演武油田长3油层段优质储层特征及预测

发布时间：2018-03-26 13:21

本文选题：下渗大气水　切入点：溶蚀作用　出处：《成都理工大学学报(自然科学版)》2017年04期

【摘要】：探讨鄂尔多斯盆地演武油田长3油层段相对优质储层富集规律,为同类型油藏勘探开发提供借鉴。从研究区长3油层段砂岩储层的沉积背景、成岩作用和微观特征入手,运用古地貌恢复等方法,对古地貌单元中邻近不整合面的斜坡和残丘带的储层发育特征进行了重点研究。结果表明研究区延长组古暴露面上发生的下渗大气水对不整合面之下储层进行的溶蚀改造最为强烈,是形成相对优质储层的关键因素,有利于油气充注成藏。古地貌单元中的斜坡和残丘带是优质储层的勘探评价有利区带。
[Abstract]:In order to provide reference for exploration and development of the same type of reservoirs, this paper discusses the relative high quality reservoir enrichment law of Chang3 formation in Yanwu Oilfield, Ordos Basin. The sedimentary background, diagenesis and microscopic characteristics of sandstone reservoirs in Chang 3 formation are studied. Using methods such as paleogeomorphic restoration, The reservoir development characteristics of slope and residual mound zone adjacent to unconformities in paleogeomorphology unit are studied. The results show that the permeable atmospheric water occurring on paleo-exposed surface of Yanchang formation in the study area is responsible for the reservoir under unconformity surface. The dissolution transformation is the strongest. The slope and residual mound belt in paleogeomorphic unit are favorable zones for exploration and evaluation of high quality reservoirs.
【作者单位】：中国石油长庆油田分公司第十一采油厂;中国石油长庆油田分公司气田开发处;
【基金】：中国石油天然气股份有限公司长庆油田分公司油藏评价研究项目(2016GSKJ020103)
【分类号】：P618.13

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