塔河油田巴楚组底部砂泥岩段沉积特征
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摘要
塔河油田下石炭统巴楚组底部砂泥岩段岩性复杂,沉积相类型及分布规律不清楚。利用岩心观察、连井剖面对比、薄片分析、地震属性分析等方法,对巴楚组底部砂泥岩段沉积特征进行系统研究。结果表明:巴楚组底部砂泥岩段主要为冲积扇、潟湖、障壁型滨岸相沉积。冲积扇沉积发育于工区北部S85井附近,为北东-南西向展布的朵状体,岩性以大套细-中砾岩为主,物性差,不具储集能力;潟湖沉积分布于工区南部古鼻凸西南轴部,岩性主要为钙质泥岩、泥灰岩;障壁岛沉积位于工区南缘,沿北东东向平行于阿克库勒古鼻隆轴线分布;滨岸沉积位于工区西南部,主要发育临滨亚相,以细砂岩沉积为主。障壁沙坝和滨岸临滨砂岩的储集能力良好。
The sedimentary facies and distribution of the sand-mudstone member are ambiguous due to complex lithology in the bottom of Bachu Formation,Lower Carboniferous in Tahe Oilfield.Based on detailed description and observation of drilling cores,integrated with logs,casting thin-sections and seismic attributes analysis,the sedimentary systems consisting of alluvial fan,lagoon,barrier-type coastal are identified in the study area.Flower-like sand bodies of alluvial fan as non-reservoir developed along NE-SW direction in northern study area next to well S85,with a large set of conglomerate.Lagoon deposits distributed in axis of Akekule ancient uplift in southern study area,are made up of calcareous mudstone and marlite.Barrier island in southern study area distributes along the NEE direction,and parallels to the axis of the uplift.Fine sandstone of coastal shore facies deposited in the southwest part of working area.Sandstones of the barrier bar and shore facies are both favorable reservoirs.
The sedimentary facies and distribution of the sand-mudstone member are ambiguous due to complex lithology in the bottom of Bachu Formation,Lower Carboniferous in Tahe Oilfield.Based on detailed description and observation of drilling cores,integrated with logs,casting thin-sections and seismic attributes analysis,the sedimentary systems consisting of alluvial fan,lagoon,barrier-type coastal are identified in the study area.Flower-like sand bodies of alluvial fan as non-reservoir developed along NE-SW direction in northern study area next to well S85,with a large set of conglomerate.Lagoon deposits distributed in axis of Akekule ancient uplift in southern study area,are made up of calcareous mudstone and marlite.Barrier island in southern study area distributes along the NEE direction,and parallels to the axis of the uplift.Fine sandstone of coastal shore facies deposited in the southwest part of working area.Sandstones of the barrier bar and shore facies are both favorable reservoirs.
引文
[1]顾家欲,周路,白玉雷,等.塔里木盆地石炭系沉积环境与油气分布[M]//塔里木盆地油气勘探论文集.乌鲁木齐:新疆科技卫生出版社,1992:75-82.
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[5]阎相宾,李永宏.塔河油田石炭系砂层划分对比及横向预测[J].勘探地球物理进展,2002,25(5):36-41.
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[10]侯伯刚,杨池银.地震属性及其在储层预测中的影响因素[J].石油地球物理勘探,2004,39(5):553-574.
[11]赖维成,宋章强,周心怀,等.地质-地震储层预测技术及其在渤海海域的应用[J].现代地质,2009,23(5):933-939.
[12]Donald G McCubbin.Barrier-island and strand plain facies,sand-stone depositional environments[J].AAPG Memoir,1982,31:247-280.
[13]Hayes MO.Barrier island morphology as a function of tidal andwave regime[M]//Leatherman S P.Barrier Islands from theGulf of St.Lawrence to the Gulf of Mexico.NewYork:AcademicPress,1979:1-27.
[14]Sexton W J,Hayes M O.Holocene deposits of reservoir qualitysand along the central south Carolina coastline[J].AmericanAssociation of Petroleum Geologists Bulletin,1996,80:831-855.
[2]贾承造,魏国齐,姚慧君,等.盆地构造演化与区域构造地质[M].北京:石油工业出版社,1995:105-128.
[3]张尚锋,罗传容,肖传桃.塔里木盆地塔中隆起区石炭系东河砂岩油气藏的假盖层[J].石油实验地质,1996,18(4):371-376.
[4]郭齐军,赵省民.塔河地区石炭系沉积特征[J].石油与天然气地质,2002,23(1):99-102.
[5]阎相宾,李永宏.塔河油田石炭系砂层划分对比及横向预测[J].勘探地球物理进展,2002,25(5):36-41.
[6]《沉积构造与环境解释》编著组.沉积构造与环境解释[M].北京:科学出版社,1985:1-53.
[7]赵澄林.沉积学原理[M].北京:石油工业出版社,2001:22-34.
[8]HG里丁.沉积环境和相[M].周明鉴,译.北京:科学出版社,1985:179-221.
[9]冯明友,韩强,蒲仁海.用反射波强度斜率识别层序及沉积环境[J].新疆石油地质,2008,29(3):380-381.
[10]侯伯刚,杨池银.地震属性及其在储层预测中的影响因素[J].石油地球物理勘探,2004,39(5):553-574.
[11]赖维成,宋章强,周心怀,等.地质-地震储层预测技术及其在渤海海域的应用[J].现代地质,2009,23(5):933-939.
[12]Donald G McCubbin.Barrier-island and strand plain facies,sand-stone depositional environments[J].AAPG Memoir,1982,31:247-280.
[13]Hayes MO.Barrier island morphology as a function of tidal andwave regime[M]//Leatherman S P.Barrier Islands from theGulf of St.Lawrence to the Gulf of Mexico.NewYork:AcademicPress,1979:1-27.
[14]Sexton W J,Hayes M O.Holocene deposits of reservoir qualitysand along the central south Carolina coastline[J].AmericanAssociation of Petroleum Geologists Bulletin,1996,80:831-855.
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