基于可钻性分析及三维地质建模的钻探有利区优选:以雄安新区雾迷山组为例  

Favorable Drilling Target Selection Based on Drillability Analysis and 3D Geological Modeling:A Case Study in the Wumishan Formation,Xiong’an New Area

作　　者：鲁锴 刘玲 鲍志东[2] 季汉成[2] 刘金侠[3] 李磊[2] 李晋 鲍逸非[4] 牛博 陈振良 曹瑛倬 陈欣怡 李宗峰 LU Kai;LIU Ling;BAO Zhidong;JI Hancheng;LIU Jinxia;LI Lei;LI Jin;BAO Yifei;NIU Bo;CHEN Zhenliang;CAO Yingzhuo;CHEN Xinyi;LI Zongfeng(Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 102206,China;College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China;SINOPEC Star Petroleum Co.Ltd.,Beijing 100083,China;School of Sciences,Beijing University of Posts and Telecommunications,Beijing 100876,China;College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京102206 [2]中国石油大学(北京)地球科学学院,北京102249 [3]中国石化集团公司新星石油有限责任公司,北京100083 [4]北京邮电大学理学院,北京100876 [5]中国石油大学(北京)石油工程学院,北京102249

出　　处：《现代地质》2023年第5期1398-1410,共13页Geoscience

基　　金：中国科学院A类战略性先导项目“深层海相碳酸盐岩储层发育机理与分布规律”(XDA14010201);国家重点研发计划项目“深部岩溶热储经济高效钻探工艺”(2018YFC0604304)。

摘　　要：针对雄安新区深部雾迷山组白云岩地热储层非均质性强和可钻性差等特点,本文基于丰富的钻井、岩心、薄片和测井解释等数据,建立雄安新区各层系岩性测井解释模型,将雾迷山组岩石类型划分为结晶白云岩、颗粒白云岩、微生物白云岩、硅质白云岩和角砾白云岩5类。结合抗压强度、硬度和研磨性等可钻性参数测定结果,将雾迷山组角砾白云岩和柱状叠层石白云岩的可钻性级别归为易钻级,颗粒白云岩和层纹石的可钻性级别归为中钻级,块状泥晶白云岩和硅质白云岩的可钻性级别划为难钻级。利用地质建模技术,建立雄安新区三维地质模型,从而明确研究区各地层展布、岩性分布和可钻性变化的规律。最终圈定牛驼镇凸起和容城凸起为钻进效率最高、钻井成本最低的钻探靶区,高阳低凸起、同口—雁翎低潜山带、任丘低潜山带、牛北斜坡和蠡县斜坡区域为次有利的潜力钻探靶区,而凹陷区地层钻进难度较大且成本较高,为高风险的钻探靶区。该结果可为雄安新区深部岩溶热储的钻井地质设计、工艺优化和效率提高提供参考。Aiming at the characteristics of strong heterogeneity and poor drillability of deep dolomitic geothermal reservoirs in the Wumishan Formation in the Xiong’an New Area,and based on the abundant drilling,core,thin sections and logging interpretation data,we established the lithologic logging interpretation models for the strata at Xiong’an,and divided the lithologies of the Wumishan Formation into five types,i.e.,crystalline dolomite,granular dolomite,microbial dolomite,siliceous dolomite and brecciated dolomite.Combined with the drillability parameters such as compressive strength,hardness and abrasiveness,the drillability of brecciated dolomite and columnar stromatolitic dolomite in the Wumishan Formation are classified as easy-drill level,that of granular dolomite and laminite are classified as medium-drill level,and that of massive dolomicrite and siliceous dolomite are classified as hard-drill level.The 3-D geological model of Xiong’an is established by using geological modeling,to clarify the strata and lithology distribution regularity and drillability variety in the study area.The Niutuozhen uplift and Rongcheng uplift are finally delineated as the drilling target areas with the highest drilling efficiency and lowest drilling cost.Gaoyang low uplift,Tongkou-Yanling low buried-hill zone,Renqiu low buried-hill zone,Niubei slope and Lixian slope are sub-favorable potential drilling targets.The depression areas are the highest risk drilling target due to their high cost and technical challenge.The results provide reference for drilling geological design,technical optimization and efficiency improvement of deep karstic geothermal reservoirs at Xiong’an.

关 键 词：雄安新区 雾迷山组 三维地质模型 岩石力学 可钻性参数 

分 类 号：P618.13[天文地球—矿床学]