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1、第33卷第3期石油寥囂弛屆Vo1.33.No.3201i年6月PETRoLEUMGE0L0GY&EXPERIMENTJun..2011文章編號(hào):1001—6112(2011)03—0233—06塔河油田中下奧陶統(tǒng)頂面古構(gòu)造演化及油氣關(guān)系張小兵,呂海濤。,趙錫奎,李坤。,何建軍(1.成都理工大學(xué)沉積地質(zhì)研究院,成都610059;2.成都理工大學(xué)能源學(xué)院,成都610059;3.中國(guó)石化西北油田分公司勘探開(kāi)發(fā)研究院,烏魯木齊830011;4.四川教育學(xué)院,成都610059;5.成都理工大學(xué)網(wǎng)絡(luò)教育學(xué)院,成都6
2、10059)摘要:奧陶系是塔河油田的主要產(chǎn)層。構(gòu)造演化及古構(gòu)造研究認(rèn)為,中下奧陶統(tǒng)在加里東Ⅱ幕期表現(xiàn)為一北東向較寬緩的鼻凸,高點(diǎn)在現(xiàn)今輪臺(tái)斷裂附近;海西早期構(gòu)造軸向轉(zhuǎn)為北北西,海西晚期一喜馬拉雅早期,表現(xiàn)為~由近北西向、北東向斜坡組成的、軸向?yàn)楸睎|向的緩頂式直角狀凸起;喜馬拉雅晚期到現(xiàn)今,該區(qū)受西部應(yīng)力作用和區(qū)域翹傾結(jié)果,南部軸線保持呈北東向不變,而北部軸線由西往東遷移,構(gòu)造高點(diǎn)也由北向南遷移。加里東中晚期構(gòu)造、巖溶及成巖等作用。為塔河油田第一次油氣成藏提供了儲(chǔ)集空間;受海西早期構(gòu)造運(yùn)動(dòng)的強(qiáng)烈影響,先期
3、油藏被破壞并在局部地區(qū)形成重質(zhì)油藏,同時(shí)為海西晚期的油氣充注提供了儲(chǔ)集空間;印支期以來(lái),該區(qū)的成藏系統(tǒng)主要以整體調(diào)整為主。關(guān)鍵詞:古構(gòu)造;構(gòu)造演化;中下奧陶統(tǒng);塔河油田;塔里木盆地中圖分類號(hào):TEl22.31文獻(xiàn)標(biāo)識(shí)碼:APale0structuralevolution0fL0wer——Middle0rdoviciantopanditsrelationshipwithhvdrOcarbOninTaheOilFieldZhangXiaobing,LnHaitao。,ZhaoXikui,LiKun,HeJi
4、anjun(1.InstituteofSedimentaryGeology,ChengduUniversityofTechnology,Chengdu,Sichuan610059,China;2.CollegeofEnergyResources,ChengduUniversityofTechnology,Chengdu,Sichuan610059,China;3.ResearchInstituteofPetroleumExplorationandProduction,NorthwestBranchCom
5、pany,SINOPEC,Urumqi,Xnjiang830011,China;4.SichuanCollegeofEducation,Chengdu,Sichuan610059,China;5.CollegeofNetworkEducation,ChengduUniversityofTechnology,Chengdu,Sichuan610059,China)Abstract:OrdovicianisthemainhydrocarbonproducingreservoirintheTaheOilFie
6、ld.Studiesoftee—tonicevolutionandDaleostructuresindicatedthattheMiddle——LowerOrdoviciantopwasanose—likeconvextothenortheastduringthe2ndphaseofCaledonianMovement.Thehighestpoint1ocatedaroundthepresentLuntaiFracture.DuringtheearlyHercynianperiod,structurea
7、xialchangedtoNNW.FromthelateHercyniantotheearlyHimalayan.thestudyareawasarectangularconvexcomposedofNWandNEorientedslopesandthestructureaxialwastothenortheast.FromthelateHimalayantillnow,influencedbythewesternstresseffectandtheregionalwarping。thesouthern
8、axialremainedunchanged,yetthenorthernaxialchangedfromwesttoeast,andthehighestpointmigratedfromnorthtosouth.Tectonic。karstanddiagenesiseffectsduringthemiddleand1ateCaledonianprovidedroomforthefirsthydrocarbonaccumulationint