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首页> 外文会议>SPE International Conference and Exhibition on Formation Damage Control >First use of a Newly Developed High-Density Brine in an Oil-Based ScreenRunning Fluid in a Multilateral Extended Reach Well:Fluid Qualification,Formation Damage Testing,and Field Application,Offshore Norway
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First use of a Newly Developed High-Density Brine in an Oil-Based ScreenRunning Fluid in a Multilateral Extended Reach Well:Fluid Qualification,Formation Damage Testing,and Field Application,Offshore Norway

机译：首先在多边延伸到井中的油基绣线润滑液中首先使用新开发的高密度盐水：挪威海上流体资格，地层损伤测试和现场应用

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When used for running sand control screens,low-solids,oil-based completion fluids(LSOBCF)maintainreservoir wellbore stability and integrity while minimizing the potential risks of losses,screen plugging,completion damage,and productivity impairment.Until now,using LSOBCF as a screen running fluid(SRF)has been limited by fluid density.The design,qualification,and first deployment of an LSOBCFthat incorporates a newly developed,high-density brine as the internal phase to extend the density limitis discussed.The following parameters were examined as part of the preliminary qualification:rheology performance,long-term stability,fluid loss(filter-cake repair capability),reservoir fluid and drill-in fluid(RDIF)compatibility tests,emulsion breaking test,production screen test(PST)on 275 μm screen,crystallizationtemperature [true crystallization temperature(TCT)and pressurized crystallization temperature(PCT)],andcorrosion rate.The fluid was then tested for formation and completion damage performance,where the high-density,brine-based LSOBCF exhibited minimally damaging behavior in the core-flow tests.As a resultof the positive observations made during these wide-ranging laboratory tests,this new high density-basedbrine was deemed as a good candidate in an LSOBCF for high-density SRF applications.Viable LSOBCFwith densities up to 1.50 SG have been designed.This paper details the design and field application of a1.45 SG LSOBCF.Calcium bromide(CaBr2)brine is commonly used during the discontinuous phase for LSOBCFapplications that require fluid densities up to 1.38 SG.For higher density requirements,LSOBCF use acesium formate brine as a discontinuous phase.Using the new developed brine in the discontinuous phaseprovides viable LSOBCF up to 1.50 SG.The base brine has a good environmental rating,is pH neutral,andprovides improved safety during low-temperature/high-pressure conditions.As a standalone fluid,the newbrine can achieve densities up to 1.80 SG,with acceptable TCT and PCT values for North Sea applicationswithout using zinc or formate-based brines.After laboratory qualification,the final fluid formulation was deployed on a dual lateral oil producerwell with 9.5 in.horizontal reservoir section lengths of 2315 and 1696 m.After drilling the sections using an engineered low equivalent circulating density(ECD)oil-based RDIF(OB RDIF),each section wassequentially displaced to 1.45 SG LSOBCF.The lower completion,consisting of 5.5 in.screens equippedwith autonomous inflow control devices(AICD)and swellable packers,was successfully run to bottomwithout significant issues.The field application demonstrated evident operational efficiency gains.Thepositive pre-deployment formation response test(FRT)results have been verified by well productivity data.The process to qualify the brine for first-use application in LSOBCF is described,and laboratory testing(including FRT),mixing and logistical considerations,field execution,and well productivity are discussed.
机译：当用于运行砂控制屏幕，低固体，油基完成流体（LSOBCF）维护井稳定性和完整性，同时最大限度地减少损失的潜在风险，屏幕堵塞，完成损坏和生产力障碍。现在，使用LSOBCF作为一个运行流体（SRF）受到流体密度的限制。LSOBCFTHAT的设计，验证和首先部署包括新开发的高密度盐水作为内部阶段，以延长所讨论的密度限制。检查以下参数部分初步资格：流变性能，长期稳定性，液体损失（滤饼修复能力），储层液和钻孔流体（RDIF）相容试验，乳液破碎试验，生产筛选试验（PST）在275μm上筛选，结晶温度[真正的结晶温度（TCT）和加压结晶温度（PCT）]，腐蚀率。然后测试流体以形成和完成损伤在高密度，盐水的Lsobcf中表现出核心流动测试中的微小损伤行为的讲言。在这些广泛的实验室测试期间产生的阳性观测结果，这种新的高密度养殖的阳性观测被认为是一个好的候选人在LSOBCF中用于​​高密度SRF应用。设计高达1.50 SG的LSOBCFWWVITS已经设计。本文详细介绍了A1.45 SG LSOBCF.Calcium（CABR2）盐水的设计和现场应用在不连续阶段需要液体密度的LsobcFapplications高达1.38 sg。对于更高的密度要求，Lsobcf使用含量甲酸盐水作为不连续的阶段。在不连续相位的不连续的相片中的新发达的盐水可行的LSOBCF高达1.50 SG。基础盐水具有良好的环保评级， pH中性是pH中立的，还有改善的低温/高压条件下的安全性。纽贝尔可以达到高达1.80 SG的密度，可接受的TCT和P使用锌或基于锌的盐水的CT值。在实验室资格中，将最终的流体制剂展开，在双侧向油生产术中，9.5 in.HozoNTaltal储层段长度为2315和1696 m.钻孔部分使用工程低等效循环密度（ECD）基于油的RDIF（OB RDIF），每个部分都被序列移位至1.45 SG LSOBCF。完成的较低完成，由5.5 in.Creens配备自动流入控制装置（AICD）和可膨胀的包装机。成功跑到底线出现重大问题。现场应用程序展示了明显的运营效率提升。通过良好的生产率数据验证了精神上的预部署形成响应测试（FRT）结果。描述了符合LSOBCF中的盐水用于首次使用应用程序的过程，讨论了实验室测试（包括FRT），混合和后勤考虑，实地执行和良好的生产力。

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