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Horizontal Drill-in Fluid Reclamation for Re-use or Waste Minimization Field Trial

机译：用于重复使用或废物最少化的水平钻井液回收

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Due to the high cost and logistical concerns of drilling openrnholes in the geopressured arena, Shell began looking at waysrnfacilitate this option. Most horizontal drill-in fluids, regardlessrnof density, are discharged if they meet environmentalrnregulations. In the geopressure fluid densities, these fluidsrnhave a lot of value residing in the base brine which can berncomparable to, or even more valuable than the base forrnsynthetic fluids. This practice is not only costly, but in thernheavier fluids, they have environmental implications as well.rnWorking closely with Reclamation Solutions and MI DrillingrnFluids we came up with a process that would both reducernenvironmental impact give us back a fluid that could bernreused. The new process has been developed that incorporatesrnboth conventional and new technologies to reclaim these typesrnof fluids back to original specifications which have value tornboth Shell and MI. This process is known as CENTRIFLUX.rnDepending upon the solids content and/or characteristics ofrnthe waste fluid, a mechanical pretreatment phase involves bothrndecanting and high speed disc centrifuges that jointly removernsolids above 1-5 micron. The ultrafiltration phase removes thernremaining suspended solids above 0.1 micron by circulatingrnthe fluid through a SCEPTER stainless steel membranernmodule. This ultrafiltration removes both polymer and starchrnresidue which have been a problem in the past. The solidsrnremoved by the CENTRIFLUX process are transferred forrndisposal and the quality of the reclaimed base fluid meets orrnexceeds original specifications and can be used again.
机译：由于在地压领域中钻出裸眼井的高昂成本和后勤问题，壳牌开始寻找促进这种选择的方法。如果满足环境要求，大多数水平钻井液（无论密度如何）均会排出。在地压流体密度中，这些流体在基础盐水中具有很多价值，这些价值可以与基础合成流体相比，甚至比基础合成流体更有价值。这种做法不仅成本高昂，而且在较重的流体中也会对环境产生影响。与回收解决方案和MI DrillingrnFluids密切合作，我们想出了一种既能减少环境影响又能使我们回收可能被废弃的流体的工艺。已经开发出结合了常规技术和新技术的新工艺，以将这些类型的rnof流体回收到具有对Shell和MI有价值的原始规格。该过程称为CENTRIFLUX。根据废液的固体含量和/或特性，机械预处理阶段包括倾析和高速圆盘离心机，共同去除1-5微米以上的固体。通过使流体循环通过SCEPTER不锈钢膜组件，超滤阶段可除去0.1微米以上的残留悬浮固体。这种超滤去除了过去一直存在的问题的聚合物和淀粉残留物。通过CENTRIFLUX工艺去除的固体进行转移处理，回收的基础液的质量达到或超过原始规格，可以再次使用。

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