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首页> 外文会议>IADC/SPE Drilling Conference and Exhibition >Case History: An Enhanced Solids Control Strategy Selective Flocculation Process Allows for Reduced Dilution Rates and Costs in Water-based Drilling Fluids in Auca Field, Ecuador
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Case History: An Enhanced Solids Control Strategy Selective Flocculation Process Allows for Reduced Dilution Rates and Costs in Water-based Drilling Fluids in Auca Field, Ecuador

机译：案例历史：增强的固体控制策略选择性絮凝过程允许降低澳大省澳大省澳大省水域钻井液中的稀释率和成本。

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The main objective of using selective flocculation is to increase the efficiency of the fluid system and the solids-control equipment. Removing drill cuttings from the fluid system is important for increasing the drilling efficiency and success of the overall operation. Selective flocculation is proven to efficiently remove drilled solids, especially smaller-or colloidal-sized particles. The performance of drilling fluid components increases because larger quantities are allowed to interact with the drilled formation, which is preferred. This process provides various benefits, including decreased water consumption, which reduces requirements for additional new fluids to be mixed for dilution and consumption of sustaining properties for rheology, filtration control, and inhibition. The design process focuses on the operation of centrifuges but begins by performing a detailed evaluation using specialized equipment of all solids-control equipment available on the drilling rig, from the shakers to centrifuges. Damaged parts and accessories are repaired and/or replaced, and a simple barite retrieval system and an array of valves for the injection of a concentrated flocculant solution composed of a specialized clay polymer are installed in the centrifuges. The flow necessary for operation of the centrifuges is separated from the drilling circuit as the design current. The specialized polymer solution is injected, and the process ends with the arrangement of injection rates to obtain an output current with a clay content value measured using a methylene blue test (MBT) at zero or near zero. This current's properties must remain close to those of a new fluid without weighting material. When the treatment was evaluated, an increase in solids-control equipment efficiency of approximately 10% was obtained, and a 12% reduction in total new drilling fluid volume was observed, which could be optimized up to approximately 30%. Savings in water consumption were directly proportional, and cost savings were influenced by the reduced consumption of fluid products.
机译：使用选择性絮凝的主要目的是提高流体系统和固体控制设备的效率。从流体系统中移除钻屑对于提高钻井效率和整体操作的成功非常重要。精选絮凝被证明以有效地去除钻孔固体，尤其是较小或胶体尺寸的颗粒。钻井液组分的性能增加，因为允许较大的量与钻孔的形成相互作用，这是优选的。该方法提供了各种益处，包括降低的水消耗，这降低了额外的新流体的要求，以稀释和消耗可持续性能，用于流变，过滤控制和抑制。设计过程侧重于离心机的操作，但是通过使用钻机上可用的所有固体控制设备的专用设备进行详细评估，从摇机到离心机进行详细的评估。修复和/或更换损坏的零件和附件，并且在离心机中安装了简单的晶片检索系统和用于注射由专用粘土聚合物组成的浓缩絮凝剂溶液的阀门。将离心机操作所需的流量与钻孔电路分离为设计电流。注射了专用的聚合物溶液，并将过程以喷射速率的布置结束，以获得使用亚甲基蓝色测试（MBT）在零或接近零中测量的粘土含量值的输出电流。该电流的性质必须保持靠近没有加权材料的新液体的特性。当评估处理时，获得固体控制设备效率的增加约10％，观察到总新的钻井液总量的12％降低，这可以优化至约30％。耗水量的节省成本比例，节省成本受到液体产品消耗量降低的影响。

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