合水地区长63深水重力流沉积特征研究
Characteristics of deep-water gravity flow sedimentation of Chang 63 in Heshui area,Ordos Basin
车雨恒 1魏钦廉 1陈曦 2田伟 1李小军 3张洪军 4赵爱彬 4唐婧5
作者信息
- 1. 西安石油大学地球科学与工程学院,陕西西安 710065;陕西省油气成藏地质学重点实验室,陕西西安 710065
- 2. 延长油田股份有限公司定边采油厂,陕西榆林 718699
- 3. 中国石油长庆油田分公司第二采油厂,甘肃庆城 745100
- 4. 中国石油长庆油田分公司第十二采油厂,甘肃合水 745400
- 5. 中国石油长庆油田分公司咨询中心,陕西西安 710018
- 折叠
摘要
合水地区是鄂尔多斯盆地近年来原油勘探的重点区块,在系统分析沉积构造、岩石学特征、结构粒度特征等沉积相识别标志的基础上,结合区域沉积背景,开展了合水地区长63 重力流沉积类型及展布特征研究.结果表明,合水地区长63 油层亚组为湖泊-重力流沉积体系,发育半深湖-深湖沉积亚相,可进一步划分为浊流沉积、砂质碎屑流、滑塌沉积三种重力流沉积类型;其中砂质碎屑流及浊流为主要控砂微相,主要分布在研究区的中部、南部区域,为区内有利储集相带.
Abstract
Heshui area has been a key area for crude oil exploration in Ordos Basin in recent years.On the basis of systematic analysis of sedimentary structure,petro-logical characteristics,structural grain size characteristics and other sedimentary facies identification indicators,combined with regional sedimentary background,a study was conducted on the sedimentary types and distribution characteristics of the Chang 63 gravity flow in Heshui area.The results show that Chang 63 belongs to a lacustrine gravity flow sedimentary system,and sedimentary sub-facies,semi-deep lacustrine-deep lacustrine are developed,which can be subdivided into turbidity sedimentation,sandy debris flow and slump sedimentation.Sand debris flow and turbidity current are the main sand controlling micro-facies,which are mainly distributed in the central and southern parts,and are favorable reservoir facies belt in the area.
关键词
鄂尔多斯盆地合水地区/长63/油层亚组/重力流沉积/砂质碎屑流/浊流Key words
Heshui area of Ordos Basin/sub-layer in Chang 63 formation/gravity flow sedimentation/sandy debris flow/turbidity current引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据