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时间:2020-05-20
《苏里格气田召30井区盒8段层序格架内砂体构型分析-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第34卷第7期地质勘探·27·苏里格气田召3O井区盒8段层序格架内砂体构型分析王涛侯明才。王文楷。王峰。吴恒。苏中堂1,31.成都NT大学沉积地质研究院2.中国石油长庆油田公司勘探部3.“油气藏地质及开发212程”国家重点实验室·成都理工大学王涛等.苏里格气田召3O井区盒8段层序格架内砂体构型分析.天然气Z-业,2014,34(7):27—33.摘要召30井区位于鄂尔多斯盆地苏里格气田东部,研究该区的储集砂体构型可为井距优化提供依据。为此,基于对该区二叠系下石盒子组盒8段层序界面、层序结构及叠加样式等的综合研究成果,建立了该区盒8段高分辨率层序地层格架,在此等时地层格架内开展了储集砂体的构型分
2、析。结论认为:①中期基准面旋回层序格架内的砂体构型揭示了不同类型河流砂体的叠加样式及分布规律,辫状河砂体主要发育于中期基准面上升初期,砂体切割和相互叠置程度高,砂体连通性好;而曲流河砂体则发育于基准面下降期,砂体多呈叠加一独立型,砂体连通性差。②短期基准面旋回层序格架内的砂体构型定量刻画了不同类型河流单河道和河道带的砂体规模,曲流河单河道砂体最小宽度仅1I.42m,最大宽度达145.22m,平均宽度为42.7m;河道带最小宽度仅87.04m,最大宽度达1135.58m,平均宽度为330.68m;辫状河单河道砂体最小宽度仅46.40m,最大宽度达494.89m,平均宽度为208.36m;河道带最
3、小宽度仅109.76m,最大宽度达8807.3m,平均宽度为2244.12m。关键词鄂尔多斯盆地苏里格气田召30井区二叠纪高分辨率层序地层格架砂体构型井距优化气田开发效益D0I:10.3787/j.issn.1000—0976.2014.07.005Sandbodyconfigurationofsequencestratigraphicframeworkofthe8“MemberofthePermianLowerShiheziFminZhao30wellblock.easternSuligeGasField,OrdosBasinWangTao,HouMingcai,WangWenkai~,Wa
4、ngFeng,WuHeng,SuZhongtang,。(1.ResearchInstituteofSedimentaryGeology,ChengduUniversityofTechnology,Chengdu,Sichuan610059,China;2.ExplorationDepartmentofChangqingOieldCompany,PetroChina,Xi'an,Shaanxi710018,China;3.StateKeyLaboratoryofOil&GasReservoirGeologyandExploitation∥ChengduUni—versityofTechnolog
5、y,Chengdu,Sichuan610059,China)NATUR.GASIND.VOLUME34,ISSUE7,pp.27—33,7/25/2014.(ISSN1000—0976;InChinese)Abstract:TheZhao30wellblockissituatedintheeasternSuligeGasFieldenrichedwithnaturalgasresourcesintheOrdosBasin.Tostudythereservoirsandbodyconfigurationwillprovideabasisfortheoptimalselectionofwellsp
6、acingandgasplayfairwayssoastoenhancethewholeprofitinthedevelopmentofthisfield.Inviewofthis,basedonacomprehensivestudyofthesequencebounda—ries,structureandsuperimposedpatternofthe8memberofthePermianLowerShiheziFm(He一8member)inthisstudyarea.ahigh—resolutionsequencestratigraphicframeworkwasestablished.
7、Then,thesandbodyconfigurationwasanalyzedinthisisochronalstratigraphicframework.Thefollowingfindingswereconcluded.Thesandbodiesofabraidedriveraremainlydevelopedintheearlyrisingtimeofthemid—termbaseleve
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