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首页> 外文会议>SPE Improved Oil Recovery Conference >Optimizing Tight Oil Assets on Water Flood Utilizing Polymer GelTechnology;A Cost-Effective Approach with High Rate of Success
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Optimizing Tight Oil Assets on Water Flood Utilizing Polymer GelTechnology;A Cost-Effective Approach with High Rate of Success

机译：利用聚合物Geltechology优化水淹的紧密石油资产;一种成功率高的成本效益

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Thanks to the advancements in and convergent of the two technologies of horizontal well drilling andhydraulic fracturing,the oil production from tight formations has become possible and economic.Whilehydraulically fractured horizontals wells(HFHW)have increased the productivity of these reservoirs,thesewells typically see a sharp decline in hydrocarbon rate due to tight nature of these reservoirs.Operators have improved oil recovery methods in these formations with the successful application of thesecondary recovery method of waterflooding.This combination of HFHW and waterflooding has primarilybeen implemented in Canadian tight oil formations such as the Canadian Bakken Shale,lower Shaunavon,Viking,Belly River and Cardium.With the application of waterflooding on these HFHW,the one issue thatoperators are facing is the management of quick water breakthrough due to well to well communicationthrough the network of induced or natural fractures resulting in poor sweep efficiency of waterfloods.Conformance improvement using polymer gel technology,a polymer and a polymer specific cross-linker,has been a common practice in conventional assets for 30 years.The polymer solution is mixed with thecrosslinker on the surface and the mixture becomes more viscous(due to the reaction between polymer andcrosslinker)as it is pumped downhole and into the reservoir.The application of polymer gel technology inunconventional tight oil water floods requires a new approach and is most successful when approached in asystematic way starting with proper diagnosis and candidate selection followed by engineering design andfield execution.After candidate selection and diagnosis of communication between wells,a treatment designis put together based on the level of communication as measured by the transit time between the two wells.The conformance treatment is implemented by bull heading the mixture of polymer and crosslinker andsequentially increasing the gel strength by increasing polymer concentration at fixed polymer to crosslinkerratio.The idea is to build pressure continuously throughout the treatment,an indication of polymer gelfilling up the path of communication.A new application for gel conformance technology,in tight oil waterfloods,as a cost-effective solution,toaddress the well to well communication and improve sweep efficiency is discussed in this article.Relativelysmaller size and lower strength of gel,compared to the typical applications,makes the application of polymer gel in HFHWs unique and very effective.This paper will review multiple campaigns in CanadianBakken from 2016 to 2018 and discuss the rate of success,incremental oil produced and longevity of thesetreatment.Opportunities to further optimize these treatments and the pitfalls have been recognized anddiscussed.
机译：由于卧式钻井和液压压裂两种技术的进步，从地层的石油生产已经成为可能和经济.Whelylylylyly裂缝的水平井（HFHW）增加了这些储层的生产率，这威尔通常会看到尖锐的由于这些储层的性质紧张，烃率下降。在这些地层的成功应用中，在这些地层中具有改善的石油回收方法，其恢复方法具有改善的水上恢复方法。HFHW和水的组合主要在加拿大紧迫的油层（如加拿大）中实施Bakken Shale，Dower Shaunavon，Viking，Belly River河和Cardium.Wiking在这些HFHW上的应用，透明器面临的一个问题是管理快速水突破的管理，因为良好的沟通诱导或自然骨折的网络Waterfl的扫掠效率不佳使用聚合物凝胶技术，聚合物和聚合物特异性交联剂的oOds.Conforce改进是常规资产的常见做法30年。聚合物溶液与胸部表面混合，混合物变得更加粘稠（由于聚合物和克隆链接之间的反应）如将井下泵送到储液器中。聚合物凝胶技术的应用急剧紧密的油水泛滥需要一种新的方法，并且在以适当的诊断和候选选择开始以适当的诊断和候选选择之后以asysyatic方式接近而是最成功的设计和菲尔德执行。候选井的候选选择和诊断井之间的通信，一种基于通过两个孔之间的运输时间测量的通信水平组合在一起。通过公牛来实现聚合物和交联剂的混合物来实现的一致性处理通过增加聚合物浓缩来顺列增加凝胶强度固定聚合物的曲线到交叉链接。思路是在整个治疗过程中连续构建压力，这是聚合物的指示覆盖了通信路径。将凝胶一致性技术的新应用，紧缩油水闪电图，作为一种经济高效的解决方案，作为一种经济效益的解决方案在本文中讨论了井通信和提高扫描效率。与典型应用相比，凝胶的尺寸和较低的强度，使聚合物凝胶在HFHW中的应用独特而且非常有效。本文将审查加拿大人的多个竞选活动从2016年到2018年，讨论了成功，增量石油的成功率，生成的绩效和长寿。储存，进一步优化这些治疗，陷阱已得到承认和分发。

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