辽河坳陷东部凹陷欧-黄地区火山岩储集层特征及有利储层预测  

Characteristics of volcanic rock reservoirs in Ou-Huang area of the eastern sag in Liaohe depression and prediction of favorable reservoirs

作　　者：张新培[1] 邓宏文[1] 张吉昌[2] 孙晓明[3] 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国石油辽河油田勘探开发研究院,辽宁盘锦124010 [3]辽河石油职业技术学院,辽宁盘锦124010

出　　处：《石油与天然气地质》2007年第3期370-376,共7页Oil & Gas Geology

摘　　要：辽河坳陷欧-黄地区沙河街组发育玄武岩、粗面岩、凝灰岩3类火山岩,后期受构造裂缝改造的粗面岩为该区的优质储层。综合运用扫描电镜、铸体薄片、X-CT扫描等方法,对粗面岩储集空间内的原生孔隙及裂缝、次生溶孔及裂缝作精细描述,并结合探边测试获取的储层物性信息,准确地提取反映储集空间类型和特征的参数。结果显示,溶孔洞-裂缝型储层最好,溶孔-微孔型储层次之。在常规难以有效区分火山岩岩性的情况下,利用测井响应、多井约束波阻抗反演等技术,选择适当的方法和参数类型,实现了研究区内优质储层的识别和预测,结果与钻井实测数据符合度较高(储层厚度误差仅有3%),应用效果显著。Three types of volcanic rocks, i.e. basalt, trachyte, and tuff, are developed in the Shahejie Formation of Ou-Huang area in Liaohe depression. The trachyte that had gone through structural fracturing in later stage forms high-grade reservoir in the area. To acquire accurate parameters that honestly reflect the reservoir space types and features, techniques such as SEM, cast lamella, and X-CT scanning, are integrated for fine description of the primary pores and fractures and secondary dissolution pores and fractures in the reservoir space of trachyte, and for obtaining reservoir physical properties in combination with RLT. The result indicates that the dissolved vuggy-fractured reservoir has the best poroperm properties, and the second best are the dissolved pore-micropore reservoirs. It also suggests that by adopting technologies like log response and multi-well constrained impedance inversion, together with proper choice of methods and parameters, the recognition and prediction of high-grade reservoirs in the study area （where conventional techniques are inefficient） is not only possible but consists well with the real drilling/well-logging data（ with thickness error at 3 % only）.

关 键 词：粗面岩 储集空间 储层类型 东部凹陷 辽河坳陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]