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ID:37378029
大小:1.25 MB
页数:6页
时间:2019-05-22
《塔里木盆地塔北隆起天然气轻烃地球化学特征及应用》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、学兔兔www.xuetutu.com专天然乞化第3l卷第3期0IL&GASGEOL0GY2010年6月文章编号:0253—9985f2010)03—0271—06塔里木盆地塔北隆起天然气轻烃地球化学特征及应用陈践发,苗忠英,张晨,陈鸿雁(中国石油大学油气资源与探测国家重点实验室,北京102249)摘要:通过分析塔里木盆地塔北隆起天然气中轻烃组分的特征,认为塔北隆起油型气、煤型气和混合型3类天然气藏中轻烃的分布特征具有明显的差异。分布在英买力低凸起和哈拉哈塘凹陷的油型气,其轻烃组分中正构烷烃和正庚烷的相对含量较高;分布在轮台断隆的煤型气,其轻烃组分中异构烷烃、甲基环己烷和苯的相对含量较高;
2、分布在东河塘断裂带附近的混源气,其轻烃组分中苯、甲基环己烷和正庚烷的相对含量均较高。根据甲烷碳同位素和轻烃成熟度参数估算的成熟度特征,认为提尔根、羊塔克断裂带和英买32潜山构造带天然气至少应存在两期成藏;英买7、东河塘断裂带和英买2潜山构造带天然气为一期成藏。天然气中轻烃参数显示,轮台断隆西段的天然气具有自库车坳陷向塔北前缘隆起带运移充注的特征。关键词:庚烷值;异庚烷值;Mango参数;运移方向;轻烃;天然气;塔北隆起;塔里木盆地中图分类号:TEl22.1文献标识码:AGeochemicalcharacteristicsoflighthydrocarbonsinnaturalgasint
3、heTabeiUpliftoftheTarimBasinandtheirimplicationsChenJianfa,MiaoZhongying,ZhangChenandChenHongyan(StateKeyLaboratoryofPetroleumResourceandProspecting,ChinaUniversityofPetroleum,Beijing102249,China)Abstract:BasedontheanalysisoflighthydrocarbonsinnaturalgasintheTabeiUpliftoftheTarimBasin.0b.viousdif
4、ferencesarefoundinthedistributioncharacteristicsoflighthydrocarbonin3typesofnaturalgas:petroli—ferousgas,coal—relatedgasandmixedgas.Forpetroliferousgas,whichisdistributedintheYingmaililowupliftandtheHalahatangsag,relativecontentsofn—alkaneandn—heptanearehigh;forcoal—relatedgas,whichisdis—tributed
5、intheLuntaifaultuplift,relativecontentsofisoparafin,methylcycl0hexaneandbenzenearehigh;formixedgas,whichisdistributedintheDonghetangfaultbelt,relativecontentsofbenzene,methylclohexaneandn—heptanearehigh.Accordingtogasmaturityestimatedusingparameterssuchascarbonisotopeofmethaneandthematurityofligh
6、thydrocarbon,webelievethat(1)therewereatleasttwo.phasesofpool—formingfornaturalgasintheTi’ergenfaultbelt,theYangtakefaultbeltandtheYingmai32buriedhillstructuralzone;(2)naturalgasintheYingmai7faultbelt,theDonghetangfaultbeltandtheYingmai2buriedhillstructuralzoneexpe.riencedone—phasedpool—formingpr
7、ocess;(3)parametersoflighthydrocarbonrevealthatnaturalgasinthewesternpartoftheLuntaifaultuplifthasfeaturesofmigratingandchargingfromtheKuqadepressiontotheTabeiforebulgebelt.Keywords:valueofheptane,valueofisoheptane,par
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