安塞油田化子坪油区长6测井沉积微相研究
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摘要
化子坪油区延长组长6油层是鄂尔多斯盆地安塞地区的主力产油层,为了为下一步勘探开发提供有力支持,有必要对主力产油层沉积相进行精细刻画。通过对研究区取心井岩心的观察和测井资料的数字化处理,在分析储层岩性、沉积构造及粒度分布特征的基础上,得出长6期发育三角洲前缘水下分流河道砂体沉积,进一步细分为水下分流河道、河口坝、水下决口扇、水下分流间湾、水下天然堤及前缘席状砂六种沉积微相,并建立测井沉积微相。在此基础上结合沉积相研究分析了油藏成藏的主控因素,为有利含油区预测和下一步勘探提供方向性的科学依据。
The Chang 6 reservoir of the Yanchang Formation in Huaziping Oil District is the main oil production formation in the Ansai area of the Ordos Basin. To provide strong support for the next exploration and development, it is necessary to finely characterize the sedimentary facies of Chang 6. By observing the cores of the core wells in the study area and digitizing the logging data, based on the analysis of reservoir lithology, sedimentary structure and grain size distribution characteristics, the main conclusion obtained that an underwater distributary channel sand body of delta front in the Chang 6 period. Sedimentation is further subdivided into six sedimentary microfacies, namely submarine distributary channels, estuary dams, underwater breaching fans, underwater sub-flow bays, submerged natural dikes and leading edge litter sands, and well logging microfacies are established. Based on this, we analyzed the main controlling factors of reservoir accumulation in combination with sedimentary facies research, and provided scientific guidance for favorable prediction of oil-bearing areas and exploration in the next step.
The Chang 6 reservoir of the Yanchang Formation in Huaziping Oil District is the main oil production formation in the Ansai area of the Ordos Basin. To provide strong support for the next exploration and development, it is necessary to finely characterize the sedimentary facies of Chang 6. By observing the cores of the core wells in the study area and digitizing the logging data, based on the analysis of reservoir lithology, sedimentary structure and grain size distribution characteristics, the main conclusion obtained that an underwater distributary channel sand body of delta front in the Chang 6 period. Sedimentation is further subdivided into six sedimentary microfacies, namely submarine distributary channels, estuary dams, underwater breaching fans, underwater sub-flow bays, submerged natural dikes and leading edge litter sands, and well logging microfacies are established. Based on this, we analyzed the main controlling factors of reservoir accumulation in combination with sedimentary facies research, and provided scientific guidance for favorable prediction of oil-bearing areas and exploration in the next step.
引文
[1]付金华、郭正权、邓秀芹,鄂尔多斯盆地西南地区上三叠统延长组沉积相及石油地质意义[J],古地理学报, 2005, 7(1):34-44.
[2]赵虹、党、靳文奇等,安塞油田长6油层组精细地层划分与对比[J],西北大学学报(自然科学版),2004(04):461-464.
[3]宋秋强、张占松、张冲等,测井相-岩相分析技术在复杂岩性中的应用[J],石油天然气学报, 2013, 35(7):78-81.
[4]党、赵虹、李文厚等,安塞油田延长组长6油层组沉积微相特征[J],天然气地球科学, 2004, 15(6):597-600.
[5]郑艳荣、屈红军、冯杨伟、王云、王力、李敏,安塞油田H区长6油层组储层微观孔隙结构特征[J],岩性油气藏,2011,23(05):28-32.
[6]李佳鸿、宋新民、王友净等,安塞油田王窑老区特低渗透油藏储层厚砂体精细解剖[J],地质科技情报,2014,33(01):129-136.
[7]武富礼、李文厚、李玉宏等,鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J],古地理学报,2004, 6(3):307-315.
[8]郭艳琴、李文厚、陈全红等,安塞油田上三叠统延长组长6油藏储集因素[J],西北大学学报(自然科学版),2006(04):639-642.
[9]李爱荣、王维喜、武富礼等,鄂尔多斯盆地延安三角洲长4+5和长6油气聚集模式[J],石油与天然气地质,2013,34(05):667-671.
[10]白玉彬、赵靖舟、方朝强等,鄂尔多斯盆地长6油层组准连续型致密砂岩油藏形成机理[J],石油实验地质,2013,35(01):65-71.
[11]胡春花、屈红军、苗建宇等,南泥湾长6油层组沉积微相及含油性研究[J],西北大学学报:自然科学版, 2008, 38(6):994-1000.
[12]侯明才、李旭、邓敏,鄂尔多斯盆地环县地区三叠系长8-长6油层组沉积相特征[J],成都理工大学学报(自然科学版),2011,38(03):241-248.
[2]赵虹、党、靳文奇等,安塞油田长6油层组精细地层划分与对比[J],西北大学学报(自然科学版),2004(04):461-464.
[3]宋秋强、张占松、张冲等,测井相-岩相分析技术在复杂岩性中的应用[J],石油天然气学报, 2013, 35(7):78-81.
[4]党、赵虹、李文厚等,安塞油田延长组长6油层组沉积微相特征[J],天然气地球科学, 2004, 15(6):597-600.
[5]郑艳荣、屈红军、冯杨伟、王云、王力、李敏,安塞油田H区长6油层组储层微观孔隙结构特征[J],岩性油气藏,2011,23(05):28-32.
[6]李佳鸿、宋新民、王友净等,安塞油田王窑老区特低渗透油藏储层厚砂体精细解剖[J],地质科技情报,2014,33(01):129-136.
[7]武富礼、李文厚、李玉宏等,鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J],古地理学报,2004, 6(3):307-315.
[8]郭艳琴、李文厚、陈全红等,安塞油田上三叠统延长组长6油藏储集因素[J],西北大学学报(自然科学版),2006(04):639-642.
[9]李爱荣、王维喜、武富礼等,鄂尔多斯盆地延安三角洲长4+5和长6油气聚集模式[J],石油与天然气地质,2013,34(05):667-671.
[10]白玉彬、赵靖舟、方朝强等,鄂尔多斯盆地长6油层组准连续型致密砂岩油藏形成机理[J],石油实验地质,2013,35(01):65-71.
[11]胡春花、屈红军、苗建宇等,南泥湾长6油层组沉积微相及含油性研究[J],西北大学学报:自然科学版, 2008, 38(6):994-1000.
[12]侯明才、李旭、邓敏,鄂尔多斯盆地环县地区三叠系长8-长6油层组沉积相特征[J],成都理工大学学报(自然科学版),2011,38(03):241-248.