摘要
泥岩裂缝油气藏在很大程度上受控于裂缝储层的发育,储层的研究至关重要。以岩心观察为基础,结合分析化验资料,划分了沾化凹陷沙三段下亚段泥岩裂缝储层岩性组合类型,根据泥岩裂缝在测井曲线上的响应特征,明确裂缝发育与录井、测井响应的对应关系,建立不同岩性组合类型裂缝发育的岩电识别标准。根据取心层段储层的岩石学特征将泥岩储层划分为4种主要岩性组合类型:灰质泥岩与泥灰岩(上下泥岩、油泥岩)组合、变质泥岩与火成岩组合、油页岩与油泥岩互层、含砂质条带泥岩与油页岩组合。灰质泥岩与泥灰岩组合及变质泥岩与火成岩组合易发育泥岩裂缝;油页岩与油泥岩互层仅部分区域发育裂缝;含砂质条带泥岩与油页岩组合裂缝发育较少。
Mudstone-fractured reservoir is controlled by the development of shale fractured reservoir,so,reservoir study is essential.Based on the core observation,and combining with experimental analysis data,we analyzed petrophysical characteristic,physical property and grain size of reservoir from the coring interval,and the muddy reservoir in Zhanhua depression can be classified into four rock combination patterns:lime mudstone and marlite combination (upper and lower mudstone,oil mudstone),metamorphic mudstone and igneous rock combination,oil shale and oil mudstone interbed combination,sandy belt mudstone and mudstone combination,and the feature of fracture development of different lithology combination reservoir is summarized.According to the logging response characteristics of the mudstone in conventional logging data,and by means of core calibration logging,the corresponding relationship between the feature of fracture development and well logging response characteristics is established,and then the litho-electric identification standards of different lithology combination reservoir are constructed,so as to identify fractures quantitatively and predict the favorable areas of Sha Ⅲ mudstone-fractured reservoir in Zhanhua Depression.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2011年第6期18-22,112,共5页
Petroleum Geology and Recovery Efficiency
基金
国家自然科学基金项目"泥岩非构造裂缝发育规律与形成机理研究"(40872095)
关键词
泥岩裂缝
岩性组合
岩电识别标准
裂缝发育区
沾化凹陷
mudstone-fracture
lithology association
litho-electric identification standards
fractured reservoir advantageous area
Zhanhua depression
作者简介
宋梅远，女，硕士，从事石油天然气地质研究。联系电话：（0546）8512636，E—mail：smy5485161@163.com。
