高石梯—磨溪地区寒武系储层主控因素的地震地层学解释
|
摘要
四川盆地高石梯—磨溪地区寒武系发育颗粒滩白云岩储层,具有良好的天然气勘探前景。为了确定优质储层分布范围,通过地震地层学解释,利用钻井和地震资料将龙王庙组—洗象池群划分为4个四级层序,标定了4个海平面升降变化旋回;结合最大波峰振幅属性和地层厚度,认为颗粒滩白云岩储层受海平面变化和古地貌的双重控制。其中,颗粒滩白云岩储集层发育受四级海平面下降期的控制,呈带状展布,优质储集层发育在层序上超位置附近,近岸古地貌微幅度变化进一步影响储集层物性,局部古地貌高部位储层物性更为优越。地震地层学解释可以确定颗粒滩白云岩优质储集层发育区,并将对下一步该区具备相似成藏条件的奥陶系储层研究提供参考。
Grain-beach-dolomite reservoirs developed in the Cambrian of Gaoshiti-Moxi Area in Sichuan Basin have a good gas prospect.In order to determine the distribution range of high-quality reservoirs,the Longwangmiao Formation-Xixiangchi Group are divided into four fourth grade sequences based on drilling and seismic data with the seismic stratigraphy interpretation,and four cycles of sealevel rise and fall changes are calibrated.Combined with maximum peak-amplitude attributes and formation thickness,it is considered that grain-beachdolomite reservoirs are controlled by sea level changes and paleo-geomorphology.Among them,the development of grain-beach-dolomite reservoirs is controlled by the fourth grade of sea level fall,with a belt-like distribution.High-quality reservoirs developed near the onlapping of sequences,and the paleo-geomorphological micro-relief variation in the near shore had more influences on reservoir physical properties.Higher positions of local paleo-geomorphology have better reservoir physical properties.The seismic stratigraphy interpretation can confirm development areas of high-quality grain-beach-dolomite reservoirs and is useful for the study of Ordovician reservoirs with similar reservoir conditions in the area.
Grain-beach-dolomite reservoirs developed in the Cambrian of Gaoshiti-Moxi Area in Sichuan Basin have a good gas prospect.In order to determine the distribution range of high-quality reservoirs,the Longwangmiao Formation-Xixiangchi Group are divided into four fourth grade sequences based on drilling and seismic data with the seismic stratigraphy interpretation,and four cycles of sealevel rise and fall changes are calibrated.Combined with maximum peak-amplitude attributes and formation thickness,it is considered that grain-beachdolomite reservoirs are controlled by sea level changes and paleo-geomorphology.Among them,the development of grain-beach-dolomite reservoirs is controlled by the fourth grade of sea level fall,with a belt-like distribution.High-quality reservoirs developed near the onlapping of sequences,and the paleo-geomorphological micro-relief variation in the near shore had more influences on reservoir physical properties.Higher positions of local paleo-geomorphology have better reservoir physical properties.The seismic stratigraphy interpretation can confirm development areas of high-quality grain-beach-dolomite reservoirs and is useful for the study of Ordovician reservoirs with similar reservoir conditions in the area.
引文
[1] 杜金虎,邹才能,徐春春,等.川中古隆起龙王庙组特大型气田战略发现与理论技术创新[J].石油勘探与开发,2014,41(3):268-277.DU Jinhu,ZOU Caineng,XU Chunchun,et al.Theoretical and technical innovations in strategic discovery of a giant gas field in Cambrian Longwangmiao Formation of central Sichuan Paleo-Uplift,Sichuan Basin[J].Petroleum Exploration and Development,2014,41(3):268-277.
[2] 赵文智,沈安江,胡素云,等.中国碳酸盐岩储集层大型化发育的地质条件与分布特征[J].石油勘探与开发,2012,39(1):1-12.ZHAO Wenzhi,SHEN Anjiang,HU Suyun,et al.Geological conditions and distributional features of large-scale carbonate reservoirs onshore China[J].Petroleum Exploration and Development,2012,39(1):1-12.
