钻井新技术重点

《钻井新技术重点》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、1.Horizontaldrilling：Horizontaldrillingistheprocessofdrillingawellfromthesurfacetoasubsurfacelocationjustabovethetargetoilorgasreservoircalledthe“kickoffpoint”(KOP),thendeviatingthewellborefromtheverticalplanearoundacurvetointersectthereservoiratthe“entrypoint”withanear-horizont

2、alinclination,andremainingwithinthereservoiruntilthedesiredbottomholelocationisreached.2.ExtendedReachDrilling：ExtendedReachDrillingisdrillinghorizontallyfromaboreholethatisbeganasaverticalhole.Bytheuseofangle-buildingassemblies,thedrillgraduallyassumesahorizontalattitudeanddril

3、lslaterallytheproductiveformation.It’slateraldepartureismorethantwiceoftureverticaldepth(TVD).3.MultilateralwellDrilling：Amulti-lateralwellisoneinwhichthereismorethanonehorizontalornearhorizontallateralwelldrilledfromasinglemainboreandconnectedbacktothatmainbore.4.Managedpressur

4、edrilling(MPD)：“anadaptivedrillingprocesstopreciselycontroltheannularpressureprofilethroughoutthewell”.Themainideaistocreateapressureprofileinthewelltostaywithinclosetolerancesandclosetotheboundaryoftheoperationenvelopedefinedbytheporepressure,holestabilityenvelopeandfracturepre

5、ssure.5.SlidingSteeringsystem:Slidingsteeringsystemadjustorchangethedrillingbit’sorientationbyusingdown-holeBenthousing(down-holemotor)whilethedrillingstringsareinnon-rotationstatus.6.RotarySteeringsystem:Rotarysteeringsystemadjustorchangethedrillingbit’sorientationbyusingdown-h

6、olesteeringtoolwhilethedrillingstringsareinrotationstatus.Duetothelimitationoftoolplacement,itlacksnear-bitgeologicparametermeasurement,thisformssignificantdifferencebetweenRotarysteeringandGeologysteeringsystem.7.Loggingwhiledrilling(LWD):Asystemwhichprovidesreal-timeloggingdat

7、afrommeasurementsmadenearthedrillbitduringthedrillingprocess8.Slimholedrilling:Ameasofreducingthecostofawellbydrillingasmallerdiameterholethaniscustomaryforthedepthandthetypesofformationstobedrilledthrough.Aslimholepermitsthescalingdownofallphasesofthedrillingandcompletionoperat

8、ions.9.GeologicalSteering:Usinggeologicalprinci