鄂尔多斯盆地油坊庄地区长2油藏主控因素及有利区预测  

Analysis of main control factors and prediction of favorable exploration belts of Chang2 reservoir in Youfangzhuang area,Ordos Basin

作　　者：肖玲[1] 田景春[1] 魏钦廉[1] 张春生[2] 

机构地区：[1]成都理工大学沉积地质研究院,四川成都610059 [2]长江大学地球科学学院,湖北荆州434102

出　　处：《西安石油大学学报（自然科学版）》2007年第4期5-8,6,共4页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家"973"计划项目(编号:G1999022507)

摘　　要：通过对鄂尔多斯盆地油坊庄地区长2油藏烃源岩的分布与演化、构造特征、有利相带、储层特征以及保存条件等因素的系统研究,认为巨厚的烃源岩是油气成藏的基础,分流河道汇合部位厚砂体是油气富集的主要场所,高闭合度的鼻状隆起对油气藏形成具有重要的控制作用,大规模溶蚀作用形成的局部高孔高渗带是油气聚集成藏的有利地区,良好盖层是油气藏形成的重要条件.在此基础上划分出了4个有利勘探区带:元122-定108井区、洼101-元106井区、定34-定603井区、定57-定48井区.Through the all-around analysis of the source rock distribution and evolution,structural characters,favorable facies belts,reservoir characteristics and preservation conditions of Chang2 reservoir in Youfangzhuang area,it is held that hugely thick source rock is the foundation of hydrocarbon accumulation,the thick sandstone at the junction of distributary channels is the primary position for hydrocarbon accumulation,the nose-shape uplift of high closure noses has important control effects on hydrocarbon accumulation,the high-porosity and high-permeability zones formed by large-scale dissolution are the favorable areas for hydrocarbon accumulation,and good cap rock is the important condition for hydrocarbon accumulation.Based on these researches,four favorable exploration zones are found in the studied area:Yuan122-Ding108,Wa101-Yuan106,Ding34-Ding603,Ding57-Ding48 well-blocks.

关 键 词：鄂尔多斯盆地 有利勘探区带 成藏 主控因素 油坊庄地区 

分 类 号：TE112.3[石油与天然气工程—油气勘探]