[3] 万晶,孙玉朋.颗粒滩相碳酸盐岩储集层发育演化的主控因素[J].断块油气田,2009,16(4):60-62.WAN Jing,SUN Yupeng.Analysis of main controlling factors of formation evolution in grain-beach carbonate reservoir[J].Fault-Block Oil & Gas Field,2009,16(4):60-62.
[4] 姚根顺,周进高,邹伟宏,等.四川盆地下寒武统龙王庙组颗粒滩特征及分布规律[J].海相油气地质,2013,8(4):1-8.YAO Genshun,ZHOU Jin’gao,ZOU Weihong,et al.Characteristics and distribution rule of lower Cambrian Longwangmiao grain beach in Sichuan Basin[J].Marine Origin Petroleum Geology,2013,8(4):1-8.
[5] 何永,王英民,许翠霞,等.生物礁、滩、灰泥丘沉积特征及地震识别[J].石油地球物理勘探,2014,49(5):971-984.HE Yong,WANG Yingmin,XU Cuixia,et al.Sedimentary characteristics of reef,shoal and lime mud mound,and their seismic identification[J].Oil Geophysical Prospecting,2014,49(5):971-984.
[6] L F 布朗,W L 费歇尔著,曾洪流等译.地震地层学解释与石油勘探[M].北京:石油工业出版社,1988.
[7] 吴晓川,蒲仁海,张功成,等.琼东南盆地南部深水区碳酸盐岩台地的地震解释[J].石油地球物理勘探,2017,52(2):381-391.WU Xiaochuan,PU Renhai,ZHANG Gongcheng,et al.Seismic interpretation of carbonate platform in the southern deepwater area,Qiongdongnan Basin[J].Oil Geophysical Prospecting,2017,52(2):381-391.
[8] 李玉存,李君,孙明,等.地震解释技术在高北斜坡带中深层岩性圈闭评价中的应用[J].石油地球物理勘探,2017,52(增刊1):207-213.LI Yucun,LI Jun,SUN Ming,et al.Seismic interpretation techniques for middle and deep lithologic trap evaluation in Gaobei Slope[J].Oil Geophysical Prospecting,2017,52(S1):207-213.
[9] 乐靖,王晖,范廷恩,等.基于地震等时格架的倾角导向储层静态建模方法[J].石油物探,2017,56(3):449-458.LE Jing,WANG Hui,FAN Ting’en,et al.A method of dip steering reservoir static modeling based on seismic isochronal stratigraphic framework[J].Geophysical Prospecting for Petroleum,2017,56(3):449-458.
[10] 四川油气区石油地质编写组.中国石油地质志(卷10):四川油气区[M].北京:石油工业出版社,1989.
[11] 汪泽成,赵文智,张林,等.四川盆地构造层序与天然气勘探[M].北京:地质出版社,2002.WANG Zecheng,ZHAO Wenzhi,ZHANG Lin,et al.Structural Sequence and Natural Gas Exploration in Sichuan Basin[M].Geological Press,Beijing,2002.
[12] 袁玉松,孔冬胜,李双建,等.四川盆地加里东期剥蚀量恢复[J].地质科学,2013,48(3):581-591.YUAN Yusong,KONG Dongsheng,LI Shuangjian,et al.Caledonian erosion thickness reconstruction in the Sichuan Basin[J].Chinese Journal of Geology,2013,48(3):581-591.
[13] 张满郎,谢增业,李熙喆,等.四川盆地寒武纪岩相古地理特征[J].沉积学报,2010,28(1):128-139.ZHANG Manlang,XIE Zenye,LI Xizhe,et al.Characteristics of lithofacies paleogeography of Cambrian in Sichuan Basin[J].Acta Sedimentologica Sinica,2010,28(1):128-139.
[14] 李伟,余华琪,邓鸿斌.四川盆地中南部寒武系地层划分对比与沉积演化特征[J].石油勘探与开发,2012,39(6):681-690.LI Wei,YU Huaqi,DENG Hongbin.Stratigraphic division and correlation and sedimentary characteristics of the Cambrian in central-southern Sichuan Basin[J].Petroleum Exploration and Development,2012,39(6):681-690.
[15] 李凌,谭秀成,夏吉文,等.海平面升降对威远寒武系滩相储集层的影响[J].天然气工业,2008,28(4):19-22.LI Ling,TAN Xiucheng,XIA Jiwen,et al.Influences of eustatic movement on the Cambrian reservoirs of bank facies in Weiyuan Gas Field,Sichuan Basin[J].Natural Gas Industry,2008,28(4):19-22.
