威德福分段压裂技术介绍- Full

ZoneSelect™————威德福一次多层压裂系统©2008Weatherford.Allrightsreserved.ZoneSelect™——威德福一次多层压裂系统•射孔枪桥塞联作多层压裂系统•投球滑套一次多层压裂系统•投球固井滑套一次多层压裂系统•全通径开关滑套一次多层压裂系统•投球可重复开关滑套一次多层压裂系统•电感可重复开关滑套一次多层压裂系统•钻塞/不钻塞固井一次多层压裂系统•从式滑套一次多层压裂系统1©2008Weatherford.Allrightsreserved.优化目标——水平井方向与裂缝垂直©2008Weatherford.Allrightsreserved.裂缝的几何形态决定储量压裂产生裂缝的形态？…Or?地质构造？裂缝大小？裂缝形态？裂缝多少？排水网络？©2008Weatherford.Allrightsreserved.微地震裂缝监测三种完井方法压裂效果对比同井和临井两种监测方式结合TreatmentWell8-12TreatmentandObservationWell1-12TreatmentWell16-1PlanView套管切割裸眼井分层压裂套管射孔©2008Weatherford.Allrightsreserved.5射孔枪桥塞联作多层压裂系统©2008Weatherford.Allrightsreserved.6射孔枪桥塞联作多层压裂系统©2008Weatherford.Allrightsreserved.7威德福FracGuard®300复合式桥塞设计特点温度等级300°F(149°C)•压力等级12,000PSI(689bar)•上下双向持压•底部斜面防止磨铣打转，增加磨铣速度•复合材质，磨铣容易，磨屑细小易携带，降低作业时间，尤其适合单井多层作业•复合材质，使用常规磨鞋即可。另外磨屑细小，也降低了地面设备的堵塞危险。©2008Weatherford.Allrightsreserved.8FracGuard®复合式桥塞单井安装实例©2008Weatherford.Allrightsreserved.9©2008Weatherford.Allrightsreserved.投球滑套一次多层压裂系统10©2008Weatherford.Allrightsreserved.11ZoneSelect™4种不同的层间隔离方式ARES™PackerBULLDOG™InflateCementSwellPackers•高压扩张式封隔器•超长隔离段•液压坐封传统封隔器•遇烃（水）膨胀封隔器©2008Weatherford.Allrightsreserved.ComboFrac复合式封隔器Size4-1/2x6.255-1/2x8.50Openholesize6.000in.-6.25in.155.57mm-158.75mm8.50in.216mm.Tubingsizeandweight4-1/211.6lb/ft5-1/223lb/ftDifferentialPressurerating10,000psi690bar10,000psi690barSettingactuationpressure4000psi276bar4000psi276barMaximumtemperaturerating300ºF148.8ºC320ºF160ºCTensilerating220,000lbs99790.3Kg515,000lbs233,600KgBodymaterial4140(P-110)4140(P-110)MaximumOD5.75in.146.05mm.8.25in.209mmMinimumID3.92in.99.568mm.4.670in.118.6mmOALwithLTCthreads120in.3048mm.120in.3048mm.Elementlength72in.1828.8mm72in.1828.8mm©2008Weatherford.Allrightsreserved.13ZoneSelect™压裂滑套及压裂方式MonoboreSingleShot(SS)ToeSleeveMulti-Shift•投球打开锁死,不可关闭•投球打开，工具关闭•专利特有的缓冲装置•工具开，工具关•固井环境•打压开启，不可关闭(utilizedonall3systems)©2008Weatherford.Allrightsreserved.14ZoneSelect™复合材料球Note:球到位以及持压后的环形卡痕图中所示为在加拿大压裂作业中使用过的球.在这口作业实例中，具体参数如下：作业实例•送球泵速:(12.57bbl/min)2.00m3/min•压裂泵速:(25.2bbl/min)4.00m3/min•作业压力:(6380psito7541psi)44MPaupto52MPa•压裂作业结束后，球随产液回流至井口.©2008Weatherford.Allrightsreserved.152.换比重轻点的球关于压裂滑套所用球的材质，推荐我公司composite复合材料球（比重1.8），不建议采用常规的酚醛树脂球（比重1.25）。FracBallComparision010,00020,00030,00040,00050,00060,00070,000FlexuralStrength(psi)FlexuralModulus(ksi)TensileStrength(psi)CompressiveStrength(psi)SpecificationValuesWeatherfordCompetitionCompositePhenolic©2008Weatherford.Allrightsreserved.16投球滑套一次多层压裂系统一次多层增产措施•节约时间和成本，•采用单开压裂滑套（不能关闭）。•球座设计能保证密封，又不卡球。球能够返回地面。•减少作业时间。•各层独立作业。•压裂滑套外覆复合材质保护铠皮，防止杂质。•球座易磨铣。©2008Weatherford.Allrightsreserved.17Run-instring,setthelinerhangerorpackerandtheopen-holepackersZoneSelecttoesleeveOpen-holepackerZoneSelect™SSslidingsleeveLinerHanger/PackerStartpumpingthefrac,hydraulicallyopentheZoneSelecttoesleeveContinuepumpingthefrac,dropthesmallestballtoseatinthelowestZoneSelectSSslidingsleeveandhydraulicallyopenthesleeve.Dropthenext-largestballtoseatinthenextZoneSelectSSslidingsleeveisolatingthewellborebelowandhydraulicallyopeningthesleeve.投球滑套一次多层压裂系统作业步骤管柱入井、坐封所有封隔器开泵、打开趾端滑套，压裂最底层投最小球、开启上面一层压裂滑套并对这层实施压裂投稍大的球、开启再上面一层压裂滑套并封闭下面层位，对这层实施压裂©2008Weatherford.Allrightsreserved.18投球滑套一次多层压裂系统作业步骤投最后一个球，完成所有层的压裂开井口投产，返流球及多余砂下钻磨铣球座和剩于的球开井投产Dropthelastballandcompletethefracjob.ProducethewelltocleanupproppantandballsMill-outanyballsthatremainandallballseatsProducethewell.©2008Weatherford.Allrightsreserved.投球固井滑套一次多层压裂系统19©2008Weatherford.Allrightsreserved.20投球固井滑套一次多层压裂系统作业步骤下入完井管柱、坐封悬挂器、注水泥碰压、坐封封隔器继续加压打开压差滑套压裂投球压裂其余层段©2008Weatherford.Allrightsreserved.21威德福专利保护的复合材质的外套所有的压裂滑套外都包裹了一层薄薄的复合式外套铠皮.这层外保护层不密封，但能防止地层或者固井杂质进入压裂滑套的流通口。一旦压裂滑套打开，压力通过流通口后进入复合式外套铠皮，使其分层降解纤维化。BeforeAfter复合固井桥塞©2008Weatherford.Allrightsreserved.22全通径开关滑套一次多层压裂系统©2008Weatherford.Allrightsreserved.23全通径开关滑套一次多层压裂系统层间封隔通过固井实现•大大减少作业时间•所有层都能实现单独压裂•外部复合材质铠皮包裹，无固井碎屑•压裂过程中HWB液压开关滑套工具提到管柱中特定腔体内，防砂卡。悬挂器一旦坐住,开始通过管柱和浮鞋注水泥。胶塞下行并不能打开压裂滑套（上开型）。两组HWB液压开关滑套工具串行，用于压裂前后选择性打开和关闭压裂滑套。©2008Weatherford.Allrightsreserved.24全通径开关滑套一次多层压裂系统作业步骤下入完井管柱、坐封悬挂器、注水泥碰压、坐封封隔器停泵后HWB锁块缩回、把开关工具提到位于顶部封隔器上部直井段内的工具腔内。固井后、用HWB工具打开最底部压裂滑套©2008Weatherford.Allrightsreserved.25全通径开关滑套一次多层压裂系统作业步骤底部地层压裂结束后，用HWB开关工具关闭该层压裂滑套打开上面一层的压裂滑套、压裂直至所有地层压裂结束并关闭所有滑套用HWB开关工具开启相应层位的滑套，投产开关工具就位后，压裂最下部地层©2008Weatherford.Allrightsreserved.26ZoneSelect™Monobore压裂系统作业步骤HWB液压开关工具©2008Weatherford.Allrightsreserved.27投球可重复开关滑套一次多层压裂系统©2008Weatherford.Allrightsreserved.28投球可重复开关滑套一次多层压裂系统一次多层增产措施•节约时间和成本，•专利特有的缓冲装置降低高泵速送球到位时对球座的冲击•球座设计能保证密封，又不卡球。球能够返回地面•减少作业时间•压裂滑套外覆复合材质保护铠皮，防止杂质•球座易磨铣©2008Weatherford.Allrightsreserved.29投球可重复开关滑套一次多层压裂系统作业步骤Run-instring,setthePacker,andinflatetheopenholepackersZoneSelectToeSleeveOpenholePackerZoneSelectSlidingSleevePackerStartpumpingthefrac,hydraulicallyopentheZoneSelectToeSleeveContinuepumpingthefrac,dropthesmallestballtoseatonthelowestZoneSelectSlidingSleeveandhydraulicallyopenit.Dropthenextsizelargerball,toseatinthenextZoneSelectSlidingSleeveandhydraulicallyopenit.管柱入井、坐封所有封隔器开泵、打开趾端滑套，压裂最底层投最小球、开启上面一层压裂滑套并对这层实施压裂投稍大的球、开启再上面一层压裂滑套并封闭下面层位，对这层实施压裂©2008Weatherford.Allrightsreserved.30投球可重复开关滑