鄂尔多斯盆地大路沟地区长6储层孔隙结构及物性特征研究  

Study on pore structure and physical properties of Chang 6 reservoir in Dalugou area,Ordos Basin

作　　者：黄智涵 喻意[3] 王小龙[3] 彭述兴 朱旭[3] 平赵勇 HUANG Zhihan;YU Yi;WANG Xiaolong;PENG Shuxing;ZHU Xu;PING Zhaoyong(School of Earth Sciences and Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi'an Shaanxi 710065,China;Oil Production Plant 4 of PetroChina Changqing Oilfield Company,Jingbian Shaanxi 718500,China)

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]陕西省油气成藏地质学重点实验室,陕西西安710065 [3]中国石油长庆油田分公司第四采油厂,陕西靖边718500

出　　处：《石油化工应用》2024年第2期76-81,共6页Petrochemical Industry Application

摘　　要：在油气勘探开发中,储层岩石孔隙结构对油气井采收量、产能以及油气储量均能产生影响,特别是孔隙结构参数可以用来表征储层孔隙质量,在油气勘探开发中具有重要意义。因此,本文以鄂尔多斯盆地大路沟地区长6储层为研究对象,对其孔隙结构及物性特征进行详细剖析,认为研究区长6储层岩性以长石砂岩和岩屑长石砂岩为主;孔隙度在9%~15%,渗透率在0.3~1.5 mD。同时,根据沉积旋回原理将研究区长6储层分为长6_(1)、长6_(2)、长6_(3)三个小层,各小层之间的物性差别较大,其中长61小层的储层物性最好,长63小层的储层物性较差。根据以上结论,得出长6储层属于低孔、低渗透储层。In oil and gas exploration and development,the pore structure of reservoir rocks can effect on reserves,productivity and recovery efficiency of the oil and gas.In particular,parameters of pore structure can be used to characterize the quality of reservoir pores and play an important role in exploration and development of oil and gas.Therefore,this paper focused on the Chang 6 reservoir in the Dalugou area of the Ordos Basin,and took a detailed analysis of the pore structure and physical properties.The lithology of Chang 6 reservoir in the study area is mainly feldspar sandstone and lithic feldspar sandstone.Its porosity ranged from 9%to 15%,and its permeability from 0.3 mD to 1.5 mD.The Chang 6 reservoir in the study area,based on sedimentary cycles,was divided into three sub layers,Chang 6_(1),Chang 6_(2) and Chang 6_(3).The physical properties of each sub layer varied greatly,with the Chang 61 sub layer having the best physical properties,but the Chang 63 sub layer having the worst physical properties.According to the above conclusions,it is concluded that Chang 6 reservoir belongs to low porosity and low permeability reservoir.

关 键 词：鄂尔多斯盆地 长6储层 孔隙结构 物性特征 

分 类 号：TE122.2[石油与天然气工程—油气勘探]