[16] 王治国,尹成.地震地貌学的发展及应用前景[J].石油地球物理勘探,2014,49(2):410-420.WANG Zhiguo,YIN Cheng.Progress and prospects of seismic geomorphology[J].Oil Geophysical Pro-specting,2014,49(2):410-420.
[17] 喻林,何燕,陈红,等.基于古地貌恢复的湖相碳酸盐岩沉积模式研究[J].石油地球物理勘探,2016,51(增刊1):126-130.YU Lin,HE Yan,CHEN Hong,et al.Analysis of lacustrine carbonate sedimentary patterns based on paleo-geomorphic restoration[J].Oil Geophysical Pro-specting,2016,51(S1):126-130.
[18] Vail P R,Mitchum R M,Thompson S.Seismic stratigraphy and global changes of sea level,Part 3:relative changes of sea level from coastal//Onlap Seismic Stratigraphy Applications to Hydrocarbon Exploration[M].AAPG Memoir,1977,26,63-81.
[19] 陈茂山.地震地层体及其分析方法[J].石油地球物理勘探,2014,49(5):1020-1026.CHEN Maoshan.Seismic stratigraphic volume and its analysis method[J].Oil Geophysical Prospecting,2014,49(5):1020-1026.
[20] 陈文浩,王志章,候加根,等.地层切片技术在沉积相研究中的应用探讨[J].石油地球物理勘探,2015,50(5):1007-1015.CHEN Wenhao,WANG Zhizhang,HOU Jiagen,et al.Strata slices in sedimentary facies research[J].Oil Geophysical Prospecting,2015,50(5):1007-1015.
[2] 赵文智,沈安江,胡素云,等.中国碳酸盐岩储集层大型化发育的地质条件与分布特征[J].石油勘探与开发,2012,39(1):1-12.ZHAO Wenzhi,SHEN Anjiang,HU Suyun,et al.Geological conditions and distributional features of large-scale carbonate reservoirs onshore China[J].Petroleum Exploration and Development,2012,39(1):1-12.
[3] 万晶,孙玉朋.颗粒滩相碳酸盐岩储集层发育演化的主控因素[J].断块油气田,2009,16(4):60-62.WAN Jing,SUN Yupeng.Analysis of main controlling factors of formation evolution in grain-beach carbonate reservoir[J].Fault-Block Oil & Gas Field,2009,16(4):60-62.
[4] 姚根顺,周进高,邹伟宏,等.四川盆地下寒武统龙王庙组颗粒滩特征及分布规律[J].海相油气地质,2013,8(4):1-8.YAO Genshun,ZHOU Jin’gao,ZOU Weihong,et al.Characteristics and distribution rule of lower Cambrian Longwangmiao grain beach in Sichuan Basin[J].Marine Origin Petroleum Geology,2013,8(4):1-8.
[5] 何永,王英民,许翠霞,等.生物礁、滩、灰泥丘沉积特征及地震识别[J].石油地球物理勘探,2014,49(5):971-984.HE Yong,WANG Yingmin,XU Cuixia,et al.Sedimentary characteristics of reef,shoal and lime mud mound,and their seismic identification[J].Oil Geophysical Prospecting,2014,49(5):971-984.
[6] L F 布朗,W L 费歇尔著,曾洪流等译.地震地层学解释与石油勘探[M].北京:石油工业出版社,1988.
[7] 吴晓川,蒲仁海,张功成,等.琼东南盆地南部深水区碳酸盐岩台地的地震解释[J].石油地球物理勘探,2017,52(2):381-391.WU Xiaochuan,PU Renhai,ZHANG Gongcheng,et al.Seismic interpretation of carbonate platform in the southern deepwater area,Qiongdongnan Basin[J].Oil Geophysical Prospecting,2017,52(2):381-391.
[8] 李玉存,李君,孙明,等.地震解释技术在高北斜坡带中深层岩性圈闭评价中的应用[J].石油地球物理勘探,2017,52(增刊1):207-213.LI Yucun,LI Jun,SUN Ming,et al.Seismic interpretation techniques for middle and deep lithologic trap evaluation in Gaobei Slope[J].Oil Geophysical Prospecting,2017,52(S1):207-213.
[9] 乐靖,王晖,范廷恩,等.基于地震等时格架的倾角导向储层静态建模方法[J].石油物探,2017,56(3):449-458.LE Jing,WANG Hui,FAN Ting’en,et al.A method of dip steering reservoir static modeling based on seismic isochronal stratigraphic framework[J].Geophysical Prospecting for Petroleum,2017,56(3):449-458.
[10] 四川油气区石油地质编写组.中国石油地质志(卷10):四川油气区[M].北京:石油工业出版社,1989.
[11] 汪泽成,赵文智,张林,等.四川盆地构造层序与天然气勘探[M].北京:地质出版社,2002.WANG Zecheng,ZHAO Wenzhi,ZHANG Lin,et al.Structural Sequence and Natural Gas Exploration in Sichuan Basin[M].Geological Press,Beijing,2002.
[12] 袁玉松,孔冬胜,李双建,等.四川盆地加里东期剥蚀量恢复[J].地质科学,2013,48(3):581-591.YUAN Yusong,KONG Dongsheng,LI Shuangjian,et al.Caledonian erosion thickness reconstruction in the Sichuan Basin[J].Chinese Journal of Geology,2013,48(3):581-591.
[13] 张满郎,谢增业,李熙喆,等.四川盆地寒武纪岩相古地理特征[J].沉积学报,2010,28(1):128-139.ZHANG Manlang,XIE Zenye,LI Xizhe,et al.Characteristics of lithofacies paleogeography of Cambrian in Sichuan Basin[J].Acta Sedimentologica Sinica,2010,28(1):128-139.
[14] 李伟,余华琪,邓鸿斌.四川盆地中南部寒武系地层划分对比与沉积演化特征[J].石油勘探与开发,2012,39(6):681-690.LI Wei,YU Huaqi,DENG Hongbin.Stratigraphic division and correlation and sedimentary characteristics of the Cambrian in central-southern Sichuan Basin[J].Petroleum Exploration and Development,2012,39(6):681-690.
[15] 李凌,谭秀成,夏吉文,等.海平面升降对威远寒武系滩相储集层的影响[J].天然气工业,2008,28(4):19-22.LI Ling,TAN Xiucheng,XIA Jiwen,et al.Influences of eustatic movement on the Cambrian reservoirs of bank facies in Weiyuan Gas Field,Sichuan Basin[J].Natural Gas Industry,2008,28(4):19-22.
[16] 王治国,尹成.地震地貌学的发展及应用前景[J].石油地球物理勘探,2014,49(2):410-420.WANG Zhiguo,YIN Cheng.Progress and prospects of seismic geomorphology[J].Oil Geophysical Pro-specting,2014,49(2):410-420.
[17] 喻林,何燕,陈红,等.基于古地貌恢复的湖相碳酸盐岩沉积模式研究[J].石油地球物理勘探,2016,51(增刊1):126-130.YU Lin,HE Yan,CHEN Hong,et al.Analysis of lacustrine carbonate sedimentary patterns based on paleo-geomorphic restoration[J].Oil Geophysical Pro-specting,2016,51(S1):126-130.
[18] Vail P R,Mitchum R M,Thompson S.Seismic stratigraphy and global changes of sea level,Part 3:relative changes of sea level from coastal//Onlap Seismic Stratigraphy Applications to Hydrocarbon Exploration[M].AAPG Memoir,1977,26,63-81.
[19] 陈茂山.地震地层体及其分析方法[J].石油地球物理勘探,2014,49(5):1020-1026.CHEN Maoshan.Seismic stratigraphic volume and its analysis method[J].Oil Geophysical Prospecting,2014,49(5):1020-1026.
[20] 陈文浩,王志章,候加根,等.地层切片技术在沉积相研究中的应用探讨[J].石油地球物理勘探,2015,50(5):1007-1015.CHEN Wenhao,WANG Zhizhang,HOU Jiagen,et al.Strata slices in sedimentary facies research[J].Oil Geophysical Prospecting,2015,50(5):1007-1015.