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ID:37381605
大小:1.03 MB
页数:7页
时间:2019-05-22
《疏松天然气储层保压岩心气体饱和度实验技术》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、2014年4月大庆石油地质与开发Apr.,2014第33卷第2期PetroleumGeologyandOilfieldDevelopmentinDaqingVo1.33No.2DOI:10.3969/J.ISSN.1000.3754.2014.02.008疏松天然气储层保压岩心气体饱和度实验技术曲斌刘玉陈志敏(大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712)摘要:含气饱和度是气藏储量计算、储层评价的核心参数,更是储量参数研究中的难点,采用常规岩心分析技术无法准确地获取疏松岩心气体饱和度参数。通过对疏松保压岩心的超低温冷冻、流体收集、储层参数恢复、物性参数分析等技术研究,建立
2、了疏松保压岩心气体饱和度分析技术,能够准确地获得储层气、水饱和度参数。在TB6.xl井实际应用中,求取储层岩石最大含气饱和度在75%以上,而且分析数据显示了不同岩性具有不同的气、水饱和度,饱和度总和在95%以上,真实地反映了天然气储层气、水分布规律,体现了技术的准确性与可行性。通过该井岩心分析弄清了储层不同岩性气水分布特征,为开展二次测井解释和建立测井解释图版奠定了基础。关键词:疏松岩心;气饱和度;气、水分布;实验技术中图分类号:TE311文献标识码:A文章编号:1000—3754(2014)02-0035—07EXPERIMENTALTECHNIQUEoFTHEGASSATURATI
3、oNFoRTHEPRESSURECoREINUNCoNSoLIDATEDNATURALGASRESERVoIRQuBin,LIUYu,CHENZhimin(ExplorationandDevelopmentResearchInstituteofDaqingOilfieldCompanyLtd.,Daqing163712,China)Abstract:Gassaturationisthecoreparameterofthereservecalculationandreservoirevaluationforgasreservoir,andmoreoveritisthestudydific
4、ultyofthereservesparameters,thegassaturationparameterinaloosecorecannotbeaccuratelyobtainedbymeansoftheconventionalcoreanalyzingtechniques.Throughthetechnicalstudiessuchasultralowtemperaturefrozen,physicalparametersanalyses,fluidscollection,reservoirparametersrecover-Y,etc.,theanalyzingtechnique
5、fortheloosepressurecoreisestablished.Thistechniquecanaccuratelycollectthesaturationparametersofthegasandwater.IntheapplicationofWellTB6一xl。alargeamountofnaturalgasiscol-lected,thegassaturationofthereservoirrocksisobtained,themaximumgassaturationismorethan75%,theseachievementsdisplaytheadvancedna
6、tureofthetechnique;andfurthermoretheanalyzeddatashowthattherearedifferentsaturationsfordifferentlithologies,thesumofthesaturationisupto95%orabove,theseresultstmelyreflectandembodythedistributionlawsofthegasandwaterinthenaturalgasreservoirs,andtheaccuracyandfea-sibilityofthegassaturationanalyzing
7、technique.Throughtheanalysesofthewellcore,thecharacteristicsofthegasandwaterdistributionsforthedifferentlithologiesaremadeclearandfurthermoretheshortageofthewelllog-ginginterpretationinthelow—abundancegas—bearingorpoor—physi
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