易钻桥塞射孔联作技术在水平井分段压裂中的实践_任勇

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1、第35卷第2期石油钻采工艺Vol.35No.22013年3月OILDRILLING&PRODUCTIONTECHNOLOGYMarch2013文章编号：1000–7393（2013）02–0090–04易钻桥塞射孔联作技术在水平井分段压裂中的实践任　勇　叶登胜　李剑秋　蒋　海（川庆钻探工程有限公司井下作业公司，四川成都　610051）引用格式：任勇，叶登胜，李剑秋，等.易钻桥塞射孔联作技术在水平井分段压裂中的实践［J］.石油钻采工艺，2013，35（2）：90-93.摘要：四川盆地侏罗系沙溪庙组储层低孔低渗，使用常规改造手段很难获得工业油气流。为此，在G16H井首次开展了电缆带易

2、钻式桥塞分段射孔加砂压裂联作试验，桥塞通过8mm电缆下入，在水平段通过压裂车进行泵送，到达预定位置后地面给电信号进行坐封，同时桥塞与射孔枪丢手，上提射孔枪依次进行多簇射孔作业，每段分3~4簇射孔，坐封桥塞、射孔、加砂压裂作业最快可在12h内完成。G16H井共分10段施工，压后利用Ø50.8mm连续油管成功钻磨Ø114.3mm套管用桥塞9只，钻磨完单只桥塞平均用时仅60min左右。该井放喷测试获得了24.7t/d的高产工业油气流。易钻桥塞射孔联作加砂压裂技术的成功实施，初步探索出针对该低孔低渗区块的一套有效储层改造技术手段，为下一步侏罗系沙溪庙组储层高效开发积累了宝贵的现场经验。关

3、键词：水平井；分段压裂；易钻式桥塞；分簇射孔；连续油管中图分类号：TE357.1　　　文献标识码：BApplicationofdrillablebridgeplugandclusteringperforationinstagedfracturingforhorizontalwellRENYong,YEDengsheng,LIJianqiu,JIANGHai（Down-HoleOperatingCompany,ChuanqingDrillingandExplorationEngineeringCo.,Ltd.,ChengDu610051,China）Abstract:theindu

4、strialoil-gasflowcannotbeobtainedbyconventionalstimulationtreatmentinShaximiaoGroupJurassicSystemsincethecharacteristicoflowporosityandlowpermeability.TheclusteringperforationandsandfracturingofcabledrillablebridgeplugcombinationtestwasfirstimplementedinWellG16H.Theplugisdownloadingthroughthe

5、8mmcableandpumpingthroughthefrac-turingtruckinhorizontalstage.Electricalsignalsaresentforsettingfromgroundwhentheplugatthepredeterminedposition,andthentheplugandperforatinggunreleasingtoconductmultipleclustersofperforatingwiththeperforatinggunupinsuccession.Everystagehas3-4perforations,plugse

6、tting,perforationandsandfracturingcanbecompletedin12hatthesoonest.TherearetenstagesinWellG16H,Thecoiledtubingof50.8mmissuccessfullydrillingandgrindingØ114.3mmcasingwith9plugsafterfracturing,andtheaver-agetimeconsumingofsinglebridgeplugisonlyabout60min.24.7t/dindustrialoil-gasflowisobtainedaft

7、erthedischargetestinthiswell.Thesuccessfulimplementationofdrillablebridgeplugclusteringperforationandsandfracturinginthishorizontalwellpreliminar-ilyexploresasuitofeffectivereservoirreconstructiontechnologywhichisspecificforthislowporosityand