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1、2013年lO月大慶石油地質(zhì)與開發(fā)Oct..2013第32卷第5期PetroleumGeologyandOilfieldDevelopmentinDaqingV01.32No.5DOI:10.3969/J.ISSN.1000—3754.2013.05.003松遼盆地南部西斜坡高分辨率層序地層研究李如一王鳳來(1.大慶油田有限責(zé)任公司勘探開發(fā)研究院,黑龍江大慶163712;2.大慶油田有限責(zé)任公司勘探事業(yè)部,黑龍江大慶163453)摘要:根據(jù)鉆井、測(cè)井及地震資料,引入沉積轉(zhuǎn)換面概念,應(yīng)用以多級(jí)次基準(zhǔn)面旋回為參照面的高分辨層序地層學(xué)理論與方法,對(duì)松遼盆地南部西斜坡前緣帶的
2、青山口組一姚家組地層進(jìn)行了層序地層研究。共識(shí)別出4個(gè)長(zhǎng)期基準(zhǔn)面旋回、8個(gè)中期基準(zhǔn)面旋回,建立了層序劃分方案,在連井剖面的層序地層對(duì)比基礎(chǔ)上建立了地層格架;認(rèn)為青山口組底部層序?yàn)榕璧乜焖偎M(jìn)時(shí)期,向上至青三上層序?yàn)樗藭r(shí)期,至姚家組層序?yàn)榱硪凰M(jìn)初始階段;各旋回疊加樣式隨基準(zhǔn)面升降呈現(xiàn)有規(guī)律變化,層序格架分布樣式也對(duì)油氣運(yùn)聚具有顯著影響。關(guān)鍵詞:松遼盆地;西斜坡;坳陷期;高分辨率;層序地層;基準(zhǔn)面旋回中圖分類號(hào):TEl21.3文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000—3754(2013)05—0012—05HIGH—RESoLUTIoNSEQUENCESTRATIGRAPHIC
3、STUDYFoRWESTSLoPEoFSoUTHSoNGLIAoBASINLIRuyi,WANGFenglai(1.ExplorationandDevelopmentResearchInstituteofDaqingOilfieldCompanyLtd.,Daqing163712,China;2.ExplorationDepartmentofDaqingOieldCompanyLtd.,Daqing163453,ChinaJAbstract:Basedonthedrilling,wellloggingandseismicdata,throughintroducingt
4、heconceptofdepositionalconversionsurfaceandapplyingthetheoryandmethodofhigh—resolutionsequencestratigraphytakingthemulti—gradedatumlevelcyclesasthereferringinterfaces,thesequencestratigraphicstudiesontheQingshankouForma—tion—YaojiaFormationinthefrontbehsofWestSlopeofSouthSongliaoBasinar
5、econducted.Fourlong—termbaselevelcyclesandeightmedium—termbaselevelcyclesarerecognizedaltogether,andthenthesequenceclassifyingprogramsareestablished,onthebasisofthesequencestratigraphiccontrastofthewell—commingledprofiles,thestratigraphicframeworkisbuilt;thestudiesshowthatQingshankou—Fo
6、rmationbottom/lowersequencedepositsintheperiodoffastwater.transgressionandtheuppersequenceofQingshankouFormationbelongstotheperiodofthewater.regression,andmoreovertheupwardYaojia-Formationsequenceislocatedintheinitialstageofanotherwa—ter.transgression;besidesthestackedpatternsofeachcycl
7、echangeregularlywiththeriseandfallofthelevel,thedistributiontypesofsequenceframeworkalsopossessremarkablyinfluencesontheoilandgasmigrationandaccu—ml11ation.收稿日期:2013—01—10改回日期:2013-06—03基金項(xiàng)目:國家油氣重大專項(xiàng)“大中型氣田蓋層定量評(píng)價(jià)及斷層封堵作用”(2011ZX05007)。作者簡(jiǎn)介:李如一,女,1980年生,工程師,從事石油地質(zhì)研究工作。E—mail:liruy