塔北隆起东河砂岩层序地层和沉积体系研究
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摘要
根据野外露头、钻井、测井和地震资料,将塔北隆起泥盆系东河砂岩划分为一个三级层序,该层序具有明显的从水进到水退的沉积结构,中部为最大水进期,自下而上可明显地划分为海侵体系域和高位体系域。东河砂岩主要形成于浪控滨岸环境,主体岩性为岩屑石英砂岩,具有较高的成分和结构成熟度,发育交错层理、平行层理、冲洗层理、块状层理以及生物扰动构造。根据地震剖面上的叠瓦状前积结构和岩芯观察,认为在东河20井,赛克低凸起和草4井附近发育有浪控三角洲体系。
Based on the outcrop,borehole,logging and seismic data,the Donghe Sandstone in Tabei Uplift is defined as a third-sequence stratigraphy.This sequence has an obvious sedimentary cycle from transgression to regression,and can be divided into transgressive system tract and highstand system tract.The major lithology of the Donghe Sandstone is detritus quartz sandstone which has a high composition and texture maturity.It develops cross bedding,parallel bedding,swash bedding,massive bedding and bioturbate structure.According to the progradational seismic facies and the core observation,wave-dominated delta depositional system is developed in well Donghe 20,Saike Uplift and well Cao 4.
Based on the outcrop,borehole,logging and seismic data,the Donghe Sandstone in Tabei Uplift is defined as a third-sequence stratigraphy.This sequence has an obvious sedimentary cycle from transgression to regression,and can be divided into transgressive system tract and highstand system tract.The major lithology of the Donghe Sandstone is detritus quartz sandstone which has a high composition and texture maturity.It develops cross bedding,parallel bedding,swash bedding,massive bedding and bioturbate structure.According to the progradational seismic facies and the core observation,wave-dominated delta depositional system is developed in well Donghe 20,Saike Uplift and well Cao 4.
引文
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[2]郭建华,曾允孚,翟永红,等.塔中地区石炭系东河砂岩层序地层研究[J].沉积学报,1996,14(2):56-65.
[3]朱筱敏,张强,赵澄林,等.塔里木中部地区东河砂岩段沉积特征和沉积环境演变[J].地质科学,2004,39(1):27-35.
[4]刘静江.塔中45井泥盆纪鱼类化石的发现及东河砂岩的时代[J].新疆石油地质,1998,19(2):140.
[5]朱怀诚,赵治信.塔里木盆地泥盆-石炭系孢粉研究新进展.新疆石油地质[J].1999,20(3):248-251.
[6]杨松岭,高增海,赵秀岐.塔里木盆地东河砂岩层序特征与分布规律[J].新疆石油地质,2002,23(1):35-37.
[7]朱筱敏,张强,吕雪雁.塔里木盆地塔北与塔中地区东河砂岩段沉积特征对比[J].中国地质,2005,32(4):648-654.
[8]顾家裕,张兴阳,郭彬程.塔里木盆地东河砂岩沉积和储层特征及综合分析[J].古地理学报,2006,8(3):285-294.
[9]王招明,田军,申银民,等.塔里木盆地晚泥盆世-早石炭世东河砂岩沉积相[J].古地理学报,2004,6(3):289-295.
[10]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997.
[11]Catuneanu O.Principles of Squence Stratigraphy[M].北京:石油工业出版社,2009.
[12]Van Wagoner J C,Mitchum,P R Jr,Campion K M,et al.Silicicalastic sequence stratigraphy in well logs,cores,and outcrops:Concepts for high-resolution correlation oftime and facies[J].AAPG Methods in exploration se-ries,1990,(7):8-16.
[13]田景春,陈高武,张翔,等.沉积地球化学在层序地层分析中的应用[J].成都理工大学学报:自然科学版,2006,33(1):30-35.
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