车镇北带古近系砂砾岩体储层特征及影响因素分析  

Characters and Influence Factors on Paleogene Sandy-conglomerate Reservoirs in the North of Chezhen Sag

作　　者：李凌[1] 林会喜[1] 范振峰[1] 毕彩芹[1] 石泉清[1] 

机构地区：[1]胜利油田有限分公司地质科学研究院,山东东营257015

出　　处：《石油天然气学报》2008年第2期410-413,共4页Journal of Oil and Gas Technology

摘　　要：通过岩芯观察、薄片鉴定、物性分析、扫描电镜观察等技术手段,研究了车镇凹陷北部陡坡带古近系砂砾岩体储层的主要岩石类型、储集空间类型、物性特征和影响因素。研究结果表明,砂砾岩体岩石学特征具有成分成熟度和结构成熟度低的特点;主要储集空间类型为粒间溶孔和粒内溶孔,微裂缝也具有一定的储集意义;该区砂砾岩体储层物性具有随埋深增加而变差的趋势,且在深部地层中次生孔隙较为发育,影响该区储层物性的因素主要有沉积相、成岩作用以及异常压力,其中沉积相带是控制储层物性的根本性因素。The main types of rocks and reservoir spaces,characters and influence factors of paleogene sandy-conglomerate fan reservoirs in the northern steep slope zone of Chezhen Sag were studied by means of observation is on cores,electronic scanning and thin-section analysis.Study results show that grade of maturity of rock structure and ingredient are low;the main types of reservoir spaces are intragranular pores and intergranular pores,microfissures are the secondary types of reservoir spaces;reservoir properties have a descent trend with depth increase and secondary pores are rather developed in the deep reservoirs;the main influence factors on reservoir properties include sedimentary facies,diagenesis,high abnormal pressure,and sedimentary facies are the essential factors.

关 键 词：储层物性 影响因素 陡坡带 砂砾岩体 车镇凹陷 

分 类 号：P618.13[天文地球—矿床学]