欢迎来到天天文库
浏览记录
ID:54371204
大小:1.08 MB
页数:7页
时间:2020-04-30
《中国陆上湖相碳酸盐岩地质特征及勘探潜力.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国石油勘探第l9卷第4期CHINAPETROLEUMEXPLORATION2014年7月DOI:10.3969/j.issn.1672-7703.2014.04.002中国陆上湖相碳酸盐岩地质特征及勘探潜力闰伟鹏杨涛李欣黄福喜吴晓智唐惠(中国石油勘探开发研究院)摘要:湖相碳酸盐岩在中国古生代、中一新生代陆相沉积盆地中广泛发育,油气勘探证实具生油和储油能力,自1956年在四川盆地获得发现以来,至2012年底,已在四川、渤海湾、柴达木等盆地探明湖相碳酸盐岩油气田63个,探明石油地质储量5.97×10t。中国陆上湖相碳酸盐岩的形成和分布受控于构造
2、背景、气候、物源供给和海侵等多方面因素,主要发育生物礁型和复杂岩性型两类湖相碳酸盐岩,除分布局限的生物礁外,储层物性总体较差,为典型的致密油储层。湖相碳酸盐岩储层多与烃源岩互层或共生发育,具备较好的成藏条件,油气富集高产受沉积相、裂缝发育和构造位置等多因素控制,甜点预测难度大。中国陆上以湖相碳酸盐岩为主要储层的致密油分布范围广、资源潜力大,评价认为分布面积在10×10km以上,地质资源量在57X10t以上,具有良好的勘探开发前景。关键词:湖相碳酸盐岩;地质特征;控制因素;致密油;资源潜力中图分类号:TEl12文献标识码:AGeological
3、CharacteristicsandHydrocarbonExplorationPotentialofLacustrineCarbonateRockinChinaYanWeipeng,YangTao,LiXin,HuangFuxi,WuXiaozhi,TangHui(PetroChinaResearchInstituteofPetroleumExploration&Development)Abstract:Lacustrinecarbonaterockiswidelydevelopedin恤ePaleozoicandMeso.Cenozoic
4、continentalsedimentarybasinsinChina.Oilandgasexplorationhasconfirmedlacustrinecarbonaterockishydrocarbonsourcerockandreservoirrock.Bytheendof2012,atotalof63oilandgasfieldsoflacustrinecarbonaterockhavebeenproveninSichuanBasin,BohaiBayBasinandQaidamBasinsincethediscoveryWasma
5、deinSichuanBasinin1956.Theprovenoilinplacereached5.97x10t.DevelopmentanddistributionofChina’Sonshore1acustrinecarbonaterockiscontrolledbyanumberoffactors,suchasstructuralbackground,paleo—climate,sedimentarysourcerechargeandmarineinvasion,withdevelopmentoftwomaintypesoflacus
6、trinecarbonaterock—reefandcomplexlithology.Generallyspeaking,thepetrophysicalpropertiesofreservoirsarepoor,exceptforreefreservoirs.Theyaretypicalcompactoilreservoirs.Reservoirsoflacustrinecarbonaterockareofteninterbeddedwithhydrocarbonsourcerockandhavegoodconditionsforhydro
7、carbonaccumulations.HydrocarbonabundanceiScontrolledbysedimentaryfacies,fracturedevelopmentandstructurallocation.Itisdifficulttopredictthesweetspot.CompactoilreservoirsmainlycomposedoflacustrinecarbonicrockareextensivedistributedinChinawithagreatpotentialforresources.Assess
8、mentindicatesthatthedistributedareaexceedslOx104knl2whiletheamountofgeologicalreso
此文档下载收益归作者所有