白音查干凹陷锡林好来油田白云质泥岩储层研究
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摘要
综合运用沉积岩石学及储层地质学方法,利用岩心观察及地震资料分析,工区发育一套白云质泥岩储层,层位上主要位于腾格尔组上段,集中分布在环洼带的断层带附近,结合铸体薄片、分析化验资料,白云岩为后生交代作用形成,其储集空间主要为溶蚀孔洞及各种裂缝,其裂缝主要为垂直裂缝、水平裂缝及剪切缝。由于白云质泥岩储集空间的特殊性,导致油水关系分布复杂,主要以缝洞油、封存油、隔离油、封存水、隔离水等形态存在。此类油藏的发现对于锡林好来油田的稳产有重要意义。
It is found that there grows a set of dolomitic mudstone reservoir in the operation area,whose horizon is mainly located at Upper Memeber in Tenger Formation and is mainly distributed near fault region around ring depression region by using the methods of sedimentary petrology and reservoir geology,core observation and seismic data analyses.Based on cast thin slice,laboratory test analysis,it is also found that the dolomite is formed by epigenetic metasomatism,whose reservoir spaces are majorly corrosion cavern and fractures of vertical,horizontal and shear types.The particularity of reservoir space of dolomitic mudstone leads to complex distribution of oil and water correlation,which exist mainly in the form of seam hole oil,sealed oil,isolated oil,connate water and isolated water.The finding-out of the reservoirs is significant to the steady production of Xilinhaolai Oilfield.
It is found that there grows a set of dolomitic mudstone reservoir in the operation area,whose horizon is mainly located at Upper Memeber in Tenger Formation and is mainly distributed near fault region around ring depression region by using the methods of sedimentary petrology and reservoir geology,core observation and seismic data analyses.Based on cast thin slice,laboratory test analysis,it is also found that the dolomite is formed by epigenetic metasomatism,whose reservoir spaces are majorly corrosion cavern and fractures of vertical,horizontal and shear types.The particularity of reservoir space of dolomitic mudstone leads to complex distribution of oil and water correlation,which exist mainly in the form of seam hole oil,sealed oil,isolated oil,connate water and isolated water.The finding-out of the reservoirs is significant to the steady production of Xilinhaolai Oilfield.
引文
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[3]黄翠蓉,张光荣,王英华.我国部分地区白云岩岩石矿物学研究及其意义[J].地质论评,1987,33(5):451-459.
[4]赫云兰,刘波,秦善.白云石化机理与白云岩成因问题研究[J].北京大学学报:自然科学版,2010,46(6):1010-1018.
[5]周江羽,韩燕英,林忠民.塔北地区下石炭统含盐层系的沉积演化及成盐机理[J].新疆石油地质,1999,20(3):244-247.
[6]张学丰,胡文,张军涛.白云岩成因相关问题及主要形成模式[J].地质科技情报,2006,25(5):33-38.
[7]朱金富,于炳松,樊太亮,等.沉积成岩环境对白云岩储层的影响[J].新疆地质,2009,27(1):44-47.
[8]陈荣坤.稳定氧碳同位素在碳酸盐岩成岩环境研究中的应用[J].沉积学报,1994,12(4):12-20.
[9]赵宝生,刘桂兰,张本书,等.泌阳凹陷白云岩系储层特征研究[J].石油地质与工程,2010,24(5):13-16.
[10]钟大康,朱筱敏,王贵文,等.南襄盆地泌阳凹陷溶孔溶洞型白云岩储层特征与分布规律[J].地质论评,2004,50(2):162-168.
[11]陈代钊.构造─热液白云岩化作用与白云岩储层[J].石油与天然气地质,2008,29(5):618-619.
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