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时间:2020-01-14
《四川盆地东吴期泸州古隆起与茅口组碳酸盐岩缝洞储层分布.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第36卷第4期石油察劈沾痿Vo1.36.No.42014年7月PETRoLEUMGEOLOGY&EXPERIMENTJu1.,2014文章编号:1001—6112(2014)04—0411—05doi:10.11781/sysydz201404411四川盆地东吴期泸州古隆起与茅口组碳酸盐岩缝洞储层分布姜自然,陆正元,吕宗刚,杨坚(1.油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059;2.中国石油东方地球物理公司研究院,河北涿州072750;3.中国石油西南油气田分公司蜀南气矿,四川
2、泸州646001)摘要:中二叠世末的东吴运动是中国华南地区二叠纪影响较大的一次地壳运动。东吴运动在四川盆地内部发育了泸州古隆起,导致了茅口组不同程度的抬升剥蚀和岩溶储层的形成。利用大量钻孔资料编制了泸州古隆起上二叠统沉积前的古地质图,恢复了东吴期泸州古隆起剥蚀后的古地貌和古隆起抬升初期的古构造。资料揭示区域上茅口组剥蚀最严重的区域也是古隆起抬升的中心,东吴期泸州古隆起呈北北东向展布,北东翼宽缓,西南翼陡峭,古隆起核部茅口组具剥蚀夷平特征。泸州占隆起北东翼岩溶缓坡及其相邻的核部茅口组剥蚀夷平严重,岩溶缝
3、洞层段保存较少;西南翼岩溶陡坡及其邻近的古隆起核部一侧为溶蚀强度大、缝洞层段保留较多的区块,是茅口组缝洞储层发育的最有利区。关键词:泸州古隆起;东吴运动;茅口组;中二叠统;缝洞储层;四川盆地中图分类号:TE122.24文献标识码:ADistributionofcarbonatefracturedandvuggyreservoirsofMaokouFormationinLuzhouPaleo.upliftduringDongwuMovement,SichuanBasinJiangZiran一,LuZhe
4、ngyuan,LnZonggang,YangJian(1.StateKeyLaboratoryofOil&GasReservoirGeologyandExploitation(ChengduUniversityofTechnology),Chengdu,Sichuan610059,China;2.BGPGeophysicalResearchInstitute,CNPC,Zhuozhou,Hebei072750,China;3.ShunanGasFieldSouthwestOi’eldBranchCom
5、pany,PetroChina,Luzhou,Sichuan646001,China)Abstract:TheDongwuMovementwhichtookplaceattheendofthemiddlePermianwasanimportantcrustmovementinSouthChinaduringPermian.TheLuzhouPaleo—upliftwasformedduringthemovement,whichledtotheupliftanderosionoftheMaokouFor
6、mationandtheformationofpaleokarstreservoirs.Basedonboreholedata,apaleo—geologicalmapoftheLuzhouPaleo—upliftbeforethelatePermianwasdescribed,andthepaleo-geomorphologyaftererosionaswellasthepaleo—structureatthebeginningofupliftwerereconstructed.Itwasconcl
7、udedthattheMaokouFormationwasseriouslyerodedinthecenteroftheLuzhouPaleo—uplift.TheLuzhouPaleo—upliftwasinNNEdirectionwithgentlelimbinthenortheastandsteeplimbinthesouthwest.Thecoreofthepaleo-upliftwasfeaturedbyerosionplain.TheMaokouFormationwasseriouslye
8、rodedandthepaleokarstreservoirswerepartiallypreservedonthegentlelimbinthenortheastandtheadjacentcorepartoftheuplift.TheMaokouFormationwasseriouslycavedandthepaleokarstreservoirsweresavedOilthesteeplimbinthesouth.westandtheadjacen
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