四川盆地须三段低孔渗储层稳产主控因素及其地震响应特征
|
摘要
三叠系须家河组砂砾岩储层是四川盆地重要产气层系,近期多口探井在川西地区须家河组须三段获高产油气,揭示须三段砂砾岩具有较好的勘探潜力,但开发井稳产效果较差。为明确须三段稳产、高产的主控因素,落实富气区块,以高品质三维地震数据为基础,精细对比高产井、失利井、稳产井的地震响应特征,结合钻、测井资料,开展孔隙度反演和曲率等地震属性分析,明确了"具有一定连通空间规模(厚度、面积)的储层是稳产的基础,微断裂发育程度是高产的关键"的认识,有效地指导了后续勘探开发。对川西地区须三段井位部署具有重要意义,在对四川盆地其他低孔渗储层进行评价时也可以借鉴推广。
Sandy conglomerate reservoirs of Xujiahe Trias Formation are important gas-producing beds in the Sichuan Basin.Recently,a few exploration wells have obtained high-yield oil and gas in Xujiahe Formation in Western Sichuan,which reveals that sandy conglomerates of Xujiahe Formation have good exploration potential.However development well production is not stable.So we work on the main control factors of the third member of Xujiahe Formation.First we make the comparison of seismic response characteristics of high-yield wells,failure wells,and stable-production wells based on high-quality 3 Dseismic data.Then combined with drilling and logging data,seismic attribute analysis is carried out such as porosity inversion and curvature.It is clear that a certain connected space scale(thickness and area)in reservoirs is the basis of stable production and the development degree of subtle faults is the key of high production,which guides the subsequent exploration and development effectively.This observation has important practical significance for well location deployment of the third members of Xujiahe Formation in Western Sichuan,and it is also worth learning and popularizing for other low porosity and permeability reservoir evaluation in Sichuan Basin.
Sandy conglomerate reservoirs of Xujiahe Trias Formation are important gas-producing beds in the Sichuan Basin.Recently,a few exploration wells have obtained high-yield oil and gas in Xujiahe Formation in Western Sichuan,which reveals that sandy conglomerates of Xujiahe Formation have good exploration potential.However development well production is not stable.So we work on the main control factors of the third member of Xujiahe Formation.First we make the comparison of seismic response characteristics of high-yield wells,failure wells,and stable-production wells based on high-quality 3 Dseismic data.Then combined with drilling and logging data,seismic attribute analysis is carried out such as porosity inversion and curvature.It is clear that a certain connected space scale(thickness and area)in reservoirs is the basis of stable production and the development degree of subtle faults is the key of high production,which guides the subsequent exploration and development effectively.This observation has important practical significance for well location deployment of the third members of Xujiahe Formation in Western Sichuan,and it is also worth learning and popularizing for other low porosity and permeability reservoir evaluation in Sichuan Basin.
引文
[1] 陈昭国,曾凝.前陆盆地概述及其与油气关系——兼论四川前陆盆地的形成[J].四川地质学报,1996,16(3):219-223.CHEN Zhaoguo,ZENG Ning.Foreland Basin and its relationship with oil and gas:On formation of Sichuan foreland basin[J].Acta Geological Sichuan,1996,16(3):219-223.
[2] 毛琼,邹光富,张洪茂,等.四川盆地动力学演化与油气前景探讨[J].天然气工业,2006,26(11):7-10.MAO Qiong,ZOU Guangfu,ZHANG Hongmao,et al.Mechanism of gas reservoiring in Xujiahe formation in central Sichuan basin[J].Natual Gas Industry,2006,26(11):7-10.
[3] 雍自权,刘庆松,李倩.川西前陆盆地的发展演化、地层充填及其对油气成藏的意义[J].天然气工业,2008,28(2):26-29.YONG Ziquan,LIU Qingsong,LI Qian.Evolutionand sediment filling of western Sichuan foreland basin and their significance of hydrocarbon accumulation[J].Natural Gas Industry,2008,28(2):26-29.
[4] 孙红杰.川中地区上三叠统须家河组二、四段储层特征研究[D].四川成都:成都理工大学,2007.SUN Hongjie.Characteristics of Reservior in the Se-cond and Fourth Members of Xujiahe Formation in the Upper Triassic of Sichuan Central Area[D].Chengdu University of Technology,Chengdu,Sichuan,2007.
[5] 杨威,魏国齐,李跃纲,等.川西地区须家河组二段成岩作用及其对储层发育的影响[J].天然气地球科学,2008,19(2):188-192.YANG Wei,WEI Guoqi,LI Yuegang,et al.Diagenesis of second member reservoir of Xujiahe formation and its influence on the reservoir development,western Sichuan[J].Natural Gas Geoscience,2008,19(2):188-192.
[6] 谢继容,李国辉,罗凤姿.四川盆地上三叠统须家河组储集特征[J].成都理工大学学报:自然科学版,2009,36(1):13-18.XIE Jirong,LI Guohui,LUO Fengzi.Reservoir chara-cteristics of the Upper Triassic Xujiahe Formation in Sichuan Basin,China[J].Journal of Chengdu University of Technology(Science & Technology Edition),2009,36(1):13-18.
[7] 吕正祥.川西孝泉构造上三叠统超致密储层演化特征[J].成都理工大学学报:自然科学版,2005,32(1):22-30.LYU Zhengxiang.Evolutionary characteristics of Upper Triassic reservoir in Xiaoquan structure in West Sichuan,China[J].Journal of Chengdu University of Technology(Science & Technology Edition),2005,32(1):22-30.
[8] 姜在兴,田继军,陈桂菊,等.川西前陆盆地上三叠统沉积特征[J].古地理学报,2007,9(1):144-152.JIANG Zaixing,TIAN Jijun,CHEN Guiju,et al.Sedimentary characteristics of the Upper Triassic in western Sichuan foreland basin,China[J].Journal of Palaeogeography,2007,9(1):144-152.
[9] 谢继荣,张健,李国辉,等.四川盆地须家河组气藏成藏特点及勘探前景[J].西南石油大学学报,2008,30(6):40-44.XIE Jirong,ZHANG Jian,LI Guohui,et al.Exploration prospect and gas reservoir characteristics of Xujia-he formation in Sichuan Basin[J].Journal of Southwest Petroleum University,2008,30(6):40-44.
[10] 赵文智,王红军,徐春春,等.川中地区须家河组天然气藏大范围成藏机理与富集条件[J].石油勘探与开发,2010,37(2):146-157.ZHAO Wenzhi,WANG Hongjun,XU Chunchun,et al.Reservoir-forming mechanism and enrichment conditions of the extensive Xujiahe formation gas reservoirs,central Sichuan Basin[J].Petroleum Exploration and Development,2010,37(2):146-157.
[11] 纪学武,马文花,臧殿光,等.川西北地区须三段致密砂岩目标评价技术的应用效果[J].石油地球物理勘探,2012,47(增刊1):55-58.JI Xuewu,MA Wenhua,ZANG Dianguang,et al.Application of the evaluation technology of tight sandstone in the third member of Xujia area in northwestern Sichuan[J].Oil Geophysical Prospecting,2012,47(S1):55-58.
[12] 霍丽娜,张建军,郑良合,等.多属性断层解释技术在煤层气储层解释中的应用[J].石油地球物理勘探,2014,49(增刊1):221-227.HUO Lina,ZHANG Jianjun,ZHENG Lianghe,et al.Fault interpretation with multiple attributes in coal-bed methane interpretation[J].Oil Geophysical Pro-specting,2014,49(S1):221-227.
[13] Chopra S,Marfurt K J 著;夏义平,李明杰,张延庆,等译.地震属性在构造和地层学中的应用[M].东方地球物理公司,2008,109-110.
[14] 陆明华,骆璞,姜传芳,等.地震属性技术在页岩裂缝预测中的应用[J].石油天然气学报,2013,35(8):62-64.LU Minghua,LUO Pu,JIANG Chuanfang,et al.Application of seismic attributive analyses in shale fracture prediction[J].Journal of Oil and Gas Technology,2013,35(8):62-64.
[15] 胡伟光.相干体技术在川东北油气勘探中的应用[J].物探化探计算技术,2010,32(3):260-264.HU Weiguang.Application of coherence technology to oil and gas exploration in northeastern Sichuan Ba-sin[J].Computing Techniques for Geophysical andGeochemical Exploration,2010,32(3):260-264.
[16] 王志君,黄军斌﹒利用相干技术和三维可视化技术识别微小断层和砂体[J]﹒石油地球物理勘探,2001,36(3):378-381.WANG Zhijun,HUANG Junbin.Identification of micro-fault and sand body by using coherence technique and 3D visualization[J].Oil Geophysical Prospecting,2001,36(3):378-381.
[17] 张延庆,臧殿光.现代体属性应用研究成果报告[R].东方地球物理公司内部资料,2009.
[18] 周赏,王永莉.小断层综合解释技术及其应用[J].石油地球物理勘探,2012,47(增刊1):50-54.ZHOU Shang,WANG Yongli.Minor fault joint-interpretation[J].Oil Geophysical Prospecting,2012,47(S1):50-54.
[19] 纪学武,彭忻,臧殿光,等.多属性微断裂解释技术[J].石油地球物理勘探,2011,46(增刊1):117-120.JI Xuewu,PENG Xin,ZANG Dianguang,et al.Multi-attribute micro-fracture interpretation technique[J].Oil Geophysical Prospecting,2011,46(S1):117-120.
[20] 丁文龙,许长春,久凯,等.泥页岩裂缝研究进展[J].地球科学进展,2011,26(2):135-144.DING Wenlong,XU Changchun,JIU Kai,et al.The research progress of shale fractures[J].Advances in Earth Science,2011,26(2):135-144.
[2] 毛琼,邹光富,张洪茂,等.四川盆地动力学演化与油气前景探讨[J].天然气工业,2006,26(11):7-10.MAO Qiong,ZOU Guangfu,ZHANG Hongmao,et al.Mechanism of gas reservoiring in Xujiahe formation in central Sichuan basin[J].Natual Gas Industry,2006,26(11):7-10.
[3] 雍自权,刘庆松,李倩.川西前陆盆地的发展演化、地层充填及其对油气成藏的意义[J].天然气工业,2008,28(2):26-29.YONG Ziquan,LIU Qingsong,LI Qian.Evolutionand sediment filling of western Sichuan foreland basin and their significance of hydrocarbon accumulation[J].Natural Gas Industry,2008,28(2):26-29.
[4] 孙红杰.川中地区上三叠统须家河组二、四段储层特征研究[D].四川成都:成都理工大学,2007.SUN Hongjie.Characteristics of Reservior in the Se-cond and Fourth Members of Xujiahe Formation in the Upper Triassic of Sichuan Central Area[D].Chengdu University of Technology,Chengdu,Sichuan,2007.
[5] 杨威,魏国齐,李跃纲,等.川西地区须家河组二段成岩作用及其对储层发育的影响[J].天然气地球科学,2008,19(2):188-192.YANG Wei,WEI Guoqi,LI Yuegang,et al.Diagenesis of second member reservoir of Xujiahe formation and its influence on the reservoir development,western Sichuan[J].Natural Gas Geoscience,2008,19(2):188-192.
[6] 谢继容,李国辉,罗凤姿.四川盆地上三叠统须家河组储集特征[J].成都理工大学学报:自然科学版,2009,36(1):13-18.XIE Jirong,LI Guohui,LUO Fengzi.Reservoir chara-cteristics of the Upper Triassic Xujiahe Formation in Sichuan Basin,China[J].Journal of Chengdu University of Technology(Science & Technology Edition),2009,36(1):13-18.
[7] 吕正祥.川西孝泉构造上三叠统超致密储层演化特征[J].成都理工大学学报:自然科学版,2005,32(1):22-30.LYU Zhengxiang.Evolutionary characteristics of Upper Triassic reservoir in Xiaoquan structure in West Sichuan,China[J].Journal of Chengdu University of Technology(Science & Technology Edition),2005,32(1):22-30.
[8] 姜在兴,田继军,陈桂菊,等.川西前陆盆地上三叠统沉积特征[J].古地理学报,2007,9(1):144-152.JIANG Zaixing,TIAN Jijun,CHEN Guiju,et al.Sedimentary characteristics of the Upper Triassic in western Sichuan foreland basin,China[J].Journal of Palaeogeography,2007,9(1):144-152.
[9] 谢继荣,张健,李国辉,等.四川盆地须家河组气藏成藏特点及勘探前景[J].西南石油大学学报,2008,30(6):40-44.XIE Jirong,ZHANG Jian,LI Guohui,et al.Exploration prospect and gas reservoir characteristics of Xujia-he formation in Sichuan Basin[J].Journal of Southwest Petroleum University,2008,30(6):40-44.
[10] 赵文智,王红军,徐春春,等.川中地区须家河组天然气藏大范围成藏机理与富集条件[J].石油勘探与开发,2010,37(2):146-157.ZHAO Wenzhi,WANG Hongjun,XU Chunchun,et al.Reservoir-forming mechanism and enrichment conditions of the extensive Xujiahe formation gas reservoirs,central Sichuan Basin[J].Petroleum Exploration and Development,2010,37(2):146-157.
[11] 纪学武,马文花,臧殿光,等.川西北地区须三段致密砂岩目标评价技术的应用效果[J].石油地球物理勘探,2012,47(增刊1):55-58.JI Xuewu,MA Wenhua,ZANG Dianguang,et al.Application of the evaluation technology of tight sandstone in the third member of Xujia area in northwestern Sichuan[J].Oil Geophysical Prospecting,2012,47(S1):55-58.
[12] 霍丽娜,张建军,郑良合,等.多属性断层解释技术在煤层气储层解释中的应用[J].石油地球物理勘探,2014,49(增刊1):221-227.HUO Lina,ZHANG Jianjun,ZHENG Lianghe,et al.Fault interpretation with multiple attributes in coal-bed methane interpretation[J].Oil Geophysical Pro-specting,2014,49(S1):221-227.
[13] Chopra S,Marfurt K J 著;夏义平,李明杰,张延庆,等译.地震属性在构造和地层学中的应用[M].东方地球物理公司,2008,109-110.
[14] 陆明华,骆璞,姜传芳,等.地震属性技术在页岩裂缝预测中的应用[J].石油天然气学报,2013,35(8):62-64.LU Minghua,LUO Pu,JIANG Chuanfang,et al.Application of seismic attributive analyses in shale fracture prediction[J].Journal of Oil and Gas Technology,2013,35(8):62-64.
[15] 胡伟光.相干体技术在川东北油气勘探中的应用[J].物探化探计算技术,2010,32(3):260-264.HU Weiguang.Application of coherence technology to oil and gas exploration in northeastern Sichuan Ba-sin[J].Computing Techniques for Geophysical andGeochemical Exploration,2010,32(3):260-264.
[16] 王志君,黄军斌﹒利用相干技术和三维可视化技术识别微小断层和砂体[J]﹒石油地球物理勘探,2001,36(3):378-381.WANG Zhijun,HUANG Junbin.Identification of micro-fault and sand body by using coherence technique and 3D visualization[J].Oil Geophysical Prospecting,2001,36(3):378-381.
[17] 张延庆,臧殿光.现代体属性应用研究成果报告[R].东方地球物理公司内部资料,2009.
[18] 周赏,王永莉.小断层综合解释技术及其应用[J].石油地球物理勘探,2012,47(增刊1):50-54.ZHOU Shang,WANG Yongli.Minor fault joint-interpretation[J].Oil Geophysical Prospecting,2012,47(S1):50-54.
[19] 纪学武,彭忻,臧殿光,等.多属性微断裂解释技术[J].石油地球物理勘探,2011,46(增刊1):117-120.JI Xuewu,PENG Xin,ZANG Dianguang,et al.Multi-attribute micro-fracture interpretation technique[J].Oil Geophysical Prospecting,2011,46(S1):117-120.
[20] 丁文龙,许长春,久凯,等.泥页岩裂缝研究进展[J].地球科学进展,2011,26(2):135-144.DING Wenlong,XU Changchun,JIU Kai,et al.The research progress of shale fractures[J].Advances in Earth Science,2011,26(2):135-144.