鄂爾多斯盆地長(zhǎng)4+5油層組沉積相特征及層序演化.pdf

1、長(zhǎng)安大學(xué)碩士I學(xué)位論文指導(dǎo)教師姓名蔓壹善塑一疊蕉垂：塑墼堡一申請(qǐng)學(xué)位級(jí)別亟一：學(xué)科名稱筻塑堂!笙壅堂：鲞互堂論文提交日期至鯉墨壘量縣一論文答辯日期塑!肇』!!三6望學(xué)位授予單位墼壹叁鱟答辯委員會(huì)主席：幣受磁◇學(xué)位論文評(píng)閱人：盈絲壟壘絲才二oo五年五月ABSTRACTBasedonmasteringfieldgeologicaldataanddigestingtheresearchresultofpredecessors，bymeanso

2、fcomprehensiveanalysisoffieldgeologicalofoutcrops，observationanddescriptionofcores，analysisofdrillingandloggingdata，lightandheavymineralsinsandstones，observationandidentifyicationofthin—sections，theouthoranalyzethecharac

3、teristicsofsedimentresource，sedimentorysystemsandsedimentoryfacies，therelationtoevolutionofhighresolutionsequencestratigraphyandsourcereserviorcapassemblagesofChang45oilbearingbedoftheUpperTriassicYanchangFormationinOrdo

4、rsBasinResearchonpaleocurrentdirectionsandprovenancesindicatenortheastandsouthwestdirectionarethetwomajorsedimentresourcesofChang450il—bearingbedBasedonlithologytype，sedimentarystructure，conformation，paleontologygyration

5、，combinationoflithologyandelectricityoutcropinthefield，informationoftestingwellandmanyothermethods，thepaperconsiderthatsedimenlorysystemsofChang45oilbearingbedcanbedevidedintoalluvialfans，lacustringanddeltafacies，andfurt

6、hersortthemintofourteensubfaciesandtwentyfourmicrofaciesAccordingtothestratigraphydevelopmentcharacteristicsandregionalstructureofChang450ilbearingbedoftheresearchregion，atthesamelime，consideringthesequencedevelopment’Sf

7、actorincludingstructure，climate，resource，A／S，combiningCross’Sprinciple，theouthordevidetheChang45oil—bearingbedintotwoshort—termbaselevelsandelevensuper—shorttermbaselevelsKeywords：OrdosBasin；theUpperTriassicYanchangForma