合水地区长6油层微观渗流特征及驱油效率影响因素研究.pdf

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1、第19卷第2期EarthScienceFron地tie学rs前(C缘hin(a中U国niv地er质sity大o学fG(e北osc京ien)c；es北(B京eij大ing学)；)PekingUniversity)V01．19No．22012年3月Mar．2012合水地区长6油层微观渗流特征及驱油效率影响因素研究张章。，朱玉双，陈朝兵。”，4／i,~”，辛红冈9，朱静一，全洪慧1．大陆动力学国家重点实验室，陕西西安7100692．西北大学地质学系，陕西西安7100693．中海石油(中国)有限公司天津分公司，天津3004524．中国石油长庆油田

2、公司，陕西西安710069ZhangZhang，，ZhuYushuang，ChenZhaobing，'NiuXiaobing’”，XinHonggang，ZhuJing，’1．QuanHonghui'。’。1．StateKeyLaboratoryofContinentalDynamics，Xi'an710069，China2．DepartmentofGeology，NorthwestUniversity，Xi'an710069，China3．TianjinCompany，ChinaNationalOffshoreOilCorporatio

3、n，Tianjin300452，China4．ChangqingOilFieldCompany，PetroChina，Xi'an710069，ChinaZhangZhang，ZhuYushuang，ChenZhaobing，eta1．Micro-flowcharacteristicsandinfluencingfactorsofoildisplacementeffi—ciencyofChang-6reservoirinHeshuiarea．EarthScienceFrontiers，2012，19(2)：176-182Abstract：T

4、hepresentpaperisaimatadeeperstudyonthemicro-seepageflowandtheinfluencingfactorsofdisplacementefficiencyofChang6reservoirofTriassicYanchangFormationintheareaofHeshui，intheOr—dosBasininordertoprovideascientificbasisforincreasingtherecoveryratio．Taketherealsandstonemicro-mod

5、elexperimentasthemainmethodinthisstudy，andcombinedwiththecheckupofslices，SEM，mercurypenetrationetc．tostudytheporestructure，thecompositionoftherocks．Theresultsshowthatthewater-drivepatternsinthereservoirsofChang6inthisareaaremainlyhomogeneousseepageandreticularseepage，thef

6、ingerlikeseepageisfew．Thehomogeneousseepagegetsthehighestfinaloilsaturationandfinaldisplace—mentefficiency，themodelsofreticularseepagearelower，themodelsofthefingerlikeseepagearethelowest．Astothephysicalproperties，thepermeabilityisthefirstfactoraffectingthedisplacementeffi

7、ciency，thepo—rosityisthesecond；thedisplacementefficiencycanbeincreasedeffectivelybyincreasingthedrivepressureadvisably；thedisplacementefficiencyalsocanbeincreasedbyincreasingthemultiplevolumeofdrivingwater，finallytheheterogeneityalsoisoneoftheaffectingfactors．Keywords：Hes

8、hui；ultra-lowpermeability；micro-flowcharacteristics；oildisplacementefficiency；physicalpropertyof