低渗多油层油藏水平井井网数值模拟优选.pdfVIP

2009年 2月 大庆石油地质与开发 Feb．，2009 第 28卷第 1期 Petroleum GeologyandOilfieldDevelopmentinDaqing V0I．28NO．1 文章编号：1000—3754 (2009)01-0041-04 低渗多油层油藏水平井井网数值模拟优选 刘德华 龙 明 (长江大学石油1_程学院，湖北 荆州 434023) 摘要：水平井开发油藏具有单井产量高、储量控制程度高、经济效益好等明显优势，近年来在世界各油田中得 到了越来越广泛的应用。针对大庆外围油藏具有低渗多油层的特征，应用数值模拟方法优选水平井井网的部署 力案。结果表明：与传统直井井网相比，水平井井网可以明显改善油藏开发效果、提高采出程度。优选得到最 优井阀为非对称五点水平井井网，与以往的五点水平井网相 比，扩大了井网控制面积，更有效地克服了因压力 损失造成的注水局部突进现象。 关 键 词：水平井井网；数值模拟；非对称五点水平井井网；低渗透 中图分类号：TE324 文献标识码 ：B NUM ERICAL SIMULATIoN oPTIM IZATIoN oFHoRIZoNTAL W ELL PATTERNSoF LoW PERM EABILITY RESERVoIRS W ITH M ULTILAYERS LIU De—hua，LONG Ming (PetroleumEngineeringCollege，YangtzeUniversity，Jingzhou434023，China) Abstract：Reservoirdevelopmentbyhorizontalwells，whicharewidelyusedinoilfieldsallovertheworldinrecent years，hassomeobviousadvantages，suchashighsinglewellproduction，highdegreeofreservescontrolandhigh economicbenefits．Inview ofcharacteristicsofperipherallylow permeabilityreservoirswithmuhilayersinDaqing Oilfield，patternsdeploymentandrelativedevelopmenteffectivenessofhorizontalwellspatternsareoptinuzedbyU— singreservoirsimulationmethod．Resultsindicatethat，comparedwithconventionalve~icalwellpatterns，horizon— talwellpatternscanimprovedevelopmenteffectivenessofreservoirsobviouslyandincreaserecoverypercentofre— serves．Theoptimalwellpatternsobtained by optimizationisasymmetricfive—spothorizontalwellpatterns．Corn— paredwithconventionalfive—spothorizontalwellpatterns，theyenlargewellpattern spacingandcanovercomelocal breakthroughofinjectedwatercausedbypressureloss． Keywords：horizontalwellpattern；numericalsimulation；asymmetricfive—spothorizontalwellpattern；lowper- meability 目前水平井井 网主要是排状和正方形水平井