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首页> 外文会议>SPE International Oilfield Scale Conference >Test Method Development and Scale Inhibitor Evaluations for High-Salinity Brines in the Williston Basin
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Test Method Development and Scale Inhibitor Evaluations for High-Salinity Brines in the Williston Basin

机译：威尔斯顿盆地高盐度盐水的试验方法开发和规模抑制剂评估

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In the Rocky Mountain region of the United States,high-salinity brines(total dissolved solids 250,000 mg/L)present during oil and gas production cause severe scale problems in the Williston Basin.The scales include not only calcium carbonate,calcium sulfate,barium sulfate,strontium sulfate,but also sodium chloride(halite).This paper presents the development of test methods and their corresponding testing results for scale inhibitor evaluations in the laboratory and their applications in the field for high-salinity brines. It is well known that there is no effective test method for halite scale inhibitor laboratory testing due to the difficulty of controlling the amount of halite precipitation and reproducibility in the test.The evaluation of scale inhibitor performance was conducted by using a tube-blocking test and a static bottle test with synthetic high-salinity brines from the Williston Basin.Two sets of brines were designed,based on the field brine,and were tested with two methods.One set of brine was for halite scale inhibitor evaluation by mixing near-saturated NaCl synthetic brine with a highly concentrated brine of CaCl2·2H2O NaCl.The second set of brine was designed to evaluate scale inhibitor performance on calcium carbonate,calcium sulfate,barium sulfate,and strontium sulfate by modified brines.Three types of scale inhibitors were used for the performance evaluations,including halite scale inhibitors,general scale inhibitors,and a multifunctional scale inhibitor.The lab test results showed the multifuntinal scale inhibitor exhibited good scale inhibition performance for both sets of scale testing.Successful scale inhibitor implementations in the field applications and case history are also presented in this paper.
机译：在美国的岩石山区，石油和天然气生产中的高盐度盐水（总溶解固体250,000 mg / L）导致威利斯泊池的严重规模问题。鳞片不仅包括碳酸钙，硫酸钙，钡硫酸盐，硫酸锶，也是氯化钠（盐）。本文提出了试验方法的发展及其对实验室中规模抑制剂评估的相应测试结果及其在高盐度盐水领域的应用。众所周知，由于难以控制试验中的宿猪沉淀和再现性的难度，没有有效的测试方法。通过使用管阻止试验进行规模抑制剂性能的评估基于现场盐水，设计了来自威利斯龙盆地的合成高盐度盐水的静态瓶试验。基于野生盐水，用两种方法进行了测试。通过混合近饱和，用两种方法进行测试。一组盐水用于宿舍抑制剂评估NaCl合成盐水，具有高浓盐水的CaCl2·2H 2 O NaCl。第二组盐水设计用于评估碳酸钙，硫酸钙，硫酸钡和通过改性盐水硫酸锶的规模抑制剂性能。使用三种抑制剂的三种抑制剂对于疗效评估，包括Halite Scal抑制剂，一般抑制剂和多功能抑制剂。实验室测试结果表明他的多层抑制剂对两组规模测试表现出良好的抑制性能。本文还提出了现场应用中的抑制作用和案例历史中的抑制作用。

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