西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (6): 66-72.

• 地质勘探 • 上一篇    下一篇

托甫台区东河砂岩油藏地层结构与封堵性分析

杨士明1,2,盛海波3   

  1. 1. 长江大学油气资源与勘探技术教育部重点实验室,湖北荆州4340002. 长江大学地球物理与石油资源学院,湖北荆州4340003. 中国石化西北石油局勘探开发研究院,新疆乌鲁木齐834000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-12-01 发布日期:2012-12-01

Strata Structure and Sealing Analysis for Donghe Sandstone Reservoir inTuofutai Area

Yang Shiming1,2, Sheng Haibo3   

  1. 1. MOE Key Laboratory of Exploration Technologies for Oil and Gas Resources,Yangtze University,Jingzhou,Hubei 434000,China2. Geophysics and Oil Resource Institute Yangtze University,Jingzhou,Hubei 434000,China3. Northwest Oilfield Branch Company,China Petroleum and Chemical Corporation,Urumqi,Xinjiang 834000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-12-01 Published:2012-12-01

摘要: 托甫台西东河塘组顶面整体表现为东南倾伏的单斜构造,局部有较多的微型低幅度背斜。本地区东河砂岩油藏属于海退环境下受古地貌控制的以砂坝沉积为主的油藏。泥盆系东河塘组(D3d)及其下伏的志留系柯坪塔格组(S1k)、上覆的石炭系巴楚组(C1b1)在本地区都有剥蚀尖灭。东河塘组及与其相接触的地层在东河塘组尖灭线附件岩上性具有封堵接触与非封堵接触特征,构造、地层岩性以及地层接触关系三因素造成了东河塘组油藏圈闭顶、底板及侧向封堵的特色。通过构造及顶、底板岩性分析和侧向封堵性分析,找出了有效圈闭分布区域,对目前进一步的开采以及外围区进一步的勘探具有现实意义。

关键词: 低幅度背斜, 圈闭, 不整合面, 封堵, 东河砂岩

Abstract: The top structure of Donghetang Formation to the west of Tuofutaiat is Monocline structure,and there are many
low-amplitude anticlines in the local area. In this region,Donghe sandstone reservoir is primarily a dam deposits reservoir,
which is under the environment of regression by palaeo geomorphology control. Denudation pinchout happens in Devonian
Donghetang Formation strata,silurian Kepingtage Formation strata under Donghetang Formation and carboniferous Bachu
formation strata overlying Donghetang Formation. Lithology of Donghetang Formation strata and its contacting strata has a
local distribution features,structure,stratigraphic lithology and stratigraphic contact relation. These three factors caused the
characteristics of sealing for Donghetang Formation reservoir trap of roof,floor and lateral. Through the construction and the
roof and floor lithologic analysis and sealing analysis,the effective trap distribution area was found out,which has realistic
meanings to further exploitation at further exploration in the present and peripheral zones.

Key words: low-amplitude anticline, trap, unconformity surface, sealing, Donghe sandstone