高邮凹陷永安地区岩性圈闭识别  

Lithological trap identification of Yong'an area in Gaoyou Sag

作　　者：刘志敏 杨艳 LIU Zhimin;YANG Yan(Exploration and Development Research Institute of Jiangsu Oilfield,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中石化江苏油田分公司勘探开发研究院,江苏扬州225009

出　　处：《复杂油气藏》2018年第1期27-31,共5页Complex Hydrocarbon Reservoirs

摘　　要：永安地区紧邻高邮凹陷的樊川次凹,成藏条件优越,戴南组二段为主力含油层系,戴一段中下部是隐蔽油藏勘探的主要接替层系。为了提高断层-岩性圈闭识别精度,针对断裂结构复杂、砂体横向变化快等问题,通过属性优选,利用敏感属性刻画控圈断层展布规律,基于地层切片技术开展储层砂体展布特征研究。针对目标块进行含油气性分析,多种方法对比后,具有较高时频分辨率的匹配追踪法油气检测结果与现有油藏分布特征更为吻合。在此认识基础上部署探井YX48井,取得了较好的油气发现,有效推进了樊川次凹隐蔽油藏的挖潜勘探。Yong’an area is close to the Fanchuan Concave of Gaoyou Sag,and has favorable conditions of reservoir formation.The second member of Dainan Formation is the main oil-bearing series,and the lower part of 1st member of Dainan Formation is the main superseded layers for the exploration of subtle reservoir.To improve the precision of trap recognition,aiming at the problems of the complex structure of faults and the rapid lateral variation of sandbodies,through the seismic attribute optimization,the distribution laws of faults controlling traps were described by the sensitive attributes.And then the distribution characteristics of sandbodies were studied by utilizing strata slices.In the targeted area,the oil-gas bearing possibility was analyzed by multiple methods.The comparison results show that the hydrocarbon testing results obtained by the matching pursuit algorithm with higher time-frequency resolution are consistent with the distribution characteristics of discovered reservoirs.On the basis,an exploratory well YX48 was deployed in oil-gas favorable area.After drilling,good hydrocarbon discovery was obtained.So this promotes effectively the further exploration of subtle reservoirs in Fanchuan Concave.

关 键 词：属性优选 断裂刻画 砂体展布 匹配追踪 油气检测 

分 类 号：TE121[石油与天然气工程—油气勘探]