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1、石油與天然氣地質(zhì)第26卷第2期OIL&GASGEOLOGY2005年4月文章編號:0253-9985(2005)02-0257-06白音查干凹陷變換構(gòu)造與油氣關(guān)系111112庫國正,張放東,鄧已尋,李西愛,王婧韞,柳金鐘(1.中原油田勘探開發(fā)科學(xué)研究院,河南濮陽457001;2.中原油田地質(zhì)錄井處,河南濮陽457001)摘要:白音查干凹陷在發(fā)育演化過程中,由于基底的升降、斷裂活動的不均衡性,導(dǎo)致伸展變形構(gòu)造的不同部位形成多種類型的變換構(gòu)造調(diào)節(jié)體系。白音查干凹陷毛呼凸起就是一個大的變換構(gòu)造帶,由兩個同向型斜向調(diào)節(jié)帶和一個平行走向型調(diào)節(jié)帶組成。西部洼陷的
2、構(gòu)造調(diào)節(jié)帶主要有反向型背斜調(diào)節(jié)帶、同向型橫向調(diào)節(jié)帶、同向型斜向調(diào)節(jié)帶和平行走向調(diào)節(jié)帶4種類型?？碧綄嵺`證明,西部洼陷南部的錫林好來、達爾其南、達爾其東和翁特等構(gòu)造調(diào)節(jié)帶及附近地區(qū),構(gòu)造、巖性和地層超覆不整合圈閉發(fā)育,又長期處于油氣運移的主要指向,有利于油氣的聚集和富集。關(guān)鍵詞:白音查干凹陷;伸展盆地;變換構(gòu)造;調(diào)節(jié)帶;油氣中圖分類號:TE111.1文獻標識碼:ARelationshipbetweentransferstructuresandhydrocarbonsinBaiyinchagandepression111112KuGuozheng,Zhan
3、gFangdong,DengYixun,LiXi!ai,WangJingyun,LiuJinzhong(1.ExplorationandDevelopmentResearchInstitute,ZhongyuanOilfieldCompany,Puyang,Henan;2.GeologicLoggingDepartmentofZhongyuanOilfieldCompany,Puyang,Henan)Abstract:DuringtheevolutionofBaiyinchagandepression,varioustypesoftransferstruct
4、uralaccommodationsystemshavebeenformedindifferentpartsoftheextensionalstructure,duetotheelevationandsubsidenceofthebasementandunevenfaulting.MaohuswellinBaiyinchagandepressionisalargetransferstructuralzone,whichconsistsoftwosyntheticobliqueaccommodationzonesandonestrikeparalleleda
5、ccommodationzone.Thestructuralaccommodationzonesinthewesternsagcanbedividedinto4types,includingantitheticanticlineaccommodationzone,synthetictransverseaccommodationzone,syntheticobliqueaccommodationzoneandstrikeparalleledaccommodationzone.Explorationpracticesshowthattherearewelld
6、evelopedstructural,lithologicalandoverlappingunconformitytrapsintheXilinhaole,Darqinan,DarqidongandWongteaccommodationzonesandtheiradjacentareasinsouthernpartofthewesternsag,andtheyhavelongbeeninthemajordirectionofhydrocarbonmigration.Therefore,theyarefavorablefortheaccumulationand
7、enrichmentofhydrocarbons.Keywords:Baiyinchagandepression;extensionalbasin;transferstructure;accommodationzone;petroleum[2]白音查干凹陷是二連盆地西端的一個三級含造疊加的結(jié)果。目前已發(fā)現(xiàn)都紅木組一段、騰[3]油氣單元,是發(fā)育在海西褶皺基底之上的中生代格爾組、阿爾善組二段三套含油層系,展現(xiàn)了良白堊紀陸源沉積凹陷。受邊界正斷層控制形成北好的油氣勘探前景。[1]斷南超的半地塹凹陷,走向北東東,勘探面積約變換構(gòu)造與油氣關(guān)系研究是近年來伸展盆地2
8、3200km。二連盆地中生代的演化過程經(jīng)歷了多構(gòu)造研
