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时间:2019-05-15
《不同运移方向下断裂附近油气聚集的差异性》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、2016年6月大庆石油地质与开发June,2016第35卷第3期PetroleumGeologyandOilfieldDevelopmentinDaqingVol?35No?3DOI:10?3969/J?ISSN?1000⁃3754?2016?03?005不同运移方向下断裂附近油气聚集的差异性文全(大庆油田有限责任公司勘探开发研究院,黑龙江省大庆163712)摘要:油气的运聚特征往往与断裂紧密相关。为了研究含油气盆地断裂发育区油气分布规律,在油气分布与对油气起输导或封闭作用断裂之间关系研究的基础上,利用不
2、同油气藏之间类比、同油藏不同油层不同部位对比的方法,从油气运移方向的角度出发,研究断裂附近油气聚集的差异性。结果表明不同运移方向下断裂附近油气聚集的差异性主要表现为3个方面:油气运移方向受控于油气在断裂附近聚集的条件,油气侧向运移时油气聚集所需的条件是遮挡断裂侧向封闭,而垂向运移时油气聚集所需条件是受盖层阻挡;油气运移方向不同,油气在断裂附近聚集的层位不同,侧向运移时油气主要在盖层之下储层中聚集,而垂向运移时油气主要在盖层之下高砂地比储层中聚集;油气运移方向不同,油气在断裂附近聚集部位不同,侧向运移时油气
3、主要在反向断裂下盘砂体中聚集,而垂向运移时油气主要在断裂上盘砂体中聚集。关键词:运移方向;侧向运移;垂向运移;断裂附近;油气聚集;差异性中图分类号:TE122?1文献标识码:A文章编号:1000⁃3754(2016)03⁃0026⁃05DIFFERENCESOFTHEHYDROCARBONACCUMULATIONNEARTHEFAULTSINDIFFERENTMIGRATIONDIRECTIONSWENQuan(ExplorationandDevelopmentResearchInstituteofDaq
4、ingOilfieldCo.Ltd.,Daqing163712,China)Abstract:Therearecloserelationshipsbetweenthepetroleummigration⁃accumulationcharacteristicsandfaults.Inordertostudythehydrocarbondistributionlawsinwell⁃developedfaultzonesoftheoil⁃gasbasin,onthebasisoftheresearchesont
5、herelationshipsbetweenthehydrocarbondistributionandfaultswhichtransportingtheoilandgasorplayingtheclosurerole,withthehelpofthemethodsofcontrastingamongthedifferenthydrocarbonreser⁃voirsandcomparingamongthedifferentpartsinthedifferentoillayersinthesamerese
6、rvoir,fromtheviewpointoftheoil⁃gasmigrationdirection,thedifferencesarestudiedforthepetroleumaccumulationnearthefaults.Thea⁃chievementsindicatethatthethreemaindifferencesfordifferentmigrationdirectionsareshownasfollows:thedi⁃rectionsarecontrolledbytheaccum
7、ulationconditionsfortheoilandgasnearthefaults,theaccumulationrequiredconditionforthelateralmigrationisthelateralclosureofthebarrelfaults,onthecontrary,fortheverticalmigra⁃tion,theconditionisthecaprockbarrel;fordifferentmigrationdirections,theaccumulatedla
8、yersnearthefaultsarenotsame:forthelateralmigration,thehydrocarbonismainlyaccumulatedbeneathorbelowthecaprocks,whilefortheverticalmigration,theoilandgasareprincipallyenrichedthereservoirswithhighsandstone⁃formation收稿
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