Abstract—

The evaluation of the corrosion wear rate was carried out using the Norsok Standart M-506 method for oilfield production tubing in Belarus. The method is based on a model that takes into account the speed of the gas-liquid flow, its pH, the volumetric flow rate of water, oil, gas, pressure, temperature, immersion depth, pH, density and viscosity of these media, and diameter and wall thickness of tubing. A feature of the model is the consideration of the friction of the gas-liquid flow on the walls of the tubing and the resulting shear stresses near them, which allows taking into account the corrosion-mechanical component of the metal degradation process of the tubing. The characteristics of well media and operating conditions of equipment in fields are given. Empirical coefficients of the considered model for typical conditions of Belarusian oil fields have been determined and a predictive calculation of the corrosion rate of 32Mn1A tube steel strength group N80 (Q) of the API Specification 5CT has been carried out. Data on actual values of corrosion wear of tubing from more than 100 production wells have been collected. The results indicate a high convergence of calculated and actual data. The adapted Norsok Standart M-506 method of predicting corrosion wear is recommended for use at oil fields in Belarus. It is shown how the proposed approach can be extended to other oil-bearing regions.

中文翻译：

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井介质高矿化度油田油管腐蚀磨损率预测

摘要-

采用Norsok Standard M-506方法对白俄罗斯油田生产油管进行腐蚀磨损率评价。该方法基于一个模型，该模型考虑了气液流动的速度、其pH值、水、油、气体的体积流量、压力、温度、浸入深度、pH值、这些介质的密度和粘度，以及管材的直径和壁厚。该模型的一个特点是考虑了管壁上气液流的摩擦力以及在管壁附近产生的剪切应力，从而可以考虑管材金属降解过程中的腐蚀机械成分。给出了井介质的特点和现场设备的运行条件。确定了白俄罗斯油田典型条件下所考虑模型的经验系数，并对 API 规范 5CT 强度组 N80 (Q) 32Mn1A 管钢的腐蚀速率进行了预测计算。已收集了100多口生产井的油管腐蚀磨损实际值数据。结果表明计算数据和实际数据高度收敛。建议在白俄罗斯的油田使用经过改造的 Norsok Standard M-506 预测腐蚀磨损方法。它展示了如何将所提出的方法扩展到其他含油区域。