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1、stimulationtestofsidetrackinghorizontalwellwithturningonsuper-shortradiusinNBfield北布扎奇油田短半径侧钻水平井增产试验纲要水平井是上世纪80年代以后世界上快速发展的一项新型开发技术.特别是老井开窗侧钻水平井技术的发展和短半径水平井钻井技术的成熟不但使水平井钻井成本大大降低,并且更有利于浅井的机械采油作业,可满足浅层井的抽油泵的泵挂深度,因此,旧井开窗短半径水平井技术目前已做为成熟技术在世界油气田的开发中广泛应用于老油田
2、的增产中。In1980’s,HWtechnologiesasanewmethoddevelopedveryquicklyintheworld,especiallysidetrackHWbyslottinginoldwellandsuper-shortradiusHWwhichdecreaseddrillingcostandalsomadeformechanicalproductionofshallowwell,thatmeansinshallowwellthetraditionalpumpalsoc
3、anbeusedtopumpoilthoughthewellinverylowfluidlevel.NowsidetrackHWbyslottinginoldwellwithshortradiusbeingangoodwayhasalreadybeenappliedwidelyindevelopmentofoldwellstimulationinoilandgasfieldoftheworld.1.开展短半径侧钻水平井试验的目的1.PurposeofSuper-shortRadiusSidetrac
4、kHWTest侧钻水平井技术概述BriefintroductionofsidetrackHWtechnology1.开展短半径侧钻水平井试验的目的1.PurposeofSuper-shortRadiusSidetrackHWTest利用停产报废井开采平面剩余油;toproduceremainingoilinplain?inwellsshutinorabandoned.开采停产报废井中的薄油层或低渗油层,提高开发效益.Todevelopthinlayeroroilformationwithlowp
5、ermeabilityofwellsshutinorabandoned.稠油油藏的开采toproduceinstickyreservoir.侧钻水平井技术概述BriefintroductionofsidetrackHWtechnologyadvantage1(优点1:)井眼横向穿过油层,井眼在油层中具有很大的裸露面积,油井生产时的生产压差小,压力涉及面大,产量高;boreholedrillsthroughoilformationinparallel.Withabigbarearea.Produc
6、ingpressuredifferenceofProducerissmallbutexistsinbigareathatgethighproduction.垂直井泄油面积drainageareainverticalwell水平井泄油面积drainageareainHW1.开展短半径侧钻水平井试验的目的1.PurposeofSuper-shortRadiusSidetrackHWTest侧钻水平井技术概述BriefintroductionofsidetrackHWtechnologyAdvantage
7、(优点):2对底水油藏有较高的临界采油速度,有利于底水油藏的高速开采Forreservoirwithbottomwater,ithasahighercriticaloilrecoveryrate,whichisgoodforproducingathighspeed.垂直井水锥形式waterconinginverticalwell水平井水锥形式waterconinginHW1.开展短半径侧钻水平井试验的目的1.PurposeofSuper-shortRadiusSidetrackHWTest侧钻水平
8、井技术概述BriefintroductionofsidetrackHWtechnologyAdvantage(优点):3尤其是对薄层油层,可大大提高油井产量。Especiallyforthinnerlayer,productionratecanbegreatlyincreased.1.开展短半径侧钻水平井试验的目的1.PurposeofSuper-shortRadiusSidetrackHWTest侧钻水平井技术概述Briefintroductionofsidetr