直罗油田长8储层有利勘探目标优选  

Optimal selection of favorable exploration target in Chang 8 reservoirs of Zhiluo oilfield

作　　者：马二平 李向东[2] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]延长油田股份有限公司靖边采油厂

出　　处：《石油地质与工程》2018年第3期37-40,共4页Petroleum Geology and Engineering

摘　　要：直罗油田长8段储层为三角洲前缘亚相砂体沉积,砂体平面展布形态主要受物源、沉积微相、水动力的影响,属低孔低渗储层,具有一定的勘探开发潜力,需要进一步扩边勘探。通过沉积相、储层物性特征分析,结合烃源岩分布与异常压力之间的相互关系及其对油气富集的控制影响作用,筛选出一类有利勘探目标区3个,二类有利目标区5个;直罗地区长8储层油气富集规律的主要控制因素可归纳为"近油源、优势相、低压区"。Chang 8 reservoirs of Zhiluo oilfield belong to delta front sub facies depositional sand bodies, and the plane distribution of sand bodies is mainly affected by provenance, sedimentary microfacies and hydrodynamic force. As a low porosity and low permeability reservoir, it has a good potential in exploration and development, which needs further extension on exploration. Through comprehensive analysis of sedimentary facies and reservoir quality, in combination with the relationship between the source rock distribution and abnormal pressure, 3 primary exploration target areas and 5 secondary exploration target areas were screened out. The main controlling factors of the hydrocarbon enrichment in Chang 8 reservoirs can be summarized as ‘close to hydrocarbon source, favorable facies and low–pressure district'.

关 键 词：直罗油田 长8储层 储层特征 有利目标 

分 类 号：TE112.23[石油与天然气工程—油气勘探]