高分辨率层序地层学在录井随钻对比中的应用

收稿日期:20170713;改回日期:20180108 基金项目:“十三五”国家科技重大专项“胜利油田特高含水期间提高采收率技术”(2016ZX05011) 作者简介:王健(1985—),男,工程师,2008年毕业于聊城大学地理信息系统专业,2011年毕业于中国石油大学(北京)矿产普查与勘探专业,获硕士学位,现从事钻井、测井及录井管理工作。DOI :10.3969/j.issn.1006-6535.2018.02.006

高分辨率层序地层学

在录井随钻对比中的应用

王 健,程建莉,戴荣东,肖建洪,郝金克

(中国石化胜利油田分公司,山东 东营 257000)

摘要:针对胜利油田东部井区受开发方式调整和油藏类型等因素影响,导致录井现场地层划分

与对比难以满足精细勘探开发需求的问题,基于高分辨率层序地层学理论,对正钻井进行高分

辨率层序随钻地层对比,将沙四上亚段划分为1个长期、3个中期、6个短期基准面旋回,从而

建立了研究区的高分辨率等时地层格架,实现了地层层序的等时划分与对比。研究表明:中期

基准面旋回的变化控制了砂体的叠加样式及横向展布,有利于录井现场地层的划分与对比;短

期旋回基准面的升降变化控制了砂体的类型,是预测油气层位置的重要依据。研究结果对胜

利油区地层分析和界面卡取等有一定的理论和实际指导意义。

关键词:录井;高分辨率层序地层学;基准面;随钻地层对比

中图分类号:TE121 文献标识码:A 文章编号:1006-6535(2018)02-0031-06

Application of High -Resolution Sequence Stratigraphy in the Strata Correlation with Mud Logging While Drilling

Wang Jian ,Cheng Jianli ,Dai Rongdong ,Xiao Jianhong ,Hao Jinke (Sinopec Shengli Oilfield Branch Company ,Dongying ,Shandong 257000,China )

Abstract :It is difficult to achieve fine exploration and development by the field strata classification and correlation

with mud logging while drilling due to the influences of development mode adjustment ,reservoir type and other as-pects in the eastern wellblock of Shengli Oilfield.High -resolution strata correlation with mud logging while drilling is implemented on the basis of high -resolution sequence stratigraphy theory.The upper sub -member of Sha4forma-tion is classified into 1long -term ,3medium -term and 6short -term datum cycles.A high -resolution isochronous stratigraphic framework for this area is established to obtain the isochronous classification and correlation of strati-graphic sequence.Research indicates that the medium -term datum cycles control the sandbody superimposition pat-

tern and lateral distribution ,which is beneficial to the field strata classification and correlation with mud logging while logging.The short -term datum cycles control the sandbody type ,which is considered as an significant basis

for hydrocarbon reservoir prediction.This research could provide certain theoretical and practical references for the

stratigraphy analysis and interface identification in Shengli Oilfield.Key words :mud logging ;high -resolution sequence stratigraphy ;datum ;strata correlation

0 引 言

随油气勘探开发的迅速发展,勘探对象向岩

性、地层等隐蔽性油藏转变,勘探难度逐渐增大,因

此,需要更准确的技术来提高地层分析精度。以

Cross 为代表的成因地层研究组提出了高分辨率层序地层学[1],其技术方法在层序分析和油气勘探开发中被越来越多的地质工作者所使用[2-11],但该理论应用于录井现场的实例很少。因此,以胜利油区利津洼陷南斜坡L76井区为例,应用高分辨率层序地层学理论,对录井现场的随钻对比模式进行探讨,为地层分析和油气层位置预测提供可靠的地质依据,从而提高现场录井分析精度和生产决策管理水平。

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