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ID:37327154
大小:350.42 KB
页数:5页
时间:2019-05-21
《乐东221气田A14H井表层定向及扩眼钻井技术》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42卷第6期石油钻探技术Vo1.42NO.62014年11月PETROLEUMDRILLINGTECHNIQUESNov.,2014..现场交流doi:10.11911/syztjs.201406023乐东22-1气田A14H井表层定向及扩眼钻井技术吴旭东,刘和兴,方满宗,马传华,郑金龙,牛雪(1.中海油能源发展股份有限公司工程技术湛江分公司,广东湛江524057;2.中海石油(中国)有限公司湛江分公司,广东湛江524057)摘要:为解决南海莺歌海盆地乐东22—1气田表层松软地层定向造斜扩眼钻进困难、邻井相碰及易产生新井眼等钻井工程技术难题,提出了一种先钻小尺寸领眼,再用新型三级固定翼
2、扩眼器定向扩眼,然后下入套管的海洋表层钻井技术。结合随钻测量仪和电子陀螺测斜仪钻进乐东22—1气田A14H井表层时,先用+250.8nm1钻具定向造斜、钻小领眼,再用254.1InIn×+349.3n1m×似44.5InIn新型扩眼器将领眼定向扩眼至+444.5mm,下入+339.7mm表层套管并固井。现场应用表明,该技术解决了丛式井表层防碰难题,保障了疏松地层的造斜钻进效果,防止了钻井中扩眼钻具对领眼井造斜效果的不利影响,对后续类似井的钻井具有一定的借鉴价值。关键词:浅层水平井防碰扩眼井眼扩大器A14H井;乐东22—1气田中图分类号:TE243.9文献标识码:A文章编号:1001—08
3、90(2014)06—0115一O5DirectionalDrilling&ReamingTechnologyintheShallowFormationofWellA14HintheLD22—1GasFieldWuXudong,LiuHexing2,FangManzong2,MaChuanhua,ZhengJinlong,NiuXue。(1.ZiangBranch0/CNCxCEnergyTechnology&ServicesLtd.,Znjiang,Guangdong,524057,Cina;2.ZhanjiangBranchofcN00CLtd.,Zhanjiang,Guangdon
4、g,524057,Cina)Abstract:InordertosolveproblemsthatoccurredwhendrillingshallowsoftformationintheLD22—1GasField,intheYinggehaiBasinoftheSouthChinaSea,includingproblemsindirectionaldrilling,rea—ming,buildingangle,boreholecollisionoftheadjacentwells,anewtechnologywasdeveloped.Itinvolveddrillingasmall—
5、sizedpilotholeatfirst,andthenusingspecialthree—stagereamertodirectionallyreamingit,followedbythenrunningsurfacecasing.CombinedMWDwithgyroinclinometer,asmalIpilotholeof250.8nlInwasdrilledwithdirectionaldrillingtoolsinWellA14HinLD22—1GasField,andthenitwasreamedtOthe姐44.5mmbythespecialreamerwiththre
6、e-stagereamingsizesof,~254.1mm×49.3mm×巾444.5mm,finallythe,~339.7mmcasingwasruninholeandcemented.Drillingpracticesshowedthatthetechnologysuccessfullypreventedtheboreholefromcollidinginclusterwellsinshallowformationssuccessfully.Italsoensuredtheeffectofdirectionaldrillingandbuildingup,andeliminated
7、theunfavorableeffectofreameronbuildingupinpilothole.Thestudyconcludedthatitwouldbeanusefulreferencefordrillinginsimilarshallowsoftformations.Keywords:shallowlayer;horizontalwell;anti—collision;reaming;WellA14H;LD22—1Ga
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