Bauerberg KLEIN-射孔手册英文版.pdfVIP

Module1

FUNDAMENTALSOF

WELLPERFORATING

CONTENT

•Whatiswellperforating

•Objectives

•Briefhistoryofperforating

•Typicaltypesofperforatingsystems

•Advantagesanddisadvantagesofeachsystem

WHATISWELLPERFORATING

Itisaprocessbywhichachargefired

fromaperforatinggun,goesthroughthe

casingcementandpenetratestheCEMENT

reservoirrock

ThepenetratingeffectofthechargeTUNNEL

shouldcreateaneffectiveandefficient

communicationpathforhydrocarbonsto

flowintothewellbore

CASING

Effectivebecausethepathiscreatedand

efficientbecauseitwillallowpassageof

fluidsfromthereservoirwiththeminimum

useofenergy(Pressure)

OBJECTIVESOFPERFORATING

Dependingonthetypeofreservoirrockotherobjectivescanbe:

•Theflowpathcanbeadeeppenetratingtunnelintothereservoir

•Oritcanbeastablecavityinsteadofthetunnel

•Providebettermechanicalconditionstomitigate/minimisesanding

•Flowpathcreatedmustallowfluidflowwiththeminimumpressuredroppossible

•Itmustbeafitforpurposeprocess

BRIEFHISTORYOFWELLPERFORATING

•Historydatesfrom1888whenC.E.Monroepublishedsomeobservationsabout

perforating

•Firstpatentgrantedin1926,technologywasbasedontheuseofaleadbullet

firedfromagun

•Militarytechnologywasintroducedinthe1930s

basedonchargesusetoperforatearmourin

tanks.Munitionsforthe“bazooka”isatypical

example

•Theuseofexplosivesandshapedlinerswere

introducedin1966

TYPESOFPERFORATINGSYSTEMS

Perforatingsystemscanbeclassifiedaccordingtovariousparameterssuchastype

ofrockordeploymentmethod.Accordingtodeploymentmethodwehavefour(4)

differents