷东部沙三段滑塌浊积砂体沉积特征[J].煤田地质与勘探,2004,32(3):15–17.Rao Mengyu,Zhong Jianhua,Wang Xibin,et al.Sedimentary characteristics of creeping turbidite sandbody of the Member 3 of Shahejie Formation in easetern Dongying depression[J].Coal Geology&Exploration,2004,32(3):15–17.
    [5]韦东晓,田景春,倪新锋.湖相浊积砂体沉积特征及油气勘探意义[J].油气地质与采收率,2006,13(5):15–17.Wei Dongxiao,Tian Jingchun,Ni Xinfeng.Sedimentary characteristics of lacustrine turbidite sand body and its significance on petroleum exploration[J].Petroleum Geology and Recovery Efficiency,2006,13(5):15–17.
    [6]刘桠颖,徐怀民,李林,等.准噶尔盆地阜东斜坡带深水浊积扇沉积及油气勘探意义[J].沉积与特提斯地质,2009,29(4):29–35.Liu Yaying,Xu Huaimin,Li Lin,et al.Deep-water turbidite fan deposits and their significance for the oil-gas exploration in the eastern Fukang slope zone,Junggar Basin,Xinjiang[J].Sedimentary Geology and Tethyan Geology,2009,29(4):29–35.
    [7]张关龙,陈世悦,鄢继华,等.三角洲前缘滑塌浊积体形成过程模拟[J].沉积学报,2006,24(1):50–55.Zhang Guanlong,Chen Shiyue,Yan Jihua,et al.Simulation of luxoturbidite in front of delta[J].Acta Sedimentologica Sinica,2006,24(1):50–55.
    [8]鄢继华,陈世悦,姜在兴.三角洲前缘浊积体成因及分布规律研究[J].石油试验地质,2008,30(1):16–19.Yan Jihua,Chen Shiyue,Jiang Zaixing.Genesis and distribution regularity of the turbidite bodies in the delta front[J].Petroleum Geology&Experiment,2008,30(1):16–19.
    [9]韩忠义.同沉积断层对滑塌浊积体沉积的控制作用研究以胜利油田河125断层为例[J].山东科技大学学报,2008,27(3):5–8.Han Zhongyi.Control function of syndepositional fault on fluxoturbidite deposition:Taking Fault He125 of Shengli Oilfield as an example[J].Journal of Shandong University of Science and Technology,2008,27(3):5–8.
    [10]李文龙.同沉积断裂对沉积的控制作用以乌尔逊凹陷为例[J].科学技术与工程,2011,11(35):8851–8854.Li Wenlong.Control function of syndepositional structure on deposition[J].Science Technology and Engineering,2011,11(35):8851–8854.
    [11]姜在兴.沉积学[M].北京:石油工业出版社,2003.
    [12]马德波,李明,张佳佳,等.鄂尔多斯盆地西南部地区延长组浊积砂体的地震识别研究[J].石油天然气学报,2009,31(4):73–78.Ma Debo,Li Ming,Zhang Jiajia,et al.Seismic identification of turbidite sandbody in Yanchang Formation in the south of Ordos Basin[J].Journal of Oil and Gas Technology,2009,31(4):73–78.
    [13]操应长,刘晖.湖盆三角洲沉积坡度带特征及其与滑塌浊积岩分布关系的初步探讨[J].地质论评,2007,53(4):454–458.Cao Yingchang,Liu Hui.Discussion on the relationship between distribution of fluxoturbidite and depositional slope of delta in Lacustrine Basin[J].Geological Review,2007,53(4):454–458.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心