泡沫辅助SAGD开发特征.pdf

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1、2014牟第38卷中国石油大学学报(自然科学版)V01．38No．3第3期JournalofChinaUniversityofPetroleumJun．2014文章编号：1673．5005(2014)03—0093-06doi：10．3969／j．issn．1673-5005．2014．03．015泡沫辅助SAGD开发特征鹿腾，李兆敏，孙晓娜，李宾飞，高永荣，王宝利(1．中国石油大学石油工程学院，山东青岛266580；2．中国石油勘探开发研究院，北京100083；3．青海油田勘探开发研究院，甘肃

2、酒泉736202)摘要：应用数值模拟及Surfer制图软件绘制蒸汽辅助重力泄油(SAGD)和泡沫辅助SAGD(FA—SAGD)在均质和非均质油藏中温度场分布图，对不同开发方式下蒸汽腔扩展过程进行直观、形象地描述，并对比两种开发方式的开发效果。结果表明：FA—SAGD蒸汽腔横向扩展速度大于SAGD，垂向扩展速度小于SAGD，FA—SAGD蒸汽腔主要作用于油层中部．蒸汽腔与盖层接触面积较小，盖层热损失较小；非均质储层SAGD开发过程中，蒸汽易沿高渗透层窜流，蒸汽腔在水平井筒方向不均匀展，FA．SAG

3、D开发过程中，由于泡沫对蒸汽沿高渗层窜流的调控作用，蒸汽腔在地层内的扩展更为均匀．可以减小产出能量和盖层热损失，提高生产油汽比和采收率。关键词：稠油油藏；蒸汽辅助重力泄油；泡沫；数值模拟；蒸汽腔中图分类号：TE345文献标志码：ACharacterizati0noffoamassistedSAGDprocessLUTeng，LIZhao—min，SUNXiao．Ha，LIBin-fei，GAOYong—rong，WANGBao—li。(1．SchoolofPetroleumEngineering

4、inChinaUniversityofPetroleum，Qingdao266580，China；2．PetroChinaExplorationandDevelopmentResearchInstitute，Beijing100083，China；3．PetroleumExplorationandDevelopmentResearchInstituteofQinghaiOilfield，Jiuquan736202，China)Abstract：Steamassistedgravitydraina

5、ge(SAGD)andfoamassistedSAGD(FA—SAGD)areeffectiveprocessesforheavyoilrecovery．ThetemperaturedistributionsintheseprocesseswerestudiedforbothhomogeneousandheterogeneousreservoirsU—singanumericalsimulationmethodinordertorevealtheexpansionofthesteamchambe

6、rsandcomp~etheeffectivenessofthetwoproductionmethods．Theresultsshowthat，intheFA-SAGDproductionprocess，thelateralexpansionofthesteamchain—herisfasterthanthatintheSAGDprocess，andtheverticalexpansionisslowerthanthatintheSAGD．ThesteamchamberoftheFA—SAGDi

7、smainlydevelopedinthemiddlepartofthereservoir，anditscontactareawithcaprocksissmall，whichCanreducetheheatlossofthecaprock．WhentheSAGDprocessisappliedinaheterogeneousreservoir，steamtendstoflowthroughmainlyinhighpermeablelayers，andtheexpansionofthesteam

8、chamberalongthehorizontalwellboreisnotuniform．WhileintheFA—SAGDprocess，theexpansionofthesteamchamberinthereservoirisuniformduetotheblockingeffectoffoaminhighpermeablelayers，whichcanincreasethesweepingefficiencyoffoamandreduceheatloss．Subsequently，the