呵叻盆地H区二叠系Pha Nok Khao组沉积特征与沉积模式
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摘要
为明确呵叻盆地H区二叠系Pha Nok Khao组沉积特征,综合利用钻井、测井、地震、岩心以及分析化验等资料,研究目的层的沉积环境、岩性、地震相等特征,明确了沉积微相的分布规律,从而得到二叠系Pha Nok Khao组碳酸盐岩沉积模式。研究表明:二叠系Pha Nok Khao组为海相碳酸盐岩沉积,岩性主要为泥晶灰岩,岩心相均表现为碳酸盐岩台地前缘斜坡相沉积,地震剖面特征表现出3类反射特征,从而确定出3个地震相带;区内主要发育碳酸盐岩台地前缘缓坡相沉积,而Pha Nok Khao组主要为下缓坡沉积,仅Khao-1层上缓坡沉积范围较广。在详细分析沉积微相分布特征的基础上,确定了本区的碳酸盐岩台地缓坡沉积模式。
In order to identify sedimentary characteristics of Permian Pha Nok Khao formation in H area,sedimentary environment,lithology and seismic facies have been studied by comprehensive utilization of drilling,logging,seismic,core analysis and testing data,then the distribution of sedimentary microfacies and carbonate sedimentary model have been determined.Pha Nok Khao formation is marine carbonate sedimentary,the lithology is mainly micrite,core facies is carbonate platform foreslope facies.It is divided into 3seismic facies belt according to three kinds of reflection characteristics of the seismic section;It is the platform front gentle slope facies as the slow slope,Pha Nok Khao formation is mainly the lower gentle slope sedimentary microfacies,the upper is mainly distributed in Khao-1;On the basis of analyzing the distribution of sedimentary characteristics,sedimentary model has been determined.
In order to identify sedimentary characteristics of Permian Pha Nok Khao formation in H area,sedimentary environment,lithology and seismic facies have been studied by comprehensive utilization of drilling,logging,seismic,core analysis and testing data,then the distribution of sedimentary microfacies and carbonate sedimentary model have been determined.Pha Nok Khao formation is marine carbonate sedimentary,the lithology is mainly micrite,core facies is carbonate platform foreslope facies.It is divided into 3seismic facies belt according to three kinds of reflection characteristics of the seismic section;It is the platform front gentle slope facies as the slow slope,Pha Nok Khao formation is mainly the lower gentle slope sedimentary microfacies,the upper is mainly distributed in Khao-1;On the basis of analyzing the distribution of sedimentary characteristics,sedimentary model has been determined.
引文
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[3]李国玉.世界含油气盆地图集[M].北京:石油工业出版社,2005:78-80.
[4]李悦,王汝建,李文宝.利用有孔虫氧同位素重建古海平面变化的研究进展[J].地球科学进展,2016,33(3):310-319.
[5]张功成,王琪,苗顺德,等.中国近海海陆过渡相烃源岩二元分布模式——以珠江口盆地白云凹陷为例[J].天然气地球科学,2014,25(9):1299-1308.
[6]朱炎铭,张寒,亢韦,等.中上扬子地区龙马溪组、筇竹寺组页岩有机质微孔缝特征:生物发育与孔隙网络[J].天然气地球科学,2015,26(8):1507-1515.
[7]王倩,常凤鸣,李铁刚,等.亚马逊冲积扇海域表层海水古盐度定量重建:浮游有孔虫Ba/Ca指标的应用[J].第四纪研究,2015,35(2):383-389.
[8]杜洋,樊太亮,高志前.塔里木盆地中下奥陶统碳酸盐岩地球化学特征及其对成岩环境的指示——以巴楚大板塔格剖面和阿克苏蓬莱坝剖面为例[J].天然气地球科学,2016,27(8):1509-1523.
[9]陈雅丽,储雪蕾,张兴亮,等.陕南镇巴地区灯影组白云岩的碳、硫同位素和微量元素指示:埃迪卡拉纪末期浅海的氧化还原环境[J].中国科学:地球科学,2015,45(7):963-981.
[10]李强.南秦岭富钠长石岩石的岩石学和地球化学研究[J].岩石矿物学杂志,2011,30(2):199-207.
[11]范兴燕,张研,唐衔,等.断陷湖盆地震相模式研究要点——以Capella油田为例[J].石油地球物理勘探,2015,50(6):1196-1206.
[12]田雷,崔海峰,陈永权,等.麦盖提斜坡西段石炭系小海子组高能滩沉积体地震识别[J].天然气地球科学,2014,25(6):928-933.
[13]赵文光,蔡忠贤,邹华耀.川东北元坝地区三叠系飞仙关组碳酸盐岩台地演化影响因素分析[J].石油地球物理勘探,2010,45(3):410-413.
[14]KALLWEIT R,WOOD L.The limits of resolution of zerophase velets[J].Geophysics,1982,47(7):1035-1046.
[15]罗平,张静,刘伟,等.中国海相碳酸盐岩油气储层基本特征[J].地学前缘,2008,15(1):36-50.
[16]王振升,汤戈,苏俊青,等.尼日尔Moul凹陷白垩系Yogou组海陆过渡相沉积与成藏条件[J].天然气地球科学,2016,27(7):1153-1163.
[17]金振奎,石良,高白水,等.碳酸盐岩沉积相及相模式[J].沉积学报,2013,31(6):965-979.