塔河油田AT1井区中三叠统中油组湖底扇沉积特征研究
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摘要
塔河油田南部AT1井区中三叠统中油组是最重要的含油气层系,其沉积相类型及其对砂体展布和油气储层的控制等地质开发问题倍受重视。文中在地震储层反演、岩心描述和测井分析基础上,结合铸体薄片、粒度分析等大量测试资料,对该地区中油组沉积相类型及特征进行深入研究的结果表明:塔河油田三叠系AT1井区中油组为湖底扇沉积。该区发育AA、AB型非典型鲍玛序列,并主要发育中扇亚相。该亚相可以识别出辫状水道、水道间漫溢、无水道席状砂等微相,主要储集砂体为中扇辫状水道。该文结合区域地质背景,探讨了浊积扇的成因机制,并建立了相应的沉积模式。
Middle Triassic Zhongyou Formation in AT1 area of southern Tahe Oilfield is an important oil and gas-bearing layer,of which the sedimentary type,sand body distribution,reservoir control and other kinds of geological issues are paid much attention to.Based on seismic inversion,core description and logging analysis,combined with cast thin section and grain size analysis,the sedimentary facies and characteristics are studied.The result shows that Middle Triassic Zhongyou Formation in AT1 area of Tahe Oilfield belongs to sublacustrine fan deposits,and AA and AB type non-typical Bouma sequence are widely developed.Meanwhile,Zhongyou Formation of AT1 area mainly developed middle fan subfacies,among which braided channel,interchannel overflow,non-channel sand sheet are identified.The main reservoir sand is middle fan-braided channel.Based on the regional geologic setting,the genetic mechanism of turbidite fan is discussed and corresponding sedimentary model is established.
Middle Triassic Zhongyou Formation in AT1 area of southern Tahe Oilfield is an important oil and gas-bearing layer,of which the sedimentary type,sand body distribution,reservoir control and other kinds of geological issues are paid much attention to.Based on seismic inversion,core description and logging analysis,combined with cast thin section and grain size analysis,the sedimentary facies and characteristics are studied.The result shows that Middle Triassic Zhongyou Formation in AT1 area of Tahe Oilfield belongs to sublacustrine fan deposits,and AA and AB type non-typical Bouma sequence are widely developed.Meanwhile,Zhongyou Formation of AT1 area mainly developed middle fan subfacies,among which braided channel,interchannel overflow,non-channel sand sheet are identified.The main reservoir sand is middle fan-braided channel.Based on the regional geologic setting,the genetic mechanism of turbidite fan is discussed and corresponding sedimentary model is established.
引文
[1]付国民,马洪涛.塔河油田南部中油组气藏描述研究报告.中国石化西北油田分公司,2008.
[1]郭建华,刘辰生,朱锐.阿克库勒地区三叠系层序地层学及储集砂体成因类型[J].沉积学报,2007,25(2):167-176.
[2]刘辰生,郭建华.新疆阿克库勒地区三叠系中油组层序地层学研究[J].地层学杂志,2008,32(1):41-46.
[3]张希明,王恕一.塔里木盆地北部三叠系辫状三角洲砂体储层非均质性研究[J].石油实验地质,1997,19(3):201-207.
[4]刘宪斌,万晓樵,林金逞.陆相浊流沉积体系与油气[J].地球学报,2003,24(1):61-66.
[5]姜涛,解习农.细粒浊积体研究现状与展望[J].地球学报,2003,24(3):289-292.
[6]李文厚,邵磊,魏红红,等.西北地区湖相浊流沉积[J].西北大学学报:(自然科学版),2001,31(1):57-62.
[7]曾允孚,夏文杰.沉积岩石学[M].北京:地质出版社,1986:35-40.
[8]马全华.浊积岩的成因识别及沉积模式探讨[J].西南石油大学学报:(自然科学版),2008,30(3):42-43.
[9]丁桔红.湖盆浊积砂体及类型研究[J].华南地质与矿产,2007,23(2):6-11.
[10]郑荣才,王海红,韩永林,等.鄂尔多斯盆地姬塬地区长6段沉积相特征和砂体展布[J].岩性油气藏,2008,20(3):21-26.
[11]卫平生,潘树新,王建功,等.雷明湖岸线和岩性地层油气藏的关系研究[J].岩性油气藏,2008,19(1):27-31.
[12]石雪峰,杜海峰.姬塬地区长3—长4+5油层组沉积相研究[J].岩性油气藏,2008,20(1):59-63.
[13]刘化清,袁剑英,李相博,等.鄂尔多斯盆地延长期湖盆演化及其成因分析[J].岩性油气藏,2007,19(1):52-56.
[14]蔡佳,姜华,赵忠新,等.泌阳凹陷下二门油田南部H31层序沉积体系及沉积相演化特征[J].岩性油气藏,2008,20(3):53-58.
[1]郭建华,刘辰生,朱锐.阿克库勒地区三叠系层序地层学及储集砂体成因类型[J].沉积学报,2007,25(2):167-176.
[2]刘辰生,郭建华.新疆阿克库勒地区三叠系中油组层序地层学研究[J].地层学杂志,2008,32(1):41-46.
[3]张希明,王恕一.塔里木盆地北部三叠系辫状三角洲砂体储层非均质性研究[J].石油实验地质,1997,19(3):201-207.
[4]刘宪斌,万晓樵,林金逞.陆相浊流沉积体系与油气[J].地球学报,2003,24(1):61-66.
[5]姜涛,解习农.细粒浊积体研究现状与展望[J].地球学报,2003,24(3):289-292.
[6]李文厚,邵磊,魏红红,等.西北地区湖相浊流沉积[J].西北大学学报:(自然科学版),2001,31(1):57-62.
[7]曾允孚,夏文杰.沉积岩石学[M].北京:地质出版社,1986:35-40.
[8]马全华.浊积岩的成因识别及沉积模式探讨[J].西南石油大学学报:(自然科学版),2008,30(3):42-43.
[9]丁桔红.湖盆浊积砂体及类型研究[J].华南地质与矿产,2007,23(2):6-11.
[10]郑荣才,王海红,韩永林,等.鄂尔多斯盆地姬塬地区长6段沉积相特征和砂体展布[J].岩性油气藏,2008,20(3):21-26.
[11]卫平生,潘树新,王建功,等.雷明湖岸线和岩性地层油气藏的关系研究[J].岩性油气藏,2008,19(1):27-31.
[12]石雪峰,杜海峰.姬塬地区长3—长4+5油层组沉积相研究[J].岩性油气藏,2008,20(1):59-63.
[13]刘化清,袁剑英,李相博,等.鄂尔多斯盆地延长期湖盆演化及其成因分析[J].岩性油气藏,2007,19(1):52-56.
[14]蔡佳,姜华,赵忠新,等.泌阳凹陷下二门油田南部H31层序沉积体系及沉积相演化特征[J].岩性油气藏,2008,20(3):53-58.
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