东营凹陷沙四段近岸水下扇地震沉积学——以东辛油田盐斜229块砂砾岩油藏为例
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摘要
东营凹陷北坡陡坡带发育有众多沉积类型的砂砾岩油藏,目前对该类油藏储层的发育特征认识不清,描述技术尚未成熟,必须对砂砾岩扇体内部的期次及其分布特征开展系统的研究。以沉积学和层序地层学为指导,以地震沉积学为基础,通过井震结合的方法对砂砾岩油藏期次进行研究,将研究区地层划分为3个期次。以岩心、测井、地震分析为基础,明确扇根、扇中、扇端三个亚相特征,通过地震相分析及波阻抗反演技术明确各个亚相的空间展布范围,扇中亚相是储层发育的有利相带,对于油田指导砂砾岩油藏勘探与开发工作部署具有重要的意义。
There are many sedimentary types of glutenite reservoirs in the steep slope of the northern slope of Dongying depression. At present,the development characteristics of this type of reservoir are unclear,the description technique is not mature. Therefore,it is necessary to carry out systematic study on the periods and distribution characteristics of the glutenite fans. Guided by sedimentology and sequence stratigraphy,and based on seismic sedimentology,three sedimentary sequences were divided for the conglomerate in the area through seismic and drilling data. According to the analysis of core,logging,and seismic date,the characteristics of upper fan,mid fan,lower fan are clarified. By seismic phase analysis and wave impedance inversion technique,the spatial distribution range of each sub-phase is determined,researches shows the mid fan is a favorable face belt for reservoir development. It is of great significance to guide the exploration and development of glutenite reservoir in oil field.
There are many sedimentary types of glutenite reservoirs in the steep slope of the northern slope of Dongying depression. At present,the development characteristics of this type of reservoir are unclear,the description technique is not mature. Therefore,it is necessary to carry out systematic study on the periods and distribution characteristics of the glutenite fans. Guided by sedimentology and sequence stratigraphy,and based on seismic sedimentology,three sedimentary sequences were divided for the conglomerate in the area through seismic and drilling data. According to the analysis of core,logging,and seismic date,the characteristics of upper fan,mid fan,lower fan are clarified. By seismic phase analysis and wave impedance inversion technique,the spatial distribution range of each sub-phase is determined,researches shows the mid fan is a favorable face belt for reservoir development. It is of great significance to guide the exploration and development of glutenite reservoir in oil field.
引文
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10张田,陈恭洋,罗迎春,等.长川西坳陷中段侏罗系蓬莱镇组沉积相展布及演化[J].科学技术与工程,2017,17(14):206-209Zhang Tian,Chen Gongyang,Luo Yingchun,et al.The sedimentary facies distribution and evolution of penglaizhen in the middle Jurassic strata of Western Sichuan Depression[J].Science Technology and Engineering,2017,17(14):206-209
2束宁凯,汪新文.砂砾岩储层期次划分及连通模式[J].油气地质与采收率,2016,23(4):59-63Shu Ningkai,Wang Xinwen.Sedimentary sequence classification and connectivity patternof conglomerate reservoir[J]Petroleum Geology and Recovery Efficiency,2016,23(4):59-63
3孔凡仙.东营凹陷北带砂砾岩扇体勘探技术与实践[J].石油学报,2000,21(5):27-31Kong Fanxian.Exploration technique and practice of sandy-conglomeratic fans in the northern part of Dongying Depression[J].Acta Petrolei Sinica,2000,21(5):27-31
4鄢继华,陈世悦,姜在兴.东营凹陷北部陡坡带近岸水下扇沉积特征[J].石油大学学报(自然科学版),2005,29(1):12-16Yan Jihua,Chen Shiyue,Jiang Zaixing.Sedimentary characteristics of nearshore subaqueous fans in steep slope of Dongying Depression[J].Journal of the University of PetroleumChina(Edition of Natural Science),2005,29(1):12-16
5李存磊,张金亮,宋明水,等.基于沉积相反演的砂砾岩体沉积期次精细划分与对比---以东营凹陷盐家地区古近系沙四段上亚段为例[J].地质学报,2011,85(6):1008-1018Li Cunlei,Zhang Jinliang,Song Mingshui,et al.Fine division and correlation of glutenite sedimentary periods based on sedimentary facies inversion:a case study from the Paleogene strata of upper Es4inthe Yanjia area,Dongying depression[J].Acta Geologica Sinica,2011,85(6):1008-1018
6初丽兰,纪友亮,张瑞峰,等.饶阳凹陷马西地区近岸水下扇沉积特征及含油性[J].石油地质与工程,2009,23(3):16-19,22Chu Lilan,Ji Youliang,Zhang Ruifeng,et al.Sedimentary characteristics and oil-bearing feature of nearshore subaqueous fan at Maxi Area,Raoyang Depression[J].Petroleum Geology and Engineering,2009,23(3):16-19,22
7郑德顺,周璐,程涌,等.东营凹陷盐家地区沙四上段砂砾岩体储层特征[J].特种油气藏,2013,20(5):24-27Zheng Deshun,Zhou Lu,Cheng Yong,et al.Characteristics of the glutenite reservoir in upper Es4of Yanjia Area in the north steep slope of Dongying Depression[J].Special Oil and Gas Reservoirs,2013,20(5):24-27
8赵澄林,张善文,袁静,等.胜利油区沉积储层与油气[M].北京:石油工业出版社,1999:46-53Zhao Chenglin,Zhang Shanwen,Yuan Jing,et al.Sedimentary reservoir and hydrocarbon accumulation in Shengli Oil Region[M].Beijing:Petroleum Industry Press,1999:46-53
9李胜,李维锋,艾林,等.玛18井区三叠系百口泉组沉积相精细研究及有利储层预测[J].科学技术与工程,2017,17(8):6-13Li Sheng,Li Weifeng,Ai Lin,et al.The thorough study of sedimentary facies and favorable reservoir prediction of triassic Baikouquan formation in Ma 18 well block[J].Science Technology and Engineering,2017,17(8):6-13
10张田,陈恭洋,罗迎春,等.长川西坳陷中段侏罗系蓬莱镇组沉积相展布及演化[J].科学技术与工程,2017,17(14):206-209Zhang Tian,Chen Gongyang,Luo Yingchun,et al.The sedimentary facies distribution and evolution of penglaizhen in the middle Jurassic strata of Western Sichuan Depression[J].Science Technology and Engineering,2017,17(14):206-209