巴西桑托斯盆地A区块Barra Velha组古地貌及其对储层的控制
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摘要
Barra Velha组为研究区主力含油层位,区域古地貌控制了沉积相带和储层的分布。同时,古地貌的起伏影响同生期的成岩作用,也间接控制了储层的品质。通过岩心、测井和地震资料综合分析,综合利用印模法、残余厚度法,结合压实校正进行不同岩性的厚度恢复,对目标区块Barra Velha组沉积期的古地貌进行恢复,平面上将古地貌划分为古构造深水区、古构造斜坡—洼地区、古构造次高地及古构造高地。在古地貌的平面分区特征分析的基础上,结合沉积特征和同生期的暴露环境,进行沉积和储层研究,识别研究区优质储层发育区。
The Barra Velha Formation is the main oil-bearing zone in the Santos Basin of Brazil.Paleogeomorphology controls the distribution of sedimentary facies and reservoirs,in addition to early diagenesis,that result in variation in reservoir types and quality.Comprehensive studies have been carried out based on well data,core data,well log data and seismic data by using imprinting method,residual thickness method,combined with compaction correction to reconstruct the paleogeomorphology of Bara Velha Formation.Four zones are recognized in the target area,i.e.deep water zone,slope and low structure zone,sub-high structure zone and high structure zone.The zones of high quality reservoir are recognized by the paleogeomorphology features,sedimentary facies and exposure environment.
The Barra Velha Formation is the main oil-bearing zone in the Santos Basin of Brazil.Paleogeomorphology controls the distribution of sedimentary facies and reservoirs,in addition to early diagenesis,that result in variation in reservoir types and quality.Comprehensive studies have been carried out based on well data,core data,well log data and seismic data by using imprinting method,residual thickness method,combined with compaction correction to reconstruct the paleogeomorphology of Bara Velha Formation.Four zones are recognized in the target area,i.e.deep water zone,slope and low structure zone,sub-high structure zone and high structure zone.The zones of high quality reservoir are recognized by the paleogeomorphology features,sedimentary facies and exposure environment.
引文
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[20]吴丽艳,陈春强,江春明,等.浅谈我国油气勘探中的古地貌恢复技术[J].石油天然气学报,2005,27(4):559-586.
[21]谭秀成,聂勇,刘宏,等.陆表海碳酸盐岩台地沉积微地貌恢复方法研究[J].沉积学报,2011,29(3):486-494.
[2]张义楷,王志松,史长林,等.伊拉克米桑油田碳酸盐岩储层成岩作用[J].科学技术与工程,2016,30(2):45-53.
[3]刘小平,孙东胜,吴欣松.古岩溶地貌及其对岩溶储层的控制---以塔里木盆地轮古西地区奥陶系为例[J].石油实验地质,2007,29(3):265-268.
[4]陈景山,李忠,王振宇,等.塔里木盆地奥陶系碳酸盐岩古岩溶作用与储层分布[J].沉积学报,2007,25(6):858-868.
[5]韦红,赵海峰,唐何兵,等.渤海盆地潜山下古生界岩溶古地貌特征分析---以W油气田为例[J].非常规油气,2016,3(6):31-35.
[6]高艺,姜在兴,李俊杰,等.古地貌恢复及其对滩坝沉积的控制作用---以辽河西部凹陷曙北地区沙四段为例[J].油气地质与采收率,2015,22(5):40-46.
[7]王高平,王震亮,赵雪娇,等.鄂尔多斯盆地延安地区奥陶系风化壳古地貌恢复[J].沉积学报,2013,31(4):563-570.
[8]陈强路,钱一雄,马红强,等.塔里木盆地塔河油田奥陶系碳酸盐岩成岩作用与孔隙演化[J].石油实验地质,2003,25(6):729-734.
[9]马伯永,王根厚,李尚林,等.羌塘盆地东缘中侏罗统布曲组碳酸盐岩成岩作用与成岩环境[J].沉积与特提斯地质,2010,30(2):11-18.
[10]高计县,田昌炳,张为民,等.伊拉克鲁迈拉油田Mishrif组碳酸盐岩储层特征及成因[J].石油学报,2013,34(5):845-851.
[11]曾云贤,刘微,杨雨.罗家寨西南地区飞仙关早期沉积古地貌研究[J].西南石油大学学报,2007,29(1):10-11.
[12]邹才能,张光亚,陶士振,等.全球油气勘探领域地质特征、重大发现及非常规石油地质[J].石油勘探与开发,2010,37(2):129-145.
[13]马中振.典型大西洋型深水盆地油气地质特征及勘探潜力:以巴西桑托斯盆地为例[J].中南大学学报:自然科学版,2013,44(3):1389-1396.
[14]汪新伟,邬长武,郭永强,等.巴西桑托斯盆地卢拉油田成藏特征及对盐下勘探的启迪[J].中国石油勘探,2013,18(3):61-69.
[15]陶崇智,邓超,白国平,等.巴西坎波斯盆地和桑托斯盆地油气分布差异及主控因素[J].吉林大学学报:地球科学版,2013,43(6):1753-1761.
[16]Christopher J M,Eugene R B.Postrift sequence stratigraphy,paleogeography,and fill history of the deep-water Santos Basin,offshore southeast Brazil[J].AAPG Bulletin,2004,88(7):923-945.
[17]Harrington H J.Paleogeographic development of South America[J].AAPG Bulletin,1962,46(10):1773-1814.
[18]Peter R C,Kristian E M,Mount V S.Reactivation of anobliquely rifted margin,Campos and Santos basins,southeastern Brazil[J].AAPG Bulletin,2001,85(11):1925-1944.
[19]赵永刚,王东旭,冯强汉,等.油气田古地貌恢复方法研究进展[J].科学技术与环境学报,2017,39(4):516-529.
[20]吴丽艳,陈春强,江春明,等.浅谈我国油气勘探中的古地貌恢复技术[J].石油天然气学报,2005,27(4):559-586.
[21]谭秀成,聂勇,刘宏,等.陆表海碳酸盐岩台地沉积微地貌恢复方法研究[J].沉积学报,2011,29(3):486-494.