文档名:沉积模式约束的蚀源区砂砾岩分布预测研究
摘要:古潜山油气藏表面普遍发育一套准原地沉积成因的砂砾岩储层,物性好、产能高但展布规律复杂,亟需开展储层分布预测,支持潜山油气藏开发.该文以渤海A油田太古界潜山为例,采用"将今论古"思路,建立蚀源区砂砾岩沉积原型模式.基于微古地貌恢复,充分利用三维地震资料的低频响应特征,实现了古潜山蚀源区砂砾岩储层分布预测,取得以下认识:(1)蚀源区砂砾岩沉积受局部地形地貌控制,在山地区、山间洼地、山间沟谷形成不同沉积组合模式;(2)在印模法基础上,采用层面斜率属性差异放大技术实现了微古地貌精细刻画,基于低频地震数据开展地震属性分析,利用属性分布与微地貌单元的对应关系,进一步判断储层分布预测结果的合理性.A油田研究结果显示,其蚀源区砂砾岩分布符合山地区发育的"山间侵蚀河道-山前冲积扇"组合模式,山间沟谷内砂砾岩呈连续条带状,山峰山脊区砂砾岩发育程度低、呈不连续斑块状分布,山前斜坡地貌单元砂砾岩呈连片分布.
Abstract:Asetofsandandgravelreservoirswithquasiin-situsedimentarygenesisarecommonlyde-velopedonthesurfaceofancientburiedmountainoilandgasreservoirs,whichhavegoodphysicalpro-pertiesandhighproductivitybutcomplexdistributionpatterns.Itisurgenttocarryoutreservoirdistri-butionpredictiontosupportthedevelopmentofburiedmountainoilandgasreservoirs.ThisarticletakestheArcheanburiedhillinBohaiAoilfieldasanexampleandadoptstheapproachof"discussingthepresentandthepast"toestablishaprototypemodelofsandandgravelsedimentationinthesourcearea.Basedontherestorationofmicroancientlandformsandfullyutilizingthelow-frequencyresponsecha-racteristicsof3Dseismicdata,thedistributionpredictionofsandandgravelreservoirsintheancientburiedhillerosionsourceareahasbeenachieved.Thefollowingunderstandinghasbeenobtained:(1)Thesedimentationofsandandgravelintheerosionsourceareaiscontrolledbylocalterrainandlandforms,formingdifferentsedimentarycombinationpatternsinmountainareas,intermountaindepre-ssions,andintermountainvalleys;(2)Onthebasisoftheimpressionmethod,thefinecharacterizationofmicropaleogeomorphologyisachievedusingthetechniqueofamplifyingthedifferenceinlayerslopeattributes.Basedonthelow-frequencyseismicdata,seismicattributeanalysisiscarriedout,andthecorrespondingrelationshipbetweenattributedistributionandmicrogeomorphicunitsisusedtofurtherjudgetherationalityofreservoirdistributionpredictionresults.TheresearchresultsofOilfieldAshowthatthedistributionofsandandgravelinitserosionsourceareaconformstothe"mountainerodedriverfrontalluvialfan"combinationmodeldevelopedinmountainousareas.Thesandandgravelinthemountainvalleysareinacontinuousstripshape,whilethesandandgravelinthepeakandridgeareasarepoorlydevelopedanddistributedindiscontinuouspatches.Thesandandgravelinthegeomorphicunitsofthemountainslopearedistributedincontinuouspatches.
作者:肖大坤 王巍 范洪军 葛尊增 高云峰 罗江华 Author:XIAODakun WANGWei FANHongjun GEZunzeng GAOYunfeng LUOJianghua
作者单位:中海油研究总院有限责任公司,北京100028中海石油(中国)有限公司勘探开发部,北京100010
刊名:河北工程大学学报(自然科学版) ISTIC
Journal:JournalofHebeiUniversityofEngineering(NaturalScienceEdition)
年,卷(期):2024, 41(3)
分类号:P512.31
关键词:蚀源区 砂砾岩 原型沉积模式 古地貌 储层预测
Keywords:erosionsourcearea sandyconglomerate prototypesedimentarymode paleogeomorpho-logy reservoirprediction
机标分类号:TE121.3P618.13P512.2
在线出版日期:2024年7月4日
基金项目:国家自然科学基金,中国海油集团公司十四五重大科技项目,中海石油(中国)有限公司科研课题沉积模式约束的蚀源区砂砾岩分布预测研究[
期刊论文] 河北工程大学学报(自然科学版)--2024, 41(3)肖大坤 王巍 范洪军 葛尊增 高云峰 罗江华古潜山油气藏表面普遍发育一套准原地沉积成因的砂砾岩储层,物性好、产能高但展布规律复杂,亟需开展储层分布预测,支持潜山油气藏开发.该文以渤海A油田太古界潜山为例,采用"将今论古"思路,建立蚀源区砂砾岩沉积原型模式....参考文献和引证文献
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