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1、2016年3月西安石油大學(xué)學(xué)報(bào)(自然科學(xué)版)Mar．2016第3l卷第2期JournalofXianShiyouUniversity(NaturalScienceEdition)Vo1．31No．2DOI：10．3969／j．issn．1673-064X．2016．02．001中圖分類號(hào)：TEl12．31文章編號(hào)：1673-064X(2016)02-0001．10文獻(xiàn)標(biāo)識(shí)碼：A彭陽(yáng)油田長(zhǎng)3段成藏條件與成藏規(guī)律蘭朝利，王奇，張欣(中國(guó)石油大學(xué)(北京)石油工程教育部重點(diǎn)實(shí)驗(yàn)室，北京102249)摘要：根據(jù)巖心分析、測(cè)井與試油資料，評(píng)價(jià)了彭陽(yáng)油田長(zhǎng)3段油藏成藏條件，厘定了關(guān)鍵成藏要素與成藏規(guī)律。長(zhǎng)3
2、段油藏?zé)N源巖為延長(zhǎng)組長(zhǎng)6、長(zhǎng)7段暗色泥巖，在早白堊世末期成熟，由斷層、裂縫和延長(zhǎng)組頂不整合疏導(dǎo)體系大量進(jìn)入目的層。油藏經(jīng)歷了4次擠壓抬升，三疊紀(jì)末期擠壓奠定其構(gòu)造形態(tài)，形成了鼻狀和低幅度圈閉；后三期擠壓使目的層整體抬升，但未破壞油藏圈閉。構(gòu)造、儲(chǔ)層與聚集條件是控制油氣成藏的關(guān)鍵因素。長(zhǎng)3段構(gòu)造、構(gòu)造一巖性圈閉形成早于或同步于油氣大量充注時(shí)期。受小型三角洲平原分流河道控制，長(zhǎng)3段砂體寬度窄、厚度薄，且后期遭受了較強(qiáng)的成巖作用，決定了該油藏規(guī)模普遍較小。關(guān)鍵詞：成藏條件；成藏規(guī)律；延長(zhǎng)組長(zhǎng)3段；彭陽(yáng)油田；鄂爾多斯盆地HydrocarbonAccumulationConditionsandRules
3、inSandstoneReservoiroftheThirdMemberofYanchangFormationinPengyangOilfieldLANChaoli，WANGQi，ZHANGXin(MOEKeyLaboratoryofPetroleumEngineering，ChinaUniversityofPetroleum(Beijing)，Beijing102249，China)Abstract：ThehydrocarbonaccumulationeonditionsofthesandstonereservoirsofthethirdmemberoftheYanchangFormatio
4、n(Chang3)inPengyangOilfieldwereevaluatedbasedoncoreanalysis，loggingandoiltestingdata，andthekeyhydrocarbonaccumulationfac—torsandrulesweredetermined．ThehydrocarboninChang3reservoirismainlyfromthedarkmudstonesofChang6andChang7mem—ber，itmaturedintheendoftheearlyCretaceousandlargelyenteredtheChang3reser
5、voirthroughfaults．fracturesandtheunconformityonthetopoftheYanchangFormation．TheChang3reservoirhadundergonecompressionanduplift4timesintheendofTriassic．theearlyJurassic，themiddleJurassicandthelateCretaceousrespectively．ThecompressionandupliftintheendoftheTriassicestablishedabasicmonoclinewitheasttend
6、encyandE—Wstrikingnosestructuresandlow—amplitudeanticlinesforChang3member；thelaterthreecompressionsmadetheChang3memberupliftasawhole，butdidnotdamagethestructuraltraps．Structure，reservoirdistributionandhydrocarbonaccumulationconditionsarethekeyfactorstothehydrocarbonaccumulationinChang3member．Thestru
7、cturaltrapsandthestructural—lithologiealtrapsintheChang3memberformedbeforeoratthesametimeagreatdealofhydrocarbonchargedthereservoir．Underthecontrolofthesmalldeltaplaindistributarychannel，thewidthandth
