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时间:2020-04-05
《抗温抗盐无固相微泡沫钻井液研制与现场应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第44卷第2期石油钻探技术Vo1.44NO.22016年3月PETR()LEUMDRIILINGTECHNIQUESMar.,2016●钻井完井doi:10.1l911/syztjs.201602010抗温抗盐无固相微泡沫钻井液研制与现场应用王晓军(中国石油长城钻探工程有限公司工程技术研究院,辽宁盘锦124010)摘要:为降低钻井过程中的储层损害,解决微泡沫钻井液抗温抗盐性能不足、稳泡效果差的问题,合成了微泡沫发泡剂L卜2和稳泡剂HMC-1,优选了增黏剂和降滤失剂,配制了抗温抗盐无固相微泡沫钻井液。室内性能评价表明,该钻井液的岩屑回收率迭88.7,40/80目砂石漏层中30rain漏失量仅
2、1.8mL,岩心渗透率恢复率88.87。抗温抗盐无固相微泡沫钻井液在茨120井欠平衡井段的应用结果表明,其性能稳定易调整,平均机械钻速达4.41m/h,平均井径扩大率仅为3.97,欠平衡钻进效果明显,全烃值最高100,并多次点火成功。研究表明,抗温抗盐无固相微泡沫钻井液体系抗温、抗盐能力强,储层保护效果好,具有推广应用价值。关键词:欠平衡钻井;发泡剂;稳泡剂;泡沫钻井液;现场应用;茨120井中图分类号:TE254.3文献标志码:A文章编号:1001—0890(2016)02—0058—07TheDevelopmentandApplicationofSolid_FreeMicro-FoamD
3、rillingFluidwithTemperatureResistanceandSaltToleranceWANGXiaojun(EngineeringResearchInstitute.CNPCGreatWallDrillingEngineeringCompanyLimited,Pan—jin,Liaoning,124010,(ina)Abstract:InordertOreducereservoirdamageduringdrillingandtoimprovetemperatureresistance,salttoleranceandfoamstabilizationofmicro—
4、foamdrillingfluid。anewtypeofsolifreemicro—foamsys—ternwithtemperatureresistanceandsalttolerancewaspreparedbysynthesizingthefoamingagentsLF2andfoamstabilizerHMC-1andoptimizingviscosityincreasingagentsandfluidlOSSadditives.Laboratoryperformanceevaluationsshowedthatthecuttingrecoveryratewas88.7%,ther
5、ecoveryrateofcoreper—meabilitywas88.87andthecirculation1ostwasonly1.8mLin40/80meshsandthiefzoneswithin30min.Later,thenewsystemwasusedinunderbalancedintervalsdrillingofWellCil20.Resultsindica-tedthatthisnewsystemwasstableandadjustable。anddrillingimprovementswereremarkablewithaver—ageROP4.41m/handav
6、erageholeenlargementrate3.97,respectively.Inaddition,themaximumto—talhydrocarbonoftheintervalswasupto1009/6withSuccessignitions.Insummary,thesolid-freemicro—foamdrillingfluidsystemiSstrongintermsoftemperatureandsaltresistance,anditdemonstratesgoodperformanceinreservoirprotectionisworthyoffurtherla
7、rgescaleapplication.Keywords:underbalanceddrilling;foamingagent;foamstabilizer;foamdrillingfluid;fieldapplica~tion:WellCil20随着我国石油需求的不断增长及已探明储量泡剂等表面活性剂后经过物理、化学作用,形成有的深度开采,油气勘探开发逐步向深层、复杂地层多层膜包裹并以均匀、非聚集、非连续态存在的微发展,
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