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现代地质 ›› 2005, Vol. 19 ›› Issue (Suppl): 59-63.

• 石油地质 • 上一篇    下一篇

冀中饶阳凹陷留西地区沙三上段辫状河三角洲沉积特征及其含油性

梁宏斌1,2,王海潮2,韩春元2,崔周旗2,郭永军2,杨彩虹2,彭维松2   

  1. 1中国科学院 广州地球化学研究所,广州 广东510640;2华北油田公司 勘探开发研究院,河北 任丘062552
  • 收稿日期:2004-07-10 修回日期:2004-10-11 出版日期:2005-03-20 发布日期:2013-04-08
  • 作者简介:梁宏斌,男,高级工程师,博士研究生,1963年出生,沉积学专业,主要从事沉积学、油气勘探及相关管理等方面的工作。

THE BRAIDED FLUVIAL DELTA DEPOSITIONAL CHARACTERISTICSAND OIL-BEARING PROPERTIES OF THE UPPER SHASAN MEMBER IN THE LIUXI REGION, RAOYANG SAG

LIANG Hong-bin1,2,WANG Hai-chao2,HAN Chun-yuan2,CUI Zhou-qi2,GUO Yong-jun2,YANG Cai-hong2,PENG Wei-song2   

  1. 1Guangzhou Institute of Geochemistry,Chinese Academy of Sciences, Guangzhou, Guangdong510640,China;
    2 Huabei Oilfield, Renqiu, Hebei062552, China
  • Received:2004-07-10 Revised:2004-10-11 Online:2005-03-20 Published:2013-04-08

摘要:

通过沉积背景分析,根据砂体特征、岩心观察认为留西地区沙三上段为辫状河三角洲沉积,其平原相不发育,前缘亚相主要发育水下分流水道、河口坝、席状砂等微相,其沿留路断层成近东西向展布。沙三上段埋深在3 200~4 000 m的油藏的储集空间属于次生孔隙类型,主要储集体类型为水下分流水道、河口坝,它们在埋深小于4 000m的区域均是具有经济效益的勘探目标。留西地区形成的北高南低构造斜坡背景与辫状河三角洲近东西向展布的砂体形态相互配置,为后期油藏的形成创造了条件。在帚状断裂体系控制下,留西地区沙三段辫状河三角洲北部发育构造油藏,中南部发育隐蔽油气藏。

关键词: 留西地区, 辫状河三角洲, 沉积特征, 储集特征, 隐蔽油气藏

Abstract:

Based on the analysis of depositional settings, sandbody characteristics and core observations of wells drilled, the upper Shasan Member is a braided fluvial delta with a undeveloped delta plain. The braided fluvial delta front includes underwater distributary channel, mouth bar and sand sheet.The reservoir at the interval of 3200-4000m belongs to secondary pore type in the Liuxi region. The sandbodies of distributary channel and mouth bar buried less 4000m are all of exploratory targets with economic benefit. Structural landform low in the south and high in the north matchs with sandbodies  closed to westeast through going in the Liuxi region.So the conditions for pool-forming are created later. The structural reservoirs develop in the north and subtle reservoirs in the middle-south under the control of brush faulted system.

Key words: Liuxi region, braided fluvial delta, depositional characteristic, reservoir characteristic, subtle reservoir